CN203835360U - Compensation device preventing wellhead ascension during offshore heavy oil thermal recovery - Google Patents
Compensation device preventing wellhead ascension during offshore heavy oil thermal recovery Download PDFInfo
- Publication number
- CN203835360U CN203835360U CN201420249380.8U CN201420249380U CN203835360U CN 203835360 U CN203835360 U CN 203835360U CN 201420249380 U CN201420249380 U CN 201420249380U CN 203835360 U CN203835360 U CN 203835360U
- Authority
- CN
- China
- Prior art keywords
- compensation arrangement
- sleeve pipe
- casing
- described sleeve
- heavy oil
- 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.)
- Expired - Lifetime
Links
- 239000000295 fuel oil Substances 0.000 title claims abstract description 15
- 238000011084 recovery Methods 0.000 title abstract description 4
- 239000003921 oil Substances 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 230000000630 rising effect Effects 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000008646 thermal stress Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 3
- 241000191291 Abies alba Species 0.000 abstract 1
- 238000000605 extraction Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a compensation device preventing wellhead ascension during offshore heavy oil thermal recovery. The compensation device comprises a barrel-shaped body, a plurality of seal rings, a tube-shaped tubing telescopic compensator and a casing, wherein the upper end of the barrel-shaped body is sealed, and the lower end of the barrel-shaped body is open; the seal rings are embedded in the body at intervals from top to bottom; the tubing telescopic compensator penetrates through the upper end of the body in the axial direction and then extends out of the body; the tube-shaped tubing telescopic compensator is sleeved with the casing. An annular reserved space exists between the tubing telescopic compensator and the body. The outer wall of the casing makes contact with the seal rings in the body, and a gap is reserved between the inner wall of the casing and the tubing telescopic compensator. The upper end and the lower end of the body are respectively provided with a flange structure, and the compensation device is fixed between a tubing head and a casing head through the flange structures at the upper end and the lower end of the body. According to the compensation device, in a heavy oil thermal recovery process, when multiple thermal fluids are injected in from the wellhead, the casing expands by being heated and ascends upwards along the reserved space of the body in the vertical direction, thermal stress is effectively released, and therefore the situation that because the casing is extended, a Christmas tree ascends is avoided, potential safety hazards are eliminated, and it is guaranteed that oil production proceeds normally.
Description
Technical field
The utility model relates to a kind of heavy crude heat extraction development device, is specifically related to a kind of compensation arrangement that Offshore Heavy Oil Field thermal production well mouth raises that prevents that is applied to petroleum natural gas exploration field.
Background technology
Offshore Heavy Oil Field Simulation on whole pay zones technology is one and has high-tech, high investment, high risk industry.Steam soak is the main development scheme of present stage Offshore Heavy Oil Field.Conventional well mouth structure is that tubing head is directly connected with casing head at present, without headspace, the heat producing in steam soak process makes quill excessive to thermal stress, causes casing deformation, and then cause that casing head and well head raise, and bring hidden danger to the safety of heavy crude heat extraction.Especially Offshore Heavy Oil Field thermal recovery, due to the particularity of its working environment, can not get effective control if casing head and well head raise, and will cause great threat to platform and staff's safety.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of sleeve pipe compensation arrangement that prevents that Offshore Heavy Oil Field thermal production well mouth from raising, and can extend by effective compensation heavy crude heat extraction process middle sleeve, controls well head lifting, eliminate safe hidden trouble, guarantee that oil producing operation normally carries out.
For achieving the above object, the utility model is taked following technical scheme: a kind of compensation arrangement that prevents that Offshore Heavy Oil Field thermal production well mouth from raising, it is characterized in that, this compensation arrangement comprises: a upper end closed, the tubular sleeve pipe rising compensation arrangement body that lower end is uncovered, several are embedded in the intrinsic sealing ring of described sleeve pipe rising compensation arrangement in interval from top to bottom, one runs through the tubulose oil pipe extension expansion loop that extends downward described sleeve pipe rising compensation arrangement body exterior behind the upper end of described sleeve pipe rising compensation arrangement body vertically, an and sleeve pipe that is set in described oil pipe extension expansion loop outside, wherein, between described oil pipe extension expansion loop and described sleeve pipe rising compensation arrangement body, there is the headspace of an annular, the outer wall of described sleeve pipe contacts with the intrinsic sealing ring of described sleeve pipe rising compensation arrangement, between the inwall of described sleeve pipe and described oil pipe extension expansion loop, leaves gap, the upper and lower side of described sleeve pipe rising compensation arrangement body all has flange arrangement, and described compensation arrangement is fixed between tubing head and casing head by the flange arrangement of described sleeve pipe rising compensation arrangement body upper and lower side.
In a preferred embodiment, the length in vertical direction of the headspace between described oil pipe extension expansion loop and described sleeve pipe rising compensation arrangement body is 800mm.
In a preferred embodiment, the BT sealing ring that described sealing ring adopts the embedded spring in upper and lower end face and is integrated with the vulcanization of rubber, the carbon spring steel wires coiling that described spring is 1mm by diameter forms, and described rubber is selected oil resistant, soda acid, sizing material that aging is good.
In a preferred embodiment, described sleeve pipe adopts ferrous alloy dilatancy material.
The utility model is owing to taking above technical scheme, it has the following advantages: the utility model is fixed between tubing head and casing head, in heavy crude heat extraction process, along with injecting multielement hot fluid from well head, sleeve pipe expanded by heating vertical direction, along the lifting that makes progress of the headspace of sleeve pipe rising compensation arrangement body, realizes thermal stress and effectively discharges, thereby avoid causing because sleeve pipe extends production tree lifting, eliminate safe hidden trouble, guarantee that oil producing operation normally carries out.Meanwhile, sleeve pipe expanded radially can guarantee airtight quality.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is carried out to detailed describing.Yet only providing in order to understand better the utility model of accompanying drawing is provided, they not should be appreciated that paired restriction of the present utility model.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is installation site of the present utility model schematic diagram.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the utility model comprises a sleeve pipe rising compensation arrangement body 1, an oil pipe extension expansion loop 2 and a sleeve pipe 3.Wherein, sleeve pipe rising compensation arrangement body 1 is upper end closed, the uncovered tubular structure in lower end, and its upper and lower side all has flange arrangement, and its inwall from top to bottom interval is embedded with several sealing rings 4.Oil pipe extension expansion loop 2 is tubular structure, it extends downward sleeve pipe rising compensation arrangement body 1 outside after running through vertically the upper end of sleeve pipe rising compensation arrangement body 1, and between oil pipe extension expansion loop 2 and sleeve pipe rising compensation arrangement body 1, has the headspace 5 of an annular.Sleeve pipe 3 is set in the outside of oil pipe extension expansion loop 2, and its outer wall contacts with the sealing ring 4 in sleeve pipe rising compensation arrangement body 1, between inwall and oil pipe extension expansion loop 2, leaves gap.
In a preferred embodiment, the length in vertical direction of the headspace 5 between oil pipe extension expansion loop 2 and sleeve pipe rising compensation arrangement body 1 is 800mm.
In a preferred embodiment, the BT sealing ring (balanced type series seal circle) that sealing ring 4 adopts the embedded spring in upper and lower end face and is integrated with the vulcanization of rubber, the carbon spring steel wires coiling that spring is 1mm by diameter forms, and rubber is selected oil resistant, soda acid, sizing material that aging is good.
In a preferred embodiment, sleeve pipe 3 adopts ferrous alloy dilatancy material, has high-ductility, high strength and high work hardening rate.
As shown in Figure 2, during the utility model is applied at the scene, after oil well cementing completes, according to the specification of oil well casing, determine and adopt specification of the present utility model, then the flange by sleeve pipe rising compensation arrangement body 1 upper and lower side is connected the utility model top with tubing head 6, bottom is connected with casing head 7, is fixed between tubing head 6 and casing head 7.In heavy crude heat extraction process, along with injecting multielement hot fluid from well head, sleeve pipe 3 expanded by heating vertical direction are along the headspace 5 upwards liftings of sleeve pipe rising compensation arrangement body 1, realizing thermal stress effectively discharges, thereby avoid causing because sleeve pipe 3 extends production tree 8 liftings, eliminate safe hidden trouble, guarantee that oil producing operation normally carries out.Meanwhile, sleeve pipe 3 expanded radiallys are to guarantee airtight quality.
The various embodiments described above are only for further describing the purpose of this utility model, technical scheme and beneficial effect; be not limited to the utility model; all within spirit of the present utility model and principle; any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. prevent the compensation arrangement that Offshore Heavy Oil Field thermal production well mouth raises, it is characterized in that, this compensation arrangement comprises:
One upper end closed, the uncovered tubular sleeve pipe rising compensation arrangement body in lower end,
Several are embedded in the intrinsic sealing ring of described sleeve pipe rising compensation arrangement in interval from top to bottom,
One runs through the tubulose oil pipe extension expansion loop that extends downward described sleeve pipe rising compensation arrangement body exterior behind the upper end of described sleeve pipe rising compensation arrangement body vertically, and
One is set in the sleeve pipe of described oil pipe extension expansion loop outside;
Wherein, between described oil pipe extension expansion loop and described sleeve pipe rising compensation arrangement body, there is the headspace of an annular; The outer wall of described sleeve pipe contacts with the intrinsic sealing ring of described sleeve pipe rising compensation arrangement, between the inwall of described sleeve pipe and described oil pipe extension expansion loop, leaves gap; The upper and lower side of described sleeve pipe rising compensation arrangement body all has flange arrangement, and described compensation arrangement is fixed between tubing head and casing head by the flange arrangement of described sleeve pipe rising compensation arrangement body upper and lower side.
2. the compensation arrangement that prevents that Offshore Heavy Oil Field thermal production well mouth from raising as claimed in claim 1, is characterized in that, the length in vertical direction of the headspace between described oil pipe extension expansion loop and described sleeve pipe rising compensation arrangement body is 800mm.
3. the compensation arrangement that prevents that Offshore Heavy Oil Field thermal production well mouth from raising as claimed in claim 1, it is characterized in that, the BT sealing ring that described sealing ring adopts the embedded spring in upper and lower end face and is integrated with the vulcanization of rubber, the carbon spring steel wires coiling that described spring is 1mm by diameter forms, and described rubber is selected oil resistant, soda acid, sizing material that aging is good.
4. the compensation arrangement that prevents that Offshore Heavy Oil Field thermal production well mouth from raising as claimed in claim 2, it is characterized in that, the BT sealing ring that described sealing ring adopts the embedded spring in upper and lower end face and is integrated with the vulcanization of rubber, the carbon spring steel wires coiling that described spring is 1mm by diameter forms, and described rubber is selected oil resistant, soda acid, sizing material that aging is good.
As claimed in claim 1 or 2 or 3 or 4 prevent the compensation arrangement that Offshore Heavy Oil Field thermal production well mouth raises, it is characterized in that, described sleeve pipe adopts ferrous alloy dilatancy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249380.8U CN203835360U (en) | 2014-05-15 | 2014-05-15 | Compensation device preventing wellhead ascension during offshore heavy oil thermal recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249380.8U CN203835360U (en) | 2014-05-15 | 2014-05-15 | Compensation device preventing wellhead ascension during offshore heavy oil thermal recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835360U true CN203835360U (en) | 2014-09-17 |
Family
ID=51513216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420249380.8U Expired - Lifetime CN203835360U (en) | 2014-05-15 | 2014-05-15 | Compensation device preventing wellhead ascension during offshore heavy oil thermal recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835360U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005746A (en) * | 2014-05-15 | 2014-08-27 | 中国海洋石油总公司 | Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending |
| CN114000850A (en) * | 2021-12-31 | 2022-02-01 | 纬达石油装备有限公司 | Straight-through type thermal recovery casing head and using method thereof |
-
2014
- 2014-05-15 CN CN201420249380.8U patent/CN203835360U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005746A (en) * | 2014-05-15 | 2014-08-27 | 中国海洋石油总公司 | Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending |
| CN114000850A (en) * | 2021-12-31 | 2022-02-01 | 纬达石油装备有限公司 | Straight-through type thermal recovery casing head and using method thereof |
| CN114000850B (en) * | 2021-12-31 | 2022-03-04 | 纬达石油装备有限公司 | Straight-through type thermal recovery casing head and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee after: China University of Petroleum (Beijing) Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee before: China University of Petroleum (Beijing) |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191217 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee before: China University of Petroleum (Beijing) |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |
|
| CX01 | Expiry of patent term |