CN201206458Y - Controllable switch hole sliding bush assembly - Google Patents
Controllable switch hole sliding bush assembly Download PDFInfo
- Publication number
- CN201206458Y CN201206458Y CNU2008201169642U CN200820116964U CN201206458Y CN 201206458 Y CN201206458 Y CN 201206458Y CN U2008201169642 U CNU2008201169642 U CN U2008201169642U CN 200820116964 U CN200820116964 U CN 200820116964U CN 201206458 Y CN201206458 Y CN 201206458Y
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- Prior art keywords
- hole
- sliding sleeve
- liquid flow
- flow hole
- fluid flowing
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Abstract
The utility model relates to a sliding sleeve assembly for a controllable switch hole capable of achieving the well completion of a segmented controlling horizontal well and mining. Annular inner step faces are respectively arranged at both ends of a sliding sleeve (5); an upper pressure transmitting hole (2) and a lower pressure transmitting hole (10) on a main body (11) are respectively communicated with both ends of an annulus (3); and an external fluid flowing hole (6) is opposite to an internal fluid flowing hole (7) on the same radial section. Before a pin (9) is not cut off, a middle fluid flowing hole (8), the external fluid flowing hole (6) and the internal fluid flowing hole (7) are staggered and opposite to a pressure balance hole on the main body (11); and the distance from the left end of the middle fluid flowing hole (8) to the left ends of the internal fluid flowing hole (7) and the external fluid flowing hole (6) is less than or equal to the distance from the upper end face of the sliding sleeve to the upper end face of the annulus (3). By adopting the sliding sleeve assembly, the lower pressure transmitting hole (10) and the upper pressure transmitting hole (2) are respectively pressed to open and close the sliding sleeve assembly for the controllable switch hole, thereby realizing the well completion of the segmented controlling horizontal well and mining.
Description
Technical field
The utility model relates to a kind of horizontal well completion instrument of oil-gas mining sectional control, particularly a kind of controllable switch hole sliding sleeve assembly.
Background technology
The completion mode of horizontal well is mainly cutting seam sieve tube completion, well cementation completion and barefoot completion.From the back oil recovery condition of production of going into operation, the effect that the application level well development can obtain in fractured reservoir can't test with the situation of shutoff but the simple horizontal well that adopts cutting seam sieve tube to finish has occurred crossing early leaving, cause the early stage stopping production of horizontal well to be scrapped thus.The cementing well completion can satisfy acid fracturing and carry out the requirement that interlayer is separated shutoff gas cut water enchroachment (invasion).But cause the obstruction in crack easily at low pressure leakiness and fractured reservoir, thereby greatly reduce the oil pump capacity of intrinsic fracture oil reservoir, particularly low yield poor efficiency oil field is not suitable for adopting this method.Barefoot completion be only applicable to indivedual conditions better, do not have water enchroachment (invasion), need not acid fracturing, the horizontal well of hole stability.Reasonable method is to adopt segmentation controlling level well completion, and segmentation controlling level well completion has dual mode: a kind of is to adopt screen casing to add multistage external packer of pipe completion, is used the segmentation control that realizes oil reservoir with flow string; Another kind is to adopt sleeve pipe and controllable switch hole sliding sleeve to add the completion of multistage external packer of pipe, utilizes the switch of gauge tap hole sliding sleeve to realize the oil reservoir segmentation is controlled.
Summary of the invention
The utility model provides a kind of controllable switch hole sliding sleeve assembly, realizes segmentation controlling level well completion, solves the problem in the background technology.
A kind of controllable switch hole sliding sleeve assembly mainly is made up of joint, sleeve, sliding sleeve, body, pin etc.Body is connected with lower end, the joint of sleeve, and the sleeve other end is connected with joint and seals with encapsulant.Sliding sleeve places in the annular space that body and sleeve surround, and on body, respectively there is step surface in the annular at the two ends of sliding sleeve by dowel fixes in the sliding sleeve bottom.Have the outer liquid flow hole of some axial symmetries on the sleeve, have the middle liquid flow hole of some axial symmetries on the sliding sleeve, have the interior liquid flow hole of some axial symmetries on the body.Interior liquid flow hole, outer liquid flow hole two ends and middle liquid flow hole lower end are sealed by encapsulant, and outer liquid flow hole is relative on same radial section with interior liquid flow hole; The annular space length that body and sleeve surrounded is greater than the length of sliding sleeve, before pin is not cut off, in liquid flow hole stagger with outer liquid flow hole, interior liquid flow hole and relative with pressure compensation opening on the body, therefrom the liquid flow hole left end arrives the distance of interior liquid flow hole, outer liquid flow hole left end smaller or equal to the distance of sliding sleeve upper surface apart from the annular space upper surface.Last pressure transmission hole on the body, following pressure transmission hole are communicated with the two ends of annular space respectively.
Major advantage of the present utility model is: the utility model is simple in structure, flexible and convenient to use, cooperate sliding sleeve special switch instrument and orientation tool thereof to be used and to open or close controllable switch hole sliding sleeve assembly, realize segmentation controlling level well completion and exploitation.
