CN202485989U - Underwater well-mouth-head hydrostatic pressure testing device - Google Patents
Underwater well-mouth-head hydrostatic pressure testing device Download PDFInfo
- Publication number
- CN202485989U CN202485989U CN2012201006868U CN201220100686U CN202485989U CN 202485989 U CN202485989 U CN 202485989U CN 2012201006868 U CN2012201006868 U CN 2012201006868U CN 201220100686 U CN201220100686 U CN 201220100686U CN 202485989 U CN202485989 U CN 202485989U
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- hole
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- end cover
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- ring
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Abstract
The utility model relates to an underwater well-mouth-head hydrostatic pressure testing device used in ocean oil-gas exploration. The underwater well-mouth-head hydrostatic pressure testing device comprises a sealing end cover and a sealing core shaft, wherein the sealing end cover is provided with a step through hole, the upper end of the step through hole is provided with a screw hole matched with the core shaft, the upper end of the screw hole is provided with an upper hole shoulder, the lower end of the step through hole is provided with a locking hole matched with the periphery of a well-mouth-head, a ring groove and a movable locking block are arranged inside the locking hole, the upper end of the locking hole is provided with a lower hole shoulder, a thread arranged at the upper end of the sealing core shaft is connected with a screw hole arranged at the upper end of the sealing end cover in a sealing mode, the periphery of the sealing core shaft is matched with a well-mouth-head inner hole, the periphery of the lower end of the sealing core shaft is in sealing arrangement with the well-mouth-head lower inner hole, and a pressure injection hole arranged on the sealing end cover or the sealing core shaft is communicated with a cavity in the middle of the step through hole. The underwater well-mouth-head hydrostatic pressure testing device is simple in structure, reasonable in set, convenient to use and install, high in safety and reliability, long in service life, and repeatable to use.
Description
Technical field
The utility model relates to a kind of body hydrostatic test device that is used for the underwater wellhead of marine oil and gas exploitation, is used for the test of dispatching from the factory of the oral body hydrostatic pressing of strong well.
Background technology
In the marine oil and gas exploitation, the well head head is the crucial pressure-containing member in the subsea wellhead system, sit to be placed in the conductor housing, and be the basis of subsea well.Well head head suspension surface string, string of casing and tubing hanger, and bear external action load, its load performance has directly determined the pressure integrity of oil well.During the drilling well, well connects preventer in word, bears fluid column pressure in the marine riser, will during the preventer pressure testing, bear preventer pressure testing load especially; During the production of hydrocarbons, well connects X-tree in word, bears the pressure of high-pressure oil gas.It is thus clear that the well head head all bears very big inner pressuring load in whole life cycle.Therefore, for guaranteeing the reliability of its use, must verify its pressure-bearing integrality through the hydrostatic pressing test.In the prior art, do not see the report that well head head body hydrostatic test device is arranged at present as yet.
Summary of the invention
The utility model technical matters to be solved is to provide a kind of can being convenient to that underwater wellhead is carried out the hydrostatic test device that hydrostatic pressing is dispatched from the factory and tested.
The utility model is that the technical scheme that problem adopted of the above-mentioned proposition of solution is:
Comprise end cover and sealing mandrel; Described end cover offers ladder hole, and the upper end of ladder hole is provided with the screw with the mandrel phase configuration, and the screw upper end is provided with the hole shoulder; The ladder hole lower end is provided with the locking hole with well head head periphery phase configuration; Offer annular groove in the locking hole, install mobile lock dog in the annular groove, the locking hole upper end is provided with down the hole shoulder; Described sealing mandrel upper end is provided with screw thread and links to each other with the screw sealing of end cover upper end; The periphery and the well head head endoporus phase configuration of sealing mandrel, and the lower end periphery of sealing mandrel and well head head below endoporus seal arrangement, end cover or sealing mandrel are provided with the notes that are connected with the middle cavity of ladder hole and press the hole.
Press such scheme, end cover or sealing mandrel are provided with the vent port that is connected with the middle cavity of ladder hole.
Press such scheme, the butt-end packing configuration of the shoulder of hole on O-ring seal and the end cover be set in the upper surface of sealing mandrel, seal mandrel upper end snail line below install the seal bore seal arrangement below O-ring seal and the end cover screw, hermetically-sealed construction on the formation.
Press such scheme, the end face of hole shoulder is provided with the upper surface seal arrangement of O-ring seal and well head head under end cover, above locking hole, installs the upper end periphery seal arrangement of O-ring seal and well head head, constitutes outer seal configuration.
Press such scheme, can install the VX ring gasket at shoulder place in hole under the end cover, the upper and lower of VX ring gasket respectively with the end cover ladder hole in the middle of aperture, cavity wall and well head head upper end seal arrangement, alternative outer seal configuration.
Press such scheme, endoporus seal arrangement below the lower end periphery of sealing mandrel is installed twice axial sealing ring and well head head constitutes inner seal structure.
Press such scheme; Described mobile lock dog comprises lock dog and is installed in the circumferential radial drive bolt of end cover; Lock dog is the circular arc bulk, the internal thread of the inner face setting of circular arc piece and well head head external thread phase configuration, and the periphery of circular arc piece is provided with the termination phase configuration of hole slot and radial drive bolt.
Press such scheme, described mobile lock dog is circumferentially installed 4～20 along annular groove.
Press such scheme; Be respectively arranged with the sealing detection hole in the upper and lower end face of described sealing mandrel; Ring cavity between two O-ring seals of sealing detection hole, upper end and last hermetically-sealed construction is connected, and the ring cavity between two O-ring seals of sealing detection hole, lower end and inner seal structure is connected.
Press such scheme, described end cover periphery is provided with the sealing detection hole, and the ring cavity between two O-ring seals of sealing detection hole and outer seal configuration is connected.
Press such scheme, described sealing mandrel middle part is provided with the location shaft shoulder of two places and well head head endoporus phase configuration, and the location shaft shoulder is provided with flow channels.
The beneficial effect of the utility model is: 1, utilize the sealing between end cover, sealing mandrel and the well head head three to set up an annular sealed space; Formation is to the hydrostatic test condition of well head head pressurization; And be employed in the sealing means of well head head internal placement sealing mandrel; Reduced the test fixture single load bearing total area, thereby reduced to press in the well head normal pressure greatly the test frock; 2, adopt the mechanical interlocking mode that end cover is locked at well in word, and utilize the end cap internal whorl that the sealing mandrel is fixed, make simple and reliable for structurely, overcome the drawback of hydraulic locking; 3, utilize the sealing monitoring channel that the sealing of every place is monitored in real time, can effectively comprehensively monitor process of the test; 4, apparatus structure is simple, is provided with rationally, and easy to install and use, safe reliability is high, long service life, and can reuse.
Description of drawings
Fig. 1 looks cut-open view for the master of an embodiment of the utility model, and double dot dash line is by the well head head of pressure testing among the figure.
Fig. 2 looks cut-open view for the master of another embodiment of the utility model.
Fig. 3 is the stereographic map of lock dog among embodiment of the utility model.
Fig. 4 is the stereographic map that lock dog drives bolt among embodiment of the utility model.
Embodiment
Specific embodiment below in conjunction with accompanying drawing further explain the utility model.
First embodiment is like Fig. 1,3, shown in 4; Comprise end cover 1 and sealing mandrel 2; Described end cover offers ladder hole, and the upper end of ladder hole is provided with the screw with the mandrel phase configuration, and the screw upper end is provided with the hole shoulder; Offer seal groove in the upper surface of sealing mandrel the butt-end packing configuration that take in the hole on O-ring seal 8 and the end cover is set; Install the seal bore seal arrangement below O-ring seal 9 and the end cover screw offering seal groove below the sealing mandrel upper end snail line, hermetically-sealed construction on formations, the ring cavity between above-mentioned two O-ring seals be arranged on the sealing detection hole 5 that seals the mandrel upper surface and be connected; The centre of ladder hole is provided with cavity; The bigger locking hole in aperture of setting and well head head periphery phase configuration in the ladder hole lower end; The oral external thread of corresponding well is offered annular groove in the locking hole; Install mobile lock dog in the annular groove, described mobile lock dog comprises lock dog 4 and is installed in the circumferential radial drive bolt 3 of end cover that lock dog is the circular arc bulk; The internal thread of the inner face setting of circular arc piece and well head head external thread phase configuration; The periphery below of circular arc piece is provided with the termination phase configuration of hole slot and radial drive bolt, and the radial drive bolt is a hexagon socket head cap screw, and described mobile lock dog is circumferentially installed 16 along annular groove.Make end cover and well head head be locked relatively through moving lock dog.The locking hole upper end is provided with down the hole shoulder; The end face of hole shoulder is offered the upper surface seal arrangement that seal groove is provided with O-ring seal 10 and well head head under end cover; Above locking hole, offer seal groove and install the upper end periphery seal arrangement of O-ring seal 11 and well head head; Constitute outer seal configuration, the end cover periphery is provided with sealing detection hole 5, and the ring cavity between two O-ring seals of sealing detection hole and outer seal configuration is connected.Described sealing mandrel upper end is provided with screw thread and links to each other with the screw of end cover upper end; Described sealing mandrel middle part is provided with the location shaft shoulder of two places and well head head endoporus phase configuration; The location shaft shoulder is provided with flow channels; Endoporus seal arrangement below the lower end periphery of sealing mandrel is installed twice axial sealing ring 12 and well head head constitutes inner seal structure, sealing detection hole 5 is set in the lower surface of sealing mandrel is connected with ring cavity between two O-ring seals.In addition, the end cover upper end is provided with the notes that are connected with the middle cavity of ladder hole and presses hole 6 and vent port 7, is used for the pump pressure and the exhaust of hydrostatic test.
Second embodiment is as shown in Figure 2 for the utility model; The difference of it and a last embodiment is that shoulder place in hole installs VX ring gasket 13 under end cover; The upper and lower of VX ring gasket respectively with the end cover ladder hole in the middle of cavity wall and well head head on the aperture seal arrangement, alternative outer seal configuration.Other structure is identical with a last embodiment.
Before the utility model assembling, with all O-ring seal installation in position, and make on the end cover all move lock dog to be in unlocked position, with sealing mandrel being threaded on the end cover through head.When making an experiment, the hoisting test device, it is inner to make the sealing mandrel be positioned at the well head head, and end cover is sat and is placed on well in word, tightens the radial drive bolt then, drives lock dog and moves radially, and makes end cover and well head head be locked relatively.Through annotate pressing the hole to inject test fluid flow to the annular closed cavity, when fluid when vent port overflows, close vent port, the Hi-pot test fluid is injected press the hole to inject the Hi-pot test fluid then to the annular closed cavity, carry out the test of well head head hydrostatic pressing according to program.In the process of the test, through the sealing effectiveness of three places sealing in the sealing monitoring sensor monitoring system.
Claims (10)
1. a underwater wellhead hydrostatic test device is characterized in that comprising end cover and sealing mandrel, and described end cover offers ladder hole; The upper end of ladder hole is provided with the screw with the mandrel phase configuration; The screw upper end is provided with the hole shoulder, and the ladder hole lower end is provided with the locking hole with well head head periphery phase configuration, offers annular groove in the locking hole; Install mobile lock dog in the annular groove; The locking hole upper end is provided with down the hole shoulder, and described sealing mandrel upper end is provided with screw thread and links to each other the periphery and the well head head endoporus phase configuration of sealing mandrel with the screw sealing of end cover upper end; And the lower end periphery of sealing mandrel and well head head below endoporus seal arrangement, end cover or sealing mandrel are provided with the notes that are connected with the middle cavity of ladder hole and press the hole.
2. underwater wellhead hydrostatic test device as claimed in claim 1 is characterized in that end cover or sealing mandrel are provided with the vent port that is connected with the middle cavity of ladder hole.
3. according to claim 1 or claim 2 underwater wellhead hydrostatic test device; It is characterized in that being provided with the butt-end packing configuration of hole shoulder on O-ring seal and the end cover in the upper surface of sealing mandrel; At the seal bore seal arrangement of installing below the sealing mandrel upper end snail line below O-ring seal and the end cover screw, hermetically-sealed construction on the formation.
4. underwater wellhead hydrostatic test device as claimed in claim 3; It is characterized in that the end face of hole shoulder under end cover is provided with the upper surface seal arrangement of O-ring seal and well head head; Above locking hole, install the upper end periphery seal arrangement of O-ring seal and well head head, constitute outer seal configuration.
5. underwater wellhead hydrostatic test device as claimed in claim 3; It is characterized in that shoulder place in hole installs the VX ring gasket under end cover, the upper and lower of VX ring gasket respectively with the end cover ladder hole in the middle of cavity wall and well head head on the aperture seal arrangement.
6. like claim 4 or 5 described underwater wellhead hydrostatic test devices, it is characterized in that endoporus seal arrangement below the lower end periphery of sealing mandrel is installed twice axial sealing ring and well head head, constitute inner seal structure.
7. according to claim 1 or claim 2 underwater wellhead hydrostatic test device; It is characterized in that described mobile lock dog comprises lock dog and is installed in the circumferential radial drive bolt of end cover; Lock dog is the circular arc bulk; The internal thread of the inner face setting of circular arc piece and well head head external thread phase configuration, the periphery of circular arc piece is provided with the termination phase configuration of hole slot and radial drive bolt.
8. underwater wellhead hydrostatic test device as claimed in claim 7 is characterized in that described mobile lock dog circumferentially installs 4～20 along annular groove.
9. underwater wellhead hydrostatic test device as claimed in claim 6; It is characterized in that being respectively arranged with the sealing detection hole in the upper and lower end face of described sealing mandrel; Ring cavity between two O-ring seals of sealing detection hole, upper end and last hermetically-sealed construction is connected, and the ring cavity between two O-ring seals of sealing detection hole, lower end and inner seal structure is connected; Described end cover periphery is provided with the sealing detection hole, and the ring cavity between two O-ring seals of sealing detection hole and outer seal configuration is connected.
10. according to claim 1 or claim 2 underwater wellhead hydrostatic test device is characterized in that described sealing mandrel middle part is provided with the location shaft shoulder of two places and well head head endoporus phase configuration, locatees the shaft shoulder and is provided with flow channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201006868U CN202485989U (en) | 2012-03-16 | 2012-03-16 | Underwater well-mouth-head hydrostatic pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201006868U CN202485989U (en) | 2012-03-16 | 2012-03-16 | Underwater well-mouth-head hydrostatic pressure testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485989U true CN202485989U (en) | 2012-10-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201006868U Withdrawn - After Issue CN202485989U (en) | 2012-03-16 | 2012-03-16 | Underwater well-mouth-head hydrostatic pressure testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202485989U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607957A (en) * | 2012-03-16 | 2012-07-25 | 江汉石油钻头股份有限公司 | Hydrostatic pressure testing device for underwater wellhead |
| CN105158077A (en) * | 2015-08-21 | 2015-12-16 | 江苏科技大学 | Water pressure environment simulation test device |
| CN105888649A (en) * | 2015-05-15 | 2016-08-24 | 中国石油大学(北京) | Test device and test method for simulation on deepwater underwater wellhead |
| CN107643218A (en) * | 2017-09-11 | 2018-01-30 | 中国石油大学(北京) | A kind of curved experimental apparatus for testing of wellhead connector big load tension and compression and experimental method |
-
2012
- 2012-03-16 CN CN2012201006868U patent/CN202485989U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607957A (en) * | 2012-03-16 | 2012-07-25 | 江汉石油钻头股份有限公司 | Hydrostatic pressure testing device for underwater wellhead |
| CN102607957B (en) * | 2012-03-16 | 2013-11-27 | 江汉石油钻头股份有限公司 | Hydrostatic pressure testing device for underwater wellhead |
| CN105888649A (en) * | 2015-05-15 | 2016-08-24 | 中国石油大学(北京) | Test device and test method for simulation on deepwater underwater wellhead |
| CN105158077A (en) * | 2015-08-21 | 2015-12-16 | 江苏科技大学 | Water pressure environment simulation test device |
| CN105158077B (en) * | 2015-08-21 | 2018-02-23 | 江苏科技大学 | A kind of hydraulic pressure environmental simulation test device |
| CN107643218A (en) * | 2017-09-11 | 2018-01-30 | 中国石油大学(北京) | A kind of curved experimental apparatus for testing of wellhead connector big load tension and compression and experimental method |
| CN107643218B (en) * | 2017-09-11 | 2020-02-14 | 中国石油大学(北京) | Wellhead connector large-load tension-compression bending test experimental device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121010 Effective date of abandoning: 20131127 |
|
| RGAV | Abandon patent right to avoid regrant |