CN201810226U - Well drilling torque-reducing stabilizer - Google Patents
Well drilling torque-reducing stabilizer Download PDFInfo
- Publication number
- CN201810226U CN201810226U CN2010205327958U CN201020532795U CN201810226U CN 201810226 U CN201810226 U CN 201810226U CN 2010205327958 U CN2010205327958 U CN 2010205327958U CN 201020532795 U CN201020532795 U CN 201020532795U CN 201810226 U CN201810226 U CN 201810226U
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- monolithic stability
- wall
- stabilizer
- lower contact
- sliding sleeve
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Abstract
The utility model relates to a well drilling torque-reducing stabilizer which is applied to the field of oilfield well drilling. A body of the well drilling torque-reducing stabilizer is shaped as a column and is provided with a center hole; the upper end of the body is provided with an internal thread, a step column body is arranged on the outer wall of the body, an integral stabilizing sleeve is sleeved on the column body at the lower part of the body, the upper end and the lower end of the integral stabilizing sleeve are respectively provided with a thrust bearing, and the thrust bearings are sleeved on the column body at the lower part of the body; and the lower end of the body is provided with an external thread, a lower joint is provided with an internal thread and in threaded connection with the lower end of the body, the upper end face of the lower joint is in contact with the thrust bearings, the integral stabilizing sleeve is shaped as an annular column, and three or four axial grooves are uniformly arranged on the outer wall of the integral stabilizing sleeve. The utility model improves the stress state of the well wall, is capable of better protecting the well wall, improves the safety and the reliability, and saves the materials.
Description
Technical field
The utility model relates to oil field oil and gas drilling technical field, and particularly drilling well down-hole special tool is that a kind of drilling well subtracts and turns round stabilizer.
Background technology
In the drilling process, often need be connected with the drilling well stabilizer on drill string, can set upright drill string, the protection borehole wall also reduces the drill string moment of torsion.At present, the main standard stabilizer type of using is: whole straightedge stabilizer, one-piece auger stabilizer, interchangeable cover stabilizer, three-wheel stabilizer, variable gauge stabilizer etc.As Chinese patent publication number: CN201354595, provide a kind of " drag reduction falls and turns round the double acting stabilizer ".The outer sleeve body that comprises stabilizer body and the outside, middle part that is enclosed within the stabilizer body, the stabilizer body is by top connection, lower limit mechanism, through hole, upper limit mechanism, lower contact is connected in sequence, some tourelles are installed on the excircle of described outer sleeve body, tourelle comprises rolling element storing apparatus and two rollers, this instrument is equipped with the many rows of dislocation six row rollers in the axial direction, when removing drill string, drill string axially moves in the drilling process, this moment, roller replaced original slip to roll, thereby make the sliding friction of drill string in well become rolling friction, rolling element storing apparatus two ends are provided with the level and smooth chamfering of guiding simultaneously, have lowered underground drill stem frictional force significantly.
But all there is certain limitation in existing stabilizer, especially for not playing stabilizing borehole in the coal bed gas drilling process, sometimes the borehole wall is played destruction.Because, boring coal seam section process, because the special rock behavio(u)r in coal seam, stabilizer is collision friction with it, collapses easily, causes hole instability, has aggravated the risk of borehole well instability.In the coal bed gas drilling process, because the special rock behavio(u)r of coal seam section, when boring chance coal seam section, the rigidity friction of the drill string and the coal seam borehole wall causes the coal seam to collapse easily, makes cutting grain obviously increase, even becomes block.So just cause large rock-carrying ability decline, even stopped up down-hole annular, caused the generation of drilling failures such as bit freezing.Conventional stabilisers generally all is to rotate together with drill string, has also increased the operation torque of whole drill string.
The utility model content
The purpose of this utility model is: provide a kind of drilling well to subtract and turn round stabilizer, improve stabilizer structure, realize the change of stabilizer in the underground work mode, reduce the friction of the stabilizer and the borehole wall.
The technical solution adopted in the utility model is: drilling well subtracts turns round stabilizer, mainly is made up of body, thrust bearing, monolithic stability cover and lower contact.Body is the cylinder bodily form, and centre bore is arranged; There is internal thread the upper end of body, and this physical efficiency is connected on the drill string by internal thread.It is characterized in that: the outer wall at body is the stairstepping cylinder, is with the monolithic stability cover at body lower cylindrical body, at the two ends up and down of monolithic stability cover thrust bearing is arranged respectively, and thrust bearing is enclosed within on the body lower cylindrical body.In the body lower end external screw thread is arranged, lower contact has internal thread, and lower contact is threaded in the lower end of body, and the upper surface of lower contact contacts with thrust bearing, and two thrust bearings can be rotated flexibly.The monolithic stability cover is circle ring column shape, is evenly distributed with three or four axial notches on the outer wall of monolithic stability cover, and axial notch is the passage of the circulation of drilling fluid.
In order to seal thrust bearing, make thrust bearing not influenced by drilling fluid, in the upper end of monolithic stability cover sealing drum is arranged, sealing drum is an one with the monolithic stability cover, sealing sleeve and has sealing ring between sealing drum and body on the outer wall of body.There is sealing drum lower end at monolithic stability cover, and sealing drum is an one with the monolithic stability cover, and sealing sleeve and has sealing ring between sealing drum and lower contact on the outer wall of lower contact.
For the monolithic stability cover can only be rotated when drill string moves downward; The monolithic stability cover can not be rotated by locked when drill string moves upward, and is with an annular sliding sleeve on the outer wall of body, slides over the top of monolithic stability set upper side sealing drum.Inwall at sliding sleeve has axial notch, on the outer wall of body axial notch is arranged, and in sliding sleeve axial notch and body axial notch dive key is arranged.Sliding sleeve can slide up and down along dive key.In the bottom of sliding sleeve three outstanding dogs are arranged downwards, three grooves to lower recess are arranged in the upper end of monolithic stability set upper side sealing drum.The dog of sliding sleeve bottom can embed in the groove of upper end of monolithic stability set upper side sealing drum.When sliding sleeve to lower slider, and after the dog of sliding sleeve embedded in the groove of monolithic stability set upper side sealing drum, the monolithic stability cover can not rotation.
Described sealing ring is a rectangular seal.
There is external screw thread the lower end of lower contact, and the lower contact center-hole diameter is identical with the body center-hole diameter.
Described dive key quantity is three, and three dive keys are evenly distributed on the outer wall of body.
The summary drilling well subtracts the operating principle of turning round stabilizer.Consult Fig. 1.In normal drilling process, body 1 and lower contact 7 are rotated with drill string, 6 in monolithic stability cover because and the frictional force of the borehole wall rotate greatly and not than the frictional force between body 1 and the stabilizer overcoat 6.Stabilizer overcoat 6 leans against and plays the effect of the protection borehole wall on the borehole wall.Drill string moves downward in the process of boring down, because the friction of the borehole wall makes sliding sleeve 3 upwards slippages, the groove of the dog of sliding sleeve 3 lower surfaces and stabilizer overcoat 6 upper ends is threaded off, and realizes stabilizer overcoat 6 non-self-locking states, the 6 energy rotations of stabilizer overcoat.On the contrary, drill string moves upward in the process that pulls out of hole, because the friction of the borehole wall makes sliding sleeve 3 downward slippages, the engagement of the dog of sliding sleeve 3 lower surfaces and stabilizer overcoat 6 upper ends makes stabilizer overcoat 6 realization self-locking states, and stabilizer overcoat 6 can not rotation.At this moment stabilizer overcoat 6 can rotate with body 1, can realize back reaming in trip-out process.
The beneficial effects of the utility model: the utility model drilling well subtracts turns round stabilizer, and stabilizer has improved borehole wall stressing conditions greatly, can well protect the borehole wall, as the borehole wall of coal gas layer; Can reduce the friction torque of the drill string and the borehole wall in addition.Under normal operation, in trip-out process, this stabilizer can be realized the back reaming function, has further prevented the generation of lock of tool drilling, has improved safety and reliability; At last, this stabilizer structure is simple, and each part is all detachable, replacing, does not need whole replacings, has saved material.
Description of drawings
Fig. 1 is that the utility model drilling well subtracts and turns round the stabilizer structure generalized section.
Fig. 2 is that the utility model drilling well subtracts the sliding sleeve 3 structural profile schematic diagrames of turning round stabilizer.
Fig. 3 is that the utility model drilling well subtracts sliding sleeve 3 vertical views of turning round stabilizer.
Among the figure, 1. body, 2. dive key, 3. sliding sleeve, 4. rectangular seal, 5. thrust bearing, 6. monolithic stability cover, 7. lower contact.
The specific embodiment
Embodiment 1: subtract with a drilling well that to turn round stabilizer be example, the utility model is described in further detail.
Consult Fig. 1.The utility model drilling well subtracts turns round stabilizer, is made up of body 1, dive key 2, sliding sleeve 3, rectangular seal 4, thrust bearing 5, monolithic stability cover 6 and lower contact 7.Body 1 is the cylinder bodily form, and centre bore is arranged; There is internal thread the upper end of body 1.
Outer wall at body 1 is the stairstepping cylinder, is with monolithic stability cover 6 at body 1 lower cylindrical body, at the two ends up and down of monolithic stability cover 6 thrust bearing 5 is arranged respectively, and thrust bearing 5 is enclosed within on the body 1 lower cylindrical body.In body 1 lower end external screw thread is arranged, lower contact 7 has internal thread, and lower contact 7 is threaded in the lower end of body 1, and the upper surface of lower contact 7 contacts with thrust bearing 5, and two thrust bearings 5 can rotate flexibly.Monolithic stability cover 6 is a circle ring column shape, is evenly distributed with three axial notches on the outer wall of monolithic stability cover 6.The outer wall that monolithic stability overlaps 6 projections scribbles high-abrasive material.
There is sealing drum upper end at monolithic stability cover 6, and it is one that sealing drum overlaps 6 with monolithic stability, and sealing sleeve and has four sealing rings 4 between sealing drum and body 1 on the outer wall of body 1.There is sealing drum lower end at monolithic stability cover 6, and it is one that sealing drum overlaps 6 with monolithic stability, and sealing sleeve and has four sealing rings between sealing drum and lower contact 7 on the outer wall of lower contact 7.Sealing ring is a rectangular seal 4.
Be with an annular sliding sleeve 3 on the outer wall of body 1, sliding sleeve 3 overlaps the top of 6 upper end sealing drums at monolithic stability.Consult Fig. 2.Inwall at sliding sleeve 3 has axial notch, on the outer wall of body 1 axial notch is arranged, and consults Fig. 1.In sliding sleeve 3 axial notches and body 1 axial notch, dive key 2 is arranged.Dive key 2 quantity are three, and three dive keys 2 are evenly distributed on the outer wall of body 1,120 ° at interval.Consult Fig. 3.In the bottom of sliding sleeve 3 three outstanding dogs are arranged downwards, there are three grooves to lower recess the upper end of overlapping 6 upper end sealing drums at monolithic stability.Consult Fig. 1.The dog of sliding sleeve 3 bottoms can embed (engagement) monolithic stability and overlap in the groove of upper end of 6 upper end sealing drums.
There is external screw thread the lower end of lower contact 7, and lower contact 7 center-hole diameters are identical with body 1 center-hole diameter.
Claims (6)
1. a drilling well subtracts and turns round stabilizer, mainly is made up of body (1), thrust bearing (5), monolithic stability cover (6) and lower contact (7), and body (1) is the cylinder bodily form, and centre bore is arranged; There is internal thread the upper end of body (1), it is characterized in that: the outer wall at body (1) is the stairstepping cylinder, be with monolithic stability cover (6) at body (1) lower cylindrical body, at the two ends up and down of monolithic stability cover (6) thrust bearing (5) is arranged respectively, and thrust bearing (5) is enclosed within on body (1) the lower cylindrical body; In body (1) lower end external screw thread is arranged, lower contact (7) has internal thread, lower contact (7) is threaded in the lower end of body (1), the upper surface of lower contact (7) contacts with thrust bearing (5), monolithic stability cover (6) is a circle ring column shape, is evenly distributed with three or four axial notches on the outer wall of monolithic stability cover (6).
2. drilling well according to claim 1 subtracts turns round stabilizer, it is characterized in that: there is sealing drum the upper end at monolithic stability cover (6), sealing drum and monolithic stability cover (6) are one, and sealing sleeve and has sealing ring between sealing drum and body (1) on the outer wall of body (1); There is sealing drum lower end at monolithic stability cover (6), and sealing drum and monolithic stability cover (6) are one, and sealing sleeve and has sealing ring between sealing drum and lower contact (7) on the outer wall of lower contact (7).
3. drilling well according to claim 1 subtracts turns round stabilizer, it is characterized in that: be with an annular sliding sleeve (3) on the outer wall of body (1), sliding sleeve (3) is on the top of monolithic stability cover (6) upper end sealing drum; Inwall at sliding sleeve (3) has axial notch, on the outer wall of body (1) axial notch is arranged, and in sliding sleeve (3) axial notch and body (1) axial notch dive key (2) is arranged; In the bottom of sliding sleeve (3) three outstanding dogs are arranged downwards, three grooves to lower recess are arranged in the upper end of monolithic stability cover (6) upper end sealing drum; The dog of sliding sleeve (3) bottom can embed in the groove of upper end of monolithic stability cover (6) upper end sealing drum.
4. drilling well according to claim 2 subtracts turns round stabilizer, it is characterized in that: described sealing ring is rectangular seal (4).
5. drilling well according to claim 3 subtracts turns round stabilizer, it is characterized in that: described dive key (2) quantity is three, and three dive keys (2) are evenly distributed on the outer wall of body (1).
6. subtract according to claim 1,2,3,4 or 5 described drilling wells and turn round stabilizer, it is characterized in that: there is external screw thread the lower end of lower contact (7), and lower contact (7) center-hole diameter is identical with body (1) center-hole diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205327958U CN201810226U (en) | 2010-09-15 | 2010-09-15 | Well drilling torque-reducing stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205327958U CN201810226U (en) | 2010-09-15 | 2010-09-15 | Well drilling torque-reducing stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810226U true CN201810226U (en) | 2011-04-27 |
Family
ID=43893169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205327958U Expired - Lifetime CN201810226U (en) | 2010-09-15 | 2010-09-15 | Well drilling torque-reducing stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810226U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401377A (en) * | 2017-09-11 | 2017-11-28 | 长江大学 | A kind of deep drilling anti-friction damping device |
| CN109403881A (en) * | 2018-12-26 | 2019-03-01 | 济源微浪石油设备有限公司 | Interchangeable straight wing stabilizer |
-
2010
- 2010-09-15 CN CN2010205327958U patent/CN201810226U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401377A (en) * | 2017-09-11 | 2017-11-28 | 长江大学 | A kind of deep drilling anti-friction damping device |
| CN109403881A (en) * | 2018-12-26 | 2019-03-01 | 济源微浪石油设备有限公司 | Interchangeable straight wing stabilizer |
| CN109403881B (en) * | 2018-12-26 | 2023-12-26 | 济源微浪石油设备有限公司 | Stabilizer with replaceable straight wings |
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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: 20110427 |