CN114320281A - Near-bit while-drilling azimuth resistivity and azimuth gamma measuring device - Google Patents
- ️Tue Apr 12 2022
CN114320281A - Near-bit while-drilling azimuth resistivity and azimuth gamma measuring device - Google Patents
Near-bit while-drilling azimuth resistivity and azimuth gamma measuring device Download PDFInfo
-
Publication number
- CN114320281A CN114320281A CN202111652077.3A CN202111652077A CN114320281A CN 114320281 A CN114320281 A CN 114320281A CN 202111652077 A CN202111652077 A CN 202111652077A CN 114320281 A CN114320281 A CN 114320281A Authority
- CN
- China Prior art keywords
- gamma
- resistivity
- module
- circuit
- voltage Prior art date
- 2021-12-30 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to the field of horizontal well drilling azimuth detection, in particular to a near-bit while-drilling azimuth resistivity and azimuth gamma measuring device. The sensor slot comprises a power supply transmitting antenna used as the resistivity of electromagnetic waves and a transmitting antenna used for wireless communication, two low-power point source focusing antenna receiving antennas, and a gamma counting tube is arranged between the transmitting and receiving antennas; the data acquisition groove comprises a resistivity transmitting and receiving circuit and a gamma counting tube high-voltage circuit; the data processing control circuit slot comprises a main MCU, a well deviation, a tool surface measurement, a three-dimensional vibration measurement, a rotating speed measurement and a wireless short transmission circuit; the battery pack slot contains two groups of high temperature battery packs. The invention solves the problems of large power consumption, short underground continuous working time, long measuring point lag drill bit and low thin-layer sandstone drilling rate of the conventional LWD. Not only prolongs the underground continuous working time, but also improves the sandstone drilling rate, reduces unnecessary drilling process, improves the recovery ratio, reduces the cost and realizes the yield increase of the oil field.
Description
The technical field is as follows:
the invention relates to the field of horizontal well drilling azimuth detection, in particular to a near-bit while-drilling azimuth resistivity and azimuth gamma measurement method
Background art:
with the large-area popularization and application of the domestic horizontal well technology, the domestic self-developed LWD is not mature enough in technical mode, and the conventional LWD introduced abroad cannot meet the economic and effective development of some complex oil and gas reservoirs, such as thin oil reservoirs and large-dip-angle oil reservoirs, because the formation parameter measuring point is far away from the drill bit. In order to improve the sandstone drilling rate of special oil reservoirs, hundreds of wells are required to rent foreign advanced instruments to complete every year in China, and the rent is expensive and the cost is high. And the main foreign oil service companies carry out technical blockade on the advanced geosteering technology, and the introduction and maintenance routes of instruments are long and complicated. Because the conventional LWD measuring point lags behind the drill bit, the thin sandstone drilling rate is low. Meanwhile, the conventional LWD detector has high power and short underground continuous service time, so that the drilling speed is restricted and the drilling cost is increased. Therefore, in order to improve the recovery efficiency, increase the downhole continuous working time, reduce the cost and improve the technical innovation autonomy, the development of a near-bit measuring instrument is necessary to meet the requirement of oil field development and fill the domestic blank. The problem of low drilling encounter rate of the horizontal well drilling oil layer in the thin oil layer is a technical problem which restricts the commercial development key and bottleneck. The near-bit azimuth resistivity and azimuth gamma combined logging-while-drilling method is used, and ground manual intervention is added to guide the bit to drill in a thin mutual oil layer, so that the drilling rate of the oil layer is improved, the invalid footage is reduced, the dynamic rate and the reserve recovery rate of a reservoir are improved, and the oil production and the economic benefit are improved.
The invention content is as follows:
in view of the above, the invention provides a near-bit while-drilling azimuth resistivity and azimuth gamma measuring device, which is used for solving the problems that the detection point of the existing azimuth gamma and azimuth resistivity device lags behind a bit, and the position of the down-hole bit cannot be timely adjusted in the drilling process, so that the drilling encounter rate is low; and the problems of large running power and short underground continuous working time of the traditional device.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the invention provides a near-bit while-drilling azimuth resistivity and azimuth gamma measuring device. Four functional groove surfaces are arranged around the drill collar pup joint and are respectively used for installing a sensor module, a data acquisition module, a data processing module and a power module. A cable channel is arranged between the sensor module mounting groove and the acquisition module mounting groove. The front end of the drill collar pup joint is provided with a working surface for detecting the orientation of the drill collar. The near-bit while-drilling azimuth resistivity and azimuth gamma measuring device is connected with a bit at the front end and is connected with a power drilling tool at the rear end.
The measurement module of the invention comprises an azimuthal resistivity and azimuthal gamma device. The azimuth resistivity is used for measuring geological resistivity, and the azimuth gamma tube is used for measuring the lithology of the stratum. The azimuth resistivity measuring device consists of a point source focusing transmitting antenna 1, a point source focusing near receiving antenna 2 and a point source focusing far receiving antenna 2. Four mounting grooves are formed in the groove surface of the sensor module and are respectively used for mounting a power source transmitting antenna 1, a transmitting antenna 1 for wireless communication, a G-M gamma counting tube 3, a point source focusing near receiving antenna 2 and a point source focusing far receiving antenna 2. The point source focusing receiving antenna 2 and the point source focusing transmitting antenna 1 are respectively positioned on two sides of the G-M gamma tube (3), the point source focusing transmitting antenna (1) is positioned at the uppermost end of the drill collar pup joint, the point source focusing far receiving antenna (3) is positioned at the lowermost end of the drill collar pup joint, the distance between the far receiving antenna (3) and the transmitting antenna is 60cm, and the distance between the point source focusing near receiving antenna (2) and the point source focusing far transmitting antenna (1) is 15 cm.
The cable channel controls the selection of the transmitting frequency and the power of the transmitting antenna through a microprocessor of the control circuit. The electromagnetic wave transmitting circuit and the point source focusing transmitting antenna (1) form a resistivity transmitting module, and the electromagnetic wave receiving circuit and the point source focusing receiving antenna (2) form a resistivity receiving module; the electromagnetic wave transmitting circuit uses a crystal oscillator to output 2MHz sine wave signals. The electromagnetic wave receiving circuit receives the signal of the transmitting circuit by using a dual-channel high-frequency amplifier. The standby intermittent operation of the circuit with the total power of 0.6W can reach 200 hours.
The natural gamma module (2) mainly comprises three groups of Geiger counting tubes to form an azimuth gamma ray detector, wherein the G-M mounting grooves are arranged at 30 degrees and are arranged in an instrument groove between a point source focusing transmitting antenna (1) and a point source focusing near receiving antenna (3); it is composed of a G-M counting tube, a high voltage generator, a preamplifier, a pulse amplifier and a scaler. The natural gamma high-voltage circuit is excited by adopting a high-voltage stabilized power supply module, the square wave pulse output voltage of the G-M gamma high-voltage circuit is 900V in order to adapt to the change of the underground gamma high-voltage plateau, the collection and storage are completed through the G-M gamma collection circuit, and the counting rates of the multi-channel gamma ray detector are combined together so as to optimize the statistical precision.
The data processing module comprises a main MCU, a well deviation, a tool surface measurement, a three-dimensional vibration measurement, a rotating speed measurement and a wireless short transmission circuit. The main MCU controller controls the transmission, the reception and the calculation of the phase difference and the amplitude ratio of the far and near antenna signals, and then the resistivity of the rock stratum is calculated according to the corresponding relation between the phase difference and the amplitude ratio and the resistivity; the well deviation is used for measuring the inclination of a well; the tool face measurement is used for measuring the tool face, so that the measurement orientations of resistivity and gamma are determined; the three-dimensional vibration measurement is used for measuring the vibration of the drill collar; the rotating speed measurement is used for measuring the rotating speed of the drill collar; the wireless short transmission circuit is used for data transmission between the underground and the ground.
The resistivity receiving module receives alternating electromagnetic field signals through a point source focusing receiving antenna (2), and data acquisition and processing are completed through a data processing module after filtering modulation, signal conditioning and signal acquisition, wherein the data processing module controls a natural gamma acquisition circuit to realize on-off control and counting acquisition, and the natural gamma acquisition circuit inputs 21V voltage to the natural gamma high-voltage circuit and controls the natural gamma high-voltage circuit to output 900V square wave pulse voltage for excitation, so that the radioactive gamma rays in the stratum are effectively measured.
The point source focusing near receiving antenna and the point source focusing far receiving antenna are combined, the MCU controller controls the transmitting and receiving and calculates the phase difference and the amplitude ratio of the far and near antenna signals, and then the resistivity of the rock stratum is calculated according to the corresponding relation between the phase difference and the amplitude ratio and the resistivity, so that the signal receiving, acquiring and identifying efficiency can be effectively improved. The input voltage of the G-M gamma high-voltage circuit is 21V, the G-M gamma high-voltage circuit is excited by a high-voltage stabilized power supply module, and the square wave pulse output voltage of the natural gamma high-voltage circuit is 900V in order to adapt to the change of the underground gamma high-voltage plateau. The collection and storage are completed through a natural gamma collection circuit, and the counting rates of the multi-channel gamma ray detectors are combined together, so that the statistical precision is optimized. The drill collar can rotate underground, meanwhile, the measuring surface is driven to carry out all-dimensional detection on the periphery of the drill collar, the direction detected by the measuring surface can be detected through the direction detection of the tool surface on the drill collar, and finally the direction detection of resistivity and natural gamma is realized.
And the connection of the sensor module, the data acquisition module, the data processing control circuit module and the power supply module is completed through cables. The resistivity receiving module receives an alternating electromagnetic field signal through a resistivity receiving coil, and data acquisition and processing are completed through a central control module after filtering modulation, signal conditioning and signal acquisition, wherein the central control module controls a natural gamma acquisition circuit to realize on-off control and counting acquisition, and the natural gamma acquisition circuit inputs 18V voltage to the natural gamma high-voltage circuit and controls the natural gamma high-voltage circuit to output 900V square wave pulse voltage for excitation, so that the radioactive gamma rays in the stratum are effectively measured.
Description of the drawings:
FIG. 1 is a schematic view of an azimuthal resistivity structure according to an embodiment of the invention;
FIG. 2 is a schematic block diagram of azimuthal resistivity according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the orientation gamma Geiger Muller tube detection according to the present embodiment;
fig. 4 is a schematic diagram of a wireless short-distance transmission circuit according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a wireless short-distance transmission and reception circuit according to an embodiment of the present invention;
FIG. 6 is a schematic block diagram of a near bit according to an embodiment of the present invention.
In the figure: the device comprises a transmitting antenna 1, a G-M gamma counting tube 2 and a gamma counting tube 3.
The specific implementation mode is as follows:
the embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.
As shown in FIG. 1 and FIG. 2, the near-bit while-drilling azimuthal resistivity and azimuthal gamma measuring device comprises a drill collar pup joint, a sensor module, a data acquisition module, a data processing module and a power module. Four functional groove surfaces are arranged around the drill collar pup joint and are respectively used for installing a sensor module, a data acquisition module, a data processing module and a power module. A cable channel is arranged between the sensor module mounting groove and the acquisition module mounting groove. The front end of the drill collar pup joint is provided with a working surface for detecting the orientation of the drill collar. The near-bit while-drilling azimuth resistivity and azimuth gamma measuring device is connected with a bit at the front end and is connected with a power drilling tool at the rear end.
As shown in FIG. 1, the measurement module in an embodiment of the present invention includes an azimuthal resistivity and azimuthal gamma device. The azimuth resistivity is used for measuring geological resistivity, and the azimuth gamma tube is used for measuring the lithology of the stratum. The azimuth resistivity measuring device consists of a point source focusing transmitting antenna 1, a point source focusing near receiving antenna 2 and a point source focusing far receiving antenna 2. Four mounting grooves are formed in the groove surface of the sensor module and are respectively used for mounting a power source transmitting antenna 1, a transmitting antenna 1 for wireless communication, a G-M gamma counting tube 3, a point source focusing near receiving antenna 2 and a point source focusing far receiving antenna 2. The distance between the far receiving antenna 2 and the transmitting antenna is 60cm, and the distance between the point source focusing near receiving antenna 2 and the point source focusing far transmitting antenna 1 is 15 cm.
As shown in fig. 1 and 2, the cabled channel controls the transmit frequency and power selection of the transmit antenna by the microprocessor of the control circuit. The electromagnetic wave transmitting circuit and the point source focusing transmitting antenna 1 form an electromagnetic wave transmitting module, and the electromagnetic wave receiving circuit and the point source focusing receiving antenna 2 form a resistivity receiving module; the electromagnetic wave transmitting circuit uses a crystal oscillator to output 2MHz sine wave signals. The electromagnetic wave receiving circuit receives the signal of the transmitting circuit by using a dual-channel high-frequency amplifier. The azimuth resistivity is composed of a transmitting antenna, a receiving antenna, an electromagnetic wave transmitting circuit, a receiving circuit and an MCU controller. The MCU controller controls the transmission and the reception and calculates the phase difference and the amplitude ratio of the far and near antenna signals, and then calculates the resistivity of the rock stratum according to the corresponding relation between the phase difference and the resistivity and the amplitude ratio.
As shown in fig. 1 and fig. 2, the natural gamma module 3 of the invention mainly comprises a gamma ray detector consisting of three Geiger counter tubes, which are arranged in a G-M mounting groove at 30 degrees and are mounted in an instrument groove between a point source focusing transmitting antenna 1 and a point source focusing near receiving antenna 2; it is composed of a G-M counting tube, a high voltage generator, a preamplifier, a pulse amplifier and a scaler. A G-M counter tube is one type of gas detector used to determine the intensity of radiation, i.e. the number of particles per unit time. The natural gamma high-voltage circuit is excited by adopting a high-voltage stabilized power supply module, the square wave pulse output voltage of the G-M gamma high-voltage circuit is 900V in order to adapt to the change of the underground gamma high-voltage plateau area, and the collection and storage are completed through the G-M gamma collection circuit.
As shown in figure 2, the receiving circuit of the invention uses a dual-channel high-frequency amplifier to amplify signals received by a far antenna and a near antenna, then the signals enter a phase discriminator to be down-converted to 2KHz, an AGC amplifying circuit is adopted to obtain sinusoidal signals with equal amplitude and different phases, analog voltages related to the phases are output by the phase discriminator, and then the data enter a CPU to be solved and phase difference is calculated and the resistivity value is calculated. The standby intermittent operation of the circuit with the total power of 0.6W can reach 200 hours.
In the invention, as shown in fig. 1 and fig. 2, a natural gamma module 2 mainly comprises three Geiger counting tubes to form a gamma ray detector, wherein the counting tubes are arranged in a G-M mounting groove at 30 degrees and are mounted in an instrument groove between a point source focusing transmitting antenna 1 and a point source focusing near receiving antenna 2; it is composed of a G-M counting tube, a high voltage generator, a preamplifier, a pulse amplifier and a scaler. The natural gamma high-voltage circuit is excited by adopting a high-voltage stabilized power supply module, the square wave pulse output voltage of the G-M gamma high-voltage circuit is 900V in order to adapt to the change of the underground gamma high-voltage plateau area, and the collection and storage are completed through the G-M gamma collection circuit.
The use method of the near-bit while-drilling azimuth resistivity and azimuth gamma measuring device comprises the following steps:
the point source focusing near receiving antenna and the point source focusing far receiving antenna are combined, the MCU controller controls the transmitting and receiving and calculates the phase difference and the amplitude ratio of the far and near antenna signals, and then the resistivity of the rock stratum is calculated according to the corresponding relation between the phase difference and the amplitude ratio and the resistivity, so that the signal receiving, acquiring and identifying efficiency can be effectively improved. The input voltage of the G-M gamma high-voltage circuit is 21V, the G-M gamma high-voltage circuit is excited by a high-voltage stabilized power supply module, and the square wave pulse output voltage of the natural gamma high-voltage circuit is 900V in order to adapt to the change of the underground gamma high-voltage plateau. The collection and storage are completed through a natural gamma collection circuit, and the counting rates of the multi-channel gamma ray detectors are combined together, so that the statistical precision is optimized. The drill collar can rotate underground, meanwhile, the measuring surface is driven to carry out all-dimensional detection on the periphery of the drill collar, the direction detected by the measuring surface can be detected through the direction detection of the tool surface on the drill collar, and finally the direction detection of resistivity and natural gamma is realized.
And the connection of the sensor module, the data acquisition module, the data processing control circuit module and the power supply module is completed through cables. The resistivity receiving module receives an alternating electromagnetic field signal through a resistivity receiving coil, and data acquisition and processing are completed through a central control module after filtering modulation, signal conditioning and signal acquisition, wherein the central control module controls a natural gamma acquisition circuit to realize on-off control and counting acquisition, and the natural gamma acquisition circuit inputs 21V voltage to the natural gamma high-voltage circuit and controls the natural gamma high-voltage circuit to output 900V square wave pulse voltage for excitation, so that the radioactive gamma rays in the stratum are effectively measured.
Claims (8)
1. A near-bit while-drilling orientation resistivity and orientation gamma measuring device is characterized by comprising a drill collar pup joint, a sensor module, a data acquisition module, a data processing module and a power module. Four functional groove surfaces are arranged around the drill collar pup joint and are respectively used for installing a sensor module, a data acquisition module, a data processing module and a power supply module; a cable channel is arranged between the sensor module mounting groove and the acquisition module mounting groove; the near-bit short section is provided with an MEMS acceleration and magnetic resistance sensor and is used for detecting the well deviation, the tool surface and the rotating speed of the drill collar; the front end of the near-bit measuring short section is connected with a bit, and the rear end of the near-bit measuring short section is connected with a power drilling tool.
2. The near-bit while drilling azimuthal resistivity and azimuthal gamma measurement device of claim 1, wherein the sensor module comprises an azimuthal resistivity and azimuthal gamma device, the azimuthal resistivity is used for measuring formation resistivity, and the azimuthal gamma tube is used for measuring formation lithology. The azimuth resistivity measuring device is composed of a transmitting antenna (1) of resistivity, a transmitting antenna (1) for wireless communication, two low-power point source focusing antenna receiving antennas (3) and a gamma counting tube (3). Four mounting grooves are formed in the sensor module functional groove and are used for mounting a power source transmitting antenna (1), a transmitting antenna (1) for wireless communication, a G-M gamma counting tube (2), a point source focusing near receiving antenna (3) and a point source focusing far receiving antenna (3) respectively. The point source focusing receiving antenna (3) and the point source focusing transmitting antenna (1) are respectively positioned on two sides of the G-M gamma tube (2), the point source focusing transmitting antenna (1) is positioned at the uppermost end of the drill collar sub, the point source focusing far receiving antenna (3) is positioned at the lowermost end of the drill collar sub, the distance between the far receiving antenna (3) and the transmitting antenna is 40cm, and the distance between the point source focusing near receiving antenna (3) and the point source focusing far transmitting antenna (1) is 5 cm.
3. The near-bit while drilling azimuthal resistivity and azimuthal gamma measurement device of claim 2, wherein: the cabled channel controls the transmission frequency and power selection of the transmitting antenna through a microprocessor of the control circuit. The data acquisition module comprises a resistivity transmitting and receiving circuit and a gamma counting tube high-voltage circuit. The resistivity transmitting circuit and the point source focusing transmitting antenna (1) form a resistivity transmitting module; the resistivity receiving circuit and the point source focusing receiving antenna (3) form a resistivity receiving module; the gamma detection module is composed of a gamma counting tube high-voltage circuit and a G-M counting tube. The electromagnetic wave transmitting circuit uses a crystal oscillator to output 2MHz sine wave signals; the resistivity receiving circuit receives a signal of the transmitting circuit by using a dual-channel high-frequency amplifier; the high-voltage circuit of the gamma counting tube is excited by 900V square wave pulse voltage.
4. The near-bit while drilling azimuthal resistivity and azimuthal gamma measurement device of claim 2, wherein: the natural gamma module (2) mainly comprises three groups of Geiger counting tubes to form a multi-channel gamma ray detector, the three groups of counting tubes are arranged in a G-M mounting groove at 30 degrees and are arranged in an instrument groove between a point source focusing transmitting antenna (1) and a point source focusing near receiving antenna (3); the natural gamma high-voltage circuit is excited by adopting a high-voltage stabilized power supply module, the square wave pulse output voltage of the G-M gamma high-voltage circuit is 900V in order to adapt to the change of the underground gamma high-voltage plateau, the collection and storage are completed through the G-M gamma collection circuit, and the counting rates of the multi-channel gamma ray detector are combined together so as to optimize the statistical precision.
5. The near-bit while drilling azimuthal resistivity and azimuthal gamma measurement device of claim 1, wherein: the data processing module comprises a main MCU, a well deviation, a tool face measurement, a three-dimensional vibration measurement, a rotating speed measurement and a wireless short transmission circuit. The main MCU controller controls the transmission, the reception and the calculation of the phase difference and the amplitude ratio of the far and near antenna signals, and then the resistivity of the rock stratum is calculated according to the corresponding relation between the phase difference and the amplitude ratio and the resistivity; the well deviation is used for measuring the inclination of a well; the toolface measurement is used for measuring the orientation of the toolface, so that the resistivity and gamma measurement orientations are determined; the three-dimensional vibration measurement is used for recording and measuring vibration in the drilling process; the rotating speed measurement is used for measuring the rotating speed of the drill collar; the wireless short transmission circuit is used for data transmission between the underground and the ground.
6. The near-bit while drilling azimuthal resistivity and azimuthal gamma measurement device of claim 1, wherein: the resistivity receiving module receives alternating electromagnetic field signals through a point source focusing receiving antenna (3), and data acquisition and processing are completed through a data processing module after filtering modulation, signal conditioning and signal acquisition, wherein the data processing module controls a natural gamma acquisition circuit to realize on-off control and counting acquisition, and the natural gamma acquisition circuit inputs 18V voltage to the natural gamma high-voltage circuit and controls the natural gamma high-voltage circuit to output 900V square wave pulse voltage for excitation, so that the radioactive gamma rays in the stratum are effectively measured.
7. The near-bit while drilling azimuthal resistivity and azimuthal gamma measurement device of claim 1, wherein: the power module mainly comprises a battery frame and two groups of 5.5AH high-temperature battery packs, wherein the battery frame is made of nonmagnetic materials, an erosion-resistant protective layer is arranged inside the battery frame to improve the erosion-resistant capability, the high-temperature battery packs are arranged outside grooves, the batteries are connected in series to increase the voltage and are fixed on a battery framework, and the power module is connected with cables in cable channels through cable slots.
8. The near-bit while drilling azimuthal resistivity and azimuthal gamma measurement device according to any one of claims 1 to 7, comprising the following processes:
the point source focusing near receiving antenna and the point source focusing far receiving antenna are combined, the MCU controller controls the transmitting and receiving and calculates the phase difference and the amplitude ratio of the far and near antenna signals, and then the resistivity of the rock stratum is calculated according to the corresponding relation between the phase difference and the amplitude ratio and the resistivity, so that the signal receiving, acquiring and identifying efficiency can be effectively improved; the input voltage of the G-M gamma high-voltage circuit is 18V, the G-M gamma high-voltage circuit is excited by a high-voltage stabilized power supply module, and the square wave pulse output voltage of the natural gamma high-voltage circuit is 900V in order to adapt to the change of an underground gamma high-voltage plateau; the collection and storage are completed through a natural gamma collection circuit, and the counting rates of the multi-channel gamma ray detectors are combined together, so that the statistical precision is optimized. The drill collar can rotate underground, meanwhile, the measuring surface is driven to carry out all-dimensional detection on the periphery of the drill collar, the direction detected by the measuring surface can be detected through the direction detection of the tool surface on the drill collar, and finally the direction detection of the resistivity and the natural gamma is realized;
module function combination and data uploading are realized through a cable channel; the connection of the sensor module, the data acquisition module, the data processing control circuit module and the power supply module is completed through cables; the resistivity receiving module receives an alternating electromagnetic field signal through a resistivity receiving coil, and data acquisition and processing are completed through the central control module after filtering modulation, signal conditioning and signal acquisition; the central control module controls the natural gamma acquisition circuit to realize on-off control and counting acquisition, and the natural gamma acquisition circuit inputs 18V voltage to the natural gamma high-voltage circuit to control the natural gamma high-voltage circuit to output 900V square wave pulse voltage for excitation, so that the radioactive gamma rays in the stratum can be effectively measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111652077.3A CN114320281A (en) | 2021-12-30 | 2021-12-30 | Near-bit while-drilling azimuth resistivity and azimuth gamma measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111652077.3A CN114320281A (en) | 2021-12-30 | 2021-12-30 | Near-bit while-drilling azimuth resistivity and azimuth gamma measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114320281A true CN114320281A (en) | 2022-04-12 |
Family
ID=81019553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111652077.3A Withdrawn CN114320281A (en) | 2021-12-30 | 2021-12-30 | Near-bit while-drilling azimuth resistivity and azimuth gamma measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114320281A (en) |
Cited By (1)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118327554A (en) * | 2024-04-10 | 2024-07-12 | 北京城建勘测设计研究院有限责任公司 | A drilling radar antenna carrying device and a drilling radar antenna carrying system |
Citations (6)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482014A (en) * | 2009-02-23 | 2009-07-15 | 中国石化集团胜利石油管理局钻井工艺研究院 | Rotary-focusing gamma measuring apparatus and method |
| CN106437686A (en) * | 2016-09-19 | 2017-02-22 | 中国石油集团渤海钻探工程有限公司 | Device for quickly transmitting LWD (Logging While Drilling) data through electromagnetic wave signal |
| US20170242153A1 (en) * | 2016-02-19 | 2017-08-24 | China Petroleum & Chemical Corporation | System for Geosteering and Formation Evaluation Utilizing Near-Bit Sensors |
| CN108442926A (en) * | 2018-06-05 | 2018-08-24 | 北京捷威思特科技有限公司 | A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger |
| CN108756864A (en) * | 2018-04-27 | 2018-11-06 | 中国石油天然气集团有限公司 | A kind of orientation electromagnetic resistivity imaging logging while drilling apparatus |
| CN109538187A (en) * | 2018-12-05 | 2019-03-29 | 中石化石油工程技术服务有限公司 | A kind of underground resistivity gamma integrated measurement system and method |
-
2021
- 2021-12-30 CN CN202111652077.3A patent/CN114320281A/en not_active Withdrawn
Patent Citations (6)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482014A (en) * | 2009-02-23 | 2009-07-15 | 中国石化集团胜利石油管理局钻井工艺研究院 | Rotary-focusing gamma measuring apparatus and method |
