CN201013300Y - Anti-backflow water-proof oil production well completion pipe string and device - Google Patents
Anti-backflow water-proof oil production well completion pipe string and device Download PDFInfo
- Publication number
- CN201013300Y CN201013300Y CNU2007201037511U CN200720103751U CN201013300Y CN 201013300 Y CN201013300 Y CN 201013300Y CN U2007201037511 U CNU2007201037511 U CN U2007201037511U CN 200720103751 U CN200720103751 U CN 200720103751U CN 201013300 Y CN201013300 Y CN 201013300Y
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- Prior art keywords
- center tube
- packer
- jump ring
- chimney
- pipe
- 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
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 210000002445 nipple Anatomy 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims description 22
- 238000012856 packing Methods 0.000 claims description 20
- 239000010985 leather Substances 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000007689 inspection Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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Abstract
A backflow-preventing water-resisting oil production well completion pipe column and device suitable for water outlet casing well completion of an upper portion of a reservoir and a damaged section of a casing comprise a female plug (1), a backflow-preventing valve (2), an anchoring (3), an oil pipe nipple (4), a packer (5), a sealing pipe (6), a releasing joint (7) and an oil pipe (8), wherein the female plug (1), the backflow-preventing valve (2), the anchoring (3), the oil pipe nipple (4), the sealing pipe (6), the releasing joint (7) and the oil pipe (8) are sequentially connected, and the packer (5) is arranged on the oil pipe nipple (4) to ensure that a water layer is reliably blocked; when the pump is checked, a water-proof oil production pipe column does not need to be lifted, and the situation that the oil layer is polluted by the water flowing out from the damaged section of the casing pipe in a backward flow mode can be effectively prevented; the water-proof oil production pipe can be smoothly salvaged.
Description
Technical field
The utility model relates to a kind of oil field oil production technology device, the process unit that the oil well water proof of particularly sleeve pipe damage, the water logging of oil reservoir top recovers the oil.Specifically, be a kind of anti-water proof oil recovery completion tubular column and device of pouring in down a chimney that is applicable to water outlet of reservoir top and casing damage section water outlet cased hole completion.
Background technology
Through the long period oil recovery, down-hole casing is damaged, the increasing very big Oilfield developing that influenced of this casing damaged well.Cause big section casing collapse as reasons such as oil reservoir upper sleeve corrosion, formation water enters oil well, often adopts methods such as machine plugging, casing patching technology to carry out water blockoff.For low yield poor efficiency well, adopt casing patching measure cost too high, so this class casing damaged well mainly adopts water pack off.Main way is on oil reservoir top, and the intact place of the sleeve pipe of water layer bottom is provided with packer, but exists each inspection pump all need trip out the problem of packer, shortened every the cycle of adopting, easily caused water layer to pour in down a chimney and polluted reservoir, and repeatedly repeatedly after, cause the section of setting corrosion, can't recover the oil by water proof.For addressing the above problem, the domestic support releasing type of also having used is prevented pouring in down a chimney every adopting tubing string and permanent packer every adopting tubing string, and the former requires pit shaft must handle to the artificial bottom of a well complex procedures; The latter salvages difficulty after seal failure, easily cause down-hole accident, and the tubing string of giving up usually adopts is rubber sealing, and owing to reasons such as burn into wearing and tearing, rubber sealing lost efficacy easily.
Summary of the invention
The purpose of this utility model provides a kind ofly anti-pours in down a chimney water proof oil recovery completion tubular column and device, guarantees that the shutoff water layer is reliable thereby reach; Inspection need not trip out the water proof flow string during pump, can prevent effectively that the water outlet of casing damage section from pouring in down a chimney polluted reservoir; Can salvage the water proof flow string smoothly.What overcome that the existing mechanical water-plugging technology exists sets complexity, deblocking difficulty; Sealing effectiveness is undesirable; From well, trip out packer during the inspection pump, cause that water layer pours in down a chimney and the deficiency of polluted reservoir.
The utility model is achieved in that
Comprise that mother blocks up 1, prevents pouring in down a chimney valve 2, grappling 3, tubing nipple 4, packer 5, sealed tube 6, back-off sub 7, oil pipe 8, mother blocks up 1, prevents that pouring in down a chimney valve 2, grappling 3, tubing nipple 4, sealed tube 6, back-off sub 7, oil pipe 8 connects successively, is equipped with packer 5 on tubing nipple 4.
Female stifled 1, anti-connection of pouring in down a chimney between valve 2, grappling 3, tubing nipple 4, sealed tube 6, back-off sub 7, the oil pipe 8 is all adopted and is threaded.
The structure of water proof production packer 5 is: be with a cartridge leather cup respectively in the bottom of last packing element 18 tops and lower rubber cylinder 19, promptly go up the upper and lower cartridge leather cup 17,20 of cartridge leather cup, upper center tube 16 lower ends connect to carry on the hydraulic setting separates sealing mechanism.
Putting forward the structure of separating sealing mechanism on the hydraulic setting is: lower center tube 23 is threaded in the upper center tube lower end, the lower center tube lower end is connected with fluid cylinder 25, upper piston 26 is arranged in the last fluid cylinder, lower center tube is with jump ring tank liquor cylinder 21 outward, jump ring tank liquor cylinder interior has the jump ring groove, jump ring 24 is between lower center tube and jump ring tank liquor cylinder, and deblocking blind rivet 22 is in the upper end of lower center tube, and deblocking blind rivet 22 is that jump ring and lower center tube are linked together.
Advantage of the present utility model is
1, inspection only need trip out the above part of sealing intubate during pump, need not trip out the water proof flow string, can prevent effectively that the water outlet of casing damage section from pouring in down a chimney polluted reservoir;
2, used twin packer, packer is set upright mutually, and the mode that adopts the shaft bottom to support has simultaneously guaranteed the shutoff reliability;
3, adopt sealing intubate butt joint oil recovery flow string, effectively eliminated of the influence of tubing string wriggling, prolonged every the cycle of adopting to packing element;
4, available slip socket is pulled down-hole water proof flow string out smoothly.
5, the sealed tube intubate adopts metallic seal form, no rubber consumable accessory.
6, anchoring device anchoring string, bidirectional bearing need not be handled pit shaft to the artificial bottom of a well.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the structural representation of the utility model packer 5.
The specific embodiment
As shown in Figure 1, the down-hole water proof flow string combination of employing mainly is from top to bottom: oil pipe 8, back-off sub 7, sealed tube 6, packer 5, tubing nipple 4, packer 5, grappling 3, anti-valve 2, female stifled 1 composition of pouring in down a chimney.More than each ingredient all adopt and be threaded.Prevent that pouring in down a chimney valve 2 is arranged on oil reservoir top.Back-off sub 7, sealed tube 6, packer 5, tubing nipple 4 and packer 5, grappling 3 are arranged between water layer and the oil reservoir.But the supporting use of twin packer overcomes owing to reasons such as packer quality, and during a cover inefficacy that packer can not set or other reason causes therein, an other cover packer can remain valid; Simultaneously, twin packer has the effect of setting upright mutually, has guaranteed the functional reliability of packer sealing spare; Secondly twin packer is born bidirection press in the tubing string respectively, guarantees sealing function.Grappling 3 can be anchored to tubing string pit shaft optional position, bidirectional bearing.Anti-use of pouring in down a chimney valve 2 has effectively prevented in the inspection pump process because polluted reservoir is poured in down a chimney in the water outlet of the damaged section of water outlet of upper layer position and upper sleeve.
