CN2357124Y - Expansion heat production packer - Google Patents
Expansion heat production packer Download PDFInfo
- Publication number
- CN2357124Y CN2357124Y CN 99222545 CN99222545U CN2357124Y CN 2357124 Y CN2357124 Y CN 2357124Y CN 99222545 CN99222545 CN 99222545 CN 99222545 U CN99222545 U CN 99222545U CN 2357124 Y CN2357124 Y CN 2357124Y
- Authority
- CN
- China
- Prior art keywords
- centerbody
- pipe
- gland
- heat
- central tube
- 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 - Fee Related
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Abstract
The utility model relates to a telescopic heat production packer used for exploiting thick oil by injecting the steam. The telescopic heat production packer is composed of an upper buckle changing joint (1), a shearing pin (2), a pressing cover (3), a sealing material (4), a heat-resistant rubber cylinder (6), an upper and a lower pressing covers (5), (9) of the rubber cylinder, a center body (7), a spring piece (8), a center pipe (10) and a bell mouth (11). When the self sealing oil-sheath ring of the packer realizes the empty action, the center pipe (10) can be telescopic and be moved freely up and down in the center body (7) under the condition of the heating expansion or the cooling shrinkage of a heat-resistant oil pipe, and the telescopic quantity generated by the temperature change for the heat-resistant pipe is compensated. A telescopic pipe and a common oil pipe can dispense with being arranged by using the packer. The utility model brings the convenience for the heat injection operation, not only can reduce the production cost, but also can reduce the heating power loss of a heat injection pipe post, and eliminates the possibility that an object which falls is caused by breaking and disengaging from the oil pipe and the telescopic pipe.
Description
The utility model relates to a kind of downhole tool that is used for the exploitation via steam injection viscous crude: scalable thermal packer.
At present, when heavy oil wells heat is annotated under the operation heat-proof string, in order to compensate since instlated tubular be heated and cool off after the change in length that causes, should descend thermal packer, also to descend plain tubing and telescoping tube.Like this, not only make troubles, increased cost of production to operation, and the heat waste at plain tubing and telescoping tube position is bigger, this position is again the weakest link of stress in the whole tubing string simultaneously, thereby its disconnected possibility increase of taking off, and annotates the well ordinary production for heat and threatens.
The purpose of this utility model is to provide a kind of can compensate the scalable thermal packer that the deep fat pipe is shunk by thermal stretching and cooling.
The utility model is achieved in that it is made up of last change snapping head, shear pin, gland, encapsulant, heatproof packing element, the upper and lower gland of packing element, spring leaf, centerbody, central tube and horn mouth.Its structure, assembling feature are as follows: the central tube upper and lower end go up to become snapping respectively and closes and horn mouth by being threaded; Central tube top and the last snapping head lower end that becomes are set with gland, penetrate 4 shear pins in the circular hole that gland and last change snapping head match and are connected and fixed; Central tube is set with centerbody outward, the centerbody upper end places in the gland, the bottom is set with the heatproof packing element, be provided with spring leaf in the groove between centerbody and packing element, the packing element upper and lower is equipped with the upper and lower gland of packing element respectively, upper and lower gland is connected with centerbody by screw thread respectively, is provided with encapsulant in central tube and the centerbody upper gap.Before the steam injection, this thermal packer is annotated tubing string down to desired depth with heat.After beginning to annotate vapour, heat-proof string is subjected to thermal stretching, and when bottom temp reached the packer operating temperature, the packer expanded by heating was realized the oil casing annular space sealing.After stopping annotating, the insulated tubing temperature descends and shrinks, and packer still is in sealing state, at this moment, shear pin can be cut off owing to shrinking the stress that produces every the insulated tubing cooling, central tube just can easy on and off telescopic moving in the packer centerbody, thus the stroke that the compensation instlated tubular produces because of variations in temperature.
The utility model major advantage is as follows: annotate operation one, for heat and bring convenience, needn't descend telescoping tube and plain tubing again; Two, reduced cost of production; Three, reduced the thermodynamic loss of steam injection string; Four, oil pipe, the disconnected possibility that causes trouble of lost tool in hole of taking off of telescoping tube have been eliminated.
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated.
As shown in the figure, the utility model is made up of last change snapping head 1, shear pin 2, gland 3, encapsulant 4, heatproof cushion rubber 6, the upper and lower gland 5,9 of packing element, centerbody 7, spring leaf 8, central tube 10 and horn mouth 11.Wherein, on to become snapping head 1 diameter up big and down small, inner headed face is with negative thread respectively, the bottom periphery is uniformly distributed with 4 non-through circular holes that screw in shear pin 2 usefulness along the circumference.Gland 3 diameters are up-small and down-big, and top is uniformly distributed with 4 through holes that screw in shear pin 2 usefulness along the circumference, and the inner headed face middle part is provided with hollow round platform, bottom band negative thread.Encapsulant 4 adopts the graphite cushion rubber.Heatproof packing element 6 can adopt the high temperature resistant packing element of the temperature-sensitive of unlike material.Centerbody 7 is cylindrical generally, wherein, the bottom periphery is provided with the little step in 4 places, in order to match with packing element 6 and upper and lower gland 5,9, wherein is with pin thread on upper/lower terminal and the little step that gland 5,9 cooperates, inner headed face top is a bit larger tham the bottom, so that device encapsulant 4.Central tube 10 adopts the general part of external diameter 73--85mm, internal diameter 50--62mm, and its periphery and centerbody 7 bottom inner headed faces are tolerance fit, and central tube 10 can be done telescopic moving up and down in centerbody 7.
Claims (2)
1, a kind of scalable thermal packer, be made up of last change snapping head (1), shear pin (2), gland (3), encapsulant (4), heatproof packing element (6), the upper and lower gland of packing element (5), (9), centerbody (7), spring leaf (8), central tube (10) and horn mouth (11), its feature is as follows: central tube (10), upper and lower end are gone up by being threaded respectively and are become snapping head (1) and horn mouth (11); Central tube (10) top and last snapping head (1) lower end that becomes are set with gland (3), penetrate shear pin (2) in the circular hole that gland (3) and last change snapping head (1) match and are connected and fixed; The outer centerbody (7) that is set with of central tube (10), centerbody (7) upper end places in the gland (3), the bottom is set with heatproof packing element (6), be provided with spring leaf (8) in the groove between centerbody (7) and packing element (6), packing element (6) upper and lower is equipped with the upper and lower gland of packing element (5), (9) respectively, upper and lower gland (5), (9) are connected with centerbody (7) by screw thread respectively, are provided with encapsulant (4) in central tube (10) and centerbody (7) the top internal clearance.
2, scalable thermal packer according to claim 1, it is characterized in that centerbody (7) is cylindrical generally, its middle and lower part periphery is provided with 4 places and connects the little step of cooperation, wherein be with pin thread on the little step of upper/lower terminal, inner headed face top is a bit larger tham the bottom; Central tube (10) periphery and centerbody (7) bottom inner headed face are tolerance fit, and central tube (10) can be done upper and lower telescopic moving in centerbody (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99222545 CN2357124Y (en) | 1999-01-15 | 1999-01-15 | Expansion heat production packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99222545 CN2357124Y (en) | 1999-01-15 | 1999-01-15 | Expansion heat production packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2357124Y true CN2357124Y (en) | 2000-01-05 |
Family
ID=34012918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99222545 Expired - Fee Related CN2357124Y (en) | 1999-01-15 | 1999-01-15 | Expansion heat production packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2357124Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187055B (en) * | 2008-10-13 | 2014-09-10 | 国际壳牌研究有限公司 | Circulated heated transfer fluid systems used to treat a subsurface formation |
| CN109488313A (en) * | 2018-12-10 | 2019-03-19 | 中交公局桥隧工程有限公司 | A kind of micro- benching tunnelling method excavation construction process of V grade of country rock |
| CN110905468A (en) * | 2019-11-12 | 2020-03-24 | 盘锦兴隆石化机械有限公司 | Heat-insulation underground multistage compensator for oil field steam injection well |
-
1999
- 1999-01-15 CN CN 99222545 patent/CN2357124Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187055B (en) * | 2008-10-13 | 2014-09-10 | 国际壳牌研究有限公司 | Circulated heated transfer fluid systems used to treat a subsurface formation |
| CN109488313A (en) * | 2018-12-10 | 2019-03-19 | 中交公局桥隧工程有限公司 | A kind of micro- benching tunnelling method excavation construction process of V grade of country rock |
| CN110905468A (en) * | 2019-11-12 | 2020-03-24 | 盘锦兴隆石化机械有限公司 | Heat-insulation underground multistage compensator for oil field steam injection well |
| CN110905468B (en) * | 2019-11-12 | 2021-11-09 | 盘锦兴隆石化机械有限公司 | Heat-insulation underground multistage compensator for oil field steam injection well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |