CN2157978Y - Adjustable angle shell unit specially for screw arbor drilling tool - Google Patents
Adjustable angle shell unit specially for screw arbor drilling tool Download PDFInfo
- Publication number
- CN2157978Y CN2157978Y CN 93211063 CN93211063U CN2157978Y CN 2157978 Y CN2157978 Y CN 2157978Y CN 93211063 CN93211063 CN 93211063 CN 93211063 U CN93211063 U CN 93211063U CN 2157978 Y CN2157978 Y CN 2157978Y
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- CN
- China
- Prior art keywords
- drilling tool
- adjustable angle
- center line
- pin thread
- pipe nipple
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an adjustable angle bend shell body unit specially used for a screw drilling tool. The adjustable angle bend shell body unit specially used for a screw drilling tool is the improvement to the existing screw drilling tool. The adjustable angle bend shell body unit specially used for a screw drilling tool is used in petroleum geology and exploration development work. An adjustable angle bend shell body unit is newly added to a screw drilling tool. The adjustable angle bend shell body unit specially used for a screw drilling tool is composed of an upper short joint, a double-common buckling short joint, an outer support sleeve, a flat key, and a lower short joint. The adjustable angle bend shell body unit specially used for a screw drilling tool can optionally and conveniently adjust the structural form of the drilling tool. A straight drilling tool is changed into a bend drilling tool with a definite angle, or whereas, thereby, a new drilling tool combination is formed to adapt to the variable technological requirement of a drilling well. The adjustable angle bend shell body unit specially used for a screw drilling tool has simple device structure and convenient adjustment.
Description
The utility model belongs to mud motor technology category, is exclusively used in the curved housing unit of adjustable angle of helicoid hydraulic motor.
In the petroleum exploration and development work, mud motor has been widely used in directional well, cluster well, horizontal well drilling and the workover treatment, this just requires mud motor structurally to satisfy the needs of drilling technology, can adjust the drilling tool structure feature arbitrarily easily, form new drilling assembly with new drilling tool structure form, adapt to the drilling technology needs of variation.The external at present helicoid hydraulic motor of introducing mainly is made up of by-pass valve assembly, fluid motor assembly, universal drive shaft assembly and driving-shaft assembly four parts.By-pass valve assembly is connected with the fluid motor stator with screw thread, and stator is many lobes threaded hole of a metal shell liner nitrile rubber, and rotor is solid many lobes metal spiral bar.External universal drive shaft and power transmission shaft below rotor.Stator then links to each other with the universal drive shaft housing, and the universal drive shaft housing links to each other with transmission shaft shell again.Between transmission shaft shell and power transmission shaft, include journal bearing and thrust bearing.The drilling tool of this structure, there is the universal drive shaft of rotation its inside of universal drive shaft housing, and in this plain edition drilling tool structure, the universal drive shaft housing is straight shell body, can not change the architectural feature of drilling tool according to the needs of drilling technology arbitrarily.
The purpose of this utility model is to overcome the deficiencies in the prior art, and medium-sized universal drive shaft housing is designed to novel drilling tool, and adjustable angle is bent shell structure.Thereby its angle adjustment scope is 0 °～2.5 ° architectural features that change drilling tool.
The utility model is achieved in that increases the curved housing unit of adjustable angle on helicoid hydraulic motor, pipe nipple constituted under the curved housing unit of adjustable angle was mainly reached by last pipe nipple, two pin thread pipe nipple, outer support set, flat key, and last pipe nipple is connected two pin thread pipe nipples top; Outer support set is fixed on two pin thread pipe nipples by flat key, and outer support set can only slide on two pin thread pipe nipples and can not rotate, and following pipe nipple is connected two pin thread pipe nipples below.
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is a helicoid hydraulic motor overall structure schematic diagram;
Fig. 2 is the curved housing unit structural representation of adjustable angle.
In Fig. 2: pipe nipple under support set, 4--flat key, the 5--outside the last pipe nipple of 1--, the two pin thread pipe nipples of 2--, the 3--.
