CN202531161U - Locating device for layered water injection with small clamping distance - Google Patents
Locating device for layered water injection with small clamping distance Download PDFInfo
- Publication number
- CN202531161U CN202531161U CN2012201111084U CN201220111108U CN202531161U CN 202531161 U CN202531161 U CN 202531161U CN 2012201111084 U CN2012201111084 U CN 2012201111084U CN 201220111108 U CN201220111108 U CN 201220111108U CN 202531161 U CN202531161 U CN 202531161U
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- locating
- water injection
- locating device
- locating detent
- small
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Abstract
The utility model discloses a locating device for layered water injection with a small clamping distance, designed for solving the problems of small locating load, difficulty in reading, easiness for clamping a locating detent and unfolding and folding resistance of the traditional locator. The locating device mainly comprises a back-up nut, guard rings, a locating detent, a filter baffle, a high-rigidity supporting spring and the like, wherein the back-up nut and the guard rings are connected with a main body; the locating detent is arranged between the guard rings arranged at two ends; the filter baffle is arranged on the upper end of a core of the main body; and the high-rigidity supporting spring is arranged between the core and the locating detent. By using the high-rigidity supporting spring and the filter baffle provided by the locating device, the problem of observation difficulty caused by smaller reading of a weight indicator in the locating process is solved, and accurate judgment for the position of a casing coupling is ensured; and the filter baffle can be used for avoiding foreign material falling and ensuring the later test and allocation as well as the success implementation of a locating process. By utilizing the simple mechanical flexiblility principle, the accurate depth correction and seating seal of a downhole packer are realized, and the aim of layered water injection with the small clamping distance is achieved; and the locating device is small in location error, simple in process, short in production time, low in expense and safe and reliable in operation.
Description
Technical field
The utility model relates to a kind of positioner that is used for lesser calorie apart from seperated layer water injection, belongs to producing well well workover technology field.
Background technology
Cover oil reservoir at ultra-low penetration oil reservoir part block can grow a plurality of substratums, grows short lap between the substratum, and the little interlamellar spacing of part is 1～3m only, and for these oil reservoirs, packer is difficult to accurately seat envelope.Though the present dark measurement device in magnetic orientation school that adopts is accurate, exist operating expenses high, account for the long and operation of product time and require problems such as height.And on the deep foundation of magnetic orientation school, adopt mechanical positioner, be that a kind of cost is lower, the more simple and efficient lesser calorie of operation is apart from the seperated layer water injection localization method.
At present; There is following problem in conventional mechanical positioning school device deeply: location load is little; Reading difficulty in the position fixing process, locator top does not have baffle, is prone to cause in locator, met when the later stage, the end was visited in the test allotment problems such as card and locator locating detent can't shrink.
Summary of the invention
The purpose of the utility model is to provide a kind of positioner that is used for lesser calorie apart from seperated layer water injection, and it can improve and improve the orientation tool performance, realizes interlamellar spacing 1～3m subdivision injection purpose.
The concrete technical scheme of the utility model is following:
Two ends, the positioner main body outside connect respectively and are equipped with cap and retaining ring, and the tubular locating detent is located between the retaining ring of two ends.By the fuse of pin connecting band centre bore, be connected with the baffle of through hole in the fuse upper surface in the main body.Be provided with convex shoulder at the fuse external surface, between convex shoulder and locating detent inner surface, be provided with high rigidity support spring.
After this device locator elasticity locating detent gets into casing coupling, refer to that through the upper lifting pipe post casing coupling position is confirmed in the variation of restatement load, with original well logging casing coupling position versus, confirm that the following deep-seated of real well lower tubular column is put again.After accomplished the location, packer was suppressed the seat envelope, and when pressure acted on positioner, its pin was cut off, and the positioning core position moves down, and the high rigidity support spring that causes acting on the convex shoulder loses supporter, and device shrinks with locating detent.
The utility model positioner set inside support the high rigidity support spring of locating detent; Make its location load increase by 5～10kN; Thereby solved in the position fixing process because of referring to the restatement reading problem that is difficult to observe less than normal, improved reading sensitivity, guaranteed the accurate judgement of casing coupling position.Baffle is set at the locator top can limit on the one hand to be cut off on the fuse position that causes and move, can avoid foreign matter to fall on the other hand, guaranteed that the later stage tests to allocate and the successful implementation of positioning process because of fixing pin.The simple mechanical elasticity principle of this positioner utilization has guaranteed that the accurate school of downhole packer is sealed with seat deeply, has realized the purpose of lesser calorie apart from seperated layer water injection.This positioner position error is little, technology is simple, account for the product time few, expense is low and handling safety is reliable.
Description of drawings
Fig. 1 is used for the structural representation of lesser calorie apart from the positioner of seperated layer water injection;
Fig. 2 is used for the sketch map of lesser calorie apart from the baffle of the positioner of seperated layer water injection;
Fig. 3 is a process pipe string work sketch map.
The specific embodiment
Embodiment:
Embodiment with reference to Fig. 1 and 3 pairs of the utility model further specifies:
Two ends, locator main body 1 outside connect cap 2 and retaining ring 3 fully respectively, and tubular locating detent 4 is located between the two ends retaining ring 3.Main body 1 interior fuse 6 by pin 8 connecting band centre bores; Be connected with the baffle 7 of through hole in fuse 6 upper surfaces; When foreign matter fell into locator, it can effectively play barrier effect, avoided causing later stage test allotment chance card and locating detent 4 to be difficult to shrink because of foreign matter falls into.Be provided with convex shoulder at fuse 6 external surfaces; Between convex shoulder and locating detent 4 inner surfaces, be provided with high rigidity support spring 5; This spring can increase location load 5～10kN; When chance casing coupling load changes, guarantee that the weight indicator reading reads easily, thereby realize the judgement promptly and accurately of casing coupling position.
17 mouthfuls of wells of field trial, construction is compared apart from the seperated layer water injection device with the magnetic orientation lesser calorie smoothly, practices thrift 1.2 ten thousand yuan/well of cost, practices thrift engineering time 2h/ well.
As shown in Figure 3, in the work progress process pipe string by last from down adopting CQFF03 anticorrosive paint oil pipe, Y341-114 packer, KP-114 bridge-type eccentric injection well downhole flow regulator successively, presetting the process pipe string that downhole tools such as seating nipple, this mechanical positioner, double acting valve, screen casing and plug are formed.Oil pipe is washed rule leading to, well-flushing to artificial bottom of a well and is used the drift size gauge tool oil pipe with logical before going into well.The mechanical positioning device is gone into the well according to the down-hole string design; Rely on hook to press down when going into the well and be lowered to well head, on slow behind the predetermined casing coupling position, carry oil pipe, carry on when the fluctuation of weight indicator pointer increases by 20～50KN, stopping; This moment, this mechanical positioner position was the casing coupling position of institute's reference; With these data serves as according to calculating tubing string corrected value, corrected value is added tubing string measure data, and through make packer reach accurate seat envelope position at well head adjustment pipe nipple.After accomplish the location, begin to suppress the seat envelope, slow adherence pressure to 11～13MPa, pin is cut off, and locating detent discharges and shrinks, and maximum outside diameter is received to 114mm.By standard well head is installed then, exerting pressure connects the ground waterflood-transmission line after qualified, changes normal water filling over to.
Claims (1)
1. positioner that is used for lesser calorie apart from seperated layer water injection is characterized in that:
Two ends, locator main body (1) outside connect respectively and are equipped with cap (2) and retaining ring (3), and tubular locating detent (4) is located between the two ends retaining ring (3); By the fuse (6) of pin (8) connecting band centre bore, be connected with the baffle (7) of through hole in fuse (6) upper surface in the main body (1); Be provided with convex shoulder at fuse (6) external surface, between convex shoulder and locating detent (4) inner surface, be provided with high rigidity support spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201111084U CN202531161U (en) | 2012-03-22 | 2012-03-22 | Locating device for layered water injection with small clamping distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201111084U CN202531161U (en) | 2012-03-22 | 2012-03-22 | Locating device for layered water injection with small clamping distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531161U true CN202531161U (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201111084U Expired - Fee Related CN202531161U (en) | 2012-03-22 | 2012-03-22 | Locating device for layered water injection with small clamping distance |
Country Status (1)
| Country | Link |
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| CN (1) | CN202531161U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989384A (en) * | 2015-04-09 | 2015-10-21 | 中国石油集团西部钻探工程有限公司 | Spring sheet type collar locator |
-
2012
- 2012-03-22 CN CN2012201111084U patent/CN202531161U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989384A (en) * | 2015-04-09 | 2015-10-21 | 中国石油集团西部钻探工程有限公司 | Spring sheet type collar locator |
| CN104989384B (en) * | 2015-04-09 | 2018-06-05 | 中国石油集团西部钻探工程有限公司 | Spring-piece type collar locator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20210322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |