CN101656438B - Screw drilling tool motor stator - Google Patents
Screw drilling tool motor stator Download PDFInfo
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- CN101656438B CN101656438B CN 200910063988 CN200910063988A CN101656438B CN 101656438 B CN101656438 B CN 101656438B CN 200910063988 CN200910063988 CN 200910063988 CN 200910063988 A CN200910063988 A CN 200910063988A CN 101656438 B CN101656438 B CN 101656438B
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- rubber bushing
- petal
- motor stator
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Abstract
The invention relates to a motor stator which is used for the petroleum and natural gas well-drilling field and is matched with the screw drilling tool. The motor stator comprises a casing and a rubber bushing. The rubber bushing is bonded with the inner opening of the casing. The inner opening of the rubber bushing is of a continuous spiral type. The radial cross section is of a circumferential uniformly-distributed petal shape. The difference is that the wall thickness of the rubber bushing at the radial cross section is not even. The wall thickness of each petal of the rubber bushing at the radial cross section from the lowest part of the dent to the highest part of the projection gradually increases. The largest thickness is 1.2-2 times of the smallest thickness. The shape of each petal on the radial cross section is same,The motor stator of the invention not only can prevent the damage of the stator rubber caused by the easy blocking of the rotor in the stator and no easy discharge of the slurry pressure when an overgreat drilling pressure generates on the stator with same wall thickness, but also prevents the problem of over-early failure caused by the large wall thickness difference of the rubber bushing and easy heat accumulation to the part with thick rubber. Therefore the advantages of greatly increasing the efficiency of the motor stator and effectively prolonging the service lifetime are obtained.
Description
Technical field
The present invention relates to a kind of motor stator for oil, gas drilling field and helicoid hydraulic motor configuration.
Background technology
Screw drilling tool motor is the most widely used a kind of mud motor at present, is mainly used in the deflecting of directional well, horizontal well and turns round the orientation construction, and a part also is used for straight well left-hand thread or sidetracking operation.U.S.'s the mid-50 begins to develop helicoid hydraulic motor, receives drilling tool (Smith company), Navi-Drill (Christensen company) and Persian drilling tool for the production of the enlightening that has of, different manufacturers production in 1962, and its basic principle all is based on positive displacement motor.The motor stator of traditional helicoid hydraulic motor, as shown in Figure 1, be that the vulcanization of rubber is formed rubber bushing (2) in steel pipe housing (1), the endoporus of steel pipe housing is circular, the inner surface of rubber bushing is spiral camber, thereby the radial section thickness of rubber bushing ten minutes is inhomogeneous, the stator of this helicoid hydraulic motor is when the rotor rotary work, the heat that spin friction produces accumulates in the thick part of rubber easily, make the bigger than other positions of herein rubber swelling amount, like this rotor portion when work within it, cause the stator premature failure easily, thereby reduce operating efficiency and the useful life of screw drilling tool motor.Chinese patent 200820108496.4 discloses a kind of pre-profile formula screw drilling tool motor stator, its radial section structure as shown in Figure 2, on the normal orientation of the inner chamber curve of stator, the thickness of rubber bushing equates that namely rubber bushing is for waiting wall thickness structure.Can avoid the generation of rubber bushing slub heating failure conditions like this, but from being used for, when drilling pressure is excessive, deflection Deng the wall thickness rubber bushing is smaller, rotor blocks in stator easily, mud pressure is difficult for the destruction that discharge also can cause stator rubber, influences operating efficiency and the useful life of screw drilling tool motor.
Summary of the invention
Technical problem to be solved by this invention is the deficiency at above-mentioned prior art existence, and the screw drilling tool motor stator of a kind of high efficiency and long service life is provided.
The present invention is that the technical scheme that the problem of the above-mentioned proposition of solution adopts is: comprise housing and rubber bushing, rubber bushing and housing endoporus are bonding, the rubber bushing endoporus is the continuous helical line style, radial section is circumferentially uniform petal-shaped, its difference be rubber bushing at the wall thickness of radial section for not waiting wall thickness, rubber bushing each petal on radial section is to its wall thickness of evagination highest point from the indent lowest part and increases progressively shape, and maximum ga(u)ge is 1.2～2 times of minimum thickness, and the shape of each petal is identical on the radial section.
Press such scheme, described rubber bushing each petal on radial section is the linear increment shape from indent lowest part to its wall thickness of evagination highest point, perhaps is the non-linear increasing shape.
Press such scheme, hole shape is identical with the shape of rubber bushing periphery in the described housing.
Press such scheme, described petal is 2～10.
Press such scheme, described rubber bushing each petal outer peripheral face on radial section is short secondary cycloid from the indent lowest part to the formed curve of evagination highest point, also can be other similarly smooth easement curves.
Beneficial effect of the present invention is: owing to vulcanized the abrasive rubber that one deck does not wait wall thickness in inner walls, form the rubber bushing that does not wait wall thickness, the evagination place wall thickness that the weakness of rubber bushing radius is petal is thicker, can produce suitable strain, so both can avoid same wall-thickness stator when drilling pressure is excessive, rotor blocks in stator easily, mud pressure is not easy to discharge and the destruction of causing stator rubber, also avoided because the wall thickness variation of rubber bushing is big, heat accumulates in the thick part of rubber easily, make rubber swelling amount herein bigger than other positions, be easy to cause the problem of stator premature failure.Thereby it is less to reach rubber bushing swell increment difference when work is heated, and the motor stator efficiency improves greatly, and not easy to wear, and effectively prolonged useful life.
Description of drawings
Fig. 1 is the longitudinal section view of traditional screw drilling tool motor stator.
Fig. 2 is the longitudinal section view of existing pre-profile helicoid hydraulic motor stator.
The longitudinal section view of Fig. 3 one embodiment of the invention.
Fig. 4 is the A-A cutaway view of Fig. 3.
Embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing, comprise housing 1 and rubber bushing 2, rubber bushing is bonding through sulfidization molding and housing endoporus by abrasive rubber, rubber bushing endoporus 3 is the continuous helical line style, radial section is circumferentially uniform petal-shaped, described petal is 6, rubber bushing on radial section each petal (radius minimum place) its wall thickness is and increases progressively shape from indent lowest part (maximum radius) to the evagination highest point, be that wall thickness is thickeied gradually, and maximum ga(u)ge is 1.6 times of minimum thickness, rubber bushing each petal outer peripheral face 4 on radial section is short secondary cycloid from the indent lowest part to the formed curve of evagination highest point, the shape of each petal is identical on the radial section; Hole shape is identical with the shape of rubber bushing periphery in the housing.
Claims (4)
1. screw drilling tool motor stator, comprise housing and rubber bushing, rubber bushing and housing endoporus are bonding, the rubber bushing endoporus is the continuous helical line style, the radial section of rubber bushing is circumferentially uniform petal-shaped, and has the petal periphery, it is characterized in that rubber bushing at the wall thickness of radial section for not waiting wall thickness, rubber bushing each petal on radial section is to its wall thickness of evagination highest point from the indent lowest part and increases progressively shape, and maximum ga(u)ge is 1.2～1.6 times of minimum thickness, and the shape of each petal is identical on the radial section; Described rubber bushing each petal on radial section is the linear increment shape from indent lowest part to its wall thickness of evagination highest point, perhaps is the non-linear increasing shape.
2. screw drilling tool motor stator according to claim 1 is characterized in that hole shape is identical with the shape of rubber bushing periphery in the described housing.
3. screw drilling tool motor stator according to claim 1 is characterized in that described petal is 2～10.
4. screw drilling tool motor stator according to claim 1 is characterized in that described rubber bushing each petal outer peripheral face on radial section is short secondary cycloid from the indent lowest part to the formed curve of evagination highest point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910063988 CN101656438B (en) | 2009-09-15 | 2009-09-15 | Screw drilling tool motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910063988 CN101656438B (en) | 2009-09-15 | 2009-09-15 | Screw drilling tool motor stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101656438A CN101656438A (en) | 2010-02-24 |
| CN101656438B true CN101656438B (en) | 2013-10-02 |
Family
ID=41710588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910063988 Active CN101656438B (en) | 2009-09-15 | 2009-09-15 | Screw drilling tool motor stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101656438B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101850449A (en) * | 2010-04-17 | 2010-10-06 | 内蒙古北方重工业集团有限公司 | Preparation method and equipment of screw drill inside spin pre-outline stator |
| CN102629796B (en) * | 2012-03-26 | 2013-11-20 | 西南石油大学 | Pipe fitting inner high-pressure forming equal-wall thickness screw motor and processing process thereof |
| CN104695853B (en) * | 2015-03-04 | 2017-10-13 | 中国海洋石油总公司 | A kind of screw drilling tool motor and the helicoid hydraulic motor with the motor |
| US9896885B2 (en) * | 2015-12-10 | 2018-02-20 | Baker Hughes Incorporated | Hydraulic tools including removable coatings, drilling systems, and methods of making and using hydraulic tools |
| CN107819363B (en) * | 2016-09-12 | 2020-01-07 | 中国石油天然气集团公司 | Motor stator and manufacturing method thereof |
| CN109236559B (en) * | 2018-08-20 | 2021-04-30 | 中海石油(中国)有限公司上海分公司 | Screw motor and underground power drilling tool |
| US11898560B1 (en) | 2022-07-22 | 2024-02-13 | Perfobore Inc. | Working members of a rotary hydraulic or pneumatic machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030143094A1 (en) * | 2002-01-29 | 2003-07-31 | Halliburton Energy Services, Inc. | Stator for down hole drilling motor |
| CN1888372A (en) * | 2006-07-21 | 2007-01-03 | 西南石油大学 | Whole-metal stator screw drilling tool |
| CN200949421Y (en) * | 2006-03-13 | 2007-09-19 | 西南石油学院 | Uniform wall thickness stator screw drill |
| CN201219215Y (en) * | 2008-06-11 | 2009-04-08 | 大港油田集团中成机械制造有限公司 | Pre-outline type screw drill motor stator |
-
2009
- 2009-09-15 CN CN 200910063988 patent/CN101656438B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030143094A1 (en) * | 2002-01-29 | 2003-07-31 | Halliburton Energy Services, Inc. | Stator for down hole drilling motor |
| CN200949421Y (en) * | 2006-03-13 | 2007-09-19 | 西南石油学院 | Uniform wall thickness stator screw drill |
| CN1888372A (en) * | 2006-07-21 | 2007-01-03 | 西南石油大学 | Whole-metal stator screw drilling tool |
| CN201219215Y (en) * | 2008-06-11 | 2009-04-08 | 大港油田集团中成机械制造有限公司 | Pre-outline type screw drill motor stator |
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| Publication number | Publication date |
|---|---|
| CN101656438A (en) | 2010-02-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Address before: 430223 Hubei city of Wuhan province East Lake high tech Development Zone Miaoshan Kingdream company Patentee before: Jianghan Petroleum Drilling Bit Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180309 Address after: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee after: Kingdream Sinopec Petroleum Machinery Co. Ltd. Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: SINOPEC OILFIELD EQUIPMENT CORPORATION |
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| TR01 | Transfer of patent right |