CN204535932U - A kind of external tubing and casing pneumatic sealing test device - Google Patents
A kind of external tubing and casing pneumatic sealing test device Download PDFInfo
- Publication number
- CN204535932U CN204535932U CN201520247826.8U CN201520247826U CN204535932U CN 204535932 U CN204535932 U CN 204535932U CN 201520247826 U CN201520247826 U CN 201520247826U CN 204535932 U CN204535932 U CN 204535932U
- Authority
- CN
- China
- Prior art keywords
- center tube
- end cover
- casing
- tubing
- sleeve
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a kind of external tubing and casing pneumatic sealing test device, belong to the oil casing collar sealing detection field of oil exploitation.The utility model comprises outer tubing string, and the upper and lower side of outer tubing string arranges upper end cover and bottom end cover respectively; Be provided with upper center tube, valve seat and lower center tube in outer tubing string, upper center tube connects lower center tube by valve seat, and the sidewall of wherein upper center tube and lower center tube is equipped with side opening; Be provided with corresponding with its side opening inside upper center tube, and can the upper sliding sleeve of relative sliding, be configured with telescopic upper packing element between upper sliding sleeve and upper end cover; Be provided with corresponding with its side opening inside lower center tube, and can the low sleeve of relative sliding, be configured with telescopic lower rubber cylinder between low sleeve and bottom end cover.Whether the utility model is operationally placed in oil casing collar outside, uses gas detecting instrument to detect tubing and casing inwall gas, leaked and judge tubing and casing impermeability, efficiently solve small size tubing and casing pneumatic sealing test problem by detection gas.
Description
Technical field
The utility model relates to the oil casing collar sealing detection field of oil exploitation, especially a kind of screw thread air-leakage test for petroleum natural gas exploration small-medium size sleeve pipe, specifically a kind of external tubing and casing pneumatic sealing test device.
Background technology
Along with the development of the exploratory development such as deep-well, horizontal well technology, drilling completion, injection-production technology etc. are had higher requirement.In recovery process, wellhead pressure constantly increases, and the wellhead pressure even had reaches 100MPa.If oil casing threaded connection gas tightness lost efficacy, will cause huge economic loss and serious environmental pollution, in order to ensure the safety in production of petroleum gas, each oil gas field requires more and more higher to the gas tightness of the tubing and casing of onsite application.
What current use was more is built-in pneumatic sealing test instrument, built in test instrument is directly put into tubing and casing and is detected, and is mainly used in the tubing and casing that diameter is larger, and for undersized tubing and casing, due to size restriction, if continue to use existing built in test instrument principle, be then difficult to produce the testing tool can putting into small size tubing and casing, in addition, if built in test tool sizes is less, lighter weight, in testing process, testing tool easily goes out pit shaft, causes security incident.
Summary of the invention
Goal of the invention of the present utility model is: for above-mentioned Problems existing, a kind of external tubing and casing pneumatic sealing test device is provided, oil casing collar outside is placed in during work, gas detecting instrument is used to detect tubing and casing inwall gas, whether leaked by detection gas and judge tubing and casing impermeability, efficiently solve small size tubing and casing pneumatic sealing test problem.
The technical solution adopted in the utility model is as follows:
External tubing and casing pneumatic sealing test device of the present utility model, comprise outer tubing string, the upper and lower side of described outer tubing string arranges upper end cover and bottom end cover respectively; Be provided with upper center tube, valve seat and lower center tube in described outer tubing string, described upper center tube connects lower center tube by valve seat, and the sidewall of wherein upper center tube and lower center tube is equipped with side opening; Be provided with corresponding with its side opening inside described upper center tube, and can the upper sliding sleeve of relative sliding, be configured with telescopic upper packing element between described upper sliding sleeve and upper end cover; Be provided with corresponding with its side opening inside described lower center tube, and can the low sleeve of relative sliding, be configured with telescopic lower rubber cylinder between described low sleeve and bottom end cover.
Due to said structure, tubing string upper end is threaded connection upper end cover outside, upper end cover is provided with through hole, detection gas is passed into pick-up unit by this through hole, for the air-leakage test to tubing and casing, tubing string lower end is connected with bottom end cover outside, this bottom end cover can the outer gap between tubing string and lower center tube of shutoff, make outer tubing string and upper, can be formed between lower center tube can the cavity of gas storage, upper, side opening is furnished with outside lower center tube, be convenient to outer tubing string and upper, on gas between lower center tube flows into, in the plunger shaft that low sleeve is formed, gap is had between upper sliding sleeve and upper center tube, gap is had between low sleeve and lower center tube, after gases at high pressure enter, upper sliding sleeve can only move to upper end cover direction, low sleeve can only move to bottom end cover direction, upper packing element is had above upper sliding sleeve, thus upper sliding sleeve can promote packing element, make it to set after compression is fitted with tubing and casing outer wall, simultaneously, lower rubber cylinder is had below low sleeve, thus low sleeve can promote lower rubber cylinder, make it to set after compression is fitted with tubing and casing outer wall, make the space that between packing element and lower rubber cylinder, formation one is airtight, this space is just in time positioned at the box cupling place of tubing and casing, thus by detecting the gas at tubing and casing this box cupling place inner, judge the gas tightness of tubing and casing.A kind of external tubing and casing of the utility model pneumatic sealing test apparatus structure is simple, cost is lower, it is precisely higher to detect, after being detected by the gas tightness of this device to tubing and casing screw thread, according to testing result, can rectify and improve for the screw thread of poor sealing, for judging that tubing and casing gas sealing ability provides a kind of detection approach newly more accurately, guarantee the safety in natural petroleum gas field exploration process, do not limit by size because whole device is positioned at tubing and casing outside, be therefore particularly suitable for the gas tightness detecting small size tubing and casing.
External tubing and casing pneumatic sealing test device of the present utility model, described upper sliding sleeve is matched with the side opening position of upper center tube inwall, the mating surface of described upper sliding sleeve and upper center tube is provided with O-ring seal, when making air feed in upper center tube upper-side hole, described upper sliding sleeve can slide relative to upper center tube and form motive seal; Described low sleeve is matched with the side opening position of lower center tube inwall, and described low sleeve and lower center tube mating surface are provided with O-ring seal, and when making lower center tube upper-side hole air feed, described low sleeve can slide relative to lower center tube and form motive seal.
Due to said structure, can slide relative to upper center tube by upper sliding sleeve and form motive seal; And low sleeve can slide relative to lower center tube and form motive seal, when side opening air feed, upper packing element is compressed to be realized setting with tubing and casing wall contacts; Lower rubber cylinder is compressed to be realized setting with tubing and casing contact internal walls, and forms ring seal space between tubing and casing outer wall and pick-up unit inwall; Then follow-up sealing propertytest is convenient to.
External tubing and casing pneumatic sealing test device of the present utility model, described valve seat is furnished with the relative gas admittance valve in position and air outlet valve; Wherein gas admittance valve and air outlet valve are positioned at the circumferentially same of valve seat, and spaced 180 ° of layouts; The upper and lower end of described valve seat is threadedly connected to upper center tube lower end, lower center tube upper end respectively, and is respectively equipped with O-ring seal in the junction of valve seat and upper center tube, valve seat and lower center tube.
Due to said structure, the sealing effectiveness at each link position place can be guaranteed, thus can control to the air feed in ring seal space and exhaust, thus realize the sealing propertytest to tubing and casing, ensure the accuracy of its testing result.
External tubing and casing pneumatic sealing test device of the present utility model, is provided with protective sleeve two, between upper packing element and upper end cover, is provided with protective sleeve one between described upper sliding sleeve and upper packing element; Be provided with lower protective sleeve one between described low sleeve and lower rubber cylinder, between lower rubber cylinder and bottom end cover, be provided with lower protective sleeve two.
Due to said structure, can be played a protective role to upper sliding sleeve, upper packing element, lower rubber cylinder and low sleeve by protective sleeve, avoid being damaged when upper packing element and lower rubber cylinder compress, make its life-span permanent.
External tubing and casing pneumatic sealing test device of the present utility model, described upper end cover and outer tubing string are threaded connection, and described upper end cover is sealed with outer tubing string, upper center tube respectively by O-ring seal; Described upper end cover is provided with the air admission hole aiming at gap between outer tubing string and upper center tube, and described upper end cover is provided with suspension ring; Described bottom end cover is threaded connection outer tubing string, and described bottom end cover is sealed with outer tubing string, lower center tube respectively by O-ring seal.
Owing to employing said structure, upper end cover and outer tubing string are threaded connection, be provided with O RunddichtringO outside upper end cover simultaneously, , prevent from detecting gas from the slot leakage between upper end cover and outer tubing string, O RunddichtringO is provided with inside upper end cover, prevent from detecting gas from the slot leakage between upper end cover and upper center tube, upper end cover there is air admission hole, air admission hole upper end is shaped with pipe thread, be connected with feeder, upper end cover is connected by square thread with suspension ring, bear the gravity of whole pick-up unit, bottom end cover and outer tubing string are threaded connection, can the outer gap between tubing string and lower center tube of shutoff, be provided with O RunddichtringO outside bottom end cover simultaneously, prevent from detecting gas from the slot leakage between upper end cover and outer tubing string, O RunddichtringO is provided with inside upper end cover, prevent from detecting gas from the slot leakage between upper end cover and upper center tube.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
1, external tubing and casing pneumatic sealing test device of the present utility model, oil casing collar outside is placed in during work, gas detecting instrument is used to detect tubing and casing inwall gas, whether leaked by detection gas and judge tubing and casing impermeability, efficiently solve small size tubing and casing pneumatic sealing test problem.
2, external tubing and casing pneumatic sealing test device of the present utility model, structure is simple, lightweight, cost is low, be convenient to transport, and detection method is simple to operate, highly sensitive, reliable operation, good stability, effectively can reject the tubing and casing of leakage;
3, external tubing and casing pneumatic sealing test device of the present utility model, for more accurately judging that tubing and casing gas sealing ability provides a kind of detection approach newly, guarantee the safety in natural petroleum gas field exploration process, do not limit by size because whole device is positioned at tubing and casing outside, be therefore particularly suitable for the gas tightness detecting small size tubing and casing.
Accompanying drawing explanation
The utility model illustrates by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 the utility model is at the schematic diagram of off working state;
Fig. 2 the utility model is at the schematic diagram of pressurized operation state;
Fig. 3 the utility model is at the schematic diagram of pressure release state;
In figure: 1-suspension ring one, 2-air admission hole, the outer O-ring seals of 3-upper end cover, 4-upper center tube, the outer tubing string of 5-, 6-upper sliding sleeve O-ring seals one, 7-upper center tube side opening one, 8-upper sliding sleeve O-ring seals three, 9-valve seat, 10-gas admittance valve, 11-valve seat O-ring seals two, 12-lower center tube, 13-low sleeve O-ring seals one, 14-lower center tube side opening one, 15-low sleeve O-ring seals three, the outer O-ring seals of 16-bottom end cover, 17-bottom end cover, protective sleeve two under 18-, O-ring seals in 19-bottom end cover, 20-lower rubber cylinder, protective sleeve one under 21-, 22-low sleeve O-ring seals four, 23-low sleeve O-ring seals two, 24-lower center tube side opening two, 25-low sleeve, 26-air outlet valve, 27-valve seat O-ring seals 1, 28-box cupling, 29-upper sliding sleeve O-ring seals four, 30-upper center tube side opening two, 31-upper sliding sleeve, 32-upper sliding sleeve O-ring seals two, the upper protective sleeve two of 33-, the upper packing element of 34-, the upper protective sleeve one of 35-, O-ring seals in 36-upper end cover, 37-upper end cover, 38-suspension ring 2.
Embodiment
All features disclosed in this instructions, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this instructions (comprising any accessory claim, summary), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
As shown in Figure 1 to Figure 3, external tubing and casing pneumatic sealing test device of the present utility model, comprises outer tubing string 5, and the upper and lower side of described outer tubing string 5 arranges upper end cover 37 and bottom end cover 17 respectively; Be provided with upper center tube 4, valve seat 9 and lower center tube 12 in described outer tubing string 5, described upper center tube 4 connects lower center tube 12 by valve seat 9, wherein upper center tube 4 and the sidewall of lower center tube 12 is equipped with side opening; Be provided with corresponding with its side opening inside described upper center tube 4, and can the upper sliding sleeve 31 of relative sliding, be configured with telescopic upper packing element 34 between described upper sliding sleeve 31 and upper end cover 37; Be provided with corresponding with its side opening inside described lower center tube 12, and can the low sleeve 25 of relative sliding, be configured with telescopic lower rubber cylinder 20 between described low sleeve 25 and bottom end cover 17; Wherein said upper sliding sleeve 31 is matched with the side opening position of upper center tube 4 inwall, described upper sliding sleeve 31 is provided with O-ring seal with the mating surface of upper center tube 4, when making air feed in upper center tube 4 upper-side hole, described upper sliding sleeve 31 can slide relative to upper center tube 4 and form motive seal; Described low sleeve 25 is matched with the side opening position of lower center tube 12 inwall, described low sleeve 25 is provided with O-ring seal with lower center tube 12 mating surface, when making lower center tube 12 upper-side hole air feed, described low sleeve 25 can slide relative to lower center tube 12 and form motive seal; Wherein said valve seat 9 is furnished with the relative gas admittance valve in position 10 and air outlet valve 26; Wherein gas admittance valve 10 and air outlet valve 26 are positioned at the circumferentially same of valve seat 9, and spaced 180 ° of layouts; The upper and lower end of described valve seat 9 is threadedly connected to upper center tube 4 lower end, lower center tube 12 upper end respectively, and is respectively equipped with O-ring seal at valve seat 9 and upper center tube 4, valve seat 9 with the junction of lower center tube 12; Be provided with protective sleeve 2 33 between wherein said upper sliding sleeve 31 and upper packing element 34, between upper packing element 34 and upper end cover 37, be provided with protective sleeve 1; Be provided with lower protective sleeve 1 between described low sleeve 25 and lower rubber cylinder 20, between lower rubber cylinder 20 and bottom end cover 17, be provided with lower protective sleeve 2 18; Wherein said upper end cover 37 is threaded connection with outer tubing string 5, and described upper end cover 37 is sealed with outer tubing string 5, upper center tube 4 respectively by O-ring seal; Described upper end cover 37 is provided with the air admission hole 2 aiming at gap between outer tubing string 5 and upper center tube 4, and described upper end cover 37 is provided with suspension ring; Described bottom end cover 17 is threaded connection outer tubing string 5, and described bottom end cover 17 is sealed with outer tubing string 5, lower center tube 12 respectively by O-ring seal.
External tubing and casing pneumatic sealing test device of the present utility model, tubing string upper end is threaded connection upper end cover outside, upper end cover is provided with through hole, detection gas is passed into pick-up unit by this through hole, for the air-leakage test to tubing and casing, tubing string lower end is connected with bottom end cover outside, this bottom end cover can the outer gap between tubing string and lower center tube of shutoff, make outer tubing string and upper, can be formed between lower center tube can the cavity of gas storage, upper, side opening is furnished with outside lower center tube, be convenient to outer tubing string and upper, on gas between lower center tube flows into, in the plunger shaft that low sleeve is formed, gap is had between upper sliding sleeve and upper center tube, gap is had between low sleeve and lower center tube, after gases at high pressure enter, upper sliding sleeve can only move to upper end cover direction, low sleeve can only move to bottom end cover direction, upper packing element is had above upper sliding sleeve, thus upper sliding sleeve can promote packing element, make it to set after compression is fitted with tubing and casing outer wall, simultaneously, lower rubber cylinder is had below low sleeve, thus low sleeve can promote lower rubber cylinder, make it to set after compression is fitted with tubing and casing outer wall, make the space that between packing element and lower rubber cylinder, formation one is airtight, this space is just in time positioned at the box cupling place of tubing and casing, thus by detecting the gas at tubing and casing this box cupling place inner, judge the gas tightness of tubing and casing.A kind of external tubing and casing of the utility model pneumatic sealing test apparatus structure is simple, cost is lower, it is precisely higher to detect, after being detected by the gas tightness of this device to tubing and casing screw thread, according to testing result, can rectify and improve for the screw thread of poor sealing, for judging that tubing and casing gas sealing ability provides a kind of detection approach newly more accurately, guarantee the safety in natural petroleum gas field exploration process, do not limit by size because whole device is positioned at tubing and casing outside, be therefore particularly suitable for the gas tightness detecting small size tubing and casing.Wherein, upper end cover and outer tubing string are threaded connection, be provided with O RunddichtringO outside upper end cover simultaneously, , prevent from detecting gas from the slot leakage between upper end cover and outer tubing string, O RunddichtringO is provided with inside upper end cover, prevent from detecting gas from the slot leakage between upper end cover and upper center tube, upper end cover there is air admission hole, air admission hole upper end is shaped with pipe thread, be connected with feeder, upper end cover is connected by square thread with suspension ring, bear the gravity of whole pick-up unit, bottom end cover and outer tubing string are threaded connection, can the outer gap between tubing string and lower center tube of shutoff, be provided with O RunddichtringO outside bottom end cover simultaneously, prevent from detecting gas from the slot leakage between upper end cover and outer tubing string, O RunddichtringO is provided with inside upper end cover, prevent from detecting gas from the slot leakage between upper end cover and upper center tube.
As shown in Figure 1 to Figure 3, the detection method of external tubing and casing pneumatic sealing test device of the present utility model, comprises the following steps:
Step 1, pick-up unit is placed on the outside of tubing and casing to be detected, and make gas admittance valve 10, joint hoop 28 that air outlet valve 26 aligns outside tubing and casing;
Step 2, send into gap between upper center tube 4 and outer tubing string 5 by detecting gas from air admission hole 2, and enter the gap between upper sliding sleeve 31 and upper center tube 4 through the side opening of upper center tube 4; Increase along with gas increases air pressure, detection gas push upper sliding sleeve 31 and protective sleeve 1 move to upper end cover 37 direction, make protective sleeve 1 and upper protective sleeve 2 35 extrude packing element 34 simultaneously, and upper packing element 34 is realized setting with tubing and casing wall contacts by compression; Detect gas push low sleeve 25 protective sleeve 1 to move to bottom end cover 17 simultaneously, make lower protective sleeve 1 extrude lower rubber cylinder 20 with lower protective sleeve 2 20 simultaneously, lower rubber cylinder 20 is realized setting with tubing and casing contact internal walls by compression, and forms ring seal space between tubing and casing outer wall and pick-up unit inwall;
Step 3, continue in air admission hole 2 feed detect gas, detect gas through the gap between outer tube 5 and upper center tube 4, between outer tube 5 and lower center tube 12; When pressure reaches certain value, gas admittance valve 10 is opened, and detection gas flow into the annular sealed space between tubing and casing outer wall and pick-up unit inwall through gas admittance valve 10;
Step 4, bind round 28 places at the joint of tubing and casing inside and be provided with gas detecting instrument, tubing and casing inwall gas is detected, whether leak judge tubing and casing impermeability by detecting gas;
After step 5, detection terminate, discharge the detection gas between outer tubing string 5 and upper sliding sleeve 31, between outer tubing string 5 and low sleeve 25, now gas admittance valve 10 cuts out, and air outlet valve 26 is opened; Detection gas enters the gap between outer tubing string 5 and upper center tube 4, between lower center tube 12 through air outlet valve 26, is reclaimed, now packing element deblocking by air intake opening 2 delivery detection device, and pick-up unit recovers original operating state; And pick-up unit takes out from tubing and casing outside.
External tubing and casing pneumatic sealing test device of the present utility model, structure is simple, lightweight, cost is low, be convenient to transport, and detection method is simple to operate, highly sensitive, reliable operation, good stability, effectively can reject the tubing and casing of leakage; Be placed in oil casing collar outside during work, use gas detecting instrument to detect tubing and casing inwall gas, whether leaked by detection gas and judge tubing and casing impermeability, efficiently solve small size tubing and casing pneumatic sealing test problem.External tubing and casing pneumatic sealing test device of the present utility model and detection method, for more accurately judging that tubing and casing gas sealing ability provides a kind of detection approach newly, guarantee the safety in natural petroleum gas field exploration process, do not limit by size because whole device is positioned at tubing and casing outside, be therefore particularly suitable for the gas tightness detecting small size tubing and casing.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (5)
1. an external tubing and casing pneumatic sealing test device, is characterized in that: comprise outer tubing string (5), and the upper and lower side of described outer tubing string (5) arranges upper end cover (37) and bottom end cover (17) respectively; Upper center tube (4), valve seat (9) and lower center tube (12) is provided with in described outer tubing string (5), described upper center tube (4) connects lower center tube (12) by valve seat (9), wherein upper center tube (4) and the sidewall of lower center tube (12) is equipped with side opening; Described upper center tube (4) inner side is provided with corresponding with its side opening, and can the upper sliding sleeve (31) of relative sliding, is configured with telescopic upper packing element (34) between described upper sliding sleeve (31) and upper end cover (37); Described lower center tube (12) inner side is provided with corresponding with its side opening, and can the low sleeve (25) of relative sliding, is configured with telescopic lower rubber cylinder (20) between described low sleeve (25) and bottom end cover (17).
2. external tubing and casing pneumatic sealing test device as claimed in claim 1, it is characterized in that: described upper sliding sleeve (31) is matched with the side opening position of upper center tube (4) inwall, described upper sliding sleeve (31) is provided with O-ring seal with the mating surface of upper center tube (4), when making air feed in upper center tube (4) upper-side hole, described upper sliding sleeve (31) can slide relative to upper center tube (4) and form motive seal; Described low sleeve (25) is matched with the side opening position of lower center tube (12) inwall, described low sleeve (25) and lower center tube (12) mating surface are provided with O-ring seal, when making lower center tube (12) upper-side hole air feed, described low sleeve (25) can slide relative to lower center tube (12) and form motive seal.
3. external tubing and casing pneumatic sealing test device as claimed in claim 1 or 2, is characterized in that: described valve seat (9) is furnished with the relative gas admittance valve in position (10) and air outlet valve (26); Wherein gas admittance valve (10) and air outlet valve (26) are positioned at the circumferentially same of valve seat (9), and spaced 180 ° of layouts; The upper and lower end of described valve seat (9) is threadedly connected to upper center tube (4) lower end, lower center tube (12) upper end respectively, and is respectively equipped with O-ring seal at valve seat (9) and upper center tube (4), valve seat (9) with the junction of lower center tube (12).
4. external tubing and casing pneumatic sealing test device as claimed in claim 3, it is characterized in that: between described upper sliding sleeve (31) and upper packing element (34), be provided with protective sleeve two (33), between upper packing element (34) and upper end cover (37), be provided with upper protective sleeve one (35); Be provided with lower protective sleeve one (21) between described low sleeve (25) and lower rubber cylinder (20), between lower rubber cylinder (20) and bottom end cover (17), be provided with lower protective sleeve two (18).
5. external tubing and casing pneumatic sealing test device as claimed in claim 4, it is characterized in that: described upper end cover (37) and outer tubing string (5) are threaded connection, described upper end cover (37) is sealed with outer tubing string (5), upper center tube (4) respectively by O-ring seal; Described upper end cover (37) is provided with the air admission hole (2) aiming at gap between outer tubing string (5) and upper center tube (4), and described upper end cover (37) is provided with suspension ring; Described bottom end cover (17) is threaded connection outer tubing string (5), and described bottom end cover (17) is sealed with outer tubing string (5), lower center tube (12) respectively by O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247826.8U CN204535932U (en) | 2015-04-22 | 2015-04-22 | A kind of external tubing and casing pneumatic sealing test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247826.8U CN204535932U (en) | 2015-04-22 | 2015-04-22 | A kind of external tubing and casing pneumatic sealing test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204535932U true CN204535932U (en) | 2015-08-05 |
Family
ID=53749921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520247826.8U Withdrawn - After Issue CN204535932U (en) | 2015-04-22 | 2015-04-22 | A kind of external tubing and casing pneumatic sealing test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204535932U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402662A (en) * | 2016-11-29 | 2017-02-15 | 西南石油大学 | Pipeline fluid leak detection device |
| CN104764566B (en) * | 2015-04-22 | 2017-07-28 | 西南石油大学 | A kind of external tubing and casing pneumatic sealing test device and detection method |
| CN108195528A (en) * | 2018-01-04 | 2018-06-22 | 中广核核电运营有限公司 | The airtight test structure of generator outlet casing and system |
-
2015
- 2015-04-22 CN CN201520247826.8U patent/CN204535932U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764566B (en) * | 2015-04-22 | 2017-07-28 | 西南石油大学 | A kind of external tubing and casing pneumatic sealing test device and detection method |
| CN106402662A (en) * | 2016-11-29 | 2017-02-15 | 西南石油大学 | Pipeline fluid leak detection device |
| CN106402662B (en) * | 2016-11-29 | 2019-02-15 | 西南石油大学 | A kind of pipeline fluid leak detecting device |
| CN108195528A (en) * | 2018-01-04 | 2018-06-22 | 中广核核电运营有限公司 | The airtight test structure of generator outlet casing and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104764566A (en) | Built-out type oil casing air-tight seal detection device and detection method | |
| CN103234712B (en) | Oil bushing air-tightness detection device and oil bushing air-tightness detection method | |
| CN204535932U (en) | A kind of external tubing and casing pneumatic sealing test device | |
| CN202182801U (en) | Clamp for checking air tightness of pipelines | |
| CN203476280U (en) | Improved oil sleeve gas tightness detection packer | |
| CN101696898B (en) | Leak detection tool for high-pressure blocking-sealing gas injection | |
| CN101824999A (en) | Technology for measuring gas pressure of coal bed by utilizing through beds hole | |
| CN103994863A (en) | Air-tight sealing detection method of threaded connection of oil casing tubes | |
| CN106337951B (en) | The changeable pressure water valve device of the double embolism formula high-pressure high-flows of gun drilling and test method | |
| CN103216209B (en) | Packer in tubing and casing sealing propertytest pipe | |
| CN105319020A (en) | Jacket-type oil casing air tightness detection device and detection method | |
| CN103994865A (en) | Air-tight sealing detection apparatus of threaded connection of oil casing tubes | |
| CN202946094U (en) | Double-power-source packer for air-tight seal detection of oil sleeve | |
| CN104100293B (en) | Mash gas pumping drilling leak detection and leak stopping integrated apparatus and method | |
| CN105715228B (en) | A kind of single tube gasbag-type gas drilling hole sealing device | |
| CN103743304B (en) | Demolition set | |
| CN110206495B (en) | Oil casing pipe thread-buckle connection air tightness detection packer | |
| CN104075860A (en) | Detection tool for threaded connection air seal and detection method | |
| CN201532295U (en) | High pressure clamping seal gas injection leakage checking tool with anti-jumping function | |
| CN206130193U (en) | Large -traffic changeable pressurized -water valve gear of two embolism formula high pressure of gun drilling | |
| CN105604517A (en) | Casing pipe patching relay type cement paste replacement device | |
| CN203241203U (en) | A detecting apparatus of the threaded connection hermetic seal of an oil casing | |
| CN204330243U (en) | A kind of borehole sealing pick-up unit | |
| CN204788838U (en) | Utilize search gas to judge device of fender degree of leaking out | |
| CN103940307B (en) | A kind of blasting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150805 Effective date of abandoning: 20170728 |
|
| AV01 | Patent right actively abandoned |