CN202451056U - Expansion tube positioning whipstock - Google Patents
Expansion tube positioning whipstock Download PDFInfo
- Publication number
- CN202451056U CN202451056U CN 201220033137 CN201220033137U CN202451056U CN 202451056 U CN202451056 U CN 202451056U CN 201220033137 CN201220033137 CN 201220033137 CN 201220033137 U CN201220033137 U CN 201220033137U CN 202451056 U CN202451056 U CN 202451056U
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- expansion
- tube
- italic
- expansion tube
- centre bore
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Abstract
The utility model relates to an expansion tube positioning whipstock, belonging to the technical field of positioning and whipstocking tools used for old well windowing sidetracking in an oil field. The expansion tube positioning whipstock consists of a variable buckle connector, an oil tube nipple, a sieve tube, a feeding slope body, a pressure-guiding tube, a whipstocking body, an expansion tube, an expansion head, a guiding tube and a bottom plug. A sealing component on the expansion tube is anchored at a windowing position through the expansion head, so that the problem that the whipstock is not hung firmly is solved; in the whipstocking process, an underground accident that a window cannot be found can be avoided; and in the expanding process, a required expansion pressure is relatively low, so that a dual aim of normal sealing and low-pressure expansion of the whipstock is achieved, the construction quality and the construction safety for sidetracking and windowing a well by using a casing pipe are effectively improved and therefore the production cost is reduced.
Description
Technical field
The utility model relates to the location that a kind of oilfield old well window sidetracking uses and leads oblique instrument, is specifically to utilize the sealing grappling technology of expansion tube in side-tracked hole, to hang the location wedge deflection tool.
Background technology
Oil well is after the long-time use of process; Because of the down-hole casing well damage, can't repair; Perhaps complex accident takes place, can't handle in the down-hole, need damage a certain appropriate depth position side-tracked hole more than the well section, needs during sidetracking be lowered in the target location in advance and fixing wedge deflection tool.The location is led oblique technology and has been experienced fixed year inclined-plane of cement, forged evolutions such as milling device, mechanical seat sealed type wedge deflection tool, hydraulic pressure pipe slips location wedge deflection tool, and using more at present is hydraulic pressure pipe slips location wedge deflection tool.Do not have Seal Design but oblique instrument is led in location such as hydraulic pressure pipe slips,, cause location wedge deflection tool slips anchoring not firm, wedge deflection tool displacement, thereby cause the sidetracking failure of windowing owing to reasons such as casing corrosion and well foulings.
The patent of ZL200320121269.2 discloses a kind of sidetracking whipstock of windowing; Its body is made up of deflecting part and anchor portion; In the lower end of whipstock anchor mechanism connection hydraulic pressure seal part; The major defect compressive resistance that exists is low, and deflecting is prone to that partly side takes place to be changeed, and the position that causes windowing can not accurately be located.
Summary of the invention
The purpose of the utility model is the accurately location defect of position of windowing that overcomes the sidetracked hole that above-mentioned prior art exists, and a kind of expansion positioning wedge deflection tool that hangs firm, good seal performance, accurate positioning is provided.
The utility model by become snapping head, tubing nipple, screen casing, send into clinohedral, connecting pipe, lead italic, expansion tube, seal, expansion-head, guide wire and stifled composition of the end; Last change snapping head bottom is stepped internal thread; Be threaded with oil pipe short circuit and screen casing respectively, screen casing places in the centre bore of oil pipe short circuit, is filter screen on the tube wall of screen casing middle part; Open upper end, lower end closed; Under become snapping head upper end and be threaded with the oil pipe short circuit, its lower end is threaded with connecting pipe through internal thread, its lower end external screw thread with send into clinohedral and be connected; Send into clinohedral with lead italic through the pin be connected; Lead the italic middle part and have centre bore and following centre bore; Pod apertures is communicated with last centre bore; Weep hole is communicated with following centre bore, leads the italic lower external thread and is threaded with expansion tube, and the interior screw thread of following centre bore of leading italic is threaded with guide wire; The sulfuration seal is installed on the outer tube wall of expansion tube, and inner tubal wall is provided with shoulder in the taper, and expansion-head is connected on the interior shoulder of the expansion tube in the annular space between expansion tube and the guide wire, and it is stifled that expansion tube lower end screw thread is connected with the end.
The beneficial effect of the utility model is: utilize the expansion principle of expansion tube that wedge deflection tool is anchored on the position of windowing; Solve wedge deflection tool and hung unstable problem; Avoid can not find in the build-up process underground work accident of window; The required bulbs of pressure of expansion process are less simultaneously, and safety factor is high, are easy to construction.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the cross sectional view at Fig. 1 A-A place.
The specific embodiment
Can know by Fig. 1, Fig. 2; The utility model by become snapping head, tubing nipple 2, screen casing 3, send into clinohedral 4, connecting pipe 6, lead italic 7, expansion tube 8, expansion-head 9, guide wire 11 and the end stifled 12 form, on become snapping head 1a bottom and be stepped internal thread, be threaded with oil pipe short circuit 2 and screen casing 3 respectively; Screen casing 3 places in the centre bore of oil pipe short circuit 2; On the screen casing 3 middle part tube walls is filter screen, open upper end, lower end closed; Under become snapping head 1b upper end and be threaded with oil pipe short circuit 2, its lower end is threaded with connecting pipe 6 through internal thread, its lower end external screw thread with send into clinohedral 4 and be connected; Send into clinohedral 4 and lead italic 7 and 5 be connected through pin; Lead italic 7 middle parts and have centre bore 7a and following centre bore 7c; Pod apertures 7b is communicated with last centre bore 7a; Weep hole 7d is communicated with following centre bore 7c, leads italic 7 lower external thread and is threaded with expansion tube 8, and the interior screw thread of following centre bore 7c of leading italic 7 is threaded with guide wire 11; Sulfuration seal 10 is installed on the outer tube wall of expansion tube 8, and inner tubal wall is provided with shoulder in the taper, and expansion-head 9 is connected on the interior shoulder of the expansion tube 8 in the annular space between expansion tube 8 and the guide wire 11, and expansion tube 8 lower end screw threads are connected with the end stifled 12.
Described expansion tube 8 tops are the horn mouth shape.
The described change between snapping head 1b and connecting pipe 6 outer tube walls down is equipped with O-ring seal 13a.
Described leading between italic 7 inner tubal walls and connecting pipe 6 outer tube walls is equipped with O-ring seal 13b.
Described leading between italic 7 outer tube walls and expansion tube 8 inner tubal walls is equipped with O-ring seal 13c.
During use, the utility model is connected with drilling rod and down to predetermined sidetracking position, and according to windowing good its azimuth of set positions; In tubing string, buy workover fluid through the water pump car then; After pump pressure improved, workover fluid got in the connecting pipe 6 through screen casing 3, and got in the expansion tube 8 along the centre bore 7a that leads italic 7, pod apertures 7b; Make the descending and distending expansion tube 8 of expansion-head 9 beginnings; Sulfuration seal 10 on the expansion tube 8 firmly is anchored on the casing wall, simultaneously the liquid that is extruded of expansion-head 9 lower ends along the centre bore of guide wire 11, lead italic 7 lower ends centre bore 7c up, and flow out from the weep hole 7d that leads italic 7 and to get into the top pit shaft.Fall into after expansion-head 9 is descending in the cavity at the end stifled 12; After making the internal and external pressure balance of the utility model; On carry the drilling rod tubing string and cut off and send into inclined-plane 4 and lead the pin 5 between the italic 7; Trip out the upper lifting pipe post, then, the tubing string that is lowered to that having windows and mills awl can carry out the window sidetracking construction along the guiding incline of leading on the italic 7.
Claims (5)
1. expansion positioning wedge deflection tool; By become snapping head, tubing nipple (2), screen casing (3), send into clinohedral (4), connecting pipe (6), lead italic (7), expansion tube (8), expansion-head (9), guide wire (11) block up (12) end of with and form; It is characterized in that: on become snapping head (1a) bottom and be stepped internal thread; Be threaded with oil pipe short circuit (2) and screen casing (3) respectively, screen casing (3) places in the centre bore of oil pipe short circuit (2), is filter screen on the tube wall of screen casing (3) middle part; Open upper end, lower end closed; Under become snapping head (1b) upper end and be threaded with oil pipe short circuit (2), its lower end is threaded with connecting pipe (6) through internal thread, its lower end external screw thread with send into clinohedral (4) and be connected; Send into clinohedral (4) with lead italic (7) through the pin (5) be connected; Lead italic (7) middle part and have centre bore (7a) and following centre bore (7c); Pod apertures (7b) is communicated with last centre bore (7a); Weep hole (7d) is communicated with following centre bore (7c), leads italic (7) lower external thread and is threaded with expansion tube (8), and the interior screw thread of following centre bore (7c) of leading italic (7) is threaded with guide wire (11); Sulfuration seal (10) is installed on the outer tube wall of expansion tube (8); Inner tubal wall is provided with shoulder in the taper; Expansion-head (9) is connected on the interior shoulder of the expansion tube (8) in the annular space between expansion tube (8) and the guide wire (11), and expansion tube (8) lower end screw thread is connected with the end stifled (12).
2. expansion positioning wedge deflection tool according to claim 1 is characterized in that: expansion tube (8) top is the horn mouth shape.
3. expansion positioning wedge deflection tool according to claim 1 and 2 is characterized in that: between change snapping head (1b) and connecting pipe (6) outer tube wall O-ring seal (13a) is installed down.
4. expansion positioning wedge deflection tool according to claim 1 and 2 is characterized in that: lead between italic (7) inner tubal wall and connecting pipe (6) outer tube wall O-ring seal (13b) is installed.
5. expansion positioning wedge deflection tool according to claim 1 and 2 is characterized in that: lead between italic (7) outer tube wall and expansion tube (8) inner tubal wall O-ring seal (13c) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220033137 CN202451056U (en) | 2012-02-02 | 2012-02-02 | Expansion tube positioning whipstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220033137 CN202451056U (en) | 2012-02-02 | 2012-02-02 | Expansion tube positioning whipstock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451056U true CN202451056U (en) | 2012-09-26 |
Family
ID=46866926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220033137 Expired - Lifetime CN202451056U (en) | 2012-02-02 | 2012-02-02 | Expansion tube positioning whipstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451056U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105829638A (en) * | 2014-01-15 | 2016-08-03 | 哈利伯顿能源服务公司 | Well diverter assembly with substantially pressure balanced annular seal device |
| CN107100546A (en) * | 2017-07-06 | 2017-08-29 | 贵州省地质矿产勘查开发局111地质大队 | Slope guiding device directly connected with sleeve |
| CN109538121A (en) * | 2019-01-30 | 2019-03-29 | 河南省煤田地质局四队 | Portable type whipstock |
| CN114790873A (en) * | 2021-01-26 | 2022-07-26 | 中国石油化工股份有限公司 | Multi-branch well bore ultra-short radius windowing sidetrack drilling orientation tool and use method |
-
2012
- 2012-02-02 CN CN 201220033137 patent/CN202451056U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105829638A (en) * | 2014-01-15 | 2016-08-03 | 哈利伯顿能源服务公司 | Well diverter assembly with substantially pressure balanced annular seal device |
| CN105829638B (en) * | 2014-01-15 | 2018-02-23 | 哈利伯顿能源服务公司 | Well diverter assembly with substantially pressure balanced annular seal |
| US10145177B2 (en) | 2014-01-15 | 2018-12-04 | Halliburton Energy Services, Inc. | Well diverter assembly with substantially pressure balanced annular seal device |
| CN107100546A (en) * | 2017-07-06 | 2017-08-29 | 贵州省地质矿产勘查开发局111地质大队 | Slope guiding device directly connected with sleeve |
| CN109538121A (en) * | 2019-01-30 | 2019-03-29 | 河南省煤田地质局四队 | Portable type whipstock |
| CN109538121B (en) * | 2019-01-30 | 2024-05-03 | 河南省资源环境调查四院有限公司 | Portable whipstock |
| CN114790873A (en) * | 2021-01-26 | 2022-07-26 | 中国石油化工股份有限公司 | Multi-branch well bore ultra-short radius windowing sidetrack drilling orientation tool and use 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: 20120926 |