CN202081888U - Near-bit geo-steering system - Google Patents
Near-bit geo-steering system Download PDFInfo
- Publication number
- CN202081888U CN202081888U CN201120193561XU CN201120193561U CN202081888U CN 202081888 U CN202081888 U CN 202081888U CN 201120193561X U CN201120193561X U CN 201120193561XU CN 201120193561 U CN201120193561 U CN 201120193561U CN 202081888 U CN202081888 U CN 202081888U
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Abstract
The utility model provides a near-bit geo-steering system. A wireless short-pass transmitting system comprises an MWD (measurement while drilling) wireless receiving short joint, a receiving antenna and a transmitting antenna; a near-bit measurement short joint comprises a resistivity module, a detecting module, measuring modules, a body and a sleeve; an MWD underground inclination measuring system comprises a pulse signal generator, a centralizer, a directional measurement probe short joint and a gamma measurement device; the MWD underground inclination measuring system is arranged at the top end of the system; the receiving antenna is arranged between the MWD wireless receiving short joint and a screw drilling tool; the near-bit measurement short joint is arranged between a screw drilling tool assembly and a bit; a measuring point is close to the bit; and the transmitting antenna is arranged on a near-bit measurement short joint system. The near-bit geo-steering system has the advantages that the structure is simple and the near-bit geo-steering system is fast and convenient.
Description
Technical field
The utility model relates to a kind of petroleum machinery device, and especially a kind of drill bit auxiliary machinery specifically is a kind of geosteering tool that is used for oil gas well bore track, nearly drill bit formation parameter real-time analysis.
Background technology
Oil well logging is the requisite technological service ingredient of drilling engineering in the petroleum natural gas exploration, and the logging tool that routine is used to measure all belongs to the brill back to be measured, can not real-time and effective analysis and Controlling Borehole Trajectory.Along with the needs of exploitation, require engineers and technicians to understand well track and formation information variation more timely, adjust attitude timely, improve drilling efficiency for the identification oil sheet especially, significant.
Present domestic measurement while drilling mainly contains MWD and LWD two big classes, and MWD is primarily aimed at well track and measures, and is being positioned at more than the drill bit about 10 meters for the location point of measuring, and promptly more than the helicoid hydraulic motor, the data of measurement postpone the information in current actual drilling strata far away.LWD has increased some formation informations to measure on the basis of MWD, the problem same with MWD is that measuring position point also postpones far away in current drilling strata.If measure at oil sheet, routine can't satisfy the measurement needs with boring instrument.
Summary of the invention
The purpose of this utility model is to avoid the deficiencies in the prior art and a kind of near-bit geological guidance system is provided.Be installed between drill bit and the helicoid hydraulic motor, measure formation information, well track, mechanical parameter etc., all very close brill of above-mentioned parameter is met current stratum, make the engineer early make judgement, instruct drilling well.
The purpose of this utility model is achieved in that a kind of near-bit geological guidance system, comprise ground information processing system, MWD down-hole deviational survey system, nearly drill bit measurement pipe nipple, wireless short pass emission system, it is characterized in that: wireless short pass emission system comprises MWD wireless receiving pipe nipple, reception antenna and transmitting antenna; Nearly drill bit is measured pipe nipple and is comprised resistivity module, detection, measurement module, body and sleeve; MWD down-hole deviational survey system comprises pulse signal generator, centralizer, orientation survey inserting tube pipe nipple, gamma measuring apparatus; MWD down-hole deviational survey system and device is loaded on the top of system, between MWD wireless receiving pipe nipple and the helicoid hydraulic motor reception antenna is housed, nearly drill bit is measured pipe nipple and is loaded between helicoid hydraulic motor combination and the drill bit, and the position of survey mark is near drill bit, and transmitting antenna is loaded on nearly drill bit and measures in the pipe nipple system.
There is passage in the main center that nearly drill bit is measured pipe nipple, and resistivity module, orientation gamma detection module, drill speed measurement module, attitude measurement module, bottom hole pressure measurement module are installed on the main body; The outside is with sleeve, and wireless transmit antenna and resistivity coil are housed on the sleeve.
Nearly drill bit is measured pipe nipple and is gathered various informations parameter, through storage, uploading data in real time encodes, send to the radio receiver of mwd system, by this device data are transmitted to the MWD instrument again, by MWD down-hole part with data upload to the MWD ground system, finally data are decoded, analyze, are published picture by ground information processing system.
Nearly drill bit is measured pipe nipple and is comprised 12 electronic modular unit, comprises battery module, pipe nipple control module, negative high voltage module, data-interface, gamma detection unit, orientation, orientation survey unit, orientation survey unit, rotating speed, torque measurement unit, pressure sensor measuring unit, memory cell, resistivity probe unit, wireless transmit modulation module
Advantage of the present utility model has can carry out the collection of near-bit geological information parameter, and data measurement points is near drill bit; Can in the process of nearly drill bit pup joint rotation, measure in real time; Modularized circuit, each unit module of nearly drill bit pup joint can be pegged graft voluntarily; Because nearly drill bit pup joint separates configurable different helicoid hydraulic motor with screw rod; Can realize the measurement function of orientation gamma in the rotary course.
Description of drawings
Fig. 1 is a kind of near-bit geological guidance system of the utility model structural representation.
Fig. 2 is a MWD of the present utility model down-hole deviational survey system architecture schematic diagram.
Fig. 3 is that nearly drill bit of the present utility model is measured the pipe nipple structural representation.
Fig. 4 is that nearly drill bit of the present utility model is measured pipe nipple electronic functional module composition diagram.
Among the figure, 1 is MWD down-hole deviational survey system; 2 is MWD wireless receiving pipe nipple; 3 is reception antenna; 4 is helicoid hydraulic motor; 5 is that nearly drill bit is measured pipe nipple; 6 is drill bit; 7 is ground information processing system; 8 is pulse signal generator; 9 is centralizer; 10 are orientation survey inserting tube pipe nipple; 11 is gamma measuring apparatus; 15 is transmitting antenna; 16 is the resistivity module; 17 are detection, measurement module; 18 is data-interface; S101 is a battery module; S102 is a CPU control centre; S103 is the negative high voltage modulation module; S104 is storage data read interface; S105 is gamma detection unit, orientation; S106 is the orientation survey unit; S107 is rotating speed, torque measurement unit; S108 is a pressure measurement cell; S109 is a memory cell; S110 is the resistivity probe unit; S111 is the wireless transmit modulation module; S112 and S113 are the wireless transmit antenna.
The specific embodiment
A kind of near-bit geological guidance system, comprise ground information processing system 7, MWD down-hole deviational survey system 1, nearly drill bit measurement pipe nipple 5, wireless short pass emission system, it is characterized in that: wireless short pass emission system comprises MWD wireless receiving pipe nipple 2, reception antenna 3 and transmitting antenna 15; Nearly drill bit is measured pipe nipple 5 and is comprised resistivity module 16, detection, measurement module 17, body and sleeve; MWD down-hole deviational survey system 1 comprises pulse signal generator 8, centralizer 9, orientation survey inserting tube pipe nipple 10, gamma measuring apparatus 11; MWD down-hole deviational survey system and device 1 is loaded on the top of system, between MWD wireless receiving pipe nipple 2 and the helicoid hydraulic motor 4 reception antenna 3 is housed, nearly drill bit is measured pipe nipple 5 and is loaded between helicoid hydraulic motor 4 combinations and the drill bit 6, and the position of survey mark is near drill bit 6, and transmitting antenna 15 is loaded on nearly drill bit and measures on the pipe nipple 5.
There is passage in the main center that nearly drill bit is measured pipe nipple 5, and resistivity module 16, orientation gamma detection module, drill speed measurement module, attitude measurement module, bottom hole pressure measurement module are installed on the main body; The outside is with sleeve, and wireless transmit antenna 15 and resistivity coil are housed on the sleeve.
Nearly drill bit is measured pipe nipple 5 and is gathered various informations parameter, through storage, uploading data in real time encodes, send to the radio receiver of mwd system, by this device data are transmitted to the MWD instrument again, by MWD down-hole part with data upload to the MWD ground system, finally decode, analyze, publish picture by 7 pairs of data of ground information processing system.
Nearly drill bit is measured pipe nipple 5 and is comprised 12 electronic modular unit, comprises battery module S101, pipe nipple control module, the S102 of CPU control centre; Data-interface 18, orientation gamma detection cell S 105, orientation survey cell S 106, rotating speed, torque measurement cell S 107, pressure measurement cell S108, memory cell S109, resistivity probe unit S110, wireless transmit modulation module S111.
Be described in detail embodiment of the present utility model below in conjunction with accompanying drawing.
As Fig. 1: be near-bit geological guidance system schematic diagram, mainly comprise ground information processing system 7, MWD downhole system and nearly drill bit measuring system.Owing to adopt independently near drill bit to measure pipe nipple 5, can dispose different helicoid hydraulic motor 4 as required and use.The systemic-function implementation process, the functional module of nearly drill bit pup joint is carried out the collection and the analysis of various data earlier, then all data are stored after regular, again part is needed engineer's data of understanding in real time, be transmitted to wireless receiving antenna 3 pipe nipples of MWD by wireless antenna, this pipe nipple is transmitted to MWD control centre as data switching center with data, by MWD control centre data are encoded again, and then the control slurry pulsator produces clocklike, and the mud pressure signal changes, ground system is gathered faint mud pressure variations signal by pressure transmitter, earlier signal is carried out demodulation by ground hardware handles system, and then by 3 grades of filtering of software, curve after obtaining handling by the software analysis coding, is changed data again, calculate, show.The well depth system also sends to software on ground with the depth data of correspondence simultaneously, by comprehensive processing, shows the required parameter of engineer by computer, prints as needs, can provide the geological information curve map.
As Fig. 2: form schematic diagram for the mwd system down-hole, mainly comprise pulse signal generator 8 and orientation survey inserting tube pipe nipple 10.The MWD downhole system is finished on the basis of conventional orientation survey, after receiving the nearly drill bit measurement parameter that passes on from wireless antenna, parameter is analyzed, then valid data and routine data are together sorted out coding, form the complete sequence of a cover, by inserting tube control centre, pulse signals generator 8 sends control signal then, makes pulse signal generator 8 clocklike produce the mud pressure signal.This pulse signal generator 8 can dispose different specifications and models as required.MWD downhole instrument string is mainly finished the function that data-signal sends earthward.
As Fig. 3: measure pipe nipple 5 for nearly drill bit and form schematic diagrames, be divided into body and outer sleeve two parts on frame for movement, there is slurry channel at the body center, and the mud that is flowed out by helicoid hydraulic motor 4 all flow to drill bit 6 by this passage.Various functional modules are installed on the body, and then the cover upper bush, and it is isolated from the outside.Wireless transmit antenna 15 and resistivity coil all are installed on the sleeve.Realize with being connected between the body by flexible jumper.Each functional module of nearly drill bit 6 is started working, collect data after, convert and analyze, with the valid data storage, and extract partial data, then by master control center control wireless antenna modulation module, by wireless antenna data are launched, finish reception by the receiving terminal of MWD.This pipe nipple has special-purpose data-interface 18, mainly finishes the setting with inner various parameters of reading of storage data.
As Fig. 4: be nearly drill bit electronic functional module composition diagram, this measurement pipe nipple mainly comprises 13 electronic modular unit.S101 is a battery module, is used to lay battery pack, and is equipped with corresponding D C/DC, linear voltage-stabilizing circuit and safety protective circuit, final output ± 3.3V, ± 5V, ± dc source of 13V, for all functional modules of measurement pipe nipple provide the power supply needs.S102 is the control module unit of pipe nipple, controls exchanges data between each measuring unit module by the CAN bus, and the function of controlling each module realizes.S103 is the negative high voltage modulation module, mainly be the low dc voltage of ± 5V is reduced to-1500V about (the probe unit different needs according to configuration is regulated) use for the gamma detection module.Data-interface 18, it adopts the mode of CAN bus, can take apart by the plug of outside, expose bonder terminal then, linkage by speciality then, supporting required communication test device, can by computer directly with measure the pipe nipple dialogue, and can be as required and each module direct dialogue.S105 is gamma detection unit, orientation, and the gamma ray intensity of Different Strata can be discerned in this unit under the duty of rotation, and this unit is relatively independent, can finish surveying work voluntarily.S106 is the orientation survey unit, and it is by being equipped with 3 accelerometers, pairwise orthogonal, gather the state value of each accelerometer then,, can obtain current attitude by certain calculation, owing to adopt special Mathematical Modeling, can under the adverse circumstances of vibrations and rotation, measure the attitude value.S107 is rotating speed, torque measurement unit, mainly finishes the rotating speed and the torque measurement of this pipe nipple, and this rotating speed also is the drilling speed of shaft bottom drill bit simultaneously.S108 is a pressure measurement cell, and it obtains bottom pressure information by miniature pressure transmitter, does analysis then, on the basis of grasping pressure information, also will obtain the vibration information situation of current down-hole.S109 is a memory cell, and its function is exactly that all measured information of pipe nipple are measured in storage, and situation of change in the course of work of each key point of record measurement pipe nipple.S110 is the resistivity probe unit, and it comprises coil and modulation module 2 major parts.S111 is the wireless transmit modulation module, and corresponding wireless transmit and receiving coil are all on sleeve, and wherein coil is also as the emission receiving coil of resistivity.After each measuring unit operate as normal, they are sent to the requirement at resulting data based master control center master control, and store.The working condition of each module of master control center monitoring then, and data are stored, wherein partial data sends to the MWD reception antenna by wireless transmitter module.
