CN101403297A - Direct-reading type oil well delamination pressure gauge - Google Patents
Direct-reading type oil well delamination pressure gauge Download PDFInfo
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- CN101403297A CN101403297A CNA2008102305600A CN200810230560A CN101403297A CN 101403297 A CN101403297 A CN 101403297A CN A2008102305600 A CNA2008102305600 A CN A2008102305600A CN 200810230560 A CN200810230560 A CN 200810230560A CN 101403297 A CN101403297 A CN 101403297A
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Abstract
The invention discloses a direct-reading oil well layering pressure measurement instrument, comprising a horse tap pup joint used for being connected with a downhole cable and a pressure measurement part connected with the horse tap pup joint, wherein, the pressure measurement part comprises a formation pressure measurement pup joint, the pressure testing part is also provided with a controllable sealing pup joint, a controllable positioning pup joint and a control part used for controlling the actions of sealing and positioning the pup joint, the control part is provided with a telemetry pup joint used for collecting well depth signals, a wireless signal transmitting and receiving device and a position and sealing control device, and the controllable sealing pup joint is provided with a pressure measurement hole communicated with a formation pressure pup joint. The instrument can control the rotation of a motor in an electrical positioning pup joint and an electrical sealing pup joint on the ground, thus realizing the accurate positioning and sealing of a test position, separating the formation pressure from the whole well pressure, and realizing the long term monitoring of the formation pressure; and the obtaining of the layering pressure provides information with higher value for geological departments, which causes that the geological departments can adopt correct and effective measurements to improve the recovery ratio of crude oil.
Description
Technical field
The present invention relates to oil well manometric technique field, especially a kind of direct-reading type oil well delamination pressure gauge.
Background technology
Pressure test is an important content in the oil well well testing work.The method for testing pressure that generally adopts presses test and multiple the pressure to test for flowing at present.Wherein multiple pressure test is to monitor the main means that stratum energy changes, finds the solution formation parameter, judges oil reservoir connection situation.When carrying out the test of multiple pressure, need close oil pumper, crude output there is bigger influence.Ce Shi pressure is full well pressure in addition, it is a general performance of each strata pressure, can't accurately know the pressure recovery situation on a certain stratum, make the using value of test data reduce, can't satisfy the latter period of oilfield development requirement of oil recovery technique that become more meticulous data.
Summary of the invention
The object of the present invention is to provide a kind of topology layout form of oil well pressure measurement instrument, make instrument can not only record the variation of full well pressure, and the variation of formation testing pressure simultaneously, and show the full well pressure in down-hole, temperature curve and strata pressure, temperature curve in real time on ground, producing zone crude output beyond the test layer there is not influence, to overcome the deficiency of present technology.
Technical scheme of the present invention is: a kind of direct-reading type oil well delamination pressure gauge, comprise and be used for the Malong pipe nipple that is connected with the cable of going into the well and the pressure measurement part of connection thereof, described pressure measurement partly comprises strata pressure pressure measurement pipe nipple, also be provided with controlled packoff nipple on the described measuring cell, controlled orientation spool and be used for control sealing, the control section of orientation spool action, described control section comprises the spread of the rumours pipe nipple that is used for the production wells number of deeply convinceing, wireless signal transceiver and location, seal control device, described controlled packoff nipple are provided with the pressure tap that communicates with the pressure nozzle of strata pressure pressure measurement pipe nipple.
Described packoff nipple comprises cylindrical outer casing, slip cap is located at the sliding sleeve on the cylindrical outer casing outer wall in pairs, be installed in the sliding sleeve driving mechanism in the cylindrical outer casing, fixed cover is loaded on the sealing shroud on the cylindrical outer casing outer wall in pairs, described sealing shroud has the elasticity enlarging of bowl-mouth shape, the elasticity enlarging of described sealing shroud and sliding sleeve are oppositely arranged also and leave between the cylindrical outer casing and can insert to strut the gap on its elasticity enlarging lip limit for sliding sleeve, two clutch ends that the direction of motion that described sliding sleeve driving mechanism has paired setting is opposite cooperate with the corresponding transmission of two sliding sleeves of paired setting respectively, and described pressure tap is arranged on the cylindrical outer casing of the packoff nipple between the paired sealing shroud.
The sliding sleeve driving mechanism of described controlled orientation spool comprises motor and transmission mechanism, described sliding sleeve driving mechanism is made of the screw-nut body that motor reaches the clutch end lifting vertically that is connected with drive of motor, described screw-nut body comprises that turn-screw reaches and the transmission nut of the paired setting of its threaded engagement, the thread rotary orientation of two transmission nuts that are provided with is opposite in pairs, described turn-screw is connected with drive of motor by transmission connection piece, two transmission nuts of described paired setting respectively with the corresponding connection of two sliding sleeves of paired setting, offer the axial groove that interts and move vertically for the part that links to each other of transmission nut and sliding sleeve on the described cylindrical outer casing.
Described sealing shroud is a leather cup, and described sliding sleeve is to insert the closing in tapered sleeve that cooperate with the elasticity enlarging of leather cup with the opposite end of leather cup.
Described controlled orientation spool comprises cylindrical case, be installed in the cylindrical case locating detent driving mechanism, pawl body rotate the floating one or more locating detent of putting on the cylindrical case outer wall of the pawl end that is assemblied in the cylindrical case, and the clutch end of described locating detent driving mechanism cooperates with the power intake transmission of the wobbling action of locating detent.
Described locating detent driving mechanism is made of the screw-nut body of motor and motor-driven exportable axial power, described locating detent is provided with and can makes the open spring of locating detent, the clutch end of described screw-nut body can corresponding Contact Transmission with the locating detent tail end cooperate in its axial lifting travel: but pushing tow locating detent tail end reclaims the pawl end of locating detent when the clutch end of screw-nut body rises, pushing tow locating detent tail end no longer when the clutch end of screw-nut body descends, locating detent is opened by spring force; Described screw-nut body is to be made of the transmission nut by screw fit on drive screw that is connected with drive of motor and the drive screw, what described transmission nut was provided with restriction transmission nut rotation only revolves position limiting structure, and the top of transmission nut is provided with the pushing tow termination with locating detent tail end corresponding matching.
The described position limiting structure that only revolves is key, groove fit structure or non-circular shaft, a hole fit structure between transmission nut and cylindrical case.
Described locating detent is provided with in pairs, and described spring is mounted between the relative inner of pawl end of two paired locating detents.
Described pressure measurement part also comprises full well pressure pressure measurement pipe nipple.
Owing to adopted technique scheme, topology layout form of the present invention has following characteristics:
A) can strut locating detent and leather cup in the rotation of the motor in electronic orientation spool of Ground Control and the electronic packoff nipple, realize the accurate location and the sealing of test layer position, isolate strata pressure and full well pressure, realize the long term monitoring of strata pressure;
B) acquisition of zonal pressure value makes that for geology department provides the data that higher-value is arranged geology department can take correctly, effective measures, improves oil recovery factor to greatest extent.
Oil well delamination pressure gauge of the present invention is applicable to the occasion of conventional oil, well pressure test.
Description of drawings
Fig. 1 is the structural representation when work of the present invention;
Fig. 2 is the structural representation of electronic packoff nipple of the present invention;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the structural representation of electronic orientation spool of the present invention.
The specific embodiment
As shown in Figure 1, the present invention includes a Malong pipe nipple 21, magnetic orientation the spread of the rumours pipe nipple 22, electronic orientation spool 23, strata pressure pressure measurement pipe nipple 24, electronic packoff nipple 25 and the full well pressure pressure measurement pipe nipple 26 that is connected with cable 27.
Measuring cell of the present invention in use, discharging cable 27 on ground hangs in measuring cell in the delaminating pressure testing seating nipple 17 of down-hole, wherein a Malong pipe nipple 21, magnetic orientation the spread of the rumours pipe nipple 22 and strata pressure pressure measurement pipe nipple 24, full well pressure pressure measurement pipe nipple 26 adopt prior art, no longer describe in detail herein.Innovation part of the present invention is: the locating detent 38 on the electronic orientation spool 23 of measuring cell and the inwall of leather cup on the electronic packoff nipple 25 7,9 and delaminating pressure testing seating nipple 17 can carry out controlled location and be sealed and matched, thereby can stop at different well depths place and sealing, realize zonal testing the strata pressure of different depth.The barrel of delaminating pressure testing seating nipple 17 is provided with the stratum fluid hole 29 on corresponding different depth stratum, this stratum fluid hole 29 can with pressure tap 15 conductings on electronic packoff nipple 25 outer tube walls of measuring cell.
As Fig. 2, shown in Figure 3, electronic packoff nipple of the present invention, wherein the introducing of strata pressure pressure measurement pipe nipple 24, pressure nozzle 11 and delaminating pressure testing seating nipple 17 is operating principles of electronic packoff nipple of the present invention for convenience of explanation.Electronic packoff nipple of the present invention comprises cylindrical outer casing 14, also comprises motor 1, shaft coupling 2, output shaft 3, power transmission shaft 4, dextrorotation transmission nut 5, sliding sleeve 6,16, leather cup 7,9, drive screw 8, left-handed transmission nut 10, transmission screw 12.Lower end in the cylindrical outer casing 14 is provided with motor 1, the upper end is connected with strata pressure pressure measurement pipe nipple 24, the pressure tap 15 that strata pressure pressure measurement pipe nipple 24 is offered by the pressure nozzle 11 and the middle part of cylindrical outer casing 14 is communicated with, motor 1 is in transmission connection with drive screw 8 by shaft coupling 2, output shaft 3, power transmission shaft 4, on the barrel of cylindrical outer casing 14 in the upper and lower of pressure tap 15 respectively slip cap two sliding sleeves 16,6 are housed, near the corresponding fixed cover of an end of pressure taps 15 leather cup 7,9 is housed in two sliding sleeves 16,6 on the barrel of cylindrical outer casing 14.The opposite end of leather cup 7,9 and sliding sleeve 6,16 is for being respectively the rim of a bowl structure and tapered sleeve structure, leave between leather cup 7,9 and the cylindrical outer casing 14 and can insert to strut the gap on leather cup 7,9 lip limits for sliding sleeve 6,16, the sliding sleeve 6,16 that the lip limit of the bowl mouth end of leather cup 7,9 can be inserted into pushes internally and outwards routs up, thus the gap between radial seal cylindrical outer casing 14 and the delaminating pressure testing seating nipple 17.The transmission screw 12 of sliding sleeve 6 by radially is connected with dextrorotation transmission nut 5, and dextrorotation transmission nut 5 spinnings are on drive screw 8, and the left-handed transmission nut 10 on drive screw 8 is connected by transmission screw and spinning for 6 of sliding sleeves.
The leather cup of electronic packoff nipple is a kind of sealing shroud in the foregoing description, can certainly select other the sealing shroud with elasticity enlarging; It is how right that leather cup in the foregoing description, sliding sleeve also can be provided with on the measuring cell urceolus, and form a plurality of seal sections on the measuring cell urceolus; Sliding sleeve driving mechanism in the foregoing description is made of motor and screw-nut body, is realized driving by the clutch end connection drive sliding sleeve of screw-nut body, and its transmission fit system is the connection transmission.Can certainly replace with other transmission mechanisms by driven by motor, for example gear mechanism, worm-and-wheel gear, linkage, belt mechanism etc. are connected transmission or Contact Transmission with sliding sleeve.
As shown in Figure 4, electronic orientation spool of the present invention comprises cylindrical case 39, motor 31, shaft coupling 32, output shaft 33, drive screw 34, transmission nut 35, spring 36, turning cylinder 37 and locating detent 38.Motor 31 is in transmission connection with drive screw 34 by shaft coupling 32 and output shaft 33, by screw fit transmission nut 35 is arranged on the drive screw 34, the top of transmission nut 35 has pushing tow termination 30, transmission nut 35 only can be in axial lifting moving when described transmission nut 35 was implemented in drive screw 34 and rotates by only revolving position limiting structure, and only revolving position limiting structure can cooperate with key, the groove of cylindrical case 39 inwalls or non-circular shaft, hole cooperation realization by transmission nut 35.The pawl body of two locating detents 38 rotates by turning cylinder 37 and is assemblied in the cylindrical case 39, is top-loaded with spring 36 between the relative inner of the pawl end of two locating detents 38, and spring 36 passes through from the middle part of transmission nut 35.The axial lifting moving stroke corresponding matching of the pushing tow termination 30 of inboard position of the tail end of two locating detents 38 and described transmission nut 35: but pushing tow locating detent 38 tail ends reclaim the pawl end of locating detent when rise in pushing tow termination 30, pushing tow locating detent 38 tail ends no longer when pushing tow termination 30 descends, locating detent 38 is opened by spring force.
The locating detent driving mechanism of electronic orientation spool is made of motor 31 and screw-nut body in the foregoing description, realizes driving the mode Contact Transmission that its transmission cooperates by the clutch end pushing tow locating detent 38 of screw-nut body.Can certainly replace with other transmission mechanisms by driven by motor, for example gear mechanism, worm-and-wheel gear, linkage, belt mechanism etc. are connected transmission or Contact Transmission with locating detent 38.