As shown in Figure 2, can to adopt our company be the water proof custom-designed water proof production packer that recovers the oil to described packer.The structure of water proof production packer is: mainly by top connection, box cupling, upper center tube, go up to carry on packing element, lower rubber cylinder and the hydraulic setting and separate sealing mechanism and form.Its architectural feature is: top connection is threaded with box cupling.The box cupling bottom connects upper center tube.Be with two packing elements on the upper center tube outer wall, promptly go up packing element and lower rubber cylinder.In order to increase sealing effectiveness and protection packing element, be with a cartridge leather cup respectively in the bottom of last packing element 18 tops and lower rubber cylinder 19, promptly go up the upper and lower cartridge leather cup 17,20 of cartridge leather cup.Upper center tube 16 lower ends connect to carry on the hydraulic setting separates sealing mechanism.Putting forward the structure of separating sealing mechanism on the hydraulic setting is: lower center tube 23 is threaded in the upper center tube lower end, the lower center tube lower end is connected with fluid cylinder 25, upper piston 26 is arranged in the last fluid cylinder, lower center tube is with jump ring tank liquor cylinder 21 outward, jump ring tank liquor cylinder interior has the jump ring groove, and jump ring 24 is between lower center tube and jump ring tank liquor cylinder.Deblocking blind rivet 22 is in the upper end of lower center tube, and the deblocking blind rivet is that jump ring and lower center tube are linked together.This packer adopts the working method of shaft bottom support, hydraulic setting, upper lifting pipe post deblocking.Adopt oil pipe that packer is lowered in the sleeve pipe, after supporting to the shaft bottom, when well head applied fluid pressure from oil pipe, liquid promoted to go up fluid cylinder 25, simultaneously, following fluid cylinder 27 is broken stop screw 29, fluid cylinder 25 in the promotion, and last fluid cylinder 25 promotes jump ring tank liquor cylinder 21 up and compression packing elements 18,19, simultaneously, strut cartridge leather cup 17,20, realize packer packing oil removal, sleeve pipe annular space.At this moment, jump ring 24 and 21 engagements of jump ring tank liquor cylinder, retaining mechanism enters locking state, prevents that packing element and packing element leather cup from setting the back and becoming flexible.During the packer deblocking, only need the upper lifting pipe post, break the deblocking blind rivet 22 that connects packer lower center tube 23 and jump ring 24, retaining mechanism lost efficacy, under the effect of packing element elastic restoring force, jump ring tank liquor cylinder 21 is descending with respect to packer lower center tube 23 with jump ring 24, the packer deblocking.
This packer mainly is threaded with box cupling 15 by top connection 14, box cupling 15 bottoms connect upper center tube 16, be with two packing elements on upper center tube 16 outer walls, promptly go up packing element 18 and lower rubber cylinder 19, upper center tube 16 lower ends connect to carry on the hydraulic setting separates sealing mechanism;
Putting forward the structure of separating sealing mechanism on the hydraulic setting is: lower center tube 23 is threaded in lower center tube 16 lower ends, lower center tube 23 lower ends are connected with fluid cylinder 25, in the last fluid cylinder 25 upper piston 26 is arranged, the lower center tube 23 outer jump ring tank liquor cylinders 21 that are with, there is the jump ring groove jump ring tank liquor cylinder 21 inside, jump ring 24 is between lower center tube 23 and jump ring tank liquor cylinder 21, bottom at upper piston 26 connects lower piston 28, there is following fluid cylinder 27 lower piston 28 outsides, following fluid cylinder 27 is identical with upper piston 26 with last fluid cylinder 25 with lower piston 28 structures, deblocking blind rivet 22 is in the upper end of lower center tube 23, and deblocking blind rivet 22 links together jump ring 24 and lower center tube 23.Stop screw 29 has been fixed on hold-doun nut 30 and following fluid cylinder 27, and hold-doun nut 30 is rising by screwed connection with lower piston 28.
This packer adopts the working method of anchoring device support, hydraulic setting, upper lifting pipe post deblocking.Adopting external diameter is that φ 73.03mm oil pipe is lowered to the Y541 packer in the φ 139.7mm sleeve pipe, when well head applies fluid pressure from oil pipe, liquid promotes to go up fluid cylinder 25, simultaneously, following fluid cylinder 27 is broken stop screw 29, and fluid cylinder 25 in the promotion, last fluid cylinder 25 promotes jump ring tank liquor cylinder 21 up and compression packing elements 18,19, simultaneously, strut cartridge leather cup 17,20, realize packer packing oil removal, sleeve pipe annular space.At this moment, jump ring 24 and 21 engagements of jump ring tank liquor cylinder, retaining mechanism enters locking state, prevents that packing element and packing element leather cup from setting the back and becoming flexible.During the packer deblocking, only need the upper lifting pipe post, break the deblocking blind rivet 22 that connects packer lower center tube 23 and jump ring 24, retaining mechanism lost efficacy, under the effect of packing element elastic restoring force, jump ring tank liquor cylinder 21 is descending with respect to packer lower center tube 23 with jump ring 24, the packer deblocking.
Claims (4)
1. anti-water proof oil recovery completion tubular column and the device of pouring in down a chimney, comprise female stifled (1), anti-valve (2), grappling (3), tubing nipple (4), packer (5), sealed tube (6), back-off sub (7), the oil pipe (8) of pouring in down a chimney, it is characterized in that: female stifled (1), the anti-valve (2), grappling (3), tubing nipple (4), sealed tube (6), back-off sub (7), oil pipe (8) of pouring in down a chimney connect successively, and packer (5) is housed on tubing nipple (4).
2. according to claim 1ly anti-pour in down a chimney water proof oil recovery completion tubular column and device, it is characterized in that: female stifled (1), anti-connection of pouring in down a chimney between valve (2), grappling (3), tubing nipple (4), sealed tube (6), back-off sub (7), the oil pipe (8) are all adopted and are threaded.
3. anti-pour in down a chimney water proof oil recovery completion tubular column and device according to claim 1, it is characterized in that: the structure of water proof production packer (5) is: the bottom at last packing element (18) top and lower rubber cylinder (19) is with a cartridge leather cup respectively, promptly go up the upper and lower cartridge leather cup of cartridge leather cup (17), (20), upper center tube (16) lower end connects to carry on the hydraulic setting separates sealing mechanism.
4. anti-pour in down a chimney water proof oil recovery completion tubular column and device according to claim 3, it is characterized in that: putting forward the structure of separating sealing mechanism on the hydraulic setting is: lower center tube (23) is threaded in the upper center tube lower end, lower center tube (23) lower end is connected with fluid cylinder (25), upper piston (26) is arranged in the last fluid cylinder, the outer jump ring tank liquor cylinder (21) that is with of lower center tube (23), jump ring tank liquor cylinder interior has the jump ring groove, jump ring (24) is between lower center tube (23) and jump ring tank liquor cylinder, deblocking blind rivet (22) is in the upper end of lower center tube, and deblocking blind rivet (22) links together jump ring and lower center tube (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201037511U CN201013300Y (en) | 2007-03-07 | 2007-03-07 | Anti-backflow water-proof oil production well completion pipe string and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201037511U CN201013300Y (en) | 2007-03-07 | 2007-03-07 | Anti-backflow water-proof oil production well completion pipe string and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201013300Y true CN201013300Y (en) | 2008-01-30 |
Family
ID=39025086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201037511U Expired - Lifetime CN201013300Y (en) | 2007-03-07 | 2007-03-07 | Anti-backflow water-proof oil production well completion pipe string and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201013300Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507845A (en) * | 2015-12-31 | 2016-04-20 | 中国石油天然气股份有限公司 | Long-acting oil-separating packer for oil field |
| CN105545255A (en) * | 2015-12-31 | 2016-05-04 | 中国石油天然气股份有限公司 | Novel long-acting oil-separating production pipe column for oil field |
| CN106968646A (en) * | 2010-12-17 | 2017-07-21 | 韦尔泰克有限公司 | Completion system |
| CN110965958A (en) * | 2019-11-26 | 2020-04-07 | 宝鸡瑞林石油机电设备有限责任公司 | Bidirectional seat seal backflow-preventing packer |
| CN111472690A (en) * | 2020-04-03 | 2020-07-31 | 中国石油天然气股份有限公司 | Sidetracking well completion method |
-
2007
- 2007-03-07 CN CNU2007201037511U patent/CN201013300Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968646A (en) * | 2010-12-17 | 2017-07-21 | 韦尔泰克有限公司 | Completion system |
| CN105507845A (en) * | 2015-12-31 | 2016-04-20 | 中国石油天然气股份有限公司 | Long-acting oil-separating packer for oil field |
| CN105545255A (en) * | 2015-12-31 | 2016-05-04 | 中国石油天然气股份有限公司 | Novel long-acting oil-separating production pipe column for oil field |
| CN105545255B (en) * | 2015-12-31 | 2018-05-04 | 中国石油天然气股份有限公司 | Novel long-acting oil-separating production pipe column for oil field |
| CN110965958A (en) * | 2019-11-26 | 2020-04-07 | 宝鸡瑞林石油机电设备有限责任公司 | Bidirectional seat seal backflow-preventing packer |
| CN111472690A (en) * | 2020-04-03 | 2020-07-31 | 中国石油天然气股份有限公司 | Sidetracking well completion method |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080130 |