Claims (4)
1. near-bit geological guidance system, comprise that ground information processing system, MWD down-hole deviational survey system, nearly drill bit measure pipe nipple system, wireless short pass emission system, it is characterized in that: wireless short pass emission system comprises MWD wireless receiving pipe nipple, reception antenna and transmitting antenna; Nearly drill bit is measured pipe nipple and is comprised resistivity module, detection, measurement module, body and sleeve; MWD down-hole deviational survey system comprises pulse signal generator, centralizer, orientation survey inserting tube pipe nipple, gamma measuring apparatus; MWD down-hole deviational survey system and device is loaded on the top of system, between MWD wireless receiving pipe nipple and the helicoid hydraulic motor reception antenna is housed, nearly drill bit is measured pipe nipple and is loaded between helicoid hydraulic motor combination and the drill bit, and the position of survey mark is near drill bit, and transmitting antenna is loaded on nearly drill bit and measures in the pipe nipple system.
2. a kind of near-bit geological guidance system according to claim 1, it is characterized in that: there is passage in the main center that nearly drill bit is measured pipe nipple, and resistivity module, orientation gamma detection module, drill speed measurement module, attitude measurement module, bottom hole pressure measurement module are installed on the main body; The outside is with sleeve, and wireless transmit antenna and resistivity coil are housed on the sleeve.
3. a kind of near-bit geological guidance system according to claim 1, it is characterized in that: nearly drill bit is measured pipe nipple and is gathered various informations parameter, through storage, uploading data in real time encodes, send to the radio receiver of mwd system, by this device data are transmitted to the MWD instrument again, by MWD down-hole part with data upload to the MWD ground system, finally data are decoded, analyze, are published picture by ground information processing system.
4. a kind of near-bit geological guidance system according to claim 1, it is characterized in that: nearly drill bit is measured pipe nipple and is comprised 12 electronic modular unit, comprises battery module, pipe nipple control module, negative high voltage module, data-interface, gamma detection unit, orientation, orientation survey unit, orientation survey unit, rotating speed, torque measurement unit, pressure sensor measuring unit, memory cell, resistivity probe unit, wireless transmit modulation module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120193561XU CN202081888U (en) | 2011-06-10 | 2011-06-10 | Near-bit geo-steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120193561XU CN202081888U (en) | 2011-06-10 | 2011-06-10 | Near-bit geo-steering system |
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| CN202081888U true CN202081888U (en) | 2011-12-21 |
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| CN201120193561XU Expired - Fee Related CN202081888U (en) | 2011-06-10 | 2011-06-10 | Near-bit geo-steering system |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418516A (en) * | 2011-12-30 | 2012-04-18 | 中天启明石油技术有限公司 | Near-bit orientation parameter measuring device while drilling |
| CN102518425A (en) * | 2011-12-30 | 2012-06-27 | 斯伦贝谢金地伟业油田技术(山东)有限公司 | Directional gamma logging-while-drilling tool |
| CN103266887A (en) * | 2013-05-14 | 2013-08-28 | 中国石油集团长城钻探工程有限公司 | Instrument for measuring deep resistivity through wireless short-distance transmission signals and application method thereof |
| CN104854555A (en) * | 2012-11-13 | 2015-08-19 | 界标制图有限公司 | System, method and computer program product for a rug plot for geosteering applications |
| CN105370271A (en) * | 2015-11-30 | 2016-03-02 | 北京六合伟业科技股份有限公司 | Measuring device for combustible ice detection |
