CN210598908U - Special packer for detecting air tightness of sleeve - Google Patents
Special packer for detecting air tightness of sleeve Download PDFInfo
- Publication number
- CN210598908U CN210598908U CN201921715332.2U CN201921715332U CN210598908U CN 210598908 U CN210598908 U CN 210598908U CN 201921715332 U CN201921715332 U CN 201921715332U CN 210598908 U CN210598908 U CN 210598908U
- Authority
- CN
- China
- Prior art keywords
- pressure testing
- pressure
- packer
- packing element
- sleeve pipe
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims abstract description 11
- 210000004907 gland Anatomy 0.000 claims abstract description 4
- 125000006850 spacer group Chemical group 0.000 claims abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 5
- 230000005465 channeling Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- UDWPONKAYSRBTJ-UHFFFAOYSA-N [He].[N] Chemical compound [He].[N] UDWPONKAYSRBTJ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a special packer of casing pipe gas tightness detection contains one and hangs the joint, one goes up to press the cap, one rights cover and a pressure testing sleeve pipe, last pressure cap on be equipped with an inlet connection, pressure testing sheathed tube one end be equipped with and be equipped with a pair of right packing element, the sheathed tube other end of pressure testing be equipped with and be equipped with a pair of left packing element, right packing element between and be equipped with a spacer ring between the left packing element respectively, pressure testing sheathed tube inside be equipped with one go up center tube, a right piston, a left piston, a right cylinder liner and a left cylinder liner, pressure testing sheathed tube center be equipped with a main part, an air outlet valve and an admission valve, air outlet valve and admission valve between be equipped with a gland, pressure testing sheathed tube afterbody be equipped with an end cap, pressure testing sheathed tube outside be equipped with a pressure gauge and a pressure sensor. The utility model discloses a packer prevents that gas from discharging safe and reliable from the packing element when the packer deblocking.
Description
Technical Field
The utility model relates to an oil production equipment, more precisely, be a special packer of sleeve pipe gas tightness detection.
Background
At present, the domestic packer for detecting the air tightness of the casing pipe has no mature setting product, and the packer can generate a gas channeling phenomenon in the detection process: the packer is at the deblocking in-process, if gaseous from the packing element discharge down, the phenomenon can appear scurrying near the well head in the middle of the way grout liquid level, touches the loose pulley coaster even, causes the accident. If gas is discharged from the upper rubber sleeve, the packer can generate a down-stroke phenomenon, even the winch can seriously shake (pull and turn over), and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the technical problem that prior art exists to a special packer is detected to sleeve pipe gas tightness is provided.
The above technical problem of the present invention can be solved by the following technical solutions:
a special packer for detecting the air tightness of a casing is characterized by comprising a suspension joint, an upper pressing cap, a righting sleeve and a pressure test casing, the upper pressure cap is provided with an air inlet joint, one end of the pressure test sleeve is provided with a pair of right rubber cylinders, the other end of the pressure test sleeve is provided with a pair of left rubber cylinders, a spacing ring is respectively arranged between the right rubber cylinders and between the left rubber cylinders, the pressure test sleeve is internally provided with an upper central tube, a lower central tube, a right piston, a left piston, a right cylinder sleeve and a left cylinder sleeve, the center of the pressure test sleeve is provided with a main body, an air outlet valve and an inlet valve, a gland is arranged between the air outlet valve and the inlet valve, the tail of the pressure test sleeve is provided with a lower plug, and the outside of the pressure test sleeve is provided with a pressure gauge and a pressure sensor.
The utility model discloses a special packer of sleeve pipe gas tightness detection has following advantage: the utility model discloses a packer reaches and prevents packer "gas channeling phenomenon" to the optimization of each part. When the packer is unsealed, gas is prevented from being discharged from the rubber sleeve, and the packer is safe and reliable. The detection speed is greatly improved while the gas consumption is saved, and the performance of the rubber cylinder is continuously improved, tested and screened for many times, so that the rubber cylinder does not need to be replaced in the process of one well casing detection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the utility model discloses a special packer of sleeve pipe gas tightness detection's schematic structure diagram.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.
As shown in figure 1, the special packer for detecting the air tightness of the casing comprises a suspension joint 1, an upper pressure cap 3, a centralizing sleeve 4 and a pressure test casing 5, the upper pressure cap 3 is provided with an air inlet connector 2, one end of the pressure test sleeve 5 is provided with a pair of right rubber cylinders 6, the other end of the pressure test sleeve 5 is provided with a pair of left rubber cylinders 19, a spacing ring 7 is respectively arranged between the right rubber cylinders 6 and between the left rubber cylinders 19, the pressure test sleeve 5 is internally provided with an upper central tube 8, a lower central tube 18, a right piston 9, a left piston 17, a right cylinder sleeve 10 and a left cylinder sleeve 16, the pressure test sleeve 5 is provided with a main body 11, an air outlet valve 12 and an air inlet valve 15 at the center, a gland 14 is arranged between the air outlet valve 12 and the air inlet valve 15, a lower plug 20 is arranged at the tail part of the pressure test sleeve 5, and a pressure gauge 13 and a pressure sensor 21 are arranged outside the pressure test sleeve 5.
The test procedure is described below.
Firstly, the packer needs to be tested on site to observe whether gas is discharged from two rubber cylinders. If gas is exhausted from the two rubber cylinders, the test is carried out again to find out the optimal pressure relief speed and reach the minimum exhaust amount. And then, researching and analyzing the two pressure curves to determine whether the work is normal or not, whether the setting and unsealing processes are normal and smooth or not, whether the opening of the air outlet valve 12 and the air inlet valve 15 meets the design requirements or not, and whether the internal pressure of the packer is consistent with the pressure of the closed annulus or not, so as to determine whether the packer meets the requirement of casing air tightness detection or not.
Then, high-pressure helium-nitrogen mixed gas enters the upper central pipe 8 and the lower central pipe 18 through the packer gas inlet 2, and gas is discharged to simultaneously push the right piston 9 and the left piston 17 to operate, so that the right rubber cylinder 6 and the left rubber cylinder 19 are extruded. When the pressure reaches about 7mPa, the right rubber sleeve 6 is set, the pressure is continuously pressed, and when the pressure in the packer reaches the designed pressure (12-18mPa) of the air inlet valve, the air inlet valve 15 is opened, and the gas enters a closed annulus formed by the packer and the sleeve. And continuously pressurizing to the detection pressure (the detection pressure of the technical casing is 35mPa, the detection pressure of the production casing is 60mPa), releasing the pressure, unsealing the packer, and finally taking out the packer from the pressure test casing 5.
The utility model discloses a packer reaches and prevents packer "gas channeling phenomenon" to the optimization of each part. When the packer is unsealed, gas is prevented from being discharged from the rubber sleeve, and the packer is safe and reliable. The detection speed is greatly improved while the gas consumption is saved, and the performance of the rubber cylinder is continuously improved, tested and screened for many times, so that the rubber cylinder does not need to be replaced in the process of one well casing detection.
In addition, the volume of the gas flow channel is reduced, the distance between two rubber cylinders is shortened, and the outer diameter of the packer is increased to reduce the volume of a sealed annular space formed when the packer and a sleeve are set by reducing the inner diameter of the central pipe and properly increasing the outer diameter of the piston. Not only reduce gaseous from packing element emission, reduce the risk that packer gas scurried, can also practice thrift the gas consumption, improve detection speed greatly.
Without being limited thereto, any changes or substitutions which are not thought of through creative efforts should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (1)
1. The utility model provides a special packer of sleeve pipe gas tightness detection, a serial communication port, the special packer of sleeve pipe gas tightness detection contain one and hang joint (1), one go up and press cap (3), one right cover (4) and a pressure testing sleeve pipe (5), last pressure cap (3) on be equipped with one and advance gas connector (2), the one end of pressure testing sleeve pipe (5) be equipped with and be equipped with a pair of right packing element (6), the other end of pressure testing sleeve pipe (5) be equipped with and be equipped with a pair of left packing element (19), right packing element (6) between and be equipped with a spacer ring (7) between left packing element (19) respectively, the inside of pressure testing sleeve pipe (5) be equipped with one and go up center tube (8), center tube (18), a right piston (9), a left piston (17), a right cylinder liner (10) and a left cylinder liner (16), the center of pressure testing sleeve pipe (5) be equipped with a main part (11), An air outlet valve (12) and an admission valve (15), air outlet valve (12) and admission valve (15) between be equipped with a gland (14), the afterbody of pressure testing sleeve pipe (5) be equipped with end cap (20) down, the outside of pressure testing sleeve pipe (5) be equipped with a manometer (13) and a pressure sensor (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921715332.2U CN210598908U (en) | 2019-10-14 | 2019-10-14 | Special packer for detecting air tightness of sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921715332.2U CN210598908U (en) | 2019-10-14 | 2019-10-14 | Special packer for detecting air tightness of sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210598908U true CN210598908U (en) | 2020-05-22 |
Family
ID=70693565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921715332.2U Active CN210598908U (en) | 2019-10-14 | 2019-10-14 | Special packer for detecting air tightness of sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210598908U (en) |
-
2019
- 2019-10-14 CN CN201921715332.2U patent/CN210598908U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108060903A (en) | Coal-bed gas pressure measurement dynamic self-balance pressurization hole sealing device and method | |
| CN209875145U (en) | Oil gas well cement sheath sealing integrity testing arrangement | |
| CN203476280U (en) | Improved oil sleeve gas tightness detection packer | |
| CN104764566B (en) | A kind of external tubing and casing pneumatic sealing test device and detection method | |
| CN105715228B (en) | Single-tube air bag type gas drilling and hole sealing device | |
| CN206146755U (en) | High temperature pressurization section of thick bamboo performance testing device | |
| CN105319020B (en) | Jacket-type oil casing air tightness detection device and detection method | |
| CN103216209B (en) | Packer in tubing and casing sealing propertytest pipe | |
| CN106437610B (en) | A kind of gas pumping secondary hole sealing method based on swelling agent | |
| CN204532254U (en) | A pressure relief switch valve and a pipe string for channeling and leak detection of oil and gas wells | |
| CN203594402U (en) | Oil tube plugging device | |
| CN204535932U (en) | A kind of external tubing and casing pneumatic sealing test device | |
| CN211115941U (en) | Injection-production communicating vessel and injection-production-down-production process pipe column | |
| CN211422585U (en) | A packer with soluble material releasing negative pressure from setting and improving desealing effect | |
| CN204284065U (en) | Sealing locking hydraulic jack | |
| CN203188963U (en) | In-pipe packer for oil drivepipe leakproofness detection | |
| CN206398256U (en) | A kind of Gas Pipe plugging device and Gas Pipe plugging structure | |
| CN106703740A (en) | Hydraulic control and inside and outside biaxial compression packer | |
| CN205422628U (en) | But water inflation packer is met to backwash well | |
| CN204851160U (en) | Self-locking internal compression packer | |
| CN205580674U (en) | Sleeve pipe gas secret nature detection device | |
| CN203175469U (en) | Hydraulic packer | |
| CN205027524U (en) | Open and close valve pressure measurement | |
| CN205135415U (en) | Head is distinguished to water | |
| CN207813568U (en) | A kind of detachable bridge plug |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |