CN108756779A - Concentric tube under across returning perforation, test, drain, modernization system and operating method - Google Patents
Concentric tube under across returning perforation, test, drain, modernization system and operating method Download PDFInfo
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- CN108756779A CN108756779A CN201810543103.0A CN201810543103A CN108756779A CN 108756779 A CN108756779 A CN 108756779A CN 201810543103 A CN201810543103 A CN 201810543103A CN 108756779 A CN108756779 A CN 108756779A
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Abstract
The present invention relates to a kind of concentric tubes in petroleum exploration and development Oil Test Technology field across returning perforation, test, drain, modernization system and operating method under, including drain test subsystems, concentric tube be across every subsystem and perforation subsystem, wherein：Drain test subsystems include pumping equipment, school depth pipe nipple, circulating valve, test combination tool；Concentric tube is across including pressure-transmitting joint, support type packer, manometer, spacer tube, safety joint, transit joint, anchor packer, screen joint and concentric tube assembly every subsystem, and pressure-transmitting joint is located above support type packer；Perforation subsystem is located at the lower section of two-stage packer, including：Regulation pipe, damper, igniter head, perforating gun, pressure releasing device.Using the operating method of the system, one-trip string is only needed, can first insulate the layers apart of having penetrated above layer to be tried, then treats examination layer and carries out perforation, test, drain, transformation operation, construction safety is reliable, realizes formation testing and puies forward effect, has saved formation testing cost.
Description
The application be application No. is：2014106497681, invention and created name is：Concentric tube under across returning perforation, test, row
Liquid, modernization system and operating method, the applying date be：The divisional application of the application for a patent for invention on November 17th, 2014.
One, technical field
The present invention relates to petroleum exploration and development Oil Test Technology field, more particularly to a kind of concentric tube across returned under perforation, survey
Examination, drain, modernization system and operating method.
Two, background technology
At present in twin packer across in terms of perforation, testing combination operation, the Oil Test Technology being closer to the present invention has " across under
Return perforation, test and drain integrated formation tubing string ", " oil/gas well is across every combined operation of perforation and testing operating tool string device " technology.
" across returning perforation, test and drain integrated formation tubing string under " (number of patent application ZL 200520106208.8)
It is by orientation spool, sliding sleeve hydraulic pump, support rubber bowl, ball seat, monitoring manometer, downhole testing valve, hydraulic locking, support
Formula packer, pipe external monitor manometer, transmitting pressure tool, slip-type packer, screen joint, subtracts test pressure meter support cylinder
Shake device, hydraulic delay igniter, igniter head, the body of a gun, pressure releasing device are sequentially connected composition formation testing tubing string.Wherein key technology includes：
First, transmitting pressure tool is between two-stage packer, and positioned at the top of slip-type packer, interior pressure tube passes through slip-type
Packer and screen joint close fit, it is therefore an objective to so that the liquid between two packers is connected to hydraulic delay igniter, it will
It penetrates in the pressure transmission to igniter head of layers apart A；Second is that the difference using fluid cushion pressure in the pressure and test string for having penetrated layers apart A is made
For power, hits igniter head and ignite perforating gun.
Its deficiency is：
(1) power of the difference as perforation of fluid cushion pressure in the pressure for having penetrated layers apart A and test string is fully relied on, is occurred
Accidentally the risk of the major accidents such as perforation is too big.It is well known that in going down process, occur to have when midway sets, opens by mistake the event of well
Occur.Once open by mistake well, while test pressure differential reaches the excitation pressure difference of igniter head again, which easilys lead to accidentally perforation
Pernicious consequence.
(2) due to can not by from ground to annular space apply safe working pressure, if test string leaks when lower brill
It loses, then fluid cushion pressure is necessarily higher than expection in test string, it is easy to cause to have penetrated fluid cushion in the pressure and test string of layers apart A
The difference of pressure is not achieved the excitation pressure difference of pre-set igniter head, and can not remedy, will cause this time tubing string forever less than expection
It far from perforation, is difficult to judge in face of downhole perforation success or not in addition, if subsequent process is further continued for implementing, will cause big
Invalid working hour is measured, a large amount of equipment, material, personnel and money are wasted.
(3) tubing string contains hydraulic locking and ball seat, first, latus rectum is small in hydraulic locking, second is that in flowing back by hydraulic pump
It needs pitching, open sliding sleeve, only allow one-way flow after having ball on ball seat.Above-mentioned factor causes tubing string not have Large Scale Acidizing, water
The reservoir reconstructions function such as power sand fracturing.In addition, the tubing string draining mode is only limitted to flowing back by hydraulic pump, and flowing back by hydraulic pump can only
Part hole condition and condition are adapted to, drain selection has some limitations.
" oil/gas well is across every combined operation of perforation and testing operating tool string device " (number of patent application ZL 97229886.X) tubing string is
The tubular column structure for using two-stage packer, being clipped in perforating gun between two-stage packer first insulates purpose using one-trip string
Layers apart has been penetrated in layer lower section, then carries out perforation and testing combination operation to target zone again, be mainly used on return formation testing.
Its deficiency is：
(1) well section being directed between two-stage packer carries out perforation, test, once formation sand production, tubing string, which is easy to happen, to be buried
Card, it is also difficult to realize the reservoir reconstructions institutional operation such as Large Scale Acidizing or waterpower sand fracturing.
(2) perforating gun be easy to cause tubing string between two-stage packer since the impact of perforation instantaneous pressure involves to tremble
And testing meter and instrument failure, especially in high temperature high pressure deep well operation, risk is larger.
(3) it can only carry out returning formation testing from the bottom up, can not achieve down and return formation testing.
Three, invention content
The purpose of the present invention is to provide a kind of concentric tubes across returning perforation, test, drain, modernization system and operation side under
Method overcomes the deficiency of the above-mentioned prior art, using one-trip string, first insulates and has penetrated layers apart, then waits for having penetrated below layers apart
Try layer carry out perforation, test, drain, transformation operation, construction safety is reliable, realizes formation testing and puies forward effect, saved formation testing at
This.
The invention is realized in this way：
A kind of concentric tube under across returning perforation, test, drain, modernization system, including the drain test concatenated from top to bottom
Subsystem, concentric tube across every subsystem and perforation subsystem, forming formation testing tubing string in underground together with oil well pipe, wherein：
The drain test subsystems, including pumping equipment, school depth pipe nipple, circulating valve, test combination tool, it is described
Pumping equipment is located at the top of test combination tool；
The concentric tube is across every subsystem, including pressure-transmitting joint, support type packer, manometer, spacer tube, peace
Full connector, transit joint, anchor packer, screen joint and concentric tube assembly；The pressure-transmitting joint is located at brace type packing
The top of device；The manometer, spacer tube, safety joint, transit joint are located at support type packer and slips packing
Between device；The anchor packer is located at the lower section of support type packer, and screen joint is located at the lower section of anchor packer；Institute
Pressure-transmitting joint, support type packer, manometer, spacer tube, safety joint, transit joint, anchor packer and the sieve stated
The axial centre of pipe fitting is both provided with concentric tube assembly；
The perforation subsystem, including regulation pipe, damper, igniter head, perforating gun, pressure releasing device.Perforation
System is located at the lower section of anchor packer and screen joint；Described igniter head can be conventionally known liquid column hydrostatic pressure formula point
Duration and degree of heating can also be conventionally known test pressure differential formula igniter head；The regulation pipe is the oil well pipe with endoporus.
Further, pumping equipment may be used in the draining modes such as suction, hydraulic pump, screw pump, gaslift, oil well pump
One or more combination units, to improve drain efficiency and success rate.It is deeply short with school according to the difference of pumping equipment type
Section may be different in the position relationship of tubing string.Such as：The best position of pumping equipment of the types such as screw pump, gaslift, oil well pump
In the top of school depth pipe nipple, and the pumping equipment of the types such as hydraulic pump is used to be preferably located at the lower section of school depth pipe nipple, aspirated then not
It needs that individual pumping equipment is arranged；Circulation canal is provided when kill-job after circulating valve is used to test, it can also be with drain
Device is integrated (such as hydraulic jet pump).
Further, test combination tool can be the full-bore tool combinations based on pressure-controlled test valve, so as to
The multi-functional advantage such as reservoir reconstruction can be realized and improve the safety of well control by playing tubing string, can also select multithread test valve
Etc. cheap type tool combinations based on types, be mainly used for being not intended to implement reservoir reconstruction and do not have high pressure high yield feature
Oil/gas well；It can also includes other kits such as test pressure meter carrier or hydraulic anchor to test combination tool, make tubing string
Realize more functions.
Further, concentric tube is preferably located at across the manometer every subsystem in the top of spacer tube, pressure gauge support
The pressure gauge that cylinder is hung includes at least the pressure gauge of an outer pressure transmission, for monitoring pressure and temperature between two-stage packer
Variation, can also resuspend the pressure gauge (pressure and temperature change for enrolling layer to be tried) of one or more interior pressure transmitting type.
Further, the concentric tube assembly includes one or more groups of concentric tubes, and every group of concentric tube can be one same
Heart pipe is single, can also be to be formed by connecting by concentric tube box cupling and sealing ring by multiple concentric tubes are single；Every group of concentric tube is extremely
Rare one end is fixed to concentric tube across on some component every subsystem by modes such as screw thread or welding, and each concentric tube is single
For a hollow tubular body.
Further, the radial pressure transmission hole of the pressure-transmitting joint and each concentric tube assembly, regulation pipe, the axis of damper are inside
Hole is connected to, and forms applied pressure by annulus channel.The pressure of annular space above support type packer, from the pressure transmission hole of pressure-transmitting joint into
Enter, then by above-mentioned applied pressure by annulus channel, be eventually transferred on igniter head, and then ignites perforating gun.
Further, the concentric tube assembly and screen joint, anchor packer, transit joint, safety joint, interval
Pipe, manometer, support type packer, pressure-transmitting joint endoporus between annular space connection, above-mentioned annular space with sieve
The radial flow path of pipe fitting, the pass production channel of section components together, form the production channel below test combination tool, should
Produce channel and above-mentioned applied pressure by annulus channel separation.Fluid outside screen joint flows through the life below test combination tool
Is produced from channel, into test combination tool and its top tubing string, reaches ground.
Concentric tube includes across the effect every subsystem：
First, closing the sixth of the twelve Earthly Branches penetrates layers apart.It includes support type packer, manometer, spacer tube, safety joint, transition
Connector, anchor packer composition are isolated with layer to be tried across every module, making to have penetrated layers apart, and the fluid channel for having penetrated layers apart and survey are also made
Try combination tool below production channel, applied pressure by annulus channel formed isolation, penetrated layers apart fluid and pressure it is completely isolated
Outside formation testing tubing string.
Second is that foring applied pressure by annulus channel, makes the pressure of the annular space above support type packer, be transmitted to igniter head
On.
Third, foring the production channel below test combination tool, the fluid of layer to be tried is enable to reach test combination work
Tool and top.
The present invention also adopts the following technical scheme that：
The concentric tube across returned under perforation, test, drain, modernization system operating method, it is characterised in that press
State step progress：
Layers apart has been penetrated in first step packing：By above-mentioned concentric tube across returning perforation, test, drain, modernization system and oil well under
G.I.H after pipe connection composition formation testing tubing string, under tubing string in place after, first school is deep, adjustment tubing string depth, then rotates tubing string, decentralization
Tubing string applies on tubing string ballast to packer, sets two-stage packer；Formation testing tubing string will penetrate layers apart isolation, while by pit shaft ring
The empty annular space insulated between combination wall and anchor packer upper annulus, two packers, anchor packer lower part annular space three parts；
Second step perforation：By way of applying safe pressure to annular space from ground, igniter head is ignited, and then ignites and penetrates
Hole bullet completes perforation；
Third pacing tries：According to the test job system formulated in detail design, according to the test entrained by formation testing tubing string
Type, feature and the operation of combination tool require to carry out opening or closing operation, implement underground switch well, sampling；
Production is asked in 4th step drain：After test, when test drives a well, the stratum production liquid liquid measure acquired in period is less, is difficult to
When determining the true fluidity and production capacity on stratum, when thinking to need further drain after evaluation really, then designed according to drain
The working system of formulation carries out drain and production is asked to construct；Such as think that being not required to drain asks production, can skip this step, into next step；
5th step reservoir reconstruction：After production is asked in drain, if by evaluating test early period, drain and asking production as a result, thinking
When needing further to carry out reservoir reconstruction, then construction is transformed and (contains improved drain) according to reservoir reconstruction design requirement；
Such as think not needing reservoir reconstruction, then skip this step, into next step；
6th step lift pipe string：After the formation testing for treating examination layer, carry out kill-job, deblocking, lift pipe string (depending on actual conditions,
It can first unseal, lift pipe string, see liquid level well-flushing again, play remaining tubing string).
The invention has the advantages that：
(1) use one-trip string can it is economical, conveniently, efficiently, reliable complete across every having penetrated layers apart, and to having penetrated layers apart
The layer to be tried of lower section carries out perforation, test, drain, reservoir reconstruction institutional operation, reduces and beats bridge plug (or cement plug) sealing
And bore plug number, decreased lower tubular column and kill-job number, shortened production rig holding time, saved formation testing at
This, achievees the purpose that formation testing puies forward effect.
(2) by way of applying safe pressure to annular space from ground, igniter head is ignited, and then ignites perforating bullet, it is complete
At perforation.Even if opening by mistake well in going down process, accidentally perforation will not be caused, will not be occurred because above test combination tool
Tubing string leakage, pressure difference not enough perforation is caused to fail, substantially increase safety, the reliability of perforation.
(3) pumping equipment can be one kind or more in the draining modes such as suction, hydraulic pump, screw pump, gaslift, oil well pump
Kind device combination, expands drain accommodation, improves drain efficiency and success rate.
(4) can be achieved with the reservoir reconstructions process such as Large Scale Acidizing or waterpower sand fracturing connection make and under return formation testing, overcome
The well section that existing " oil/gas well is across every combined operation of perforation and testing operating tool string device " can only be directed between two packers be penetrated
The deficiency of card is easily buried in hole, formation testing.
(5) perforating gun is located at the lower section of anchor packer, helps to reduce the impact of perforation instantaneous pressure and involves to tremble and cause
Tubing string and the risk of testing meter and instrument failure.
Four, it illustrates
Fig. 1 be in the present invention concentric tube across returning perforation, test, drain, the typical operating tool string structure of modernization system under
Figure；
Fig. 2 be in the embodiment of the present invention concentric tube across the assembling figure every assembly 101a；
Fig. 3 is concentric tube across the sectional view A-A every assembly 101a；
Fig. 4 is the sectional view D-D of concentric spacing pipe unit 101b；
Fig. 5 is the sectional view C-C of concentric spacing pipe unit 101b；
Fig. 6 is the B-B revolved sectional views of single group concentric spacing pipe unit 101b assembling figures in the embodiment of the present invention；
Fig. 7 is concentric tube across every assembly 101c sectional views E-E；
Fig. 8 is concentric tube across every assembly 101c sectional views G-G；
Fig. 9 be in the embodiment of the present invention concentric tube across the F-F revolved sectional views every assembly 101c assembling figures.
Five, specific implementation mode
To enable the purpose of the present invention, technological means and technique effect have more complete and clearly disclosing, carry out below detailed
Illustrate, and also referring to attached drawing and part numbers.
Refering to fig. 1, concentric tube under across returning perforation, test, drain, modernization system, including the drain concatenated from top to bottom
Test subsystems 100, concentric tube form underground formation testing pipe together across every subsystem 101 and perforation subsystem 102 with oil well pipe 1
Column, wherein：
Drain test subsystems 100, including pass through the pumping equipment 2 of threaded connection, school depth pipe nipple 3, cycle
Valve 4, test combination tool 5；
Concentric tube across every subsystem 101, including pressure-transmitting joint 6, support type packer 7, manometer 9, spacer tube 10,
Safety joint 11, transit joint 12, anchor packer 13, screen joint 14 and concentric tube assembly 8；Wherein each component is according to following
Mode connect：
Referring to Fig.2, tube assembly 8 is assembled into concentric tube with pressure-transmitting joint 6, support type packer 7, manometer 9 with one heart
Across every assembly 101a；Refering to Fig. 6, concentric tube assembly 8 is assembled into single group concentric spacing pipe unit 101b, root with spacer tube outer barrel 35
One or more single group concentric spacing pipe unit 101b can be matched according to the length of span；Refering to Fig. 9, concentric tube assembly 8 and safety
Connector 11, transit joint 12, anchor packer 13, screen joint 14 are assembled into concentric tube across every assembly 101c.Above-mentioned concentric tube
Across every assembly 101a, one or more single group concentric spacing pipe unit 101b (the wherein one single group concentric spacing Guan Dan in bottom
First 101b need to shed pin and box sub 40, supporting positive cover 41, snap ring 42 and the sealing ring 39 of its lower end), concentric tube is across every assembly 101c
From top to bottom successively by threaded connection (every group of concentric tube across every in assembly or concentric spacing pipe unit the single lower end of concentric tube and
Its sealing ring is inserted into the nearest concentric tube seal area 106 in lower section) concentric tube is formed across every subsystem 101；
Perforation subsystem 102, including pass through the regulation pipe 15 of threaded connection, damper 16, igniter head 17, penetrate
Hole rifle 18, pressure releasing device 19.
Referring again to Fig. 2, Fig. 3, radial pressure transmission hole 104 and pass production channel 1031, pressure transmission are provided on pressure-transmitting joint 6
Filtering plug 20 with holes is housed in hole 104；One concentric tube single 23 constitutes one group of concentric tube assembly 8, on this group of concentric tube
End is equipped with sealing ring 22, is threadedly attached in the axial internal thread hole of 6 lower end of pressure-transmitting joint；Spiral shell outside 6 lower end of pressure-transmitting joint
Line is connect with the upper end of support type packer 7, and support type packer 7, manometer 9 and pin and box sub 25 pass sequentially through screw thread
Connection has supporting positive cover 26, snap ring 27, said modules and sealing ring 21,24,28 between concentric tube single 23 and pin and box sub 25
Concentric tube is together constituted across every assembly 101a；
Referring again to Fig. 4, Fig. 5, Fig. 6, double pin ends 31 have the pass production channel 1031 being axially distributed and concentric tube close
Seal area 106；Concentric tube is single 34, concentric tube box cupling 36, concentric tube single 38 constitute one group of concentric tube assembly with sealing ring 37
8, there be sealing ring 33 the concentric tube assembly upper end of the group, is threadedly attached in the axial internal thread hole of double 31 lower ends of pin end
In；Double pin ends 31, spacer tube outer barrel 35 and pin and box sub 40 pass sequentially through threaded connection, are connect in concentric tube single 38 and male and female
There are supporting positive cover 41, snap ring 42, said modules to together constitute a single group in the heart with sealing ring 30,32,39,43 between first 40
Pipe unit 101b；
Referring again to Fig. 7, Fig. 8, Fig. 9, becoming in buckle joint 46 has the supporting positive cover 44 of welding, transit joint 12 to have axial distribution
Pass production channel 1031 and concentric tube seal area 106；Concentric tube single 50 constitutes one group of concentric tube assembly 8, and the group is same
There is sealing ring 49 heart pipe upper end, is threadedly attached in the lower end axial direction internal thread hole of transit joint 12；Screen joint 14
There is radial flow path 107 in outside；Become buckle joint 46, safety joint 11, transit joint 12, anchor packer 13, screen joint 14 according to
