CN104005746A - Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending - Google Patents
Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending Download PDFInfo
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- CN104005746A CN104005746A CN201410205884.4A CN201410205884A CN104005746A CN 104005746 A CN104005746 A CN 104005746A CN 201410205884 A CN201410205884 A CN 201410205884A CN 104005746 A CN104005746 A CN 104005746A
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- compensation arrangement
- sleeve pipe
- described sleeve
- well mouth
- sleeve
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Abstract
The invention relates to a compensating device for preventing a thickened oil thermal recovery well mouth on the sea from ascending. The compensating device comprises a cylindrical body, a plurality of seal rings, a tubular oil tube stretching and retracting compensator and a sleeve, wherein the cylindrical body is closed at the upper end and opened at the lower end, the seal rings are internally embedded in the body at intervals from top to bottom, the tubular oil tube stretching and retracting compensator axially penetrates through the upper end of the body and then extends downwards to the outside of the body, and the sleeve is arranged outside the oil tube stretching and retracting compensator in a sleeved mode. An annular reserved space exists between the oil tube stretching and retracting compensator and the body, the outer wall of the sleeve makes contact with the seal rings in the body, and a gap is reserved between the inner wall of the sleeve and the oil tube stretching and retracting compensator; the upper end and the lower end of the body are respectively provided with a flange structure, and the compensating device is fixed between an oil tube head and a sleeve head through the flange structures at the upper end and the lower end of the body. In the thickened oil thermal recovery process, along with injection of multi-element hot fluid from the well mouth, and the sleeve is heated to expand and lifted upwards along the reserved space of the body in the vertical direction, so that heat stress is effectively released, it is avoided that a Christmas tree is lifted because the sleeve extends, potential safety hazards are eliminated, and normal operation of oil recovery is ensured.
Description
Technical field
The present invention relates to a kind of heavy crude heat extraction development device, be 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 object of this invention is to provide a kind of sleeve pipe compensation arrangement that prevents that Offshore Heavy Oil Field thermal production well mouth from raising, can extend by effective compensation heavy crude heat extraction process middle sleeve, control well head lifting, eliminate safe hidden trouble, ensure that oil producing operation normally carries out.
For achieving the above object, the present invention takes 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 present invention is owing to taking above technical scheme, it has the following advantages: the present invention 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 upwards lifting of headspace of sleeve pipe rising compensation arrangement body, realizes thermal stress and effectively discharges, thereby avoids causing because sleeve pipe extends production tree lifting, eliminate safe hidden trouble, ensure that oil producing operation normally carries out.Meanwhile, sleeve pipe expanded radially can ensure airtight quality.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is carried out to detailed describing.But only the providing in order to understand better the present invention of accompanying drawing is provided, they not should be understood to limitation of the present invention.
Fig. 1 is structural representation of the present invention;
Fig. 2 is installation site of the present invention schematic diagram.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the present invention includes 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 present invention applies at the scene, after oil well cementing completes, determine and adopt specification of the present invention according to the specification of oil well casing, then by the flange of sleeve pipe rising compensation arrangement body 1 upper and lower side, top of the present invention is connected 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 upwards lifting of headspace 5 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, ensure that oil producing operation normally carries out.Meanwhile, sleeve pipe 3 expanded radiallys are to ensure airtight quality.
The various embodiments described above are only for further describing object of the present invention, technical scheme and beneficial effect; be not limited to the present invention; within the spirit and principles in the present invention all; any amendment of making, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
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. a kind of 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. a kind of 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. a kind of 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.
5. as claimed in claim 1 or 2 or 3 or 4 a kind of prevents the compensation arrangement that Offshore Heavy Oil Field thermal production well mouth raises, and it is characterized in that, described sleeve pipe adopts ferrous alloy dilatancy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410205884.4A CN104005746A (en) | 2014-05-15 | 2014-05-15 | Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410205884.4A CN104005746A (en) | 2014-05-15 | 2014-05-15 | Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104005746A true CN104005746A (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410205884.4A Pending CN104005746A (en) | 2014-05-15 | 2014-05-15 | Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending |
Country Status (1)
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| CN (1) | CN104005746A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963092A (en) * | 2020-08-11 | 2020-11-20 | 大庆市富隆达石油工程机械设备有限公司 | Wellhead sealing device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4624484A (en) * | 1984-06-13 | 1986-11-25 | Atlantic Richfield Company | Shrink-fit connector for electrical well subsurface heating processes |
| CN2045023U (en) * | 1989-03-29 | 1989-09-27 | 河南石油勘探局采油工艺研究所 | Well-head compensator for thermal recovery |
| CN101324178A (en) * | 2008-07-09 | 2008-12-17 | 中国海洋石油总公司 | Casing tube heightening well head safety compensation apparatus |
| CN201241654Y (en) * | 2008-08-15 | 2009-05-20 | 胜利油田胜机石油装备有限公司 | Thermal production well head apparatus on the sea |
| US20100147530A1 (en) * | 2008-12-11 | 2010-06-17 | Vetco Gray Inc. | Bellows type adjustable casing |
| CN202731760U (en) * | 2012-05-28 | 2013-02-13 | 中国石油天然气股份有限公司 | Hot-water-injection high-pressure insulating tubular column |
| CN202990934U (en) * | 2012-10-26 | 2013-06-12 | 中国石油化工股份有限公司 | Well mouth telescopic compensator for oil well |
| CN203835360U (en) * | 2014-05-15 | 2014-09-17 | 中国海洋石油总公司 | Compensation device preventing wellhead ascension during offshore heavy oil thermal recovery |
-
2014
- 2014-05-15 CN CN201410205884.4A patent/CN104005746A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4624484A (en) * | 1984-06-13 | 1986-11-25 | Atlantic Richfield Company | Shrink-fit connector for electrical well subsurface heating processes |
| CN2045023U (en) * | 1989-03-29 | 1989-09-27 | 河南石油勘探局采油工艺研究所 | Well-head compensator for thermal recovery |
| CN101324178A (en) * | 2008-07-09 | 2008-12-17 | 中国海洋石油总公司 | Casing tube heightening well head safety compensation apparatus |
| CN201241654Y (en) * | 2008-08-15 | 2009-05-20 | 胜利油田胜机石油装备有限公司 | Thermal production well head apparatus on the sea |
| US20100147530A1 (en) * | 2008-12-11 | 2010-06-17 | Vetco Gray Inc. | Bellows type adjustable casing |
| CN202731760U (en) * | 2012-05-28 | 2013-02-13 | 中国石油天然气股份有限公司 | Hot-water-injection high-pressure insulating tubular column |
| CN202990934U (en) * | 2012-10-26 | 2013-06-12 | 中国石油化工股份有限公司 | Well mouth telescopic compensator for oil well |
| CN203835360U (en) * | 2014-05-15 | 2014-09-17 | 中国海洋石油总公司 | Compensation device preventing wellhead ascension during offshore heavy oil thermal recovery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963092A (en) * | 2020-08-11 | 2020-11-20 | 大庆市富隆达石油工程机械设备有限公司 | Wellhead sealing device |
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Application publication date: 20140827 |