CN202300198U - Underground anti-drag twisting reducer - Google Patents
Underground anti-drag twisting reducer Download PDFInfo
- Publication number
- CN202300198U CN202300198U CN2011204072956U CN201120407295U CN202300198U CN 202300198 U CN202300198 U CN 202300198U CN 2011204072956 U CN2011204072956 U CN 2011204072956U CN 201120407295 U CN201120407295 U CN 201120407295U CN 202300198 U CN202300198 U CN 202300198U
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- China
- Prior art keywords
- axle
- housing
- mandrel
- shell
- spline
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an underground anti-drag twisting reducer, belonging to the field of underground drilling tools. In a technical scheme, a mandrel is arranged inside a shell, the top of the mandrel is in plugging-in fit with the shell, a bearing and a spring are arranged between the top of the mandrel and the shell, the middle of the mandrel and the shell are combined in two sections, in one section, a mandrel spline arranged on the mandrel and a shell spline arranged on the shell are in mutual plugging-in fit, in the other section, a planetary gear set arranged on the mandrel and a gear ring arranged on the shell are mutually fit through rotation, and a sealing member which is sealed with the mandrel in a sliding manner is arranged at the lower end of the shell. The underground anti-drag twisting reducer has the advantages of simple structure, convenience in operation and installation, safety and reliability.
Description
Technical field
A kind of down-hole drag reduction that the utility model belongs to the down hole drill field of tool falls turns round device, is mainly used in fields such as oil and gas well drilling, geological prospecting, mine probing.
Background technology
In the process of oil and gas well drilling, geological prospecting, mine probing, complex structural wells such as directional well, horizontal well, high angle hole, extended reach well are used more and more widely, have higher requirement for drilling technology.In the steerable drilling process; Domestic main employing is the slide drilling system enforcement drillng operation of power by MTR, and this moment, power drilling tool drove the drill bit rotary drilling, and drill string itself does not rotate; But, cause frictional resistance to be difficult to effectively apply the pressure of the drill more greatly because the effect of deadweight lies low in the shaft bottom; Satisfying under the prerequisite of drilling design, the partial wells section can adopt the combined drilling technology, i.e. drill string and downhole mud motor rotary drilling simultaneously reduces loss of machine of torque for reducing frictional resistance, has certain positive role.External owing to have the rotary steerable drilling technology; Frictional resistance problem in the time of can overcoming steerable drilling fully; The domestic rotary steerable drilling Study on Technology of just actively developing, but since the external technical monopoly and the restriction of critical component, the present industrial applications that does not also have success; Only rely on import or rent The foreign chicken products, increased the drilling well integrated cost greatly.
Summary of the invention
The purpose of the utility model is in order to reduce the influence of frictional resistance to greatest extent; Under the condition that does not have rotary steerable drilling equipment, give full play to the function of existing mud power motor, become conventional slide drilling mode and be the rotary drilling mode; Improve the efficient of steerable drilling construction operation; Reduce drilling cost, improve the wellbore quality and the drilling safety property of complex structural wells such as directional well, horizontal well, high angle hole, extended reach well, and a kind of down-hole drag reduction that proposes falls and turns round device.
Realize that the technical scheme that above-mentioned purpose adopted is: axle is installed in enclosure interior; Axle top and housing are installed bearing and spring therebetween after pegging graft and cooperating; The axle middle part divides two sections to combine with housing; One section be provided in a side of on the axle the axle spline be located at cooperations of pegging graft each other of housing spline on the housing, two sections gear rings that are provided in a side of the planetary gearsets on the axle and are located on the housing rotate cooperation each other, are provided with the seal with the axle slipper seal in the housing lower end.
Described planetary gearsets is fixed on the axle through tooth rest and centre wheel by the big or small planetary gearsets that is symmetrically distributed more than three.
In axle upper end and housing joint portion sealing ring is set.
The function of the utility model: the down-hole drag reduction falls to be turned round device and is installed between drill string and the device for subsurface measuring, and enclosure interior is processed with housing spline, gear ring, and axle is installed in enclosure interior, is processed with axle spline, planetary gearsets on the axle.When putting the BHA tool-face orientation, on carry drill string, make housing spline and axle spline engagement, the well head TORQ falls through drill string, down-hole drag reduction to be turned round device and is passed to device for subsurface measuring and mud power motor, satisfies the tool-face orientation designing requirement; Carry out angle buildup interval when creeping into, transfer BHA, behind drill bit contact shaft bottom; Housing phase center roller still continues to move downward, and this moment, housing spline and axle spline broke away from, gear ring and planetary gearsets engagement; The well head TORQ is passed to the down-hole drag reduction through drill string and falls and turn round the device housing, and drives housing and rotate, because MTR produces reaction torque when driving the broken rock of drill bit rotation; Make MTR that the trend of counter-rotating arranged, be prone to cause the tool-face orientation deviation, therefore utilize the rotation of planetary gearsets that MTR is applied certain moment of torsion; Remain unchanged with stabilizing tool face orientation, and the rotation of planetary gearsets is driven by drill string, therefore when angle buildup interval creeps into; It is constant both to have stablized the tool-face orientation, can make drill string rotating again simultaneously, has reached the purpose that reduces frictional resistance; Carry out steady lower curved section when creeping into; Suitably reduce the pressure of the drill; Be that the down-hole drag reduction falls and turns round device housing phase center roller and move upward; This moment, gear ring and planetary gearsets broke away from, and housing spline and axle spline engagement, and the well head TORQ falls through drill string, down-hole drag reduction to be turned round device and be passed to MTR realization combined drilling mode.Utilizing the down-hole drag reduction to fall to turn round device can be under the prerequisite that does not make a trip; Accomplishing slides creeps into and the compound co-conversion mutually that creeps into; And when slip is crept into, can make the drill string unitary rotation to reduce frictional resistance, reach and improve wellbore construction efficient, reduce the purpose of drilling well integrated cost.
Simultaneously, the down-hole drag reduction fall turn round device also have simple in structure, easy to operate, be convenient to install, safe and reliable advantage.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Fig. 2 is the planetary gearsets structure enlarged drawing of A-A position among Fig. 1.
1-housing, 2-bearing, 3-spring, 4-sealing ring, 5-axle, 6-housing spline, 7-axle spline, 8-gear ring, 9-planetary gearsets, 10-seal, 11-pinion frame, 12-size planetary gearsets, 13 centre wheels among the figure.
The specific embodiment
Describe present embodiment in detail below in conjunction with accompanying drawing
Like Fig. 1; Axle 5 is installed in housing 1 inside; Bearing 2 and spring 3 are installed between axle 5 upper ends and the housing 1, and housing spline 6 cooperates with axle spline 7, and gear ring 8 cooperates with planetary gearsets 9; Planetary gearsets 9 is installed on the axle 5 with pinion frame 11, and sealing ring 4 and seal 10 are installed between housing 1 and the axle 4.
Like Fig. 2, planetary gearsets 9 is made up of big or small planetary gearsets 12 and a central gear 13 of three symmetrical distributions, and big or small planetary gearsets 12 is installed on the pinion frame 11, and big or small planetary gearsets 12 can be rotated around central gear 13 with tooth rest 11.
Claims (3)
1. the down-hole drag reduction falls and turns round device; It is characterized in that; Axle (5) is installed in housing (1) inside; Axle (5) top and housing (1) are installed bearing (2) and spring (3) therebetween after pegging graft and cooperating, and axle (5) middle part is divided two sections with housing (1) and combined, and one section is provided in a side of the axle spline (7) on the axle (5) and is located at the mutual grafting cooperation of housing spline (6) on the housing (1); Two sections are provided in a side of the planetary gearsets (9) on the axle (5) and are located at gear ring (8) the rotation cooperation each other on the housing (1), are provided with the seal (10) with axle (5) slipper seal in housing (1) lower end.
2. down-hole according to claim 1 drag reduction falls turns round device, it is characterized in that, described planetary gearsets (9) is fixed on the axle (5) through tooth rest (11) and centre wheel by the big or small planetary gearsets that is symmetrically distributed more than three.
3. down-hole according to claim 1 and 2 drag reduction falls turns round device, it is characterized in that, in axle (5) upper end and housing (1) joint portion sealing ring (4) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204072956U CN202300198U (en) | 2011-10-24 | 2011-10-24 | Underground anti-drag twisting reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204072956U CN202300198U (en) | 2011-10-24 | 2011-10-24 | Underground anti-drag twisting reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300198U true CN202300198U (en) | 2012-07-04 |
Family
ID=46369120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204072956U Withdrawn - After Issue CN202300198U (en) | 2011-10-24 | 2011-10-24 | Underground anti-drag twisting reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300198U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061671A (en) * | 2011-10-24 | 2013-04-24 | 中国石油化工股份有限公司 | Underground anti-drag twisting reducer |
| CN105525871A (en) * | 2014-09-28 | 2016-04-27 | 中国石油化工集团公司 | Hydraulic torque converter |
| CN105715209A (en) * | 2016-03-17 | 2016-06-29 | 长江大学 | Device for decreasing torque and increasing pressure by jetting method |
| CN109750977A (en) * | 2017-11-01 | 2019-05-14 | 陈晓新 | A kind of New well drilling torque increase square, which disappears, to quiver except vibratory tool |
-
2011
- 2011-10-24 CN CN2011204072956U patent/CN202300198U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061671A (en) * | 2011-10-24 | 2013-04-24 | 中国石油化工股份有限公司 | Underground anti-drag twisting reducer |
| CN103061671B (en) * | 2011-10-24 | 2014-12-10 | 中国石油化工股份有限公司 | Underground anti-drag twisting reducer |
| CN105525871A (en) * | 2014-09-28 | 2016-04-27 | 中国石油化工集团公司 | Hydraulic torque converter |
| CN105715209A (en) * | 2016-03-17 | 2016-06-29 | 长江大学 | Device for decreasing torque and increasing pressure by jetting method |
| CN109750977A (en) * | 2017-11-01 | 2019-05-14 | 陈晓新 | A kind of New well drilling torque increase square, which disappears, to quiver except vibratory tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120704 Effective date of abandoning: 20141210 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120704 Effective date of abandoning: 20141210 |
|
| RGAV | Abandon patent right to avoid regrant |