CN204571952U - A kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string - Google Patents
A kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string Download PDFInfo
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- CN204571952U CN204571952U CN201520221141.6U CN201520221141U CN204571952U CN 204571952 U CN204571952 U CN 204571952U CN 201520221141 U CN201520221141 U CN 201520221141U CN 204571952 U CN204571952 U CN 204571952U
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Abstract
A kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string, comprise oil pipe one, the dark pipe nipple in school, oil pipe two, circulating valve, oil pipe three, testing valve assembly, manometer two, pressure-transmitting joint, across every packer, screen joint, spacer tube, pressure guiding joint, igniter head, perforating gun, pressure relief device, sealing shut-in valve, anchor packer, oil pipe four, vibration absorption pressure gauge supporting cylinder, screen casing one, interior pressure tube and outer pressure tube, wherein: sealing shut-in valve is between perforating gun and anchor packer, vibration absorption pressure gauge supporting cylinder is positioned at the below of sealing shut-in valve, the two ends of outer pressure tube are connected respectively to the outer pressure tube import of pressure guiding joint and sealing shut-in valve.Adopt this tubing string, can first to below lower packet penetrate layers apart test after, carry out across every combined operation of perforation and testing construction to the non-perforation layer between two-stage packer again, and the final shut-in of the first floor made is without the need to taking separately the working rig time, has cycle short, low cost and other advantages.
Description
Technical field
The utility model be about a kind of Oil/gas Well across every perforation, testing combination operation tubing string, refer in particular to a kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string.
Background technology
At Oil/gas Well across every combined operation of perforation and testing technical elements, have with the immediate oil testing tech of the utility model " Oil/gas Well across every combined operation of perforation and testing operating tool string device " and " across every combined operation of perforation and testing operating tool string "
" Oil/gas Well across every combined operation of perforation and testing operating tool string device " (number of patent application 97229886.X) adopts the tubular column structure pressing from both sides perforating gun between two-stage packer, realize just realizing, first across every packing target zone, then target zone being carried out to the institutional operation mode of perforation and test with single time running string.
" across every combined operation of perforation and testing operating tool string " (number of patent application ZL 200520106208.8) provide a kind of can realize across interlayer TCP combined well testing, again can effectively prevent perforating bullet instant of detonation produce detonation wave to electronic pressure gauge destroy across every combined operation of perforation and testing operating tool string.
Above-mentioned two technology all without the need to the well section of lower bridging plug or any perforation of cementing plug shutoff, have been saved formation testing cost, have been accelerated the formation testing progress of work.But both have the following disadvantages: one-trip string can only carry out perforation, testing combination operation to the stratum between two packers, one-trip string can not be realized first to penetrating after layers apart tests below lower packet, then carry out constructing across every combined operation of perforation and testing to the non-perforation layer between two-stage packer.
Utility model content
" one-trip string can not be realized first to penetrating after layers apart tests below lower packet for what exist in background technology, again to the non-perforation layer between two-stage packer carry out across every combined operation of perforation and testing construction " problem, the purpose of this utility model be to provide a kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string, not only can solve Problems existing in background technology, the final shut-in time that first floor can also be made to test takies no longer separately the working rig time, reach and shorten the formation testing cycle, save working rig holding time, save cost, reduce well control risk, reduce the objects such as reservoir pollution.
This object is realized by following technical scheme:
Can Xian Ce lower floor across every a combined operation of perforation and testing tubing string, comprise oil pipe one, the dark pipe nipple in school, oil pipe two, circulating valve, oil pipe three, testing valve assembly, manometer two, pressure-transmitting joint, across every packer, screen joint, spacer tube, pressure guiding joint, igniter head, perforating gun, pressure relief device, sealing shut-in valve, anchor packer, oil pipe four, vibration absorption pressure gauge supporting cylinder, screen casing one, interior pressure tube and outer pressure tube, described testing valve assembly, manometer two is between circulating valve and pressure-transmitting joint, described pressure-transmitting joint is positioned at across the top every packer, described across every packer and anchor packer composition two-stage packer, described perforating gun is between two-stage packer, described screen casing one is positioned at the below of anchor packer, described screen joint is across between packer and perforating gun, described sealing shut-in valve is between perforating gun and anchor packer, described vibration absorption pressure gauge supporting cylinder is positioned at the below of sealing shut-in valve, described interior pressure tube passes through and is sealed and matched across every packer and screen joint, and the two ends of described outer pressure tube are connected respectively to the outer pressure tube import of pressure guiding joint and sealing shut-in valve.
Described sealing shut-in valve is the tubular body of a multilayer, radially there is skin, intermediate layer and internal layer, described skin is connected with top connection, air chamber joint, ball valve urceolus, setting-out valve union and lower contact vertically from top to bottom, and air chamber joint outer wall is provided with outer pressure tube import; Described intermediate layer has the axle being slidably disposed in described outer inner side, axle is fixed on top connection by cutting off, described intermediate layer is also sequentially provided with in the axis extended line direction of axle lower end edge axle and connects pawl, connecting short section, top race and bottom race, top race sidewall offers two parallel grooves, the motion arm of two strips is embedded in described two parallel grooves respectively, the top of motion arm and the bottom snapping of connecting short section; The ball valve that described internal layer is provided with upper ball base, lower ball base and is incorporated in two ball seats in upper and lower seat ring, be provided with a spring, and ball valve coordinates between ball valve and upper ball base with the protruding operating side of motion arm; Described top connection is provided with outer circulation hole, and described axle is also provided with Inner eycle hole in the inner side in described outer circulation hole.
Whereby, before entering well, outer circulation hole and the Inner eycle hole of above-mentioned sealing shut-in valve are in the position of axially aligning, and ball valve is in feed-through locations, and the production passage of sealing shut-in valve is in open mode, when needs sealing, operating pressure (p1) is pumped into from oil jacket annular space, together with liquid column hydrostatic pressure, interior pressure tube is entered from pressure-transmitting joint, arrive pressure guiding joint, again by outer pressure tube, outer pressure tube import enters sealing shut-in valve, act in axle, cut off and cut off, exercise ball valve under promoting axle to close, and axle is pushed against downwards further, staggered downwards in Inner eycle hole, until in, outer circulation hole is in the closed position, close and produce passage, complete sealing and first floor closing well, now encirclement formation fluid sample above ball valve, complete the well sampling of first floor.
Preferably, the axial length of the air chamber of above-mentioned sealing shut-in valve is greater than the axial stroke of ball valve closedown, is also greater than the axial stroke that inside and outside circulation port arrives fastening position.
Preferably, above-mentioned sealing shut-in valve top connection be blind, setting-out valve union outer wall is provided with setting-out valve assembly and plug, for ground setting-out.
Preferably, the described ball valve of above-mentioned sealing shut-in valve is provided with two potholes, fastens respectively with the protruding operating side of each motion arm; And described connecting short section lower end has a groove, the upper end of described motion arm has projection, and the groove of this projection and connecting short section lower end fastens.
Preferably, the outer wall of the described axle of above-mentioned sealing shut-in valve and top connection inwall cooperation place, within it circulation port top is provided with and is no less than two groups of sealing ring groups, Inner eycle hole and be provided with between cutting off and be no less than one group of sealing ring group; The outer wall of the described axle of above-mentioned sealing shut-in valve and air chamber joint cooperation place, cut off to be provided with between air chamber and be no less than one group of sealing ring group, is provided with and is no less than one group of sealing ring group below air chamber.
Preferably, the top of the described connection pawl of above-mentioned sealing shut-in valve utilizes elastic card in the lower end of described axle.
In above-mentioned tubing string, described across being all ballast setting type packer every packer and anchor packer.
Whereby, by after the sealing to manometer and the admission of the pressure gauge entrained by vibration absorption pressure gauge supporting cylinder whether pressure data is consistent is analyzed, the sealing of anchor packer 17 at test period is judged.
By above technical scheme, the utility model has the advantage of:
(1) can be supporting with the testing valve such as MFE, APR, one-trip string realize Xian Ce lower floor across every combined operation of perforation and testing, improve data admission quality, and envelope can be tested to anchor packer.
(2) adopt mode oil jacket annular space being applied to different pump pressure, complete first floor sealing and closing well, second layer perforation respectively.
(3) by arranging sealing shut-in valve and arrange the mode of vibration absorption pressure gauge supporting cylinder (carrying pressure gauge) below sealing shut-in valve, during carrying out first floor final shut-in, second layer perforation, test can be carried out, the final shut-in of first floor is made not need to take separately the working rig time, optimize the activity duration, achieve formation testing and put forward effect.
(4) this technique itself also can reduce lower tubular column, kill-job number of times, reaches the formation testing cycle that shortens, saves working rig holding time, reaches objects such as saving cost, minimizing well control risk, minimizing reservoir pollution.
Accompanying drawing explanation
Accompanying drawing 1 be the utility model a kind of can Xian Ce lower floor across the schematic diagram every combined operation of perforation and testing tubing string;
Accompanying drawing 2 is the half sectional view of sealing shut-in valve of the present utility model;
Accompanying drawing 3 is the sectional view of sealing shut-in valve of the present utility model in air chamber part;
Accompanying drawing 4 is the sectional view of sealing shut-in valve of the present utility model at setting-out valve portion;
Accompanying drawing 5 is the partial half view at ball valve assembly part of sealing shut-in valve of the present utility model.
In accompanying drawing 1: the 1 dark pipe nipple in oil pipe one, 1a oil pipe two, 1b oil pipe three, 1c oil pipe four, 2 school, 3 circulating valves, 4 testing valve assemblies, 5 manometers, 6 pressure-transmitting joints, 7 across every packer, 8 screen joint, pressure tube in 9,10 spacer tubes, 11 pressure guiding joints, 12 igniter head, 13 perforating guns, 14 outer pressure tubes, 15 pressure relief devices, 16 sealing shut-in valves, 17 anchor packers, 18 vibration absorption pressure gauge supporting cylinders, 19 screen casings one, 29 second layers, 30 first floors, 31 sleeve pipes, 32 oil jacket annular spaces;
In accompanying drawing 2-4: 101 top connections, the outer by-pass prot of 101a, 102 axles, 102a internal bypass hole, 103 cut off, 104 outer pressure tube imports, 106 air chamber joints, 106a air chamber, 107 connect pawl, 108 ball valve urceolus, 109 connecting short sections, 110 motion arms, 111 top races, 112 springs, 113 upper ball bases, 114 ball valves, 115 lower ball bases, 116 bottom races, 117 setting-out valve unions, 118 lower contacts, 119 setting-out valve assemblies, 120 plugs, 131 sealing ring groups, 131a sealing ring group, 131b sealing ring group, 131c sealing ring group, 132 jackscrews, 133 sealing ring groups, 134 sealing ring groups, 135 beams, 136 jackscrews, 137 sealing ring groups, 138 support rings, 139 support rings, 140 sealing ring groups, 141 sealing ring groups, 142 sealing ring groups, 143 jackscrews, 144 sealing ring groups, 145 sealing ring groups, 146 sealing ring groups, 147 jackscrews, 148 sealing ring groups, 149 sealing ring groups,
In accompanying drawing 5: 109a groove, the protruding operating side of 110a, 110b is protruding, 114a pothole.
Detailed description of the invention
For making the purpose of this utility model, technological means and technique effect have more complete and clearly disclose, being below described in detail, and seeing also accompanying drawing and part numbers.
The utility model provides a kind of sealing shut-in valve of reasonable and compact in structure, as shown in Figure 2.See also Fig. 2-4 below, sealing shut-in valve 16 of the present utility model can be connected on described two-layer layering perforation-zonal testing axle-linked cable-car, it is the tubular body of a multilayer, this sealing shut-in valve radially has skin, intermediate layer and internal layer, described skin is connected with top connection 101, air chamber joint 106, ball valve urceolus 108, setting-out valve union 117 and lower contact 118 vertically from top to bottom, and air chamber joint 106 outer wall is provided with outer pressure tube import 104; Described intermediate layer has the axle 102 being slidably disposed in described outer inner side, axle 102 is fixed on top connection 101 by cutting off 103, described intermediate layer is also sequentially provided with in the axis extended line direction of axle 102 lower end edge axle 102 and connects pawl 107, connecting short section 109, top race 111 and bottom race 116, top race 111 sidewall offers two parallel grooves, the motion arm 110 of two strips is embedded in described two parallel grooves respectively, the top of motion arm 110 and the bottom snapping of connecting short section 109; The ball valve 114 that described internal layer is provided with upper ball base 113, lower ball base 115 and is incorporated in two ball seats in top race 111, bottom race 116, between ball valve 114 and upper ball base, 113 are provided with a spring 112, and ball valve 114 coordinates with the protruding operating side 110a of motion arm 110; Described top connection 101 is provided with outer circulation hole 101a, and described axle 102 is also provided with Inner eycle hole 102a in the inner side of described outer circulation hole 101a.