| US20170242153A1 (en) * | 2016-02-19 | 2017-08-24 | China Petroleum & Chemical Corporation | System for Geosteering and Formation Evaluation Utilizing Near-Bit Sensors |
| CN106437686A (en) * | 2016-09-19 | 2017-02-22 | 中国石油集团渤海钻探工程有限公司 | Device for quickly transmitting LWD (Logging While Drilling) data through electromagnetic wave signal |
| CN108756864A (en) * | 2018-04-27 | 2018-11-06 | 中国石油天然气集团有限公司 | A kind of orientation electromagnetic resistivity imaging logging while drilling apparatus |
| CN108442926A (en) * | 2018-06-05 | 2018-08-24 | 北京捷威思特科技有限公司 | A kind of nearly drill bit electromagnetic resistivity adds gamma ray logger |
| CN109538187A (en) * | 2018-12-05 | 2019-03-29 | 中石化石油工程技术服务有限公司 | A kind of underground resistivity gamma integrated measurement system and method |
Cited By (2)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118327554A (en) * | 2024-04-10 | 2024-07-12 | 北京城建勘测设计研究院有限责任公司 | A drilling radar antenna carrying device and a drilling radar antenna carrying system |
| CN118327554B (en) * | 2024-04-10 | 2025-03-21 | 北京城建勘测设计研究院有限责任公司 | A drilling radar antenna carrying device and a drilling radar antenna carrying system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2014375331B2 (en) | 2017-02-23 | System and method for making downhole measurements |
| CN101603423B (en) | 2013-06-05 | Direct current method for bed-parallel advanced detection of water bearing structure in mine tunnel |
| US11906692B2 (en) | 2024-02-20 | Nuclear logging tools and applications thereof |
| US10473810B2 (en) | 2019-11-12 | Near-bit ultradeep measurement system for geosteering and formation evaluation |
| CN1769645A (en) | 2006-05-10 | Horizontal Directional Drilling Steering Positioning Method and Positioning Instrument |
| CN101289935A (en) | 2008-10-22 | Near-bit geological guiding probe system |
| CN212083694U (en) | 2020-12-04 | Downhole time-domain electromagnetic multi-component remote detection instrument and detection system based thereon |
| CN109143378B (en) | 2020-06-09 | Secondary time difference method for bedding advanced detection of water-containing structure in coal mine tunnel |
| CN111337988B (en) | 2024-08-02 | Downhole time domain electromagnetic multi-component remote detection instrument |
| CN112112624B (en) | 2023-08-25 | Fine and remote detection device and method for multi-parameter drilling geophysical prospecting under coal mine |
| US12092787B2 (en) | 2024-09-17 | Apparatus and method for obtaining real-time true formation porosity using pulsed neutron well logging tool having dual-function detectors |
| CN111677496B (en) | 2023-11-17 | Underground electromagnetic wave logging while drilling instrument for coal mine |
| CN110344823A (en) | 2019-10-18 | It is a kind of based on rotary steerable tool with bore gamma resistivity imaging tool device |
| CN106907145A (en) | 2017-06-30 | A kind of apparent resistivity measuring system and method with brill advanced prediction |
| CN107346032A (en) | 2017-11-14 | A kind of wireless controlled passes the Tunnel prediction system and method for acceleration transducer |
| EP2784550A2 (en) | 2014-10-01 | Acoustic borehole imaging tool |
| CN101793973A (en) | 2010-08-04 | While-drilling electric method |
| CN114320281A (en) | 2022-04-12 | Near-bit while-drilling azimuth resistivity and azimuth gamma measuring device |
| US12216240B2 (en) | 2025-02-04 | Method and apparatus for obtaining real-time formation gas saturation |
| CN207296995U (en) | 2018-05-01 | A kind of high accuracy Integral wireless measurement-while-drilling system |
| CN214586060U (en) | 2021-11-02 | Geophysical exploration system based on Internet of things |
| CN104834014A (en) | 2015-08-12 | Radioactive mineral geological exploration device |
| CN109884720B (en) | 2021-07-30 | Device and method for determining three-dimensional composite frequency electromagnetic detection of water-rich ground well |
| US12248115B2 (en) | 2025-03-11 | Method and apparatus for using pulsed neutron generators and dual-function detectors to obtain formation mineralogy |
| US12196911B2 (en) | 2025-01-14 | Method and apparatus for obtaining real-time downhole oil saturation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 2022-04-12 | PB01 | Publication | |
| 2022-04-12 | PB01 | Publication | |
| 2022-04-29 | SE01 | Entry into force of request for substantive examination | |
| 2022-04-29 | SE01 | Entry into force of request for substantive examination | |
| 2023-12-05 | WW01 | Invention patent application withdrawn after publication | |
| 2023-12-05 | WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220412 |