The utility model is the curved housing unit of helicoid hydraulic motor special adjustable angle, is made up of 5 parts.Pipe nipple 1 is attached at two pin thread pipe nipple 2 tops on the (see figure 2), and outer support set 3 is fixed on two pin thread pipe nipples 2 by flat key 4, and outer support set 3 can only slide on two pin thread pipe nipples 2 and can not rotate, and following pipe nipple 5 is attached at two pin thread pipe nipple 2 belows.The last screw thread center line of two pin thread pipe nipples 2 is consistent with himself center line, and following screw thread center line and himself center line are an angle (1.25 °).Outer support set 3 upper surfaces are perpendicular with self center line, and the lower surface is an angle (1.25 °) with self center line.The upper surface of following pipe nipple 5 is perpendicular with the screw thread center line, and the screw thread center line is an angle (1.25 °) with himself center line.When self center line of pipe nipple 5 is with self central lines of two pin thread pipe nipples 2 instantly, the last pipe nipple 1 in this unit then, outer support set 3, time pipe nipple 5 no any angle of bend are so drilling tool is straight type state.Need do following adjustment when drilling tool is changed into the bending state by straight type state as required.The following screw thread of pipe nipple 5 is unscrewed with the following screw thread of two pin thread pipe nipples 2 and retreated half-turn, then descend the upper surface of pipe nipple 5 and the lower surface of outer support set 3 that a spacing (half screw thread pitch) is arranged.Move down outer support set 3 half pitch distances, and the screw thread of last pipe nipple 1 and the last screw thread of two pin thread pipe nipples 2 are tightened.Through after the above-mentioned adjustment, self center line that then descends pipe nipple 5 is an angle (2.5 °) with self center line of two pin thread pipe nipples 2, at this moment in following pipe nipple 5 upper end surfaces curved point has taken place, the curved housing unit of adjustable angle this moment has played effect, and drilling tool has become the bending state by straight type state.Thereby changed the helicoid hydraulic motor architectural feature, become the bending drilling tool, adapted to the needs of the drilling technology that changes with the drilling tool structure of this new feature by straight type drilling tool.Otherwise, according to the drilling technology needs, when changing into straight shape attitude by the bending state, drilling tool need do following adjustment: the screw thread of last pipe nipple 1 and the last screw thread of two pin thread pipe nipples 2 are unscrewed and retreated half-turn, then go up the lower surface of pipe nipple 1 and the upper surface of outer support set 3 distance (half thread pitch) is arranged, on move outer support set 3 half pitch distances, and the screw thread of pipe nipple 5 and the following screw thread of two pin thread pipe nipples 2 are tightened down, through after the above-mentioned adjustment, self center line of following pipe nipple 5 becomes linear state with self center line of curved pin thread pipe nipple 2 by being an angle state, the curved point that occurs in down pipe nipple 5 upper end surfaces has disappeared, then the curved housing unit of adjustable angle has played effect, has become straight shape attitude by the bending state.Bending drilling tool has originally become straight shape drilling tool, has changed original drilling tool structure feature again.
The utility model adopts as above method of adjustment, can adjust curved housing angle easily arbitrarily in 0 °～2.5 ° scopes according to the needs of drilling technology, to change the architectural feature of drilling tool.The utility model is not only simple in structure, and easy to adjust, accurate.
Claims (3)
1, a kind of helicoid hydraulic motor special adjustable angle is bent housing unit, belong to the mud motor technology, helicoid hydraulic motor is mainly by by-pass valve assembly, the fluid motor assembly, universal drive shaft assembly and driving-shaft assembly four parts are formed, it is characterized in that increasing on the helicoid hydraulic motor the curved housing unit of adjustable angle, the curved housing unit of adjustable angle is mainly by last pipe nipple (1), two pin thread pipe nipples (2), outer support set (3), flat key (4) reaches down, and pipe nipple (5) constitutes, last pipe nipple (1) is connected two pin thread pipe nipples (2) top, outer support set (3) is fixed on two pin thread pipe nipples (2) by flat key (4), outer support set (3) can only and can not rotate in the last slip of two pin thread pipe nipples (2), and following pipe nipple (5) is connected two pin thread pipe nipples (2) below.
2, the curved housing unit of helicoid hydraulic motor special adjustable angle according to claim 1, the last screw thread center line that it is characterized in that two pin thread pipe nipples (2) is consistent with himself center line, and following screw thread center line and himself center line are 1.25 ° of angles; The upper surface of outer support set (3) is perpendicular with self center line, and the lower surface is an angle (1.25 °) with self center line; The upper surface of following pipe nipple (5) is perpendicular with the screw thread center line, and the screw thread center line is 1.25 ° of angles with himself center line.
3, the curved housing unit of adjustable angle according to claim 1 and 2, it is characterized in that pipe nipple (1) and following pipe nipple (5) are connected with two pin thread pipe nipples (2) respectively, and clamping one usefulness flat key (4) is fixing between both ends of the surface, but can go up the outer support set (3) that slides at two pin thread pipe nipples (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93211063 CN2157978Y (en) | 1993-04-29 | 1993-04-29 | Adjustable angle shell unit specially for screw arbor drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93211063 CN2157978Y (en) | 1993-04-29 | 1993-04-29 | Adjustable angle shell unit specially for screw arbor drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2157978Y true CN2157978Y (en) | 1994-03-02 |
Family
ID=33792791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93211063 Expired - Fee Related CN2157978Y (en) | 1993-04-29 | 1993-04-29 | Adjustable angle shell unit specially for screw arbor drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2157978Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861833A (en) * | 2014-03-04 | 2014-06-18 | 中国石油化工股份有限公司 | PDM (Positive Displacement Motor) drill cleaning system |
| CN107762409A (en) * | 2017-09-05 | 2018-03-06 | 四川宏华石油设备有限公司 | A kind of drilling tool and method oriented with horizontal well |
-
1993
- 1993-04-29 CN CN 93211063 patent/CN2157978Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861833A (en) * | 2014-03-04 | 2014-06-18 | 中国石油化工股份有限公司 | PDM (Positive Displacement Motor) drill cleaning system |
| CN107762409A (en) * | 2017-09-05 | 2018-03-06 | 四川宏华石油设备有限公司 | A kind of drilling tool and method oriented with horizontal well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |