CN203547579U - V-shaped stabilizer for eccentric drilling device - Google Patents
V-shaped stabilizer for eccentric drilling device Download PDFInfo
- Publication number
- CN203547579U CN203547579U CN201320681160.8U CN201320681160U CN203547579U CN 203547579 U CN203547579 U CN 203547579U CN 201320681160 U CN201320681160 U CN 201320681160U CN 203547579 U CN203547579 U CN 203547579U
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- China
- Prior art keywords
- drilling device
- tubular matrix
- drilling
- type eccentric
- stabilizer
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- Expired - Lifetime
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- 238000005553 drilling Methods 0.000 title claims abstract description 78
- 239000003381 stabilizer Substances 0.000 title claims abstract description 39
- 239000011159 matrix material Substances 0.000 claims description 40
- 239000002131 composite material Substances 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000000087 stabilizing effect Effects 0.000 abstract 5
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 241001468684 Diplocardia Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a V-shaped stabilizer for an eccentric drilling device. The V-shaped stabilizer for the eccentric drilling device comprises a tubular base body. The two ends of the tubular base body are respectively provided with a connection structure which is used for being connected with a drilling rod. Two stabilizing blocks are arranged on the outer surface of the middle section of the tubular base body. The direction of the center line of the tubular base body is the axial direction, and the sections of the two stabilizing blocks are approximately of a V shape in the radial direction. When the V-shaped stabilizer for the eccentric drilling device is applied, the tubular base body is connected with the drilling rod and rotates along with the drilling rod. In the process of drilling, the drilling rod vibrates transversely and distorts inevitably, so that the stabilizer deviates from the normal movement trail and makes contact with the wall of a well; the starting contact point serving as the main contact point is one stabilizing block, after the stabilizing block makes contact with the wall of the well, counter-acting force can be applied to the stabilizer, the movement direction is changed, the second contact point, namely the other stabilizing block, of the stabilizer makes contact with the wall of the well, the generated counter-acting force restrains backward rotation of the drilling rod and rapidly enables the transverse vibration of the drilling rod to be smaller, the drilling rod operates stably, and therefore the purposes that the well quality is improved, the service life of a drill bit of the drilling device is prolonged, and the drilling safety is improved are achieved.
Description
Technical field
The utility model relates to a kind of drilling tool stabilizer for industries such as oil and gas well drilling, geological prospecting, mine probings, relates in particular to a kind of V-type eccentric drilling device stabilizer that makes drilling tool more stable work in drilling process.
Background technology
Along with the further increasing of petroleum natural gas exploration dynamics, to improve exploration and development speed, reinforcement drilling safety, the drilling technology of protection reservoir is widely used.On the one hand, in conventional drilling process, generally adopt conventional drilling well stabilizer to control wellbore quality, conventional drilling tool stabilizer easily causes hole instability, has occurred bursting apart, caving in, and at the stable place of drilling tool, causes the husky bit freezing of dirt; In the process that makes a trip, easily at borehole wall step place, be hampered; During stratum a small amount of water outlet, the mixture that landwaste is met formation water is easily attached under drilling tool stabilizer, forms mud drum, blocks annular space; If do not add stabilizer; the oscillation crosswise of the violent drilling tool of drill string vibration is difficult to control, and usually causes drilling tool fracture failure, and drill bit premature wear is cracked; the problems such as hole quality is very poor, so the control of hole quality and the protection of drilling assembly and to increase the service life be a urgent problem.On the other hand, with boring reaming hole technology, can when normally creeping into, expand borehole diameter, not only can connect and save development cost and cycle, be conducive to improve cementing quality, and contribute to strengthen the safety of well control, thereby be widely used.
But oil exploration and development fields constantly expands, the application along with complex drilling technology such as deep-well, ultradeep well, horizontal branch well, casing window sidetracking well, slim hole wells, has had higher requirement to underreamer instrument.Both at home and abroad diplocardia re-drill bit in drilling process, show as torque-on-bit large, suppress that bouncing of drilling tool is serious, oscillation crosswise violent, drill bit and drill string have been caused to infringement in various degree, easily cause downhole safety accident; And because pilot bit and re-drill bit are integral structures, make drill bit poor to stratum adaptive capacity, stress is complicated, very easily gets out spirality well, causes wellbore quality poor, to follow-up work, brings safety and hidden danger of quality.
Utility model content
The purpose of this utility model provides a kind of V-type eccentric drilling device stabilizer that can improve hole trajectory control ability and wellbore quality with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
V-type eccentric drilling device stabilizer described in the utility model comprises tubular matrix, the two ends of described tubular matrix are provided with the syndeton for being connected with drilling rod, the stage casing external surface of described tubular matrix is provided with two stable pieces, the centerline direction of described tubular matrix of take is axial direction, and two described stable pieces are roughly V-shaped in the cross section of radial direction.
In said structure, tubular matrix is for being connected with drilling rod also as the supporter of stablizing piece, two stable pieces are used for making drilling rod held stationary when creeping into, its principle is: during operation, tubular matrix connects and rotates with drilling rod with drilling rod, while creeping into, drilling rod will inevitably oscillation crosswise and torsional deformation, cause stabilizer depart from proper motion track and can contact with the borehole wall, just having started contact point is main contact point, for one of them stable piece, after contact, the borehole wall can produce reaction force to stabilizer, the direction of motion changes, at this moment the second contact point of stabilizer is that another stable piece contacts with the borehole wall, the reaction force producing suppresses drilling rod convolution, make rapidly the oscillation crosswise of drilling rod diminish, stable working.
Particularly, two described stable pieces are slightly less than the radius of well-drilling borehole around the radius of gyration of the center line rotation of described tubular matrix.
As preferably, the angle between two described stable pieces is 0 °～90 °.
As preferably, two described stable pieces are bar shaped and stablize piece, and its axial direction is identical with the axial direction of described tubular matrix.Stablizing the concrete size such as length, width and thickness of piece determines according to the diameter of actual well and drilling tool size.
In order to be round-corner transition structure between two described stable pieces and described tubular matrix, to avoid stress to concentrate, to increase compressive strength, and reduce lower brill resistance.
According to application demand and processing conditions, between two described stable pieces and described tubular matrix one-body molded or respectively processing after be welded to connect again.
In order to increase the scuff resistance of stabilizer, the surface of two described stable pieces is equipped with wearing layer.
Particularly, described wearing layer is surfacing material; Or, described wearing layer be inlay, bonding or hot pressing is embedded in the hard-metal insert on described stable piece, thermally-stabilised glomerocryst tooth or PDC composite sheet.
Preferably, the syndeton at described tubular matrix two ends is the screw thread of being located on described tubular matrix.
More preferably, in described screw thread, the screw thread of described tubular matrix one end is external screw thread, and the screw thread of the described tubular matrix other end is internal thread.
The beneficial effects of the utility model are:
The utility model utilize two each other V-shaped stable piece in rotary course, contact with the borehole wall and realize reaction equilibrium of forces, thereby make drilling rod keep the duty of steady precession, thereby reach, improve wellbore quality, extend drilling tool bit life, improve the object of creeping into safety; This stabilizer is both applicable in conventional drilling process, also applicable to boring in reaming hole process.
Accompanying drawing explanation
Fig. 1 is that stereogram cuts open in the office of V-type eccentric drilling device stabilizer described in the utility model;
Fig. 2 is the A-A cutaway view Amplified image in Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As depicted in figs. 1 and 2, V-type eccentric drilling device stabilizer described in the utility model comprises tubular matrix 1, the aperture of the central through hole 2 of tubular matrix 1 is consistent with the oilhole aperture, center of drilling rod (not shown), the two ends of tubular matrix 1 are provided with the screw thread for being connected with drilling rod, wherein, the screw thread of tubular matrix 1 one end is external screw thread, form pin thread 5, the screw thread of tubular matrix 1 other end is internal thread, form box 3, the stage casing external surface of tubular matrix 1 is provided with two bar shapeds and stablizes piece 4, the axial direction that piece 4 is stablized in bar shaped is identical with the axial direction of tubular matrix 1, the centerline direction of tubular matrix 1 of take is axial direction, it is roughly V-shaped in the cross section of radial direction that piece 4 is stablized in two bar shapeds, " V " clevis angle is that the angle that two bar shapeds are stablized between piece 4 is 0 °～90 °, in this example, be 40 ° of left and right.
As depicted in figs. 1 and 2, better for effect, two bar shapeds are stablized piece 4 and around the radius of gyration of the center line rotation of tubular matrix 1, are slightly less than the radius of well-drilling borehole; Bar shaped is stablized between piece 4 and tubular matrix 1 as round-corner transition structure, comprise bar shaped stablize the two ends of piece 4 and both sides respectively with the junction of tubular matrix 1; Bar shaped is stablized between piece 4 and tubular matrix 1 one-body molded, after also can processing respectively, is welded to connect again; The surface that piece 4 is stablized in two bar shapeds is equipped with wearing layer (not shown), described wearing layer is surfacing material, or, described wearing layer be inlay, bonding or hot pressing is embedded in bar shaped and stablizes the hard-metal insert on piece 4, thermally-stabilised glomerocryst tooth or PDC composite sheet.
In conjunction with Fig. 1, the course of work of V-type eccentric drilling device stabilizer described in the utility model is as follows:
Above-described embodiment is preferred embodiment of the present utility model, is not the restriction to technical solutions of the utility model, such as: the angle that two bar shapeds are stablized between piece 4 also can be greater than 90 °, and just effect is not good enough; It can be also the shape such as oval, square that piece 4 is stablized in bar shaped; The two ends of tubular matrix 1 can be also buckle, to be applicable to the drilling rod of buckle termination; So long as the technical scheme that can realize on the basis of above-described embodiment without creative work all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (10)
1. a V-type eccentric drilling device stabilizer, it is characterized in that: comprise tubular matrix, the two ends of described tubular matrix are provided with the syndeton for being connected with drilling rod, the stage casing external surface of described tubular matrix is provided with two stable pieces, the centerline direction of described tubular matrix of take is axial direction, and two described stable pieces are roughly V-shaped in the cross section of radial direction.
2. V-type eccentric drilling device stabilizer according to claim 1, is characterized in that: two described stable pieces are slightly less than the radius of well-drilling borehole around the radius of gyration of the center line rotation of described tubular matrix.
3. V-type eccentric drilling device stabilizer according to claim 1, is characterized in that: the angle between two described stable pieces is 0 °～90 °.
4. V-type eccentric drilling device stabilizer according to claim 1, is characterized in that: two described stable pieces are bar shaped and stablize piece, and its axial direction is identical with the axial direction of described tubular matrix.
5. V-type eccentric drilling device stabilizer according to claim 1, is characterized in that: between two described stable pieces and described tubular matrix, be round-corner transition structure.
6. according to the V-type eccentric drilling device stabilizer described in any one in claim 1-5, it is characterized in that: one-body molded or after processing, be welded to connect again respectively between two described stable pieces and described tubular matrix.
7. according to the V-type eccentric drilling device stabilizer described in any one in claim 1-5, it is characterized in that: the surface of two described stable pieces is equipped with wearing layer.
8. V-type eccentric drilling device stabilizer according to claim 7, is characterized in that: described wearing layer is surfacing material; Or, described wearing layer be inlay, bonding or hot pressing is embedded in the hard-metal insert on described stable piece, thermally-stabilised glomerocryst tooth or PDC composite sheet.
9. V-type eccentric drilling device stabilizer according to claim 1, is characterized in that: the syndeton at described tubular matrix two ends is the screw thread of being located on described tubular matrix.
10. V-type eccentric drilling device stabilizer according to claim 9, is characterized in that: in described screw thread, the screw thread of described tubular matrix one end is external screw thread, and the screw thread of the described tubular matrix other end is internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681160.8U CN203547579U (en) | 2013-10-31 | 2013-10-31 | V-shaped stabilizer for eccentric drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681160.8U CN203547579U (en) | 2013-10-31 | 2013-10-31 | V-shaped stabilizer for eccentric drilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203547579U true CN203547579U (en) | 2014-04-16 |
Family
ID=50465708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320681160.8U Expired - Lifetime CN203547579U (en) | 2013-10-31 | 2013-10-31 | V-shaped stabilizer for eccentric drilling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203547579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179980A (en) * | 2018-01-05 | 2018-06-19 | 江小三 | A kind of machinery tapered stabilizer |
-
2013
- 2013-10-31 CN CN201320681160.8U patent/CN203547579U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179980A (en) * | 2018-01-05 | 2018-06-19 | 江小三 | A kind of machinery tapered stabilizer |
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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: 20140416 |