Secondary be connected through a screw thread (becomes single 47 lower end of concentric tube above buckle joint 46 and its sealing ring 43 across supporting positive cover 44, is inserted into
To in the concentric tube seal area 106 of transit joint 12), said modules together constitute concentric tube with sealing ring 45,48,51,52
Across every assembly 101c；
Referring again to Fig. 1~9, after the completion of tubing string connection, the pressure transmission hole 104 of the pressure-transmitting joint 6 and each concentric tube assembly 8
Endoporus connection, the pressure of annular space above support type packer 7 enters from the pressure transmission hole 104 of pressure-transmitting joint 6, then passes through
Each tube assembly 8, the axial bore of regulation pipe 17, damper 16 with one heart, form applied pressure by annulus channel 105.After tubing string is set,
By applying safe pressure from ground to annular space, the liquid column hydrostatic pressure of annular space is added with safe pressure, passes through applied pressure by annulus channel
It is applied on igniter head 17, and then ignites perforating gun.Fluid outside screen joint 14 passes through the diameter on 14 tube wall of screen joint
To runner 107, concentric tube assembly 8 and anchor packer 13, transit joint 12, safety joint 11, interval are sequentially passed through from below
Annular space or pass between pipe 10, manometer 9, support type packer 7, pressure-transmitting joint 6 produce channel 1031, enter
To test combination tool 5, the production channel 103 of 5 lower section of test combination tool is formed.
The present invention also provides concentric tube across returned under perforation, test, drain, modernization system operating method, by following
Step carries out：
Layers apart has been penetrated in first step packing：By above-mentioned concentric tube across returning perforation, test, drain, modernization system and oil well under
G.I.H after pipe connection composition formation testing tubing string, under tubing string in place after, first school is deep, adjustment tubing string depth, then rotates tubing string, decentralization
Tubing string applies on tubing string ballast to packer, sets two-stage packer；Formation testing tubing string will penetrate layers apart isolation, while by pit shaft ring
The empty annular space insulated between combination wall and anchor packer upper annulus, two packers, anchor packer lower part annular space three parts；
Second step perforation：By way of applying safe pressure to annular space from ground, igniter head is ignited, and then ignites and penetrates
Hole bullet completes perforation；
Third pacing tries：According to the test job system formulated in detail design, according to the test entrained by formation testing tubing string
Type, feature and the operation of combination tool require to carry out opening or closing operation, implement underground switch well, sampling；
Production is asked in 4th step drain：After test, when test drives a well, the stratum production liquid liquid measure acquired in period is less, is difficult to
When determining the true fluidity and production capacity on stratum, when thinking to need further drain after evaluation really, then designed according to drain
The working system of formulation carries out drain and production is asked to construct；Such as think that being not required to drain asks production, can skip this step, into next step；
5th step reservoir reconstruction：After production is asked in drain, if by evaluating test early period, drain and asking production as a result, thinking
When needing further to carry out reservoir reconstruction, then construction is transformed and (contains improved drain) according to reservoir reconstruction design requirement；
Such as think not needing reservoir reconstruction, then skip this step, into next step；
6th step lift pipe string：After the formation testing for treating examination layer, carry out kill-job, deblocking, lift pipe string (depending on actual conditions,
It can first unseal, lift pipe string, see liquid level well-flushing again, play remaining tubing string).
In aforesaid operations method, the best 3~10MPa of safe pressure that applies to annular space when perforation.
Using concentric tube across returned under perforation, test, drain, modernization system operating method can be first using one-trip string
The layers apart of having penetrated above layer to be tried is insulated, then treats examination layer and carries out perforation, test, drain, transformation operation, construction safety is reliable,
It realizes formation testing and puies forward effect, saved formation testing cost.
Provided above is only the schematical section Example of the present invention, is not used to limit the scope of the present invention, Ren Heben
The technical staff in field, made equivalent variations and modification under the premise of not departing from design and the principle of the present invention, should all
It is included within the scope of this patent.
Claims (1)
1. a kind of concentric tube under across returning perforation, test, drain, modernization system, it is characterised in that including what is concatenated from top to bottom
Drain test subsystems, concentric tube form underground formation testing tubing string across every subsystem and the perforation subsystem together with oil well pipe,
Wherein：
The drain test subsystems, including pumping equipment, school depth pipe nipple, circulating valve, test combination tool, the drain
Device is located at the top of test combination tool；
The concentric tube connects across every subsystem, including pressure-transmitting joint, support type packer, manometer, spacer tube, safety
Head, transit joint, anchor packer, screen joint and concentric tube assembly；The pressure-transmitting joint is located at support type packer
Top；The manometer, spacer tube, safety joint, transit joint be located at support type packer and anchor packer it
Between；The anchor packer is located at the lower section of support type packer, and screen joint is located at the lower section of anchor packer；Described
Pressure-transmitting joint, support type packer, manometer, spacer tube, safety joint, transit joint, anchor packer and screen casing connect
The axial centre of head is both provided with concentric tube assembly；
The perforation subsystem, including regulation pipe, damper, igniter head, perforating gun, pressure releasing device；The perforation subsystem
Positioned at anchor packer and the lower section of screen joint；Described igniter head is liquid column hydrostatic pressure formula igniter head either test pressure differential
Formula igniter head；The regulation pipe is the oil well pipe with endoporus；
At least one radial pressure transmission hole of the pressure-transmitting joint, the pressure transmission hole and concentric tube assembly, regulation pipe, damper
Axial bore is connected to, composition applied pressure by annulus channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810543103.0A CN108756779B (en) | 2014-11-17 | 2014-11-17 | Concentric tube under across returning perforation, test, drain, modernization system and operating method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810543103.0A CN108756779B (en) | 2014-11-17 | 2014-11-17 | Concentric tube under across returning perforation, test, drain, modernization system and operating method |
| CN201410649768.1A CN105587274B (en) | 2014-11-17 | 2014-11-17 | Concentric tube under across returning perforation, test, drain, modernization system and operating method |
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| CN201810543108.3A Expired - Fee Related CN108843257B (en) | 2014-11-17 | 2014-11-17 | Concentric tube under across returning perforation, test, drain, modernization system and operating method |
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| CN201810543108.3A Expired - Fee Related CN108843257B (en) | 2014-11-17 | 2014-11-17 | Concentric tube under across returning perforation, test, drain, modernization system and operating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111911144A (en) * | 2020-08-13 | 2020-11-10 | 中国石油化工股份有限公司 | Double-seal straddle test pipe column |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108071387A (en) * | 2016-11-10 | 2018-05-25 | 中国石油天然气股份有限公司 | Under can detect packer sealing in real time when returning layer straddle test apparatus and method |
| CN108166974B (en) * | 2016-12-06 | 2022-02-15 | 中国石油化工股份有限公司 | Device integrated with perforation combined test and sampling |
| BR112019021328B1 (en) * | 2017-04-10 | 2023-09-26 | Packers Plus Energy Services, Inc | SINGLE TRIP MULTIZONE COMPLETION SET |
| CN109025915B (en) * | 2018-08-09 | 2020-11-13 | 南京睿盾工程科技有限公司 | Full-drift-diameter cross-isolation lower-return-hole-testing combined pipe column and operation method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105587274B (en) | 2018-09-11 |
| CN108843257A (en) | 2018-11-20 |
| CN108756779B (en) | 2019-11-01 |
| CN108843257B (en) | 2019-09-27 |
| CN105587274A (en) | 2016-05-18 |
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