The present invention is in when work, a Malong pipe nipple 21 stube cables and magnetic orientation the spread of the rumours pipe nipple 22, and cable connector carried out insulated enclosure, realize the positiver sealing of communication signal; The function of magnetic orientation the spread of the rumours pipe nipple 22 is to gather the magnetic orientation depth signal, and downhole testing data coding transmission to Ground Control instrument port, is received the Ground Control instrument and transmits the instruction of getting off, and control corresponding pipe nipple action; The function of electronic orientation spool 23 is to accept the Ground Control instruction that magnetic orientation the spread of the rumours pipe nipple 22 transmits, and strutting and drawing in of control locating detent realizes the accurate location with delaminating pressure testing seating nipple 17 locating slots; The function of strata pressure pressure measurement pipe nipple 24 and full well pressure pressure measurement pipe nipple 26 is to gather and handle pressure, the temperature signal of stratum and full well; The function of electronic packoff nipple 25 is to accept the Ground Control instruction that magnetic orientation the spread of the rumours pipe nipple 22 transmits, and strutting and drawing in of control leather cup realizes the sealing with delaminating pressure testing seating nipple 17 endoporus.
After electronic orientation spool 23 received the Ground Control signal, the axle of motor 31 began to rotate, and by shaft coupling 32 and output shaft 33 rotation is delivered on the drive screw 34.Drive screw 34 is processed with right-handed thread.When drive screw 34 when counterclockwise (overlooking) rotates, drive transmission nut 35 and upwards do rectilinear motion, promote locating detent 38 and inwardly rotate, draw in the diameter range of its shell, make measuring cell can be in laminated distributor under well pressure measurement seating nipple 17 free lifting; When arriving at, measuring cell needs the place, stop place, electronic orientation spool 23 receives the Ground Control signal, drive screw 34 clockwise directions (overlooking) rotate, drive transmission nut 35 and do rectilinear motion downwards, under spring 36 elastic force effects, locating detent 38 outwards struts maximum, can snap in after locating detent 38 struts on laminated distributor under well pressure measurement seating nipple 17 inwalls in the default annular positioning groove, locating detent 38 and annular positioning groove mutually button spacing cooperate realize under the axial location of well tool and laminated distributor under well pressure measurement seating nipple 17.
After the electronic packoff nipple of measuring cell received the Ground Control signal, the axle of motor 1 began to rotate, and by shaft coupling 2, output shaft 3 and power transmission shaft 4 rotation is delivered on the drive screw 8.Drive screw 8 lower ends processing right-handed thread, upper end processing left hand thread.When drive screw 8 (overlooking) rotation counterclockwise, drive dextrorotation transmission nut 5 and left-handed transmission nut 10 and do rectilinear motion to the measuring cell middle part, drive sliding sleeve 6,16 by the transmission screw and also do rectilinear motion to the measuring cell middle part, thereby the rim of a bowl lip limit of extruding leather cup 7,9 is outwards routed up, form the interference sealing with the endoporus of delaminating pressure testing seating nipple 17, thereby realized the sealing of strata pressure.Strata pressure is incorporated on the strata pressure pressure measurement pipe nipple 24 by the pressure tap 15 of pressure nozzle 11, has realized the test of strata pressure.When motor 1 drives drive screw 8 clockwise directions (overlooking) rotation, drive dextrorotation transmission nut 5 and left-handed transmission nut 10 and do rectilinear motion to the measuring cell outer end, drive sliding sleeve 6,16 by the transmission screw and also do rectilinear motion outward, the rim of a bowl lip limit of leather cup 7,9 is under elastic reaction, draw in the maximum gauge scope of measuring cell, make measuring cell and delaminating pressure testing seating nipple 17 deblockings.
Claims (9)
1, a kind of direct-reading type oil well delamination pressure gauge, comprise and be used for the Malong pipe nipple that is connected with the cable of going into the well and the pressure measurement part of connection thereof, described pressure measurement partly comprises strata pressure pressure measurement pipe nipple, it is characterized in that: also be provided with controlled packoff nipple on the described measuring cell, controlled orientation spool and be used for control sealing, the control section of orientation spool action, described control section comprises the spread of the rumours pipe nipple that is used for the production wells number of deeply convinceing, wireless signal transceiver and location, seal control device, described controlled packoff nipple are provided with the pressure tap that communicates with the pressure nozzle of strata pressure pressure measurement pipe nipple.
2, measuring cell according to claim 1, it is characterized in that: described packoff nipple comprises cylindrical outer casing, slip cap is located at the sliding sleeve on the cylindrical outer casing outer wall in pairs, be installed in the sliding sleeve driving mechanism in the cylindrical outer casing, fixed cover is loaded on the sealing shroud on the cylindrical outer casing outer wall in pairs, described sealing shroud has the elasticity enlarging of bowl-mouth shape, the elasticity enlarging of described sealing shroud and sliding sleeve are oppositely arranged also and leave between the cylindrical outer casing and can insert to strut the gap on its elasticity enlarging lip limit for sliding sleeve, two clutch ends that the direction of motion that described sliding sleeve driving mechanism has paired setting is opposite, cooperate with the corresponding transmission of two sliding sleeves of paired setting respectively, described pressure tap is arranged on the cylindrical outer casing of the packoff nipple between the paired sealing shroud.
3, measuring cell according to claim 2, it is characterized in that: described sliding sleeve driving mechanism is made of the screw-nut body that motor reaches the clutch end lifting vertically that is connected with drive of motor, described screw-nut body comprises that turn-screw reaches and the transmission nut of the paired setting of its threaded engagement, the thread rotary orientation of two transmission nuts that are provided with is opposite in pairs, described turn-screw is connected with drive of motor by transmission connection piece, two transmission nuts of described paired setting respectively with the corresponding connection of two sliding sleeves of paired setting, offer the axial groove that interts and move vertically for the part that links to each other of transmission nut and sliding sleeve on the described cylindrical outer casing.
4, measuring cell according to claim 3 is characterized in that: described sealing shroud is a leather cup, and described sliding sleeve is to insert the closing in tapered sleeve that cooperate with the elasticity enlarging of leather cup with the opposite end of leather cup.
5, according to any described measuring cell in the claim 1～4, it is characterized in that: locating detent driving mechanism, pawl body that described controlled orientation spool comprises cylindrical case, be installed in the cylindrical case rotate the floating one or more locating detent of putting on the cylindrical case outer wall of the pawl end that is assemblied in the cylindrical case, and the clutch end of described locating detent driving mechanism cooperates with the power intake transmission of the wobbling action of locating detent.
6, measuring cell according to claim 5, it is characterized in that: described locating detent driving mechanism is made of the screw-nut body of motor and motor-driven exportable axial power, described locating detent is provided with and can makes the open spring of locating detent, the clutch end of described screw-nut body can corresponding Contact Transmission with the locating detent tail end cooperate in its axial lifting travel, its matching relationship is: but pushing tow locating detent tail end reclaims the pawl end of locating detent when the clutch end of screw-nut body rises, pushing tow locating detent tail end no longer when the clutch end of screw-nut body descends, locating detent is opened by spring force; Described screw-nut body is to be made of the transmission nut by screw fit on drive screw that is connected with drive of motor and the drive screw, what described transmission nut was provided with restriction transmission nut rotation only revolves position limiting structure, and the top of transmission nut is provided with the pushing tow termination with locating detent tail end corresponding matching.
7, measuring cell according to claim 6 is characterized in that: the described position limiting structure that only revolves is key, groove fit structure or non-circular shaft, a hole fit structure between transmission nut and cylindrical case.
8, measuring cell according to claim 7 is characterized in that: described locating detent is provided with in pairs, and described spring is mounted between the relative inner of pawl end of two paired locating detents.
