CN106285578A - Automatic liquid inlet pipe column for perforation and operation method - Google Patents
Automatic liquid inlet pipe column for perforation and operation method Download PDFInfo
- Publication number
- CN106285578A CN106285578A CN201610780948.2A CN201610780948A CN106285578A CN 106285578 A CN106285578 A CN 106285578A CN 201610780948 A CN201610780948 A CN 201610780948A CN 106285578 A CN106285578 A CN 106285578A
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- China
- Prior art keywords
- perforation
- pressure
- tubing string
- feed liquor
- automatic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005553 drilling Methods 0.000 claims description 53
- 239000003999 initiator Substances 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010079 rubber tapping Methods 0.000 abstract 2
- 238000005474 detonation Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000037452 priming Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/119—Details, e.g. for locating perforating place or direction
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an automatic liquid inlet pipe column for perforation and an operation method. The tubular column comprises a gun tail, a perforating gun, a pressure tapping time-delay detonator, an automatic liquid inlet valve, an oil pipe and a positioning short section, wherein the gun tail, the perforating gun, the pressure tapping time-delay detonator and the automatic liquid inlet valve are sequentially connected from bottom to top, at least three oil pipes which are sequentially connected are arranged between the automatic liquid inlet valve and the positioning short section, and the upper end of the positioning short section is connected with the oil pipe or a drill rod. The invention can realize the one-way automatic liquid feeding by the pressure in the well in the process of putting down the perforating string by the ultra-high temperature ultra-high pressure perforation, simultaneously realize the purpose of pressure detonation in the oil pipe or the drill rod, solve the well control risk existing in the current perforating delay perforating string by the oil pipe transmission pressure, and carry out the killing operation by the small-displacement reverse circulation once the complex abnormal condition occurs at the well mouth, thereby ensuring the safe production operation of the oil-gas well.
Description
Technical field
The present invention relates to a kind of novel perforation tubular column and operational method, particularly relate to a kind of high-temperature high-pressure perforation and automatically enter
Liquid tubing string and operational method.
Background technology
Normal pressures delayed ignition operation technique is commonly used in oil pipe or drill pipe transmission perforating job tubing string, and oil pipe carries
Perforation is called for short TCP, is a kind of perforating methods grown up external nineteen seventies, in 80 year age of twentieth century
Being rapidly developed, technology is the most perfect.Perforation at high angle hole, horizontal well, high-pressure gas well, sand proof well and low permeability formation
Operation has the advantage not available for other perforating methods.Its principle refers to the perforation of the oil-gas Layer that a bite well to be penetrated out
Device is all serially connected in the tail end of tubing string, is formed in a hardwired pipe string lower going-into-well.By measuring magnetic orientation curve or putting
Penetrating linearity curve, school adjusts pipe string alignment perforation layer position deeply, ignites perforator by pressuring method, target zone is carried out perforation.But
For some exceptional wells, again carry out perforating job or pit shaft as exchanged information down in perforating job preforation tunnel and stratum
There is leakage and cannot be carried out the perforating job of the complex condition that applied pressure by annulus detonates, existing tubing transmission pressure drilling time delay is penetrated
There is bigger well control risk in hole tubing string and operational method, once complicated abnormal conditions occurs in well head, it is impossible to by entering well
Perforation tubular column is circulated kill-job.
In recent years, in the area such as Tarim Basin, the Sichuan Basin, three-hypers gas well is more, and these well reservoir conditions are complicated, oil
Gas buries deeply, and strata pressure is high.As Tarim Oilfield ultradeep well develop in order to reduce perforation negative pressure, it is achieved complex condition
Perforating job, pressure drilling technique of detonating is an indispensable key technology.But, detonate work using pressure drilling
When skill carries out perforating job, do not connect with annular space in tubing string, for balancing oil pipe or drilling rod external and internal pressure, when transferring perforation tubular column
Needing the moment to carry out liquid filling operation, perforating job time, firer's equipment down-hole time of staying and hand labor intensity are to reducing
Double above.Deep-well, ultradeep well complex geological condition also to reduce perforating job time perforation casing pressure-bearing, perforating job time
Between and firer's equipment down-hole time of staying propose new requirement.Such as storehouse car, KS9 block borehole pressure is more than 150MPa in front of the mountains, in advance
Testing temperature meets or exceeds 190 DEG C, already close to the heat resisting and pressure resisting limit of ultrahigh-pressure perforation device rifle and superhigh temperature priming system.Tarim Basin
That block strata pressure of enlightening is up to 150MPa, the individual well daily output up to 1,000,000 sides more than, and rich in corrosivity gas such as CO2, H2S
Body, brings safely bigger risk to construction operation and tubing string.For ensureing perforating appliances down-hole serviceability, need to use rationally
Perforation tubular column and gun perforation process reduce superhigh temperature ultrahigh-pressure perforation device operational pressure and time.
In prior art, Publication No. CN203685125U, publication date is that the Chinese patent literature on July 2nd, 2014 is public
Drive a kind of coiled tubing abrasive perforating reverse circulation valve, including pull bar, interstage sleeve, low-density ball, stopper, urceolus, slide block, plug
And baffle ring, when described pull bar push slide block be moved downwardly to dead point time, this instrument overall length is 630mm.With above-mentioned patent documentation it is
The prior art represented, it is impossible to being applied to during high-temperature high-pressure perforation transfers perforation tubular column, prior art cannot realize relying on
The unidirectional automatic feed liquor of borehole pressure, it is impossible to the purpose detonated of pressurizeing in realizing oil pipe or drilling rod, also can't resolve current perforation pipe
The well control risk that post exists.
Summary of the invention
It is an object of the invention to the problems referred to above overcoming prior art to exist, it is provided that a kind of perforation automatic feed liquor tubing string and
Operational method.The present invention can realize during superhigh temperature ultrahigh-pressure perforation device transfers perforation tubular column, relying on borehole pressure to realize unidirectional
Automatically feed liquor, the purpose detonated of pressurizeing in simultaneously realizing again oil pipe or drilling rod, current tubing transmission pressure drilling can be solved again
Well control risk present in time delay perforation tubular column, once there are complicated abnormal conditions in well head, can be entered by small displacement reacting cycle
Row kill-job operation, it is ensured that Oil/gas Well safety in production operation.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of perforation automatic feed liquor tubing string, it is characterised in that: include gun breech, perforating gun, pressure drilling delay initiator, automatically enter
Liquid valve, oil pipe and orientation spool, described gun breech, perforating gun, pressure drilling delay initiator, automatic liquid feed valve are the most successively
Connect, at least three oil pipes being sequentially connected with, orientation spool upper end connected pipes are set between automatic liquid feed valve and orientation spool
Or drilling rod.
Described automatic liquid feed valve is one or more.
Described automatic liquid feed valve includes body, and body is provided with multiple check valve for automatic feed liquor.
Described automatic liquid feed valve body is the tubular structure of hollow, and body is provided with multiple perforate, sets in each perforate
It is equipped with check valve.
Described check valve includes valve gap, spool, spring and sealing ring, and spring is arranged in the endoporus of spool, and sealing ring sets
Putting on valve gap, spring and spool are arranged in perforate, and valve gap is threadeded with perforate.
Testing tool and packer it is provided with on described orientation spool.
The operational method of a kind of perforation automatic feed liquor tubing string, it is characterised in that comprise the steps:
A, transferring perforation automatic feed liquor tubing string, perforation automatic feed liquor tubing string lowering velocity is less than 300m/h；
B, record drilling rod or oil pipe going down process return discharge capacity, exceedes normally return discharge capacity 1.5m if returning discharge capacity3, need to from annular space to
Liquid filling is supplemented, until filling in drilling rod or oil pipe；
To behind target zone position under c, perforation automatic feed liquor tubing string, from annular space toward filling liquid inside drilling rod and school is deep, adjust tubing string,
Perforation automatic feed liquor tubing string prepares for drilling rod after being adjusted in place in, pressurization is detonated；
D, pressurizeing in drilling rod, adjust a discharge capacity according to playing the pressure time, observe annular pressure simultaneously, annular pressure is zero or less
For normal condition；
E, it is forced into abrupt pressure reduction, drilling rod and oil pipe is inside and outside termination of pumping when connecting, and observe annular space and return liquid situation and inner pressure inside pipe；
F, time delay etc. are to be perforated, after perforation completes, walk operation under entering by operation routine.
When complex engineering situation occurs in described perforation automatic feed liquor tubing string well head in decentralization process, by automatic liquid feed valve
Carrying out reacting cycle kill-job operation, operation pressure is less than the safe initiation minimum pressure of pressure detonator.
The described perforation automatic feed liquor the highest 70MPa of resistance to pressure reduction of tubing string, maximum heatproof 200 DEG C, maximum stream flow 250L/min.
Employing it is an advantage of the current invention that:
One, the present invention solves well control risk present in current tubing transmission pressure drilling time delay perforation tubular column, improves oil
The safety and reliability of gas well formation testing completion practice；Once there are complicated abnormal conditions in well head, can pass through automatic liquid feed valve
Carrying out small displacement reacting cycle kill-job operation, operation pressure is less than the safe initiation minimum pressure of pressure detonator.
Two, use the present invention to realize during high-temperature high-pressure perforation transfers perforation tubular column, rely on borehole pressure to realize single
To automatic feed liquor, the purpose detonated of pressurizeing in simultaneously realizing again oil pipe or drilling rod；Automatically liquid feed valve is arranged on perforation tubular column
Pressure drilling initiator upper end, relies on pressure differential to realize unidirectional automatic feed liquor, opens pressure and only need 0.1MPa, penetrate in going down process
After arriving target zone position under the tubing string of hole, in tubing string, perforating gun is ignited in pressurization.
Three, The present invention reduces the perforating job time, can effectively reduce high temperature priming system under the conditions of high temperature is long-time
Crystal grain decomposition rate, it is ensured that detonate, propagation of explosion and perforation property.
Four, using inventive flow big, maximum stream flow 250L/min, versatility is high, meets entering in real time in going down process
Liquid demand.
Five, button-type of the present invention is general, and it is convenient to install, and is easily installed on 2 7/8UP TBG instruments or oil pipe.
Six, the present invention is in perforation tubular column, it is possible to according to actual job increase in demand downhole tool, as on orientation spool
Testing tool and packer can be increased according to demand, it is achieved the operation techniques such as perforating test, perforation acidifying testing combination operation.
Accompanying drawing explanation
Fig. 1 is perforation of the present invention automatic feed tube rod structure schematic diagram
Fig. 2 is the present invention automatic liquid feed valve structural representation
Figure is labeled as: 1, body；2, valve gap；3, spool；4, spring；5, gun breech；6, perforating gun；7, pressure drilling delayed ignition
Device；8, automatic liquid feed valve；9, oil pipe；10, orientation spool.
Detailed description of the invention
Embodiment 1
A kind of perforation automatic feed liquor tubing string, including gun breech 5, perforating gun 6, pressure drilling delay initiator 7, automatic liquid feed valve 8, oil
Pipe 9 and orientation spool 10, described gun breech 5, perforating gun 6, pressure drilling delay initiator 7, automatic liquid feed valve 8 are the most successively
Connecting, arrange at least three oil pipes being sequentially connected with 9 between automatic liquid feed valve 8 and orientation spool 10, orientation spool 10 upper end is even
Connect oil pipe or drilling rod.
The preferred implementation of the present embodiment is, described automatic liquid feed valve 8 is one or more.
In the present embodiment, described automatic liquid feed valve 8 includes body 1, and body 1 is provided with multiple list for automatic feed liquor
To valve.
In the present embodiment, the body 1 of described automatic liquid feed valve 8 is the tubular structure of hollow, and body 1 is provided with multiple opening
Hole, is provided with check valve in each perforate.
In the present embodiment, described check valve includes valve gap 2, spool 3, spring 4 and sealing ring, and spring 4 is arranged on spool 3
In endoporus, sealing ring is arranged on valve gap 2, and spring 4 and spool 3 are arranged in perforate, and valve gap 2 is threadeded with perforate.
In the present embodiment, described orientation spool 10 is provided with testing tool and packer.
The operational method of a kind of perforation automatic feed liquor tubing string, comprises the steps:
A, transferring perforation automatic feed liquor tubing string, perforation automatic feed liquor tubing string lowering velocity is less than 300m/h；
B, record drilling rod or oil pipe going down process return discharge capacity, exceedes normally return discharge capacity 1.5m if returning discharge capacity3, need to from annular space to
Liquid filling is supplemented, until filling in drilling rod or oil pipe；
To behind target zone position under c, perforation automatic feed liquor tubing string, from annular space toward filling liquid inside drilling rod and school is deep, adjust tubing string,
Perforation automatic feed liquor tubing string prepares for drilling rod after being adjusted in place in, pressurization is detonated；
D, pressurizeing in drilling rod, adjust a discharge capacity according to playing the pressure time, observe annular pressure simultaneously, annular pressure is zero or less
For normal condition；
E, it is forced into abrupt pressure reduction, drilling rod and oil pipe is inside and outside termination of pumping when connecting, and observe annular space and return liquid situation and inner pressure inside pipe；
F, time delay etc. are to be perforated, after perforation completes, walk operation under entering by operation routine.
When complex engineering situation occurs in described perforation automatic feed liquor tubing string well head in decentralization process, by automatic liquid feed valve
Carrying out reacting cycle kill-job operation, operation pressure is less than the safe initiation minimum pressure of pressure detonator.
The described perforation automatic feed liquor the highest 70MPa of resistance to pressure reduction of tubing string, maximum heatproof 200 DEG C, maximum stream flow 250L/min.
Embodiment 2
The preferred forms of the present invention is, in the perforating job using pressure drilling time delay automatic feed liquor tubing string, specifically fills
Join program and operational method be as follows:
The first step: assemble perforating gun, perforating bullet and priming system.
Second step: stacking pressure perforate delay initiator, the pin quantitative design of initiator is wanted according to conventional perforation operation
Rooting calculates according to specific well conditions.
3rd step: well head connects perforating gun, installs pressure drilling delay initiator.
4th step: pour silicone grease inside pressure drilling delay initiator into, and smear drilling rod stop-leak compound buckling topcoating.
5th step: at spherical radial seal liquid feed valve upper end connected pipes or drilling rod, and uniform application drilling rod stop-leak compound.
6th step: smear drilling rod stop-leak compound in spherical radial seal liquid feed valve lower end, is connected to pressure drilling time delay and rises
Quick-fried device upper end also fastens.
7th step: transfer perforation tubular column, tubing string lowering velocity is less than 300m/h.
8th step: return discharge capacity in record drilling rod or oil pipe going down process, exceedes normally return discharge capacity 1.5m if returning discharge capacity3,
Liquid filling need to be supplemented in drilling rod or oil pipe, until filling from annular space.
9th step: to behind target zone position under perforation tubular column, from annular space toward filling liquid inside drilling rod and school is deep, adjust pipe
Post, tubing string prepares for drilling rod after being adjusted in place in, pressurization is detonated.
Tenth step: use pump truck or drilling team's slush pump to pressurize in drilling rod, according to playing pressure time Reasonable adjustment discharge capacity, with
Time observe annular pressure, annular pressure is zero or less for normal condition.
Termination of pumping immediately when connecting that 11st step: be forced into abrupt pressure reduction, drilling rod and oil pipe are inside and outside, and observe annular space and return liquid feelings
Condition and inner pressure inside pipe.
12nd step: time delay etc. are to be perforated.
13rd step: after perforation completes, walks operation under entering by operation routine.
If the complex engineering situations such as overflow occurs in well head in perforation tubular column decentralization process, can be carried out by automatic liquid feed valve
Small displacement reacting cycle kill-job operation, operation pressure is less than the safe initiation minimum pressure of pressure detonator.
Claims (9)
1. a perforation automatic feed liquor tubing string, it is characterised in that: include gun breech (5), perforating gun (6), pressure drilling delayed ignition
Device (7), automatic liquid feed valve (8), oil pipe (9) and orientation spool (10), described gun breech (5), perforating gun (6), pressure drilling time delay
Initiator (7), automatic liquid feed valve (8) are sequentially connected with from bottom to up, arrange between automatic liquid feed valve (8) and orientation spool (10) to
Few three oil pipes being sequentially connected with (9), orientation spool (10) upper end connected pipes or drilling rod.
Perforation the most according to claim 1 automatic feed liquor tubing string, it is characterised in that: described automatic liquid feed valve (8) is one
Or it is multiple.
Perforation the most according to claim 1 and 2 automatic feed liquor tubing string, it is characterised in that: described automatic liquid feed valve (8) includes
Body (1), body (1) is provided with multiple check valve for automatic feed liquor.
Perforation the most according to claim 3 automatic feed liquor tubing string, it is characterised in that: the body of described automatic liquid feed valve (8)
(1) being the tubular structure of hollow, body (1) is provided with multiple perforate, is provided with check valve in each perforate.
Perforation the most according to claim 4 automatic feed liquor tubing string, it is characterised in that: described check valve includes valve gap (2), valve
Core (3), spring (4) and sealing ring, spring (4) is arranged in the endoporus of spool (3), and sealing ring is arranged on valve gap (2), spring
(4) being arranged in perforate with spool (3), valve gap (2) is threadeded with perforate.
Perforation the most according to claim 5 automatic feed liquor tubing string, it is characterised in that: described orientation spool is provided with on (10)
Testing tool and packer.
The operational method of perforation the most according to claim 1 automatic feed liquor tubing string, it is characterised in that comprise the steps:
A, transferring perforation automatic feed liquor tubing string, perforation automatic feed liquor tubing string lowering velocity is less than 300m/h；
B, record drilling rod or oil pipe going down process return discharge capacity, exceedes normally return discharge capacity 1.5m if returning discharge capacity3, need to from annular space to
Liquid filling is supplemented, until filling in drilling rod or oil pipe；
To behind target zone position under c, perforation automatic feed liquor tubing string, from annular space toward filling liquid inside drilling rod and school is deep, adjust tubing string,
Perforation automatic feed liquor tubing string prepares for drilling rod after being adjusted in place in, pressurization is detonated；
D, pressurizeing in drilling rod, adjust a discharge capacity according to playing the pressure time, observe annular pressure simultaneously, annular pressure is zero or less
For normal condition；
E, it is forced into abrupt pressure reduction, drilling rod and oil pipe is inside and outside termination of pumping when connecting, and observe annular space and return liquid situation and inner pressure inside pipe；
F, time delay etc. are to be perforated, after perforation completes, walk operation under entering by operation routine.
The operational method of perforation the most according to claim 7 automatic feed liquor tubing string, it is characterised in that described perforation enters automatically
When complex engineering situation occurs in liquid tubing string well head in decentralization process, carry out reacting cycle kill-job operation by automatic liquid feed valve, execute
Work pressure is less than the safe initiation minimum pressure of pressure detonator.
The operational method of perforation the most according to claim 8 automatic feed liquor tubing string, it is characterised in that described perforation enters automatically
The highest 70MPa of resistance to pressure reduction of liquid tubing string, maximum heatproof 200 DEG C, maximum stream flow 250L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610780948.2A CN106285578A (en) | 2016-08-31 | 2016-08-31 | Automatic liquid inlet pipe column for perforation and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610780948.2A CN106285578A (en) | 2016-08-31 | 2016-08-31 | Automatic liquid inlet pipe column for perforation and operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106285578A true CN106285578A (en) | 2017-01-04 |
Family
ID=57673636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610780948.2A Pending CN106285578A (en) | 2016-08-31 | 2016-08-31 | Automatic liquid inlet pipe column for perforation and operation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106285578A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185442A (en) * | 2019-06-05 | 2019-08-30 | 中海石油(中国)有限公司 | Displacement method kill-job experimental provision and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4738319A (en) * | 1985-08-06 | 1988-04-19 | Western Atlas International, Inc. | Apparatus and method for use in subsurface oil and gas well perforating device |
| CN103410484A (en) * | 2013-08-07 | 2013-11-27 | 中国石油化工股份有限公司 | Small-diameter tubular pump pump-passing depth checking perforating and pumping combined production method |
| CN203685125U (en) * | 2013-12-29 | 2014-07-02 | 中国石油集团渤海钻探工程有限公司 | Reverse circulation valve for coiled tubing abrasive perforating |
| CN205206786U (en) * | 2015-12-10 | 2016-05-04 | 中国石油集团川庆钻探工程有限公司 | Automatic liquid inlet valve for perforation |
| CN105840151A (en) * | 2015-01-15 | 2016-08-10 | 中国石油天然气股份有限公司 | Perforating pipe column and perforating method |
-
2016
- 2016-08-31 CN CN201610780948.2A patent/CN106285578A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4738319A (en) * | 1985-08-06 | 1988-04-19 | Western Atlas International, Inc. | Apparatus and method for use in subsurface oil and gas well perforating device |
| CN103410484A (en) * | 2013-08-07 | 2013-11-27 | 中国石油化工股份有限公司 | Small-diameter tubular pump pump-passing depth checking perforating and pumping combined production method |
| CN203685125U (en) * | 2013-12-29 | 2014-07-02 | 中国石油集团渤海钻探工程有限公司 | Reverse circulation valve for coiled tubing abrasive perforating |
| CN105840151A (en) * | 2015-01-15 | 2016-08-10 | 中国石油天然气股份有限公司 | Perforating pipe column and perforating method |
| CN205206786U (en) * | 2015-12-10 | 2016-05-04 | 中国石油集团川庆钻探工程有限公司 | Automatic liquid inlet valve for perforation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185442A (en) * | 2019-06-05 | 2019-08-30 | 中海石油(中国)有限公司 | Displacement method kill-job experimental provision and method |
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| C10 | Entry into substantive examination | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190802 Address after: 100120 Liupu Kang, Xicheng District, Beijing Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Applicant after: CHINA PETROLEUM LOGGING Co.,Ltd. Address before: Chenghua District Green Road 610051 Chengdu City, Sichuan province 1 No. 3 Chuanqing drilling Department of Science & Technology Applicant before: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
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| RJ01 | Rejection of invention patent application after publication |