CN204663503U - Coal bed gas spinning hydraulic jet cave making tool - Google Patents
Coal bed gas spinning hydraulic jet cave making tool Download PDFInfo
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- CN204663503U CN204663503U CN201520366902.7U CN201520366902U CN204663503U CN 204663503 U CN204663503 U CN 204663503U CN 201520366902 U CN201520366902 U CN 201520366902U CN 204663503 U CN204663503 U CN 204663503U
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- pipe nipple
- jet pipe
- rotation
- nozzle
- rotating jet
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Abstract
The utility model provides a kind of coal bed gas spinning hydraulic jet cave making tool, comprising: body, end cap, copper sheathing, axis of rotation and rotating jet pipe nipple.The upper end of described axis of rotation is sleeved in body, and lower end, through end cap and copper sheathing, is connected with described rotating jet pipe nipple.Described rotating jet pipe nipple bottom is provided with a pair eccentric hydrophthalmia be connected with interior bone, nozzle is all equipped with in inside, produce rotation torque when fluid is flowed through eccentric hydrophthalmia by through hole, thus promote the rotation of rotating jet pipe nipple, fluid sprays from described nozzle with pattern simultaneously.The rotation of described rotating jet pipe nipple without the need to by rotary tools, thus effectively prevent because of drilling tool long-time rotary operation and the screen damage caused, fracture and complicated construction accident of causing in screen casing thereupon.
Description
Technical field:
The utility model relates to oil-drilling field, particularly relates to a kind ofly being applicable to the coal bed gas spinning hydraulic jet cave making tool that coal bed gas horizontal well reaming hole makes cave.
Background technology:
China has abundant coal bed gas resource, but great majority belong to low-porosity and low-permeability reservoir, utilizes conventional horizontal well technology to carry out ground mining, the problems such as ubiquity gas output per well is low, development effectiveness is poor.At present, the main path of external raising coal bed gas horizontal well output adopts hydraulic fracturing technology, the domestic method of fracturing that also adopted is to improve the permeability in coal seam, but general effect is unsatisfactory, therefore transfer to adopt under after completion and enter the method for screen casing to improve coal bed gas horizontal well completion success rate, increase methane output.In screen casing, make cave to coal seam horizontal segment can obtain and expand horizontal segment discharge channel, effectively increase discharge space, increase coal-bed methane seepage area.But general hydraulic jet cave making tool needs by rotary tools, and drilling tool long-time rotary operation in screen casing easily causes screen casing abrasion deformation, even ruptures, causes complex accident.Therefore be necessary to provide a kind of novel hydropower jet cave making tool, to avoid to the damage that screen casing causes in operation process, fracture.
Summary of the invention:
The purpose of this utility model is to provide a kind of coal bed gas spinning hydraulic jet cave making tool, without the need to by rotary tools during this tool operation, effectively prevent because of drilling tool long-time rotary operation and the screen damage caused, fracture in screen casing.
The technical solution of the utility model is as follows:
Described coal bed gas spinning hydraulic jet cave making tool comprises: body, end cap, copper sheathing, axis of rotation and rotating jet pipe nipple.Described end cap is connected to body lower end, is followed successively by copper sheathing and rotating jet pipe nipple below end cap; The upper end of described axis of rotation is sleeved in body, and lower end, through end cap and copper sheathing, is connected with described rotating jet pipe nipple; The center of inside of described axis of rotation and rotating jet pipe nipple is through by through hole, and fluid can enter described through hole by the entrance of body upper end; The axis of rotation outer peripheral face of described body interior is provided with thrust ball bearing, deep groove ball bearing A and deep groove ball bearing B from top to bottom successively, separated by baffle ring between described thrust ball bearing and deep groove ball bearing A, the frictional resistance that the effect of 3 bearings is to reduce when axis of rotation rotates and body interior produces.Axis of rotation outer peripheral face above described thrust ball bearing is also provided with twice O RunddichtringO and back-up ring.Described rotating jet pipe nipple bottom is provided with the eccentric hydrophthalmia be connected with described through hole for a pair, inside is equipped with nozzle A and nozzle B respectively, rotation torque is produced when fluid is flowed through eccentric hydrophthalmia by described through hole, thus promoting the rotation of rotating jet pipe nipple, fluid sprays from described nozzle A and nozzle B with pattern simultaneously.In addition, the top of described nozzle A and nozzle B is equipped with jump ring, so that the dismounting of two nozzles and fixing.
There is better overall tightness in order to make described coal bed gas spinning hydraulic jet cave making tool when operation, the axis of rotation outer peripheral face being positioned at described end cap and rotating jet pipe nipple inside is equipped with O RunddichtringO, described nozzle A and nozzle B outer peripheral face are also provided with O RunddichtringO.
In addition, the through hole be positioned at bottom described rotating jet pipe nipple can set up nozzle C, is beneficial to rinse that pit shaft ickings and circulating fluid are auxiliary takes rock.Identical with nozzle A or nozzle B, the outer peripheral face of described nozzle C is also provided with O RunddichtringO, and top is provided with jump ring.In addition, two described eccentric hydrophthalmias also can with respect to the horizontal plane upwards shape have a certain degree, be beneficial to take rock.
In addition, in order to ensure the connection close and firm between parts, and be easy to dismounting simultaneously, described body and end cap, between axis of rotation and rotating jet pipe nipple, all adopt thread connecting mode, particularly, described end cap top is stretched into body lower end and is connected by screw thread, and junction is fixed by retaining pin A; Described axis of rotation is inserted the upper end of rotating jet pipe nipple and is connected by screw thread, and junction is fixed by retaining pin B.
The utility model is by arranging a pair eccentric hydrophthalmia in described rotating jet pipe nipple bottom, due on the cross section of described rotating jet pipe nipple, the axis projection of two described eccentric hydrophthalmias is parallel to each other and keeps certain eccentric throw relative to the axle center of rotating jet pipe nipple, make to produce rotation torque when fluid is flowed through eccentric hydrophthalmia by described through hole, thus promoting the rotation of rotating jet pipe nipple, fluid sprays from the nozzle described eccentric hydrophthalmia with pattern simultaneously.The utility model is in operation process, and the rotation of described rotating jet pipe nipple without the need to by rotary tools, thus effectively prevent because of drilling tool long-time rotary operation and the screen damage caused, fracture and complicated construction accident of causing in screen casing thereupon.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the utility model coal bed gas spinning hydraulic jet cave making tool;
Fig. 2 is the positional structure schematic diagram of described eccentric hydrophthalmia on described rotating jet pipe nipple cross section.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is specifically described.Coal bed gas spinning hydraulic jet cave making tool described in the utility model comprises: body 1, end cap 2, copper sheathing 3, axis of rotation 4 and rotating jet pipe nipple 5.Described end cap 2 is connected to body 1 lower end, is followed successively by copper sheathing 3 and rotating jet pipe nipple 5 below end cap 2; The upper end of described axis of rotation 4 is sleeved in body 1, and lower end, through end cap 2 and copper sheathing 3, is connected with described rotating jet pipe nipple 5; The center of inside of described axis of rotation 4 and rotating jet pipe nipple 5 is through by through hole 6, and fluid can enter described through hole 6 by the entrance of body 1 upper end; Axis of rotation 4 outer peripheral face of described body 1 inside is provided with thrust ball bearing 7, deep groove ball bearing A8 and deep groove ball bearing B9 from top to bottom successively, separated by baffle ring 10 between described thrust ball bearing 7 and deep groove ball bearing A8, the effect of 3 bearings is to reduce the frictional resistance that when axis of rotation 4 rotates and body 1 inside produces.Axis of rotation 4 outer peripheral face above described thrust ball bearing 7 is also provided with twice O RunddichtringO 11 and back-up ring 12.The bottom of described rotating jet pipe nipple 5 is provided with the eccentric hydrophthalmia be connected with described through hole 6 for a pair, and inside is equipped with nozzle A13 and nozzle B 14 respectively; Concrete structure as shown in Figure 2, on the cross section of described rotating jet pipe nipple 5, the axis projection of two described eccentric hydrophthalmias is parallel to each other and keeps certain eccentric throw relative to the axle center of rotating jet pipe nipple 5, make to produce rotation torque when drilling fluid is flowed through eccentric hydrophthalmia by described through hole 6, thus promotion rotating jet pipe nipple 5 rotates, fluid sprays from described nozzle A13 and nozzle B 14 with pattern simultaneously.In addition, the top of described nozzle A13 and nozzle B 14 is equipped with jump ring 16, so that the dismounting of two nozzles and fixing; Be positioned at through hole 6 bottom described rotating jet pipe nipple 5 built with nozzle C15, be beneficial to rinse pit shaft ickings and circulating fluid is auxiliary takes rock.The top of described nozzle C15 is provided with jump ring 16 equally, so that the dismounting of nozzle and fixing.
Two described eccentric hydrophthalmias with respect to the horizontal plane upwards become 10 ° of angles, are beneficial to take rock.
Axis of rotation 4 outer peripheral face being positioned at described end cap 2 and rotating jet pipe nipple 5 inside is equipped with O RunddichtringO 11, described nozzle A13, nozzle B 14 and nozzle C15 outer peripheral face are also provided with O RunddichtringO 11, to ensure that instrument has good overall tightness when operation.
Described end cap 2 top is stretched into body 1 lower end and is connected by screw thread, and junction is fixed by retaining pin A17; Described axis of rotation 4 is inserted the upper end of rotating jet pipe nipple 5 and is connected by screw thread, and junction is fixed by retaining pin B18.Adopt to be threaded and retaining pin fixed form ensure that the close and firm connected between parts.
Above-mentioned detailed description of the invention is only for illustration of the utility model; wherein the structure of each parts and connection to arrange etc. and can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (5)
1. a coal bed gas spinning hydraulic jet cave making tool, is characterized in that comprising: body (1), end cap (2), copper sheathing (3), axis of rotation (4) and rotating jet pipe nipple (5); Described end cap (2) is connected to body (1) lower end, and end cap (2) below is followed successively by copper sheathing (3) and rotating jet pipe nipple (5); The upper end of described axis of rotation (4) is sleeved in body (1), and lower end, through end cap (2) and copper sheathing (3), is connected with described rotating jet pipe nipple (5); The center of inside of described axis of rotation (4) and rotating jet pipe nipple (5) is through by through hole (6); Axis of rotation (4) outer peripheral face that described body (1) is inner is provided with thrust ball bearing (7), deep groove ball bearing A (8) and deep groove ball bearing B (9) from top to bottom successively, is separated by baffle ring (10) between described thrust ball bearing (7) and deep groove ball bearing A (8); Axis of rotation (4) outer peripheral face of thrust ball bearing (7) top is also provided with twice O RunddichtringO (11) and back-up ring (12); The bottom of described rotating jet pipe nipple (5) is provided with the eccentric hydrophthalmia be connected with through hole (6) for a pair, and inside is equipped with nozzle A (13) and nozzle B (14) respectively; The top of nozzle A (13) and nozzle B (14) is equipped with jump ring (16).
2. coal bed gas spinning hydraulic jet cave making tool according to claim 1, is characterized in that: be positioned on inner axis of rotation (4) outer peripheral face of described end cap (2) and rotating jet pipe nipple (5) and be equipped with O RunddichtringO (11); The outer peripheral face of described nozzle A (13) and nozzle B (14) is equipped with O RunddichtringO (11).
3. coal bed gas spinning hydraulic jet cave making tool according to claim 1 and 2, is characterized in that: be positioned at the through hole (6) of described rotating jet pipe nipple (5) bottom built with nozzle C (15); The outer peripheral face of described nozzle C (15) is provided with O RunddichtringO (11), and top is provided with jump ring (16).
4. coal bed gas spinning hydraulic jet cave making tool according to claim 3, is characterized in that: two described eccentric hydrophthalmias with respect to the horizontal plane upwards shape have a certain degree.
5. coal bed gas spinning hydraulic jet cave making tool according to claim 3, it is characterized in that: described end cap (2) top is stretched into body (1) lower end and is connected by screw thread, junction is fixed by retaining pin A (17); Described axis of rotation (4) is inserted the upper end of rotating jet pipe nipple (5) and is connected by screw thread, and junction is fixed by retaining pin B (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520366902.7U CN204663503U (en) | 2015-06-01 | 2015-06-01 | Coal bed gas spinning hydraulic jet cave making tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520366902.7U CN204663503U (en) | 2015-06-01 | 2015-06-01 | Coal bed gas spinning hydraulic jet cave making tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204663503U true CN204663503U (en) | 2015-09-23 |
Family
ID=54133895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520366902.7U Expired - Fee Related CN204663503U (en) | 2015-06-01 | 2015-06-01 | Coal bed gas spinning hydraulic jet cave making tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204663503U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703725A (en) * | 2015-11-17 | 2017-05-24 | 贵州高峰石油机械股份有限公司 | Rotary sandblasting head |
| CN107605403A (en) * | 2017-11-01 | 2018-01-19 | 中煤科工集团西安研究院有限公司 | Spinning high-pressure water jet adjusting drilling aperture apparatus |
-
2015
- 2015-06-01 CN CN201520366902.7U patent/CN204663503U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703725A (en) * | 2015-11-17 | 2017-05-24 | 贵州高峰石油机械股份有限公司 | Rotary sandblasting head |
| CN107605403A (en) * | 2017-11-01 | 2018-01-19 | 中煤科工集团西安研究院有限公司 | Spinning high-pressure water jet adjusting drilling aperture apparatus |
| CN107605403B (en) * | 2017-11-01 | 2019-06-18 | 中煤科工集团西安研究院有限公司 | Spinning high-pressure water jet adjusting drilling aperture apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210715 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |