CN202755957U - Constant proportion dropping-fishing-free seperated layer water injection technique tubular pipe - Google Patents
Constant proportion dropping-fishing-free seperated layer water injection technique tubular pipe Download PDFInfo
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- CN202755957U CN202755957U CN 201220398884 CN201220398884U CN202755957U CN 202755957 U CN202755957 U CN 202755957U CN 201220398884 CN201220398884 CN 201220398884 CN 201220398884 U CN201220398884 U CN 201220398884U CN 202755957 U CN202755957 U CN 202755957U
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- water injection
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Abstract
The utility model provides a constant proportion dropping-fishing-free seperated layer water injection technique tubular pipe so as to overcome the shortcomings that dropping-fishing is difficult and requirements for water injection can not be met when an existing seperated layer water injection tubular pipe is applied to a deep well, a highly-deviated well and a horizontal well. A packer I, a dropping-fishing-free quantitative water distributor I, a packer II, a dropping-fishing-free quantitative water distributor II and a ball seat are fixedly connected through oil pipes and mounted in sequence from top to bottom; the dropping-fishing-free quantitative water distributor I is located on a water injection layer I, the dropping-fishing-free quantitative water distributor II is located on the water injection layer II, the upper end of the packer I is connected with a wellhead Christmas tree through a pipeline; one end of a constant flow water distribution device is connected with a water injection pipeline; the other end of the constant flow water distribution device is connected with the wellhead Christmas tree. The constant proportion dropping-fishing-free seperated layer water injection technique tubular pipe has the advantages of integrating the functions of seperated layer water injection and backflow prevention, being advanced in performance, simple and convenient to operate, time-saving and labor-saving, prolonging service life of the tubular pipe, prolonging water changing working cycle, and being safe and reliable in performance of the technique tubular pipe.
Description
Technical field
The utility model relates to the layered water injection process pipe column that a kind of water injection well is used, and especially relates to a kind of certainty ratio casting-and-fishing-free separated layer water injection process pipe string of using in deep-well, high angle hole, horizontal well.
Background technology
In the various technological measures of oil development, getting well with bad of flood effectiveness directly has influence on the effect of the exploitation of recovering the oil, and also is directly connected to the length in stable yields cycle and the height of recovery ratio.Particularly along with the oil field enters the high water-cut development later stage, particularly thorny in interlayer, the layer, seperated layer water injection (abbreviation dispensing) plays conclusive effect as the technical way of water filling always.
At present, layered water injection process pipe column generally adopts conventional eccentric center water-distributing or bridge-type eccentric injection allocation moisture to annotate tubing string.This tubing string is tested and pulling water nozzle allotment water injection rate by steel wire operation, satisfy the demand of two sections of one-levels or the above separate water injection well of two-stage three-segment, reached the order of subdivision of reservoir water filling, injecting enough water, injecting good water and Effective water injection, application technology is ripe in the conventional well of oil field, and success rate is high.But the dispensing well for deep-well, high angle hole, horizontal well or fouling, seriously corroded, implement oil pipe eccentric separated-injection technique owing to being subjected to the restriction of hole condition condition, when carrying out zonal testing and changing water nozzle, the pulling difficulty, the wire Launching and Bailing operation is prone to card, falls accident, and the pulling success rate is low to cause the tubing string life-span short, and it is frequent that water changes operation, can't satisfy the water filling demand, and increase cost of production.
The utility model content
In deep-well, high angle hole, horizontal well, use the pulling difficulty that exists in order to overcome existing separate layer water injection string, the wire Launching and Bailing operation is prone to card, falls accident, the pulling success rate is low to cause the tubing string life-span short, it is frequent that water changes operation, can't satisfy the deficiencies such as water filling demand, the utility model provides a kind of certainty ratio casting-and-fishing-free separated layer water injection process pipe string.This certainty ratio casting-and-fishing-free separated layer water injection process pipe string is particularly useful for the seperated layer water injection operation of deep-well, high angle hole, horizontal well.
The technical scheme that its technical problem that solves the utility model adopts is: the packer I of certainty ratio casting-and-fishing-free separated layer water injection process pipe string, casting and dragging free quantitative water distributor I, packer II, casting and dragging free quantitative water distributor II, ball seat assembly are from top to bottom by the oil pipe installation that is fixedly connected sequentially; Casting and dragging free quantitative water distributor I is positioned at water filling layer I, and casting and dragging free quantitative water distributor II is positioned at water filling layer II; The upper end of packer I is connected with the well head production tree by oil pipe; One end of constant-current water-mixing device is connected with waterflood-transmission line, and the other end is connected with the well head production tree.The upper end of packer I is equipped with the insert-seal device.
The beneficial effects of the utility model are, integrate seperated layer water injection, anti-returning told function, and be advanced in performance, and easy and simple to handle, time saving and energy saving, have improved the tubing string life-span, have prolonged water and have changed duty cycle, and the process pipe string performance safety is reliable.
Description of drawings
Fig. 1 is the utility model certainty ratio casting-and-fishing-free separated layer water injection process pipe string structural representation.
Among the figure: 31. well head production trees, 32. constant-current water-mixing devices, 33. insert-seal devices, 34. packer I, 35. casting and dragging free quantitative water distributor I, 36. packer II, 37. casting and dragging free quantitative water distributor II, 38. oil pipes, 39. the ball seat assembly, 40. water filling layer I, 50. water filling layer II.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.But what those skilled in the art should know is to the invention is not restricted to the listed specific embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
Referring to accompanying drawing.The utility model certainty ratio casting-and-fishing-free separated layer water injection process pipe string, packer I 34, casting and dragging free quantitative water distributor I 35, packer II 36, casting and dragging free quantitative water distributor II 37, ball seat assembly 39 are from top to bottom by oil pipe 38 installation that is fixedly connected sequentially; Casting and dragging free quantitative water distributor I 35 is positioned at water filling layer I 40, and casting and dragging free quantitative water distributor II 37 is positioned at water filling layer II 50; The upper end of packer I 34 is connected with well head production tree 31 by oil pipe 38; One end of constant-current water-mixing device 32 is connected with waterflood-transmission line, and the other end is connected with well head production tree 31.
The upper end of packer I 34 is equipped with insert-seal device 33, and insert-seal device 33 is used for being lowered to and set packer I 34; Packer I 34 is hydraulic base sealed, bi-directional slip formula packer.Before going into the well, insert-seal 33 is inserted in the packer I 34, go into the well with tubing string after being combined into one.Oil pipe is suppressed and is made slips open grappling, and the compression packing element is setting, the sealing oil sets annular space, and after setting pressure was laid down, lock portion was locked in the setting position firmly with packer, does not return.
Packer II 36 is a kind of without slips, from anchored pressure difference formula packer, mainly contain setting part, packing element hermetic unit, on carry deblocking and partly form.Its principle is that oil pipe is suppressed, and opens setting opening valve, and liquid enters in the packing element and makes the packing element spreading, the sealing oil sets annular space.After setting pressure was laid down, opening valve was closed, and packer keeps sealing state.
When using the utility model construction operation, at first with precalculated position under the certainty ratio casting-and-fishing-free separated layer water injection process pipe string lower going-into-well, wherein insert-seal 33 is located by connecting in ground insertion packer I 34 interior sealings and is integrated; By ground pump truck pressurization, set packer I 34 and packer II 36; Continue pressurization, cut off the shear pin in the casting and dragging free quantitative water distributor II 37, open the waterflood path of casting and dragging free quantitative water distributor II 37.
During water filling, 32 accurate measurements of well head constant-current water-mixing device and allotment water filling total amount, down-hole casting and dragging free quantitative water distributor I 35 and casting and dragging free quantitative water distributor II 37 are carried out water filling by the water injection rate allocation proportion that arranges.
The utility model certainty ratio casting-and-fishing-free separated layer water injection process pipe string is compared with the bridge-type eccentric separate layer water injection string of routine and is had the following advantages: 1, directly water filling behind the construction operation, need not the pulling blanking plug, total water injection rate is accurately controlled by the well head constant flow water injection mandrel, each layer injection allocation amount is controlled by the casting and dragging free quantitative water distributor according to the stratum uptake, realized deep-well, the seperated layer water injection that high angle hole and the horizontal well down-hole one-level under cover guarantor state is two sections, also satisfied simultaneously the corrosion and scaling well, sand output wells etc. do not possess the requirement that pulling is measured two sections cover guarantors of water injection well one-level down-hole dispensing of condition, and not pulling is measured the seperated layer water injection that namely realizes special water injection well; 2, have anti-returning with the casting and dragging free quantitative water distributor of string matching and tell function, after namely water injection well stopped annotating, injection well downhole flow regulator cut out the aquaporin of crossing that is connected with the oil jacket annular space, formation fluid can not be returned tell in the oil pipe, thereby reached the purpose that prevents reservoir sand obstruction water nozzle.Therefore, the utility model integrates seperated layer water injection, anti-returning told function, and is advanced in performance and easy and simple to handle, time saving and energy saving, improved the tubing string life-span, prolonged water and changed duty cycle; The process pipe string performance safety is reliable.
It should be noted that above-described embodiment is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (2)
1. a certainty ratio casting-and-fishing-free separated layer water injection process pipe string comprises waterflood-transmission line, well head production tree, packer, oil pipe, it is characterized in that:
Packer I(34), casting and dragging free quantitative water distributor I(35), packer II (36), casting and dragging free quantitative water distributor II (37), ball seat assembly (39) are from top to bottom by oil pipe (38) installation that is fixedly connected sequentially;
Described casting and dragging free quantitative water distributor I(35) be positioned at water filling layer I(40), described casting and dragging free quantitative water distributor II (37) is positioned at water filling layer II (50);
Described packer I(34) upper end is connected with well head production tree (31) by oil pipe (38); One end of constant-current water-mixing device (32) is connected with waterflood-transmission line, and the other end is connected with well head production tree (31).
2. described certainty ratio casting-and-fishing-free separated layer water injection process pipe string according to claim 1, it is characterized in that: upper end described packer I(34) is equipped with insert-seal device (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220398884 CN202755957U (en) | 2012-08-13 | 2012-08-13 | Constant proportion dropping-fishing-free seperated layer water injection technique tubular pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220398884 CN202755957U (en) | 2012-08-13 | 2012-08-13 | Constant proportion dropping-fishing-free seperated layer water injection technique tubular pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202755957U true CN202755957U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220398884 Withdrawn - After Issue CN202755957U (en) | 2012-08-13 | 2012-08-13 | Constant proportion dropping-fishing-free seperated layer water injection technique tubular pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202755957U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590796A (en) * | 2012-08-13 | 2014-02-19 | 大港油田集团有限责任公司 | Constant proportion dropping-fishing-free separated layer water injection technique tubular pipe and dropping-fishing-free quantitative water distributors |
| CN109322645A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | Horizontal well sectional water injection process pipe column and allocation method thereof |
-
2012
- 2012-08-13 CN CN 201220398884 patent/CN202755957U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590796A (en) * | 2012-08-13 | 2014-02-19 | 大港油田集团有限责任公司 | Constant proportion dropping-fishing-free separated layer water injection technique tubular pipe and dropping-fishing-free quantitative water distributors |
| CN103590796B (en) * | 2012-08-13 | 2017-06-13 | 大港油田集团有限责任公司 | Certainty ratio casting-and-fishing-free separated layer water injection process pipe string and casting and dragging free quantitative water distributor |
| CN109322645A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | Horizontal well sectional water injection process pipe column and allocation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Three Dagang oil field, Tianjin, Grand Port, No. 300280 Patentee after: Dagang Oil Field Group Co., Ltd. Patentee after: DRILLING TECHNOLOGY DEVELOPMENT COMPANY, TIANJIN DAGANG OILFIELD RESEARCH INSTITUTE OF PETROLEUM ENGINEERING Address before: Three Dagang oil field, Tianjin, Grand Port, No. 300280 Patentee before: Dagang Oil Field Group Co., Ltd. Patentee before: Tianjin Dagang Oilfield Drilling Technology Development Co., Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130227 Effective date of abandoning: 20170613 |