Description of drawings
Fig. 1, the utility model reset condition structural representation
Fig. 2, the utility model open mode structural representation
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
A kind of controllable switch hole sliding sleeve assembly as described in Figure 1 mainly is made up of joint 1, sleeve 4, sliding sleeve 5, body 11, pin 9 etc.Body 11 is connected with lower end, the joint 1 of sleeve 4, and sleeve 4 other ends are connected with joint 1 and seal with encapsulant.Sliding sleeve 5 places in the annular space 2 that body 11 and sleeve 4 surround, and sliding sleeve 5 bottoms are fixed on the body 11 by pin 9, and respectively there is step surface in the annular at the two ends of sliding sleeve 5.Have the outer liquid flow hole 6 of some axial symmetries on the sleeve 4, have the middle liquid flow hole 8 of some axial symmetries on the sliding sleeve, have the interior liquid flow hole 7 of some axial symmetries on the body.Interior liquid flow hole 7, outer liquid flow hole 6 two ends and middle liquid flow hole 8 lower ends are sealed by encapsulant, and outer liquid flow hole 6 is relative on same radial section with interior liquid flow hole 7; Annular space 3 length that body 11 and sleeve 4 are surrounded are greater than the length of sliding sleeve 5, before pin 9 is not cut off, in liquid flow hole 8 stagger with outer liquid flow hole 6, interior liquid flow hole 7 and relative with pressure compensation opening on the body 11, therefrom liquid flow hole 8 left ends arrive the distance of interior liquid flow hole 7, outer liquid flow hole 6 left ends smaller or equal to the distance of sliding sleeve 5 upper surfaces apart from annular space 3 upper surfaces.Last pressure transmission hole 2 on the body 11, following pressure transmission hole 10 are communicated with the two ends of annular space 3 respectively.
The utility model embodiment is:
1) unfolding mode
Be lowered to sliding sleeve special switch instrument assembly, utilize orientation tool to sliding sleeve special switch tool positioned, press down following pressure transmission hole 10 two ends of sliding sleeve special switch instrument assembly then with seal body 11, build the pressure afterwards, pressure passes to sliding sleeve 5 lower ends from following pressure transmission hole 10, pin on the sliding sleeve 5 is cut off, sliding sleeve 5 moves up, controllable switch hole sliding sleeve assembly is opened in middle liquid flow hole 8 when moving to certain position on the sliding sleeve 5 and the interior liquid flow hole 7 on the body 11 and 6 alignment of the outer liquid flow hole on the sleeve 4.
2) close mode
Be lowered to sliding sleeve special switch instrument assembly, utilize orientation tool to sliding sleeve special switch tool positioned, press down last pressure transmission hole 2 two ends of sliding sleeve special switch instrument assembly then with seal body 11, build the pressure afterwards, pressure passes to sliding sleeve 5 upper ends from last pressure transmission hole 2, sliding sleeve 5 moves down, and middle liquid flow hole 8 when moving to certain position on the sliding sleeve 5 and the interior liquid flow hole 7 on the body 11 and the outer liquid flow hole 6 on the sleeve 4 stagger, and close controllable switch hole sliding sleeve assembly.
Claims (1)
1. a controllable switch hole sliding sleeve assembly mainly is made up of joint (1), sleeve (4), sliding sleeve (5), body (11), pin (9) etc.; Body (11) is connected with lower end, the joint (1) of sleeve (4), and sleeve (4) other end is connected with joint (1), and sliding sleeve (5) places in the annular space (3) that body (11) and sleeve (4) surround; It is characterized in that: sliding sleeve (5) bottom is fixed on the body (11) by pin (9), and respectively there is step surface in the annular at the two ends of sliding sleeve (5); The outer liquid flow hole (6) that some axial symmetries are arranged on the sleeve (4), the middle liquid flow hole (8) that some axial symmetries are arranged on the sliding sleeve (5), the interior liquid flow hole (7) that some axial symmetries are arranged on the body (11), the last pressure transmission hole (2) on the body (11), following pressure transmission hole (10) are communicated with the two ends of annular space (3) respectively; Outer liquid flow hole (6) is relative on same radial section with interior liquid flow hole (7); Before pin (9) is not cut off, middle liquid flow hole (8) staggers with outer liquid flow hole (6), interior liquid flow hole (7), and therefrom liquid flow hole (8) left end arrives the distance of interior liquid flow hole (7), outer liquid flow hole (6) left end smaller or equal to the distance of sliding sleeve (5) upper surface apart from annular space (3) upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201169642U CN201206458Y (en) | 2008-05-22 | 2008-05-22 | Controllable switch hole sliding bush assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201169642U CN201206458Y (en) | 2008-05-22 | 2008-05-22 | Controllable switch hole sliding bush assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201206458Y true CN201206458Y (en) | 2009-03-11 |
Family
ID=40465525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201169642U Expired - Lifetime CN201206458Y (en) | 2008-05-22 | 2008-05-22 | Controllable switch hole sliding bush assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201206458Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236225A (en) * | 2018-09-04 | 2019-01-18 | 成都北方石油勘探开发技术有限公司 | A kind of horizontal well adjusts flow control water conservancy project to have automatically |
| CN111827953A (en) * | 2020-08-31 | 2020-10-27 | 中国石油天然气集团有限公司 | Downhole sand throwing tool for well drilling |
-
2008
- 2008-05-22 CN CNU2008201169642U patent/CN201206458Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236225A (en) * | 2018-09-04 | 2019-01-18 | 成都北方石油勘探开发技术有限公司 | A kind of horizontal well adjusts flow control water conservancy project to have automatically |
| CN109236225B (en) * | 2018-09-04 | 2023-10-13 | 成都北方石油勘探开发技术有限公司 | Automatic flow-regulating and controlling water tool for horizontal well |
| CN111827953A (en) * | 2020-08-31 | 2020-10-27 | 中国石油天然气集团有限公司 | Downhole sand throwing tool for well drilling |
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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: 20090311 |
|
| CX01 | Expiry of patent term |