CN221002691U - Hanger with pressure test structure - Google Patents
Hanger with pressure test structure Download PDFInfo
- Publication number
- CN221002691U CN221002691U CN202322908396.7U CN202322908396U CN221002691U CN 221002691 U CN221002691 U CN 221002691U CN 202322908396 U CN202322908396 U CN 202322908396U CN 221002691 U CN221002691 U CN 221002691U
- Authority
- CN
- China
- Prior art keywords
- hole
- connector
- hanger
- section
- pressure test
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 83
- 230000000149 penetrating effect Effects 0.000 claims abstract description 25
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 239000013013 elastic material Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000010985 leather Substances 0.000 description 11
- 101150038956 cup-4 gene Proteins 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 238000012856 packing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a hanger with a pressure test structure, comprising: the body comprises a first through hole penetrating through the body in the axial direction and a penetrating hole, and the penetrating hole is positioned at the periphery of the first through hole; the connector comprises a second through hole penetrating through the connector in the axial direction and a third through hole penetrating through the connector to the second through hole along the radial direction; one axial end of the connector is connected to the first through hole, and the other axial end of the connector is used for connecting a lifting pipe column; a blocking piece is arranged in the second through hole and is blocked between the third through hole and the first through hole; the sealing cover is connected to one end of the body, which is close to the lifting pipe column, so that the sealing cover penetrates through the hole. The sealing cover is fixed in shape and is not easy to generate fatigue effect, so that the sealing performance is more stable, and the sealing cover is generally made of rigid materials, and compared with a rubber cylinder made of elastic materials, the sealing cover is better in high-pressure resistance and wear resistance.
Description
Technical Field
The utility model relates to the technical field of wellhead pressure testing devices in petroleum industry, in particular to a hanger with a pressure testing structure.
Background
The wellhead hanger for offshore oil field oil-gas-water well production has several through holes, through which various pipelines, capillary tubes and cables are connected to ground. The blowout preventer is a key device for ensuring well control safety, and all joints are tested according to the standard, and high and low pressures are qualified. Because various traversing cables and pipelines arranged in the traversing hole can only bear the pressure of 5-9MPa, and various pipelines can be impacted to the underground due to the overhigh pressure, when the blowout preventer is tested, a wellhead pressure testing device is required to be connected to a hanger to isolate the traversing hole from the pressure testing space of the blowout preventer.
The utility model discloses a wellhead pressure testing device of an oil-water well blowout preventer stack, which is characterized in that a coupling is fastened by downwards rotating a pipe wrench during pressure testing operation, and meanwhile, a pressure testing blocking head is lifted up, and a pressure sleeve and a rubber cylinder are jointly extruded, so that the rubber cylinder is elastically deformed to form a seal between the pressure sleeve and a sleeve four-way of the wellhead, and high-pressure liquid in the blowout preventer is prevented from impacting various pipelines in a penetrating hole of a hanger.
The existing wellhead pressure testing device of the oil-water well blowout preventer stack can pass through Kong Gejue outside the pressure testing space of the blowout preventer, but the following problems are necessarily caused as the use times of the wellhead pressure testing device are increased:
1. The repeated compression rebound of the rubber cylinder produces a fatigue effect, so that the sealing effect is poor.
2. When pressure test, the drilling fluid of high pressure directly acts on the packing element surface, and impurity in the drilling fluid causes wearing and tearing to the packing element, and the packing element is damaged easily under the high pressure environment, leads to sealed effect variation.
Disclosure of utility model
The utility model aims to provide a hanger with a pressure test structure, which has good sealing effect and is not easy to damage during pressure test operation of a blowout preventer.
The utility model provides a hanger with a pressure test structure, comprising: the body comprises a first through hole penetrating through the body in the axial direction and a penetrating hole, and the penetrating hole is positioned at the periphery of the first through hole; the connector comprises a second through hole penetrating through the connector in the axial direction and a third through hole penetrating through the connector to the second through hole along the radial direction; one axial end of the connector is connected to the first through hole, and the other axial end of the connector is used for connecting a lifting pipe column; a blocking piece is arranged in the second through hole and is blocked between the third through hole and the first through hole; the sealing cover is connected to one end of the body, which is close to the lifting pipe column, so that the sealing cover penetrates through the hole.
In one embodiment, the body comprises a first extension section and a second extension section which are sequentially arranged along the axial direction of the body, and the outer diameter of the first extension section is smaller than that of the second extension section; the through hole is positioned on the second extension section and positioned at the periphery of the first extension section; the sealing cover comprises an annular sealing cover, and the annular sealing cover comprises a first connecting section and a second connecting section which are sequentially arranged; the first connecting section surrounds the periphery of the first extending section in a sealing way, the second connecting section surrounds the periphery of the second extending section in a sealing way, so that a sealing space is formed between the body and the annular sealing cover, and one end penetrating through the hole is communicated with the sealing space.
In one embodiment, the annular seal cover further comprises a third connecting section located above the first extending section and sealingly connected to the outer periphery of the connecting head.
In one embodiment, the hanger further comprises: the elastic sealing piece surrounds the periphery of the connector; the two axial ends of the elastic sealing piece are respectively abutted against the outer peripheral surface of the connecting joint and the top surface of the annular sealing cover; under the action of force, the two axial ends of the elastic sealing piece are respectively pressed against the outer peripheral surface of the connector and the top surface of the annular sealing cover.
In one embodiment, the hanger further comprises: and the fixing piece is used for fixing the elastic sealing piece on the periphery of the first extension section.
In one embodiment, the hanger further comprises: a first seal is sealingly disposed between the first connecting section and the first extension section.
In one embodiment, the hanger further comprises: and the second sealing piece surrounds the periphery of the second extension section.
In one embodiment, the annular seal cap is chamfered at an end remote from the body.
In one embodiment, at least two third through holes are provided, and at least two third through holes are uniformly provided along the circumferential direction of the second through hole.
In one embodiment, a third seal is also provided between the second connecting section and the second extension section.
Compared with the prior art, the utility model has the advantages that when the blowout preventer is used for pressure test, the traversing pipeline in the traversing hole is cut off from the upper end of the traversing hole, and then the blowout preventer is installed in place. Injecting liquid into the second through hole through the lifting pipe column, and because the lower part of the first through hole is blocked by the blocking piece, high-pressure liquid cannot flow into the first through hole and enters a pressure test space between the hanger and the blowout preventer from the third through hole; and the sealing cover is connected to one end of the body, which is close to the lifting pipe column, and covers the passing hole so that the passing hole and the pressure test space are not communicated with each other, and the high-pressure liquid can be prevented from acting on the passing pipeline to impact the passing pipeline to the underground. Compared with a rubber cylinder for sealing a through hole in the prior art, the sealing cover is not easy to generate fatigue effect due to fixed form, so that the sealing performance is more stable, the sealing cover is generally made of rigid materials, and compared with the rubber cylinder made of elastic materials, the sealing cover is better in high-pressure resistance and wear resistance.
Drawings
The utility model will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.
FIG. 1 is an axial cross-sectional view of a hanger with pressure test structure in an embodiment of the present utility model.
Reference numerals:
1. A connector; 101. a second through hole; 102. a third through hole; 103. a first external thread segment; 13. plugging; 2. a tube wall; 3. a first seal ring; 4. a pressure-bearing leather cup; 5. locking nails; 6. sealing cover; 61. a first connection section; 611. a fourth internal thread segment; 62. a second connection section; 621. a fifth internal thread segment; 63. a third connecting section; 631. a third internal thread segment; 7. a second seal ring; 8. a body; 801. a first through hole; 8011. a first internal thread segment; 802. penetrating the hole; 81. a first extension; 811. a second external thread segment; 82. a second extension; 821. a first portion; 8211. a third external thread segment; 822. a second portion.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
Referring to fig. 1, the present embodiment discloses a hanger with a pressure test structure, comprising: the connector 1, the sealing cover 6, the body 8 and the plug 13. The body 8 includes a first through hole 801 penetrating through its axial direction and a penetrating hole 802, the penetrating hole 802 being located at the outer periphery of the first through hole 801; the upper portion of the first through hole 801 is provided with a first female thread section 8011; the connector 1 comprises a second through hole 101 penetrating through the axial direction of the connector and a third through hole 102 penetrating through the pipe wall 2 of the connector along the radial direction of the connector and communicated with the second through hole 101; a first external thread section 103 is arranged at one axial end of the connector 1, and the first external thread section 103 is in threaded connection with a first internal thread section 8011; the other axial end of the connector 1 is provided with a second internal thread section on the second through hole 101, and the second internal thread section is used for being in threaded connection with a lifting pipe column; the seal cap 6 is attached to the body 8 at an end adjacent the riser string to cover the through hole 802. The plug 13 is screwed to an end of the second through hole 101 communicating with the first through hole 801 to shut off a liquid passage from the third through hole 102 to the first through hole 801. The plug 13 is a closure of the present utility model.
Further, the body 8 includes a first extension section 81 and a second extension section 82 disposed in order along an axial direction thereof, an outer diameter of the first extension section 81 being smaller than an outer diameter of the second extension section 82; the first through hole 801 penetrates through the first extension section 81 and the second extension section 82 in sequence along the axial direction of the body 8; the through holes 802 are located at the periphery of the first extension section 81 and penetrate through the second extension section 82 along the axial direction of the body 8, and at least two through holes 802 uniformly encircle the periphery of the first through hole 801. The second extension 82 includes a first portion 821 and a second portion 822 sequentially disposed in an axial direction thereof, wherein an outer diameter of the first portion 821 is larger than an outer diameter of the first extension 81 and smaller than an outer diameter of the second portion 822; the outer circumference of the first extension section 81 is provided with a second external thread section 811 and the outer circumference of the first portion 821 is provided with a third external thread section 8211.
Further, the sealing cover 6 is an annular sealing cover, and the annular sealing cover comprises a third connecting section 63, a first connecting section 61 and a second connecting section 62 which are sequentially arranged along the axial direction of the annular sealing cover; wherein, the inner circumference of the third connecting section 63 is provided with a third internal thread section 631, the third internal thread section 631 is in threaded connection with the first external thread section 103, the inner circumference of the first connecting section 61 is provided with a fourth internal thread section 611, and the fourth internal thread section 611 is in threaded connection with the second external thread section 811; the second connecting section 62 is provided with a fifth female screw section 621 at the inner periphery thereof, the fifth female screw section 621 being screw-coupled with a third male screw section 8211; the bottom surface of the third connecting section 63 abuts against the top surface of the first extending section 81, and an annular sealing space is formed between the bottom surface of the second connecting section 62 and the top surface of the first portion 821; the above-mentioned sealing space surrounds the outer periphery of the first extension section 81 and is sealed by the first extension section 81 and the second connection section 62 on both radial sides of the body 8. After the sealing cover 6 is connected with the body 8 in a sealing way, the top opening of the penetrating hole 802 is communicated with the sealing space.
Further, the outer circumference of the first male screw section 103 is in a truncated cone shape, and the inner portions Zhou Jun of the first female screw section 8011 and the third female screw section 631 are configured in a truncated cone-shaped structure matched with each other.
Further, in order to improve the sealing performance of the hanger with the pressure test structure in the present embodiment, a plurality of seals are provided in the present embodiment. The method specifically comprises the following steps: three first seal rings 3 disposed between the fourth female screw section 611 and the second male screw section 811; three second sealing rings 7 arranged on the periphery of the second extension section 82; the inner peripheral surfaces of the two axial ends of the pressure-bearing leather cup 4 are respectively abutted against the outer peripheral surface of the joint 1 and the top surface of the sealing cover 6, and the pressure-bearing leather cup 4 seals a joint between the joint 1 and the sealing cover 6; the pressure-bearing leather cup 4 is arranged on the periphery of the connector 1 through the locking nails 5, and once the pressure-bearing leather cup 4 is broken, the locking nails 5 can be detached for replacement. Under the action of hydraulic pressure, the two axial ends of the pressure-bearing leather cup 4 are respectively pressed against the outer peripheral surface of the connector 1 and the top surface of the sealing cover 6, the pressure-bearing leather cup 4 is elastically deformed, and the extending middle part of the pressure-bearing leather cup is tightly attached to the joint. The first sealing ring 3 is a first sealing element of the utility model; the second sealing ring 7 is a second sealing element of the utility model; the pressure bearing leather cup 4 is an elastic sealing element of the utility model. The locking pin 5 is a fixing element of the utility model.
In some embodiments, the first sealing ring 3 may be provided in one or more ways.
In some embodiments, the second sealing ring 7 may be provided in one or more ways.
Further, the top of the third connecting section 63 is chamfered, and scraping is prevented during the lifting process.
Further, at least two third through holes 102 are provided, and at least two third through holes 102 are uniformly provided along the circumferential direction of the second through hole.
In some embodiments, a third seal is also provided between the second connecting section 62 and the second extension section 82.
In some embodiments, the bottom of the second portion 822 is chamfered.
When the well completion operation is carried out, the connector 1, the sealing cover 6 and the body 8 are separated, the body 8 is independently used and arranged in the sleeve four-way joint, and the second sealing ring 7 is sealed between the body 8 and the inner wall of the sleeve four-way joint. After various pipelines and cables pass through the pass-through holes 802, a pressing cap is arranged, and then the sitting hanger and the subsequent construction can be carried out. When the blowout preventer is used for pressure test operation, firstly, the wellhead christmas tree is dismantled, at this moment, the safety valve, the exhaust valve and the annular safety wind in the well are all in the closed state, the well control state is safe, various traversing pipelines and cables on the upper part of the body 8 are cut off completely, the sealing cover 6 is installed on the upper part of the body 8, the second connecting section 62 is in threaded connection with the first part 821 and is tightly screwed up to ensure sealing, the inner first sealing ring 3 and the pressure-bearing leather cup 4 which are positioned on the upper part of the body 8 play a role of reinforcing sealing, the sealing effect of the sealing space is connected, the pressure-bearing leather cup 4 can cover the joint sealing between the connector 1 and the sealing cover 6, the blowout preventer stack is installed, the lifting pipe column is connected with the connector 1, the blowout preventer is closed, high-pressure liquid is injected into the second through hole 101 by the lifting pipe column, the liquid can not flow downwards due to the effect of the plug 13, and the high-pressure liquid outwards flows out into the blowout preventer by the third through hole 102, so that the sealing cover 4 is tightly pressed against the upper end of the sealing cover 6, at this moment, the secondary sealing is realized, the sealing of the traversing holes 802 and the inner pipelines and the cables are not subjected to high pressure. After the pressure test is completed and the pressure relief is completed, the pipe column can be lifted up for subsequent operation.
In conclusion, when the hanger with the pressure test structure is used for pressure test operation of the blowout preventer, the high pressure test operation of the blowout preventer can be performed without moving a pipe column, well control risks are avoided, and operation safety is ensured.
While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. A hanger with pressure test structure, comprising:
The body comprises a first through hole penetrating through the axial direction of the body and a penetrating hole, wherein the penetrating hole is positioned at the periphery of the first through hole;
the connector comprises a second through hole penetrating through the connector in the axial direction and a third through hole penetrating through the connector to the second through hole along the radial direction; one axial end of the connector is connected to the first through hole, and the other axial end of the connector is used for connecting a lifting pipe column; a blocking piece is arranged in the second through hole and is blocked between the third through hole and the first through hole;
And the sealing cover is connected to one end of the body, which is close to the lifting pipe column, so as to cover the through hole.
2. The hanger with pressure test structure of claim 1, wherein:
The body comprises a first extension section and a second extension section which are sequentially arranged along the axial direction of the body, and the outer diameter of the first extension section is smaller than that of the second extension section; the through hole is positioned on the second extension section and positioned at the periphery of the first extension section;
the sealing cover comprises an annular sealing cover, and the annular sealing cover comprises a first connecting section and a second connecting section which are sequentially arranged;
The first connecting section is in the periphery of the first extending section in a sealing mode, the second connecting section is in the periphery of the second extending section in a sealing mode, so that a sealing space is formed between the body and the annular sealing cover, and one end of the penetrating hole is communicated with the sealing space.
3. The hanger with pressure test structure of claim 2 wherein said annular seal cap further comprises a third connecting section located above said first extension section and sealingly connected to the outer periphery of said connector.
4. A hanger with pressure test structure according to claim 2 or 3, further comprising:
An elastic sealing member surrounding an outer periphery of the joint; the two axial ends of the elastic sealing piece are respectively abutted against the outer peripheral surface of the connector and the top surface of the annular sealing cover;
under the action of force, the two axial ends of the elastic sealing piece are respectively pressed against the outer peripheral surface of the connector and the top surface of the annular sealing cover.
5. The hanger with pressure test structure of claim 4, further comprising:
and the fixing piece is used for fixing the elastic sealing piece on the periphery of the first extension section.
6. A hanger with pressure test structure according to claim 2 or 3, further comprising:
A first seal is sealingly disposed between the first connecting segment and the first extension segment.
7. A hanger with pressure test structure according to claim 2 or 3, further comprising:
And a second seal surrounding the outer periphery of the second extension section.
8. A hanger with pressure test structure according to claim 2 or 3, wherein said annular seal is chamfered at an end thereof remote from said body.
9. A hanger with a pressure test structure according to any one of claims 1 to 3, wherein at least two of said third through holes are provided, and at least two of said third through holes are uniformly provided along a circumferential direction of said second through hole.
10. A hanger with pressure test structure according to claim 2 or 3, characterized in that:
A third seal is also provided between the second connecting section and the second extension section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322908396.7U CN221002691U (en) | 2023-10-27 | 2023-10-27 | Hanger with pressure test structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322908396.7U CN221002691U (en) | 2023-10-27 | 2023-10-27 | Hanger with pressure test structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221002691U true CN221002691U (en) | 2024-05-24 |
Family
ID=91089017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322908396.7U Active CN221002691U (en) | 2023-10-27 | 2023-10-27 | Hanger with pressure test structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221002691U (en) |
-
2023
- 2023-10-27 CN CN202322908396.7U patent/CN221002691U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207017968U (en) | Oil well head annular space sealing device | |
| CN107143298A (en) | Oil well head annular space sealing device | |
| US8499842B2 (en) | Dual barrier plug system for a wellhead | |
| WO2019191041A2 (en) | Remotely operated fluid connection and seal | |
| CN206830123U (en) | A kind of HTHP packer of band elasticity deblocking ratchet and balance bypass | |
| CN206888951U (en) | Low twisted plug valve and interior blowout hookup | |
| CN109555492A (en) | Shaft bottom annular space drilling fluid dropping equipment and method based on drillstring vibrations | |
| US7267179B1 (en) | Method for rapid installation of a smaller diameter pressure control device usable on blow out preventers | |
| CN203879441U (en) | Jackscrew assembly structure for well head device | |
| CN221002691U (en) | Hanger with pressure test structure | |
| CN204371215U (en) | TUBE IN DEEP WELL blanking plug | |
| RU65104U1 (en) | CONNECTION OF PROFILE PIPES OF WELL OVERLAPPERS | |
| US11353131B2 (en) | Gate valve bonnet connector | |
| CN109441393A (en) | Plunger Lift oil/gas well wellhead assembly and Plunger Lift oil/gas well | |
| CN104963649A (en) | Embedded sealing and isolating sealed casing head | |
| CN101839117A (en) | Annulus safety valve | |
| US4617823A (en) | Hydro pressure thread tester | |
| CN105201443B (en) | A kind of blanking plug in oil pipe launched for steel wire | |
| CN113090226B (en) | Bridge plug control switch | |
| CN105221101A (en) | Test cover and leak packer | |
| CN207420528U (en) | A kind of new oil tube head conversion connector | |
| CN2926489Y (en) | Underwell safety valve | |
| RU12702U1 (en) | DEVICE FOR TESTING A WELL MOUTH | |
| CN205778688U (en) | Fire-burning huff-puff/fireflood well casing head | |
| US1961762A (en) | Rotary drill pipe collar or coupling with sealed joints |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |