CN201738867U - Pre-filling self-expandable packer for well completion - Google Patents
Pre-filling self-expandable packer for well completion Download PDFInfo
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- CN201738867U CN201738867U CN2010202638851U CN201020263885U CN201738867U CN 201738867 U CN201738867 U CN 201738867U CN 2010202638851 U CN2010202638851 U CN 2010202638851U CN 201020263885 U CN201020263885 U CN 201020263885U CN 201738867 U CN201738867 U CN 201738867U
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Abstract
The utility model relates to a pre-filling self-expandable packer for well completion. A spacing ring A and a spacing ring B are respectively positioned on two ends of a parent tube. A snap ring A and a snap ring B fixed in the groove on the outer wall of the parent tube are clamped in grooves on the inner walls of the spacing ring A and the spacing ring B to be fixed; the inner wall of the spacing ring A, the inner wall of the spacing ring B, and the outer wall of the parent tube are sealed by an O-shaped ring A and an O-shaped ring B; A spacing cylinder with holes is sheathed among the outer wall of the parent tube, the spacing ring A and is fixed on the spacing ring A and the spacing ring B by a bolt A and a bolt B; the annular chamber between the inner wall of the spacing cylinder with holes and the outer wall of the parent tube is filled with expansion media; oil swellable rubber is vulcanized on the outer wall of the spacing cylinder with holes, and the expansion media are communicated with oil swellable rubber by the penetration holes on the spacing cylinder with holes. The pre-filling self-expandable packer has simple structure, convenient installation and operation, short packing time and large packing differential pressure, can greatly reduce the well completion time of the hyposmosis oil deposit, reduces operation cost, and reduces the operation risks caused by the leakage of the packer.
Description
Technical field
The utility model relates to down-hole, a kind of oil field completion with pre-filling self-expanding packer.
Background technology
Meeting oily self-expanding packer is a kind of novel packer that grows up in the oil field in recent years.At present, the oily self-expanding packer of common chance mainly is that dependence self rubber absorbs crude oil expansion packing stratum in the down-hole, and itself does not have the medium-crude oil that is used to expand.When meeting oily self-expanding packer when low-permeability oil deposit carries out completion, because packing element lacks sufficient crude oil supply, packing element can not effectively expand to seal and press, and has had a strong impact on operation process and completion efficiency.At the scene, injection diesel oil sets with the expansion of quickening the oily self-expanding packer of chance in well sometimes, but finally can increase the flow chart of packer, increases operating risk and Completion cost.
The utility model content
The purpose of this utility model provides a kind of oilfield well completion with pre-filling self-expanding packer, to overcome existing common self-expanding packer when the low-permeability oil deposit completion, the time that sets is long, the shortcoming of well-completing process complexity, the final completion efficiency that improves low-permeability oil deposit reduces Completion cost.
A kind of oilfield well completion that the utility model provides with pre-filling self-expanding packer by parent tube, spacing ring A, O type circle A, snap ring A, screw A, meet oily expanded rubber, inflating medium, with holesly form every tube, spacing ring B, O type circle B, snap ring B, screw B; Spacing ring A, spacing ring B lay respectively at the outer two ends of parent tube, fix by the groove that the snap ring A, the snap ring B that are fixed in the parent tube outer wall groove snap on spacing ring A, the spacing ring B inwall, seal by O type circle A, O type circle B between spacing ring A, spacing ring B inwall and the parent tube outer wall; With holes every jacket casing at the parent tube outer wall, between spacing ring A and the spacing ring B, be fixed on spacing ring A, the spacing ring B by screw A, screw B, inflating medium is filled in the toroidal cavity between tube inwall and parent tube outer wall with holes, meet oily expanded rubber and vulcanize with holes on drum outer wall, inflating medium and the oily expanded rubber of chance are communicated with by the permeability hole on tube with holes.
Before the packer assembling, in vulcanizing tank, will meet earlier oily expanded rubber and vulcanize with holes on tube.During assembling, earlier snap ring A is put into the groove of parent tube one end, the spacing ring A that will have O type circle A then is inserted on the parent tube, when snap ring A top enters in the annular groove on the spacing ring A fully, represents that promptly spacing ring A installs.Wait to vulcanize to have and meet the with holes after the tube cooling of oily expanded rubber, be inserted in every the other end of tube from parent tube with holes.With screw A spacing ring A and a end every tube with holes are fixed, then sebaceous inflating medium is injected parent tube and the toroidal cavity every tube with holes.With screw B the spacing ring B and the other end every tube with holes are fixed at last, promptly finish the assembling of packer.Wherein the self-expanding medium has higher molten point (its molten point can be allocated according to formation temperature).When the packer G.I.H, inflating medium runs into and begins liquefaction in the well behind the high temperature, and aqueous inflating medium flows into through the permeability hole on tube with holes and meets oily expanded rubber, causes that the expansion of meeting oily expanded rubber sets.
Packer provided by the utility model has simple in structure, and installation and constructing operation be characteristics easily.Simultaneously, this packer is compared with present common self-expanding packer, has the time of setting weak point, the characteristics that packing pressure reduction is big.To shorten completion time of low-permeability oil deposit greatly with this packer completion, reduce operating cost, the not tight operating risk of bringing of MIN reduction packer setting.
Description of drawings
Fig. 1 completion is with pre-filling self-expanding packer construction schematic diagram.
Fig. 2 completion is with pre-filling self-expanding packer partial structurtes schematic diagram.
Wherein: 1 parent tube, 2 spacing ring A, 3O type circle A, 4 snap ring A, 5 screw A, 6 are with holesly met oily expanded rubber, 8 inflating mediums, 9 permeability holes, 10 screw B, 11 spacing ring B, 12 snap ring B, 13O type circle B every tube, 7;
The specific embodiment
A kind of oilfield well completion that the utility model provides with pre-filling self-expanding packer by parent tube 1, spacing ring A2, O type circle A3, snap ring A4, screw A5, meet oily expanded rubber 7, inflating medium 8, with holesly form every tube 6, spacing ring B11, O type circle B13, snap ring B12, screw B10; Spacing ring A2, spacing ring B11 lay respectively at parent tube 1 outer two ends, fix by the groove that the snap ring A4, the snap ring B12 that are fixed in the parent tube 1 outer wall groove snap on spacing ring A2, the spacing ring B1 inwall, seal by O type circle A3, O type circle B13 between spacing ring A2, spacing ring B11 inwall and parent tube 1 outer wall; With holesly be enclosed within parent tube 1 outer wall every tube 6, between spacing ring A2 and the spacing ring B11, be fixed on spacing ring A2, the spacing ring B11 by screw A5, screw B10, inflating medium 8 is filled in the toroidal cavity between tube 6 inwalls and parent tube 1 outer wall with holes, meet oily expanded rubber 7 and vulcanize with holes on tube 6 outer walls, inflating medium 8 and the oily expanded rubber 7 of chance are communicated with by the permeability hole on tube 6 with holes.
Claims (1)
1. a completion is with pre-filling self-expanding packer, by parent tube, spacing ring A, O type circle A, snap ring A, screw A, meet oily expanded rubber, inflating medium, with holesly form every tube, spacing ring B, O type circle B, snap ring B, screw B; It is characterized in that: spacing ring A, spacing ring B lay respectively at the outer two ends of parent tube, fix by the groove that the snap ring A, the snap ring B that are fixed in the parent tube outer wall groove snap on spacing ring A, the spacing ring B inwall, seal by O type circle A, O type circle B between spacing ring A, spacing ring B inwall and the parent tube outer wall; With holes every jacket casing at the parent tube outer wall, between spacing ring A and the spacing ring B, be fixed on spacing ring A, the spacing ring B by screw A, screw B, inflating medium is filled in the toroidal cavity between tube inwall and parent tube outer wall with holes, meet oily expanded rubber and vulcanize with holes on drum outer wall, inflating medium and the oily expanded rubber of chance are communicated with by the permeability hole on tube with holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202638851U CN201738867U (en) | 2010-07-14 | 2010-07-14 | Pre-filling self-expandable packer for well completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202638851U CN201738867U (en) | 2010-07-14 | 2010-07-14 | Pre-filling self-expandable packer for well completion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201738867U true CN201738867U (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202638851U Expired - Lifetime CN201738867U (en) | 2010-07-14 | 2010-07-14 | Pre-filling self-expandable packer for well completion |
Country Status (1)
| Country | Link |
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| CN (1) | CN201738867U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322237A (en) * | 2011-06-14 | 2012-01-18 | 中国石油天然气股份有限公司 | Self-inflatable packer |
| CN102337855A (en) * | 2010-07-14 | 2012-02-01 | 中国石油天然气股份有限公司 | Pre-filling self expansion packer for well completion |
| CN102787825A (en) * | 2011-05-18 | 2012-11-21 | 中国石油化工集团公司 | Tool and method for cementing well and preventing channeling |
| AU2013100386B4 (en) * | 2013-03-28 | 2013-09-12 | Welltec Oilfield Solutions Ag | Annular barrier |
| CN106437608A (en) * | 2016-10-10 | 2017-02-22 | 贵州高峰石油机械股份有限公司 | Drilling-free hierarchical cementing method and cementing device |
-
2010
- 2010-07-14 CN CN2010202638851U patent/CN201738867U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337855A (en) * | 2010-07-14 | 2012-02-01 | 中国石油天然气股份有限公司 | Pre-filling self expansion packer for well completion |
| CN102787825A (en) * | 2011-05-18 | 2012-11-21 | 中国石油化工集团公司 | Tool and method for cementing well and preventing channeling |
| CN102322237A (en) * | 2011-06-14 | 2012-01-18 | 中国石油天然气股份有限公司 | Self-inflatable packer |
| CN102322237B (en) * | 2011-06-14 | 2014-01-15 | 中国石油天然气股份有限公司 | Self-inflatable packer |
| AU2013100386B4 (en) * | 2013-03-28 | 2013-09-12 | Welltec Oilfield Solutions Ag | Annular barrier |
| CN106437608A (en) * | 2016-10-10 | 2017-02-22 | 贵州高峰石油机械股份有限公司 | Drilling-free hierarchical cementing method and cementing device |
| CN106437608B (en) * | 2016-10-10 | 2019-02-19 | 贵州高峰石油机械股份有限公司 | A kind of drilling-free sizing cementing method and cementing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |
|
| CX01 | Expiry of patent term |