CN105387980A - Sleeve thread airtightness external detection device - Google Patents
Sleeve thread airtightness external detection device Download PDFInfo
- Publication number
- CN105387980A CN105387980A CN201510827543.5A CN201510827543A CN105387980A CN 105387980 A CN105387980 A CN 105387980A CN 201510827543 A CN201510827543 A CN 201510827543A CN 105387980 A CN105387980 A CN 105387980A
- Authority
- CN
- China
- Prior art keywords
- flashboard
- glue core
- piston rod
- rubber core
- cylinder assembly
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a sleeve thread airtightness external detection device used in petroleum and natural gas exploration and development. The device comprises a main housing, a right piston rod, a left hydraulic cylinder assembly, a right rubber core, a right flashboard, a left piston rod, a left hydraulic cylinder assembly, a left rubber core and a left flashboard. The main housing is support of parts, the left piston rod drives the left flashboard and the left rubber core to move during movement, and the right piston rod drives the right flashboard and the right rubber core to move during movement; when the left piston rod and the right piston rod push the left rubber core and the right rubber core to realize closure, the left rubber core and the right rubber core enclasp the sleeve, the left rubber core, the right rubber core, the left flashboard, the right flashboard and the sleeve form an airtight space, and a sleeve thread seam is located in the airtight space; and high-pressure gas is injected into the airtight space, an instrument is utilized to detect whether air pressure in the airtight space drops, and thus whether leakage exists in the sleeve thread seam can be judged. The sleeve thread airtightness external detection device provided by the invention is easy to operate, an internal detection device is not needed to be put down into the sleeve, and the detection time is short.
Description
Technical field
The present invention relates to for the outer pick-up unit of a kind of casing threads gas tightness in petroleum natural gas exploration, belong to casing threads sealing detection technical field.
Background technology
In the middle of oil-gas field development, due to casing threads mismachining tolerance, transport or operation process in collide with, microcorrosion, the choice and operation of stop-leak compound is inappropriate, torque wrench moment value exceedes specialized range, and the factor such as clean of screw thread and sealing surface, very easily causes casing threads gas tightness to lose efficacy.So when entering sleeve pipe under well head, require that sealing property test is carried out in right casing threads junction, and sealing property test is carried out on drilling platform; By detecting casing threads gas tightness, help to solve oil gas field strong well, the blow-by of high sour well casing thread connection for a long time, the problem such as engineering safety, later development causing well head gas blowby etc. to relate to, therefore detection thimble gas tightness is the necessary means ensureing safety in production.
Because casing threads hermetic seal test is carried out on drilling platform, its space is restricted, and require that the test duration is as far as possible short, the oil pipe hermetic seal detection means of current down-hole has will two kinds: one, detected bobbin seal by hydrostatic pressing sealing experiment, this method injects water under high pressure in sleeve pipe, water column pressure situation of change in observation tube thus judge the sealing property of casing threads, this method will fill water in sleeve pipe, so the test duration is long; Test medium is water, and detection sensitivity is not as gas, and the disadvantage of the method is: string of casing is made up of hundreds and thousands of sleeve pipe of wanting, when finding pressure drop in sleeve pipe, and leakage point that can not be really concrete fast; Two, by transferring interior pick-up unit to inside pipe casing, if publication number is the patent of CN103234712A, interior pick-up unit double thread place sealing property detects, and the method often detects once needs interior pick-up unit to put into sleeve pipe, is taken out by interior pick-up unit after having detected again, operating process is too complicated, need many groups personnel to coordinate just can complete, setup time is long, is unfavorable for high-efficient homework; Simultaneously, pick-up unit is when detecting at inside pipe casing, there is pick-up unit and falls into risk in well.
Summary of the invention
The object of the invention is the shortcoming in order to overcome above-mentioned detection method, there is provided a kind of casing threads gas tightness outer pick-up unit, this device is simple to operate, detection time is short, carry out the device of thread seal detection from pipe box outside, after detecting casing threads sealing by using this device, proposing measures to rectify and reform to there is the screw thread leaked, reducing to occur in the construction of natural gas fields process probability that screw thread leaks.