| CN106351644A (en) * | 2016-10-18 | 2017-01-25 | 中石化石油工程技术服务有限公司 | Method for monitoring wellbore trajectory in real time while drilling for gas drilling |
| CN106499386A (en) * | 2016-12-16 | 2017-03-15 | 北京科技大学 | A kind of nearly drill bit logging system and method based on coupled communication |
| CN106677760A (en) * | 2017-01-04 | 2017-05-17 | 北京赛诺凤凰能源科技有限公司 | Power supply type near-bit geological guiding measuring short section not provided with power source |
| CN106761712A (en) * | 2016-12-28 | 2017-05-31 | 山东大学 | Downhole wireless electromagnetism short pass method and system based on MSK modulation |
| CN107035360A (en) * | 2017-04-28 | 2017-08-11 | 山东鼎盛精工股份有限公司 | Near-bit geo-steering system |
| CN107313771A (en) * | 2017-07-07 | 2017-11-03 | 贝兹维仪器(苏州)有限公司 | A kind of nearly bit measuring instrument with resistivity measurement function |
| CN107339098A (en) * | 2017-07-11 | 2017-11-10 | 北京泰瑞博创科技有限公司 | A kind of measurement while drilling drilling tool and its measurement pipe nipple |
| 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 |
| CN108678733A (en) * | 2018-06-22 | 2018-10-19 | 中国电子科技集团公司第二十二研究所 | Nearly drill bit multi-parameter drilling measuring equipment, method and device |
| CN110424957A (en) * | 2019-07-31 | 2019-11-08 | 奥瑞拓能源科技股份有限公司 | One kind is with brill electromagnetic wave azimuthal resistivity measuring instrument |
| CN110513104A (en) * | 2018-05-21 | 2019-11-29 | 中国石油化工股份有限公司 | One kind is with brill orientation combination metering device |
| WO2020211842A1 (en) * | 2019-04-19 | 2020-10-22 | 万晓跃 | Pose monitoring apparatus and method for geosteering system |
| CN111852443A (en) * | 2020-06-11 | 2020-10-30 | 中国海洋石油集团有限公司 | Short section and nearly drill bit measuring device under nearly drill bit measurement |
| CN111852444A (en) * | 2020-06-11 | 2020-10-30 | 中国海洋石油集团有限公司 | Lower short section for measurement while drilling near drill bit and measurement while drilling near drill bit measuring device |
| CN111911134A (en) * | 2020-07-10 | 2020-11-10 | 中石化江钻石油机械有限公司 | Near-bit geological guiding system |
| CN112696189A (en) * | 2020-12-16 | 2021-04-23 | 成都多贝石油工程技术有限公司 | Near-bit rapid detection device and method |
| CN113482606A (en) * | 2021-05-14 | 2021-10-08 | 西南石油大学 | Underground signal receiving and transmitting device |
| CN113719237A (en) * | 2021-08-23 | 2021-11-30 | 中煤科工集团西安研究院有限公司 | Broken soft thin coal seam gas extraction directional long drilling construction drilling tool combination and method |
| CN114033361A (en) * | 2021-10-22 | 2022-02-11 | 中国石油大学(华东) | Near-bit multi-parameter underground measurement and control system while drilling |
| CN107339098B (en) * | 2017-07-11 | 2024-04-26 | 北京泰瑞博创科技有限公司 | Measurement while drilling tool and measurement nipple thereof |
-
2011
- 2011-06-10 CN CN201120193561XU patent/CN202081888U/en not_active Expired - Fee Related
Cited By (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518425A (en) * | 2011-12-30 | 2012-06-27 | 斯伦贝谢金地伟业油田技术(山东)有限公司 | Directional gamma logging-while-drilling tool |
| CN102418516B (en) * | 2011-12-30 | 2014-12-17 | 中天启明石油技术有限公司 | Near-bit orientation parameter measuring device while drilling |
| CN102418516A (en) * | 2011-12-30 | 2012-04-18 | 中天启明石油技术有限公司 | Near-bit orientation parameter measuring device while drilling |
| CN104854555A (en) * | 2012-11-13 | 2015-08-19 | 界标制图有限公司 | System, method and computer program product for a rug plot for geosteering applications |
| CN103266887A (en) * | 2013-05-14 | 2013-08-28 | 中国石油集团长城钻探工程有限公司 | Instrument for measuring deep resistivity through wireless short-distance transmission signals and application method thereof |
| CN103266887B (en) * | 2013-05-14 | 2015-11-18 | 中国石油集团长城钻探工程有限公司 | A kind of instrument by the dark resistivity of wireless short pass signal measurement and using method thereof |
| CN105370271B (en) * | 2015-11-30 | 2018-05-01 | 北京六合伟业科技股份有限公司 | A kind of measuring device for combustible ice detection |
| CN105370271A (en) * | 2015-11-30 | 2016-03-02 | 北京六合伟业科技股份有限公司 | Measuring device for combustible ice detection |
| CN106351644A (en) * | 2016-10-18 | 2017-01-25 | 中石化石油工程技术服务有限公司 | Method for monitoring wellbore trajectory in real time while drilling for gas drilling |
| CN106499386A (en) * | 2016-12-16 | 2017-03-15 | 北京科技大学 | A kind of nearly drill bit logging system and method based on coupled communication |
| CN106499386B (en) * | 2016-12-16 | 2019-12-24 | 北京科技大学 | Near-bit well logging system and method based on coupling communication |
| CN106761712A (en) * | 2016-12-28 | 2017-05-31 | 山东大学 | Downhole wireless electromagnetism short pass method and system based on MSK modulation |
| CN106677760A (en) * | 2017-01-04 | 2017-05-17 | 北京赛诺凤凰能源科技有限公司 | Power supply type near-bit geological guiding measuring short section not provided with power source |
| CN107035360A (en) * | 2017-04-28 | 2017-08-11 | 山东鼎盛精工股份有限公司 | Near-bit geo-steering system |
| CN107313771A (en) * | 2017-07-07 | 2017-11-03 | 贝兹维仪器(苏州)有限公司 | A kind of nearly bit measuring instrument with resistivity measurement function |
| CN107313771B (en) * | 2017-07-07 | 2023-09-26 | 贝兹维仪器(苏州)有限公司 | Near-bit measuring instrument with resistivity measuring function |
| CN107339098A (en) * | 2017-07-11 | 2017-11-10 | 北京泰瑞博创科技有限公司 | A kind of measurement while drilling drilling tool and its measurement pipe nipple |
| CN107339098B (en) * | 2017-07-11 | 2024-04-26 | 北京泰瑞博创科技有限公司 | Measurement while drilling tool and measurement nipple thereof |
| CN110513104B (en) * | 2018-05-21 | 2022-01-21 | 中国石油化工股份有限公司 | Combined measurement device for orientation while drilling |
| CN110513104A (en) * | 2018-05-21 | 2019-11-29 | 中国石油化工股份有限公司 | One kind is with brill orientation combination metering device |
| 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 |
| CN108678733A (en) * | 2018-06-22 | 2018-10-19 | 中国电子科技集团公司第二十二研究所 | Nearly drill bit multi-parameter drilling measuring equipment, method and device |
| WO2020211842A1 (en) * | 2019-04-19 | 2020-10-22 | 万晓跃 | Pose monitoring apparatus and method for geosteering system |
| CN110424957A (en) * | 2019-07-31 | 2019-11-08 | 奥瑞拓能源科技股份有限公司 | One kind is with brill electromagnetic wave azimuthal resistivity measuring instrument |
| CN111852444A (en) * | 2020-06-11 | 2020-10-30 | 中国海洋石油集团有限公司 | Lower short section for measurement while drilling near drill bit and measurement while drilling near drill bit measuring device |
| CN111852443A (en) * | 2020-06-11 | 2020-10-30 | 中国海洋石油集团有限公司 | Short section and nearly drill bit measuring device under nearly drill bit measurement |
| CN111852443B (en) * | 2020-06-11 | 2023-08-11 | 中国海洋石油集团有限公司 | Near-bit measuring lower nipple and near-bit measuring device |
| CN111911134A (en) * | 2020-07-10 | 2020-11-10 | 中石化江钻石油机械有限公司 | Near-bit geological guiding system |
| CN112696189A (en) * | 2020-12-16 | 2021-04-23 | 成都多贝石油工程技术有限公司 | Near-bit rapid detection device and method |
| CN113482606A (en) * | 2021-05-14 | 2021-10-08 | 西南石油大学 | Underground signal receiving and transmitting device |
| CN113482606B (en) * | 2021-05-14 | 2023-09-22 | 西南石油大学 | Underground signal receiving and transmitting device |
| CN113719237A (en) * | 2021-08-23 | 2021-11-30 | 中煤科工集团西安研究院有限公司 | Broken soft thin coal seam gas extraction directional long drilling construction drilling tool combination and method |
| CN113719237B (en) * | 2021-08-23 | 2023-10-27 | 中煤科工集团西安研究院有限公司 | Drilling tool assembly and method for directional long drilling construction of gas extraction of crushed soft and thin coal seam |
| CN114033361A (en) * | 2021-10-22 | 2022-02-11 | 中国石油大学(华东) | Near-bit multi-parameter underground measurement and control system while drilling |
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