9, measuring cell according to claim 1 is characterized in that: described pressure measurement part also comprises full well pressure pressure measurement pipe nipple.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102305600A CN101403297B (en) | 2008-10-23 | 2008-10-23 | Direct-reading type oil well delamination pressure gauge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102305600A CN101403297B (en) | 2008-10-23 | 2008-10-23 | Direct-reading type oil well delamination pressure gauge |
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| CN101403297A true CN101403297A (en) | 2009-04-08 |
| CN101403297B CN101403297B (en) | 2012-11-14 |
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| CN102996115A (en) * | 2012-11-28 | 2013-03-27 | 西安思坦仪器股份有限公司 | Direct-reading examining seal instrument suitable for eccentric water distributor |
| CN103147742A (en) * | 2013-02-04 | 2013-06-12 | 西安思坦仪器股份有限公司 | Direct-reading type seal checking instrument suitable for concentric adjustable water distributor |
| CN101701519B (en) * | 2009-10-28 | 2013-07-24 | 南京航空航天大学 | Deep well unpowered data transmission device |
| CN103244098A (en) * | 2013-04-02 | 2013-08-14 | 中国石油天然气股份有限公司 | Low-injection-allocation-quantity water injection well layered flow tester |
| CN105089619A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Electric seal testing method and electric seal testing instrument for bridge type concentric separate injection pipe column |
| CN105672960A (en) * | 2016-03-25 | 2016-06-15 | 贵州天石能源科技有限公司 | Direct-reading underground layered oil production method and direct-reading underground layered oil production device |
| CN109356541A (en) * | 2018-12-11 | 2019-02-19 | 陕西华晨石油科技有限公司 | Electronic dispensing pipe nipple and put-on method |
| CN110863796A (en) * | 2019-12-11 | 2020-03-06 | 贵州航天凯山石油仪器有限公司 | Electric pressure relief method and device for sealing section |
| CN110886603A (en) * | 2018-09-07 | 2020-03-17 | 中国石油化工股份有限公司 | Intelligent five-parameter seal checking instrument for separate injection well |
| CN114856548A (en) * | 2022-05-20 | 2022-08-05 | 西南石油大学 | Chemical flooding pressure-dividing well layering pressure measuring device |
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| US4830107A (en) * | 1988-06-13 | 1989-05-16 | Otis Engineering Corporation | Well test tool |
| CN2435514Y (en) * | 2000-03-24 | 2001-06-20 | 大庆油田有限责任公司采油工艺研究所 | Water well layered pressure measuring device |
| CN2802074Y (en) * | 2005-06-09 | 2006-08-02 | 杨红 | Multi-force actuation packer |
| CN201037417Y (en) * | 2007-05-21 | 2008-03-19 | 中国石油化工股份有限公司 | Bridge type delamination measuring and sealing structure |
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| CN101701519B (en) * | 2009-10-28 | 2013-07-24 | 南京航空航天大学 | Deep well unpowered data transmission device |
| CN102996115B (en) * | 2012-11-28 | 2015-07-15 | 西安思坦仪器股份有限公司 | Direct-reading examining seal instrument suitable for eccentric water distributor |
| CN102996115A (en) * | 2012-11-28 | 2013-03-27 | 西安思坦仪器股份有限公司 | Direct-reading examining seal instrument suitable for eccentric water distributor |
| CN103147742A (en) * | 2013-02-04 | 2013-06-12 | 西安思坦仪器股份有限公司 | Direct-reading type seal checking instrument suitable for concentric adjustable water distributor |
| CN103244098B (en) * | 2013-04-02 | 2016-01-13 | 中国石油天然气股份有限公司 | Low-injection-allocation-quantity water injection well layered flow tester |
| CN103244098A (en) * | 2013-04-02 | 2013-08-14 | 中国石油天然气股份有限公司 | Low-injection-allocation-quantity water injection well layered flow tester |
| CN105089619A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Electric seal testing method and electric seal testing instrument for bridge type concentric separate injection pipe column |
| CN105672960A (en) * | 2016-03-25 | 2016-06-15 | 贵州天石能源科技有限公司 | Direct-reading underground layered oil production method and direct-reading underground layered oil production device |
| CN105672960B (en) * | 2016-03-25 | 2017-12-26 | 贵州天石能源科技有限公司 | A kind of direct-reading type down-hole oil production by layer method and its device |
| CN110886603A (en) * | 2018-09-07 | 2020-03-17 | 中国石油化工股份有限公司 | Intelligent five-parameter seal checking instrument for separate injection well |
| CN110886603B (en) * | 2018-09-07 | 2023-08-04 | 中国石油化工股份有限公司 | Five-parameter intelligent seal inspection instrument for separate injection well |
| CN109356541A (en) * | 2018-12-11 | 2019-02-19 | 陕西华晨石油科技有限公司 | Electronic dispensing pipe nipple and put-on method |
| CN110863796A (en) * | 2019-12-11 | 2020-03-06 | 贵州航天凯山石油仪器有限公司 | Electric pressure relief method and device for sealing section |
| CN110863796B (en) * | 2019-12-11 | 2023-11-07 | 贵州航天凯山石油仪器有限公司 | Electric pressure relief method and device for sealing section |
| CN114856548A (en) * | 2022-05-20 | 2022-08-05 | 西南石油大学 | Chemical flooding pressure-dividing well layering pressure measuring device |
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