Further, referring again to Fig. 2, the axial length of the air chamber 106a of above-mentioned sealing shut-in valve 16 is the descending maximum axial distance of axle 102, is greater than the axial stroke that ball valve 114 is closed, is also greater than the axial stroke that Inner eycle hole 102a, outer circulation hole 101a arrive fastening position.
Further, referring again to Fig. 2-5, above-mentioned sealing shut-in valve top connection 101 be blind so that the fluid sample of encirclement first floor 30 when sealing and closing well; Setting-out valve union 117 outer wall is provided with setting-out valve assembly 119 and plug 120, so that ground setting-out.
Further, referring again to Fig. 2-5, the described ball valve 114 of above-mentioned sealing shut-in valve 16 is provided with two pothole 114a, fastens respectively with the protruding operating side 110a of each motion arm 110, moves axially the motion conversion of rotating to ball valve 114 to realize axle 102; And described connecting short section 109 lower end has a groove 109a, the upper end of described motion arm 110 has protruding 110b, the groove 109a of this protruding 110b and connecting short section 109 lower end fastens, and the transmission of the axial sunken caves of axle 102 can be made more reliable and stable by inlay card design.
Further, in above-mentioned sealing shut-in valve 16, described axle 102 outer wall is provided with one group of sealing ring group 131 near upper end surface, on this outer wall, 102a top, Inner eycle hole, close 102a place, Inner eycle hole are provided with two groups of sealing ring group 131a; Above-mentioned axle 102 outer wall is provided with two groups of sealing ring group 131b at Inner eycle hole 102a and between cutting off 103, near 102a place, Inner eycle hole; On the outer wall that described axle 102 coordinates with air chamber joint 106, to be positioned at above air chamber 106a, to be provided with one group of sealing ring group 134 near axle 102 outer wall of air chamber 106a, axle 102 outer wall below air chamber 106a is provided with one group of sealing ring group 131c.Utilize above structure, stop fluid to pass through from gap.
Further, the top of described connection pawl 107 utilizes elastic card in the lower end of described axle 102.
Above-mentioned sealing shut-in valve of the present utility model, its operating principle is as follows:
Referring again to Fig. 1-2, before entering well, outer circulation hole 101a and the Inner eycle hole 102a of above-mentioned sealing shut-in valve 16 are in the position of axially aligning, and ball valve 114 is in feed-through locations, and the production passage of sealing shut-in valve 16 is in open mode.Sealing shut-in valve 16 is in open mode and enters well.Its operating principle is: when needs sealing, operating pressure (p1) is pumped into from oil jacket annular space 32, together with liquid column hydrostatic pressure, interior pressure tube 9 is entered from pressure-transmitting joint 7, arrive pressure guiding joint 11, again by outer pressure tube 14, outer pressure tube import 104 enters sealing shut-in valve 16, act in axle 102, cut off and cut off 103, promote axle 102 times enforcement ball valves 114 to close, and by axle 102 pushing and pressing downwards further, Inner eycle hole 102a is staggered downwards, until in, 102a is in the closed position in outer circulation hole, close and produce passage, complete sealing 114 and first floor 30 closing well, now encirclement formation fluid sample above ball valve 114, complete the well sampling of first floor 30.
The utility model also provide a kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string, comprise oil pipe 1, the dark pipe nipple 2 in school, oil pipe two 1a, circulating valve 3, oil pipe three 1b, testing valve assembly 4, manometer 25, pressure-transmitting joint 6, across every packer 7, screen joint 8, spacer tube 10, pressure guiding joint 11, igniter head 12, perforating gun 13, pressure relief device 15, sealing shut-in valve 16, anchor packer 17, oil pipe four 1c, vibration absorption pressure gauge supporting cylinder 18, screen casing 1, interior pressure tube 9 and outer pressure tube 14, described testing valve assembly 4, manometer 25 is between circulating valve 3 and pressure-transmitting joint 6, described pressure-transmitting joint 6 is positioned at across the top every packer 7, describedly form two-stage packer across every packer 7 and anchor packer 17, described perforating gun 13 is between two-stage packer, described screen casing 1 is positioned at the below of anchor packer 17, described screen joint 8 is across between packer 7 and perforating gun 13, described sealing shut-in valve 16 is between perforating gun 13 and anchor packer 17, described interior pressure tube 9 passes through and is sealed and matched across every packer 7 and screen joint 8, the two ends of described outer pressure tube 14 are connected respectively to the outer pressure tube import 104 of pressure guiding joint 11 and sealing shut-in valve 16, and manometer 25 and vibration absorption pressure gauge supporting cylinder 18 are provided with pressure gauge.
Further, described across being all ballast setting type packer every packer 7 and anchor packer 17, in order to packing oil jacket annular space 32, the second layer 29, first floor 30.
Further, described vibration absorption pressure gauge supporting cylinder 18 is positioned at the below of sealing shut-in valve 16, after sealing shut-in valve 16 cuts out, can realize surveying first floor 30 final shut-in pressure, first floor 30 final shut-in takies no longer separately the working rig time and anchor packer 17 is tested to the object of envelope.
Further, described outer pressure tube 14 two ends are connected respectively to the outer pressure tube import 104 of pressure guiding joint 11 and sealing shut-in valve 16.
By described instrument to specifications the set of locations shown in accompanying drawing 1 dress up rear a kind of can the going into the well across every combined operation of perforation and testing tubing string of Xian Ce lower floor.
The utility model also provide above-mentioned a kind of can Xian Ce lower floor across the method for operating every combined operation of perforation and testing tubing string, comprise the steps:
First step school is dark, set, first floor 30 is tested (not containing the final shut-in of first floor): by a kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string G.I.H projected depth, school is dark, after adjustment tubing string, set packer, carry out multiple switching well according to the hints on operation of testing valve assembly 4, complete and carry out first floor test (not containing the final shut-in of this layer);
Second step first floor 30 sealing (comprising the final shut-in of first floor): pump into operating pressure (p1) by oil jacket annular space and close sealing shut-in valve 16, complete first floor 30 sealing and final shut-in (while sealing, automatically complete the well sampling of first floor, and enter the final shut-in of first floor);
3rd step well-flushing, make negative pressure: after completing first floor 30 sealing, according to working design requirement, as needed well-flushing, making negative pressure, then open circulating valve carry out well-flushing, make negative pressure after close circulating valve again; Otherwise, skip the 3rd step, enter the 4th step;
The 4th step second layer 29 perforation: pump into operating pressure (p2) by oil jacket annular space and ignite perforating gun, complete the second layer 29 perforation;
The 5th step second layer 29 is tested: after the second layer 29 perforation, carries out multiple switching well, complete and carry out second layer test according to the hints on operation of testing valve assembly 4;
6th step kill-job, deblocking, lift pipe string: after completing the test of whole layer, open circulating valve 3, carry out well-flushing, kill job; After kill-job terminates, tear well head open, direct upper lifting pipe post, successively the whole packer of deblocking, by a kind of can all the tripping out across every combined operation of perforation and testing tubing string of Xian Ce lower floor.
As above can Xian Ce lower floor across the method for operating every combined operation of perforation and testing tubing string, wherein: described operating pressure (p1) < operating pressure (p2).
Whereby, when oil jacket annular space 32 pumps into operating pressure (p1), cutting off of sealing shut-in valve 16 103 is cut off, closes sealing shut-in valve 16, while realizing first floor 30 sealing, enter the final shut-in of first floor 30; Further, when oil jacket annular space 32 pumps into operating pressure (p2), cutting off of igniter head is cut off (action is complete for sealing shut-in valve 16 before this, now automatic as plug use), makes igniter head 12 realize igniting.
Whereby, by after the sealing to manometer 25 and the admission of the pressure gauge entrained by vibration absorption pressure gauge supporting cylinder 18 whether pressure data is consistent is analyzed, the sealing of anchor packer 17 at test period is judged.
In aforesaid operations method, every one deck oil-gas Layer, before final shut-in, if needed, can also carry out storey increase design operation.
Above act is only the schematic section Example of the utility model; and be not used to limit scope of the present utility model; any those skilled in the art; equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should be included within this patent protection domain.
Claims (3)
1. a Zhong Kexiance lower floor across every TCP combined well testing tubing string, comprise oil pipe one (1), the dark pipe nipple in school (2), oil pipe two (1a), circulating valve (3), oil pipe three (1b), testing valve assembly (4), manometer two (5), pressure-transmitting joint (6), across every packer (7), screen joint (8), spacer tube (10), pressure guiding joint (11), igniter head (12), perforating gun (13), pressure relief device (15), sealing shut-in valve (16), anchor packer (17), oil pipe four (1c), vibration absorption pressure gauge supporting cylinder (18), screen casing one (19), interior pressure tube (9) and outer pressure tube (14), is characterized in that: described testing valve assembly (4), manometer two (5) is positioned between circulating valve (3) and pressure-transmitting joint (6), described pressure-transmitting joint (6) is positioned at across the top every packer (7), described across every packer (7) and anchor packer (17) composition two-stage packer, described perforating gun (13) is between two-stage packer, described screen casing one (19) is positioned at the below of anchor packer (17), described screen joint (8) is positioned at across between packer (7) and perforating gun (13), described sealing shut-in valve (16) is positioned between perforating gun (13) and anchor packer (17), described vibration absorption pressure gauge supporting cylinder (18) is positioned at the below of sealing shut-in valve (16), described interior pressure tube (9) is passed through and is sealed and matched across every packer (7) and screen joint (8), the two ends of described outer pressure tube (14) are connected respectively to the outer pressure tube import (104) of pressure guiding joint (11) and sealing shut-in valve (16).
2. according to claim 1 a kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string, it is characterized in that: described sealing shut-in valve (16) is the tubular body of a multilayer, radially there is skin, intermediate layer and internal layer, described skin is connected with top connection (101), air chamber joint (106), ball valve urceolus (108), setting-out valve union (117) and lower contact (118) vertically from top to bottom, and air chamber joint (106) outer wall is provided with outer pressure tube import (104), described intermediate layer has the axle (102) being slidably disposed in described outer inner side, axle (102) is fixed on top connection (101) by cutting off (103), described intermediate layer is also sequentially provided with in the axis extended line direction of axle (102) lower end edge axle (102) and connects pawl (107), connecting short section (109), top race (111) and bottom race (116), top race (111) sidewall offers two parallel grooves, the motion arm (110) of two strips is embedded in described two parallel grooves respectively, the top of motion arm (110) and the bottom snapping of connecting short section (109), the ball valve (114) that described internal layer is provided with upper ball base (113), lower ball base (115) and is incorporated in two ball seats in upper and lower seat ring, between ball valve (114) and upper ball base, (113) are provided with a spring (112), and ball valve (114) coordinates with the protruding operating side of motion arm (110), described top connection (101) is provided with outer circulation hole (101a), and described axle (102) is also provided with Inner eycle hole (102a) in the inner side of described outer circulation hole (101a).
3. according to claim 1 a kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string, it is characterized in that: described across being all ballast setting type packer every packer (7) and anchor packer (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221141.6U CN204571952U (en) | 2015-04-14 | 2015-04-14 | A kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221141.6U CN204571952U (en) | 2015-04-14 | 2015-04-14 | A kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string |
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| CN204571952U true CN204571952U (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520221141.6U Expired - Fee Related CN204571952U (en) | 2015-04-14 | 2015-04-14 | A kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150446A (en) * | 2015-04-14 | 2016-11-23 | 张路铭 | A kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string and operational approach thereof |
| CN110608018A (en) * | 2019-09-16 | 2019-12-24 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Isolated gas lift drainage gas production pipe string |
| 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 |
-
2015
- 2015-04-14 CN CN201520221141.6U patent/CN204571952U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150446A (en) * | 2015-04-14 | 2016-11-23 | 张路铭 | A kind of can Xian Ce lower floor across every combined operation of perforation and testing tubing string and operational approach thereof |
| CN106150446B (en) * | 2015-04-14 | 2018-12-21 | 华通科创(唐山)石油工程技术服务有限公司 | It is a kind of can Xian Ce lower layer across every combined operation of perforation and testing tubing string and its operating method |
| CN110608018A (en) * | 2019-09-16 | 2019-12-24 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Isolated gas lift drainage gas production pipe string |
| 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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