The concrete technical scheme that the present invention adopts is:
The outer pick-up unit of a kind of casing threads gas tightness of the present invention, be made up of main casing, right piston rod, right hydraulic pressure cylinder assembly, right glue core, right flashboard, left piston bar, left hydraulic cylinder assembly, left glue core and left flashboard, described main casing is the support of part, left hydraulic cylinder assembly is arranged on the left side of main casing, and right hydraulic pressure cylinder assembly is arranged on the right of main casing; Left piston bar is arranged on left hydraulic cylinder component internal, and it is inner that right piston rod is arranged on right hydraulic pressure cylinder assembly; Left flashboard is connected to left piston bar right-hand member, and left flashboard is mounted in main casing inside keeps left limit, and left flashboard horizontally slips at main casing within; Right flashboard is connected to right piston rod left end, and right flashboard is mounted in main casing inside keeps right limit, and right flashboard horizontally slips at main casing within; Left glue core is arranged in the semicircular groove of left flashboard, and right glue core is arranged in the semicircular groove of right flashboard; Left piston bar drives left flashboard and the motion of left glue core when moving, drive right flashboard and the motion of right glue core when right piston rod moves; When left piston bar, right piston rod promote left glue core respectively and right glue core closes up, sleeve pipe spiral shell is embraced by left glue core, right glue core, left glue core, right glue core, left flashboard, the space that between right flashboard and sleeve pipe, formation one is airtight, and casing threads seam is in airtight space; In airtight space, inject gases at high pressure, when pressure reaches default value, carry out voltage stabilizing, whether reduce with the air pressure that instrument detects in confined space simultaneously, thus can judge whether casing threads seam crossing exists leakage.
Compared with prior art, tool has the following advantages in the present invention: when 1, detecting, pick-up unit all jacket exterior operation, simple to operate, need not in sleeve pipe under enter interior pick-up unit, detection time is short; 2, the outer pick-up unit of casing threads gas tightness need not transfer any device to inside pipe casing, can not there is pick-up unit and fall into accident in well.
Accompanying drawing explanation
Fig. 1 is the structural representation of the outer pick-up unit of a kind of casing threads gas tightness of the present invention;
Fig. 2 is the B-B cut-open view of Fig. 1;
Fig. 3 is flashboard of the present invention is the axis side views such as closed configuration;
Fig. 4 is flashboard of the present invention is the axis side views such as open mode;
Fig. 5 is the axis side views such as left glue core of the present invention, right glue core;
Fig. 6 is left glue core of the present invention, right glue core, left flashboard, right flashboard close up the sectional view forming confined space between sleeve pipe;
Fig. 7 is the axis side views such as left flashboard of the present invention.
In figure: 1. main casing, 2. right piston rod, 3. right hydraulic pressure cylinder assembly, 4. right glue core, 5. right flashboard, 6. left piston bar,
7. left hydraulic cylinder assembly, 8. left glue core, 9. left flashboard, 10. sleeve pipe, circular arc on 11. glue cores, circular arc under 12. glue cores,
13. glue core side slats.
Embodiment
Existing accompanying drawings the specific embodiment of the present invention,
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7:
The outer pick-up unit of a kind of casing threads gas tightness of the present invention, be made up of main casing 1, right piston rod 2, right hydraulic pressure cylinder assembly 3, right glue core 4, right flashboard 5, left piston bar 6, left hydraulic cylinder assembly 7, left glue core 8, left flashboard 9, described main casing 1 is the support of part, left hydraulic cylinder assembly 7 is arranged on the left side of main casing 1, and right hydraulic pressure cylinder assembly 3 is arranged on the right of main casing 1; It is inner that left piston bar 6 is arranged on left hydraulic cylinder assembly 7, and it is inner that right piston rod 2 is arranged on right hydraulic pressure cylinder assembly 3; Left flashboard 9 is connected to left piston bar 6 right-hand member, and left flashboard 9 is mounted in main casing 1 inside and keeps left limit, left flashboard 9 horizontally slips at main casing 1 within, right flashboard 5 is connected to right piston rod 2 left end, and right flashboard 5 is mounted in main casing 1 inside and keeps right limit, and right flashboard 5 horizontally slips at main casing 1 within; Left glue core 8 is arranged in the semicircular groove of left flashboard 9, and right glue core 4 is arranged in the semicircular groove of right flashboard 5; Left piston bar 6 drives left flashboard 9 and left glue core 8 to move when moving, drive right flashboard 5 and right glue core 4 to move when right piston rod 2 moves; When left piston bar 6, right piston rod 2 promote left glue core 8 respectively and right glue core 4 closes up, sleeve pipe 10 is embraced by left glue core 8, right glue core 4, left glue core 8, right glue core 4, left flashboard 9, the space that between right flashboard 8 and sleeve pipe 10, formation one is airtight, and sleeve pipe 10 screw thread seam is in airtight space; In airtight space, inject gases at high pressure, when pressure reaches default value, carry out voltage stabilizing, whether reduce with the air pressure that instrument detects in confined space simultaneously, thus can judge whether sleeve pipe 10 screw thread seam crossing exists leakage.
In Figure 5, described left glue core 8, right glue core 4 are made up of rubber, and single glue core is made up of circular arc 12 under circular arc 11, glue core on glue core and glue core side slat 13 respectively.
In figure 6, when described left glue core 8, right glue core 4, left flashboard 9, right flashboard 8 close up and sleeve pipe 10 form an airtight space.
Claims (2)
1. the outer pick-up unit of casing threads gas tightness, be made up of main casing (1), right piston rod (2), right hydraulic pressure cylinder assembly (3), right glue core (4), right flashboard (5), left piston bar (6), left hydraulic cylinder assembly (7), left glue core (8), left flashboard (9), it is characterized in that: the support that described main casing (1) is part, left hydraulic cylinder assembly (7) is arranged on the left side of main casing (1), and right hydraulic pressure cylinder assembly (3) is arranged on the right of main casing (1); It is inner that left piston bar (6) is arranged on left hydraulic cylinder assembly (7), and it is inner that right piston rod (2) is arranged on right hydraulic pressure cylinder assembly (3); Left flashboard (9) is connected to left piston bar (6) right-hand member, and left flashboard (9) is mounted in main casing (1) inside and keeps left limit, and left flashboard (9) horizontally slips at main casing (1) within; Right flashboard (5) is connected to right piston rod (2) left end, and right flashboard (5) is mounted in main casing (1) inside and keeps right limit, and right flashboard (5) horizontally slips at main casing (1) within; Left glue core (8) is arranged in the semicircular groove of left flashboard (9), and right glue core (4) is arranged in the semicircular groove of right flashboard (5); Left piston bar (6) drives left flashboard (9) and left glue core (8) motion time mobile, drive right flashboard (5) and right glue core (4) motion when right piston rod (2) is mobile; When left piston bar (6), right piston rod (2) promote left glue core (8) respectively and right glue core (4) closes up, sleeve pipe (10) is embraced by left glue core (8), right glue core (4), left glue core (8), right glue core (4), left flashboard (9), between right flashboard (8) and sleeve pipe (10), form an airtight space, and sleeve pipe (10) screw thread seam is in airtight space.
2. the outer pick-up unit of a kind of casing threads gas tightness according to claim 1, it is characterized in that: left glue core (8), right glue core (4) are made up of rubber, single glue core is made up of circular arc (12) under circular arc (11), glue core on glue core and glue core side slat (13) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510827543.5A CN105387980A (en) | 2015-11-25 | 2015-11-25 | Sleeve thread airtightness external detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510827543.5A CN105387980A (en) | 2015-11-25 | 2015-11-25 | Sleeve thread airtightness external detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105387980A true CN105387980A (en) | 2016-03-09 |
Family
ID=55420522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510827543.5A Pending CN105387980A (en) | 2015-11-25 | 2015-11-25 | Sleeve thread airtightness external detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105387980A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628492A (en) * | 2016-03-25 | 2016-06-01 | 西南石油大学 | Test device for strength and seal property of oil well pipe under shear load |
| CN107192514A (en) * | 2017-05-23 | 2017-09-22 | 沈阳亨通光通信有限公司 | Sheath defect inspection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3653254A (en) * | 1970-10-16 | 1972-04-04 | Shell Oil Co | Leak-testing internal seals in pipe joints |
| US3921437A (en) * | 1974-03-29 | 1975-11-25 | Ernest D Hauk | Apparatus and method for leak testing of tool joints between drill pipe sections |
| RU2298637C2 (en) * | 2005-08-04 | 2007-05-10 | Открытое акционерное общество "Северо-Кавказский научно-исследовательский проектный институт природных газов" Открытого акционерного общества "Газпром" (ОАО "СевКавНИПИгаз" ОАО "Газпром") | Plant for threaded casing pipe connection air-tightness determination during casing pipe lowering in well |
| CN101542259A (en) * | 2006-11-21 | 2009-09-23 | 卡泊尔投资公司 | External pipe testing tool and testing method using same |
| CN104764566A (en) * | 2015-04-22 | 2015-07-08 | 西南石油大学 | Built-out type oil casing air-tight seal detection device and detection method |
| CN204788849U (en) * | 2015-06-03 | 2015-11-18 | 西南石油大学 | Outer detection device of casing thread leakproofness |
-
2015
- 2015-11-25 CN CN201510827543.5A patent/CN105387980A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3653254A (en) * | 1970-10-16 | 1972-04-04 | Shell Oil Co | Leak-testing internal seals in pipe joints |
| US3921437A (en) * | 1974-03-29 | 1975-11-25 | Ernest D Hauk | Apparatus and method for leak testing of tool joints between drill pipe sections |
| RU2298637C2 (en) * | 2005-08-04 | 2007-05-10 | Открытое акционерное общество "Северо-Кавказский научно-исследовательский проектный институт природных газов" Открытого акционерного общества "Газпром" (ОАО "СевКавНИПИгаз" ОАО "Газпром") | Plant for threaded casing pipe connection air-tightness determination during casing pipe lowering in well |
| CN101542259A (en) * | 2006-11-21 | 2009-09-23 | 卡泊尔投资公司 | External pipe testing tool and testing method using same |
| CN104764566A (en) * | 2015-04-22 | 2015-07-08 | 西南石油大学 | Built-out type oil casing air-tight seal detection device and detection method |
| CN204788849U (en) * | 2015-06-03 | 2015-11-18 | 西南石油大学 | Outer detection device of casing thread leakproofness |
Non-Patent Citations (1)
| Title |
|---|
| 赵琦璘: ""外压检测套管螺纹密封性装置的研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628492A (en) * | 2016-03-25 | 2016-06-01 | 西南石油大学 | Test device for strength and seal property of oil well pipe under shear load |
| CN107192514A (en) * | 2017-05-23 | 2017-09-22 | 沈阳亨通光通信有限公司 | Sheath defect inspection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207017968U (en) | Oil well head annular space sealing device | |
| CN107143298A (en) | Oil well head annular space sealing device | |
| US9605521B2 (en) | Gas lift valve with mixed bellows and floating constant volume fluid chamber | |
| CN104764566B (en) | A kind of external tubing and casing pneumatic sealing test device and detection method | |
| CN102346089A (en) | Threaded connection high-pressure gas seal detection tool | |
| CN203629751U (en) | Packer tamping device | |
| CN107701147A (en) | A kind of annular pressure downhole control valve | |
| CN105387980A (en) | Sleeve thread airtightness external detection device | |
| CN202903426U (en) | Test equipment for rubber drum of packer | |
| CN103216209B (en) | Packer in tubing and casing sealing propertytest pipe | |
| CN204357426U (en) | Cross drilling tool memory-type caliper logging tool balanced structure | |
| CN102944370B (en) | Pressure device for airtightness detection of casing and manufacturing method thereof | |
| CN204788849U (en) | Outer detection device of casing thread leakproofness | |
| CN204371215U (en) | TUBE IN DEEP WELL blanking plug | |
| CN104075860A (en) | Detection tool for threaded connection air seal and detection method | |
| CN207406313U (en) | A kind of annular pressure downhole control valve | |
| CN105804693A (en) | Annulus safety valve | |
| CN209280236U (en) | LWD instrument air-tightness detection device with self-checking function | |
| CN205373978U (en) | Packing element sealing performance testing arrangement | |
| RU155716U1 (en) | DEVICE FOR DRIVING PACKING EQUIPMENT | |
| CN208587112U (en) | A kind of casing thread connection of multi-sealed hook-type screw thread | |
| CN206722824U (en) | Downhole tool pressure test device | |
| CN110206509B (en) | Water level differential pressure control valve | |
| CN202483513U (en) | Sliding sleeve for separate layer reconstruction | |
| CN105201443A (en) | Oil pipe inner stopper for putting steel wires |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160309 |
|
| WD01 | Invention patent application deemed withdrawn after publication |