CN111997543B - Reamer type sand washing pen point - Google Patents
Reamer type sand washing pen point Download PDFInfo
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- CN111997543B CN111997543B CN201910445027.4A CN201910445027A CN111997543B CN 111997543 B CN111997543 B CN 111997543B CN 201910445027 A CN201910445027 A CN 201910445027A CN 111997543 B CN111997543 B CN 111997543B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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Abstract
The invention discloses a reamer type sand washing pen point, which comprises an inner cylinder body (2) and an outer pen point cylinder (6) which are sleeved inside and outside, wherein a spiral track (3) is arranged on the outer surface of the inner cylinder body (2), a track pin (4) is arranged between the inner cylinder body (2) and the outer pen point cylinder (6), one end of the track pin (4) is fixedly connected with the outer pen point cylinder (6), the other end of the track pin (4) is positioned in the spiral track (3), and when the inner cylinder body (2) moves relative to the outer pen point cylinder (6) along the axial direction, the inner cylinder body (2) can drive the outer pen point cylinder (6) to rotate. The reamer type sand washing pen point combines mechanical crushing and hydraulic impact, improves the operation efficiency, and enables sand particles to be finer, so that sand washing liquid is facilitated to carry sand to return upwards.
Description
Technical Field
The invention relates to the technical field of oilfield well repair, in particular to a reamer type sand washing pen point.
Background
At present, in the sand washing operation of oil fields, hydraulic sand washing or a rotary sand washing pen point and a hydraulic impact type sand washing pen point which adopt fluid as power are mostly adopted, and certain effects are achieved in field application. But the sand washing effect of the rotary or impact type pen point is not ideal.
Disclosure of Invention
In order to improve the sand washing effect, the invention provides the reamer type sand washing pen point, which combines mechanical crushing and hydraulic impact, improves the operation efficiency, enables sand particles to be finer and is beneficial to sand-carrying upward return of sand washing liquid.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a reamer formula sand washing nib, includes interior barrel and the outer nib section of thick bamboo that the endotheca was established, and the surface of interior barrel is equipped with the spiral track, is equipped with the track pin between interior barrel and the outer nib section of thick bamboo, and the one end and the outer nib section of thick bamboo of track pin are connected fixedly, and the other end of track pin is located the spiral track, and when interior barrel was for outer nib section of thick bamboo along axial displacement, the rotation of the outer nib section of thick bamboo of interior barrel can drive.
The axis of the inner cylinder body is coincided with the axis of the outer pen point cylinder, and the inner cylinder body is in an upright state.
The upper end of the inner cylinder body is connected with a coupling.
The outer nib section of thick bamboo contains big footpath section, changeover portion and the path section that connects gradually from the top down.
The lower part of the inner cylinder body is sleeved in the large-diameter section of the outer pen point cylinder, and a reamer is arranged outside the small-diameter section of the outer pen point cylinder.
One end of the track pin is fixedly connected with the large-diameter section of the outer nib barrel, and the inner diameter of the inner barrel body is equal to the inner diameter of the small-diameter section of the outer nib barrel.
The fixed cover is equipped with the valve plate in the lower extreme of interior barrel, is equipped with central through-hole and marginal through-hole on the valve plate, and central through-hole is located the central authorities of valve plate, and marginal through-hole is located between central through-hole and the edge of valve plate.
The edge through holes are distributed along the circumferential direction of the valve plate, the aperture of each edge through hole is smaller than that of the central through hole, the axis of each central through hole coincides with the axis of the inner cylinder, and the axis of each edge through hole is parallel to the axis of the inner cylinder.
The reamer type sand washing pen point comprises a valve ball, wherein the valve ball is located on a central through hole of the valve plate, and the valve ball can plug the central through hole.
The reamer type sand washing pen point comprises a ball cover, wherein the ball cover is of a cylindrical structure with a closed top end and an open bottom end, a valve ball is positioned in the ball cover, the inner diameter of the ball cover is larger than the diameter of the valve ball, the bottom end of the ball cover is fixedly connected with a flow distribution plate, and a through hole is formed in the side wall of the ball cover.
The beneficial effects of the invention are: the gravity of the tubular column can be utilized to force the end part of the pen point to automatically rotate downwards to destroy the sand surface, so that the sand body is broken, the sand body is favorable for returning upwards, meanwhile, the broken sand body is quickly returned by combining the impact action of liquid, and the problem that the past sand washing pen point is unreliable by depending on the liquid rotation type is overcome.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic view of an reamer-type sand-washing nib of the present invention.
Fig. 2 is a top view of the port plate.
1. A coupling; 2. an inner cylinder; 3. a spiral track; 4. a rail pin; 5. a reamer; 6. an outer nib barrel; 7. a ball cover; 8. a valve ball; 9. a valve plate;
91. a central through hole; 92. an edge via.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The utility model provides a reamer formula sand washing nib, interior barrel 2 and outer nib section of thick bamboo 6 of establishing including the endotheca, the surface of interior barrel 2 is equipped with spiral track 3, be equipped with track pin 4 between interior barrel 2 and the outer nib section of thick bamboo 6, the one end and the outer nib section of thick bamboo 6 of track pin 4 are connected fixedly, the other end of track pin 4 is located spiral track 3, when interior barrel 2 is for outer nib section of thick bamboo 6 along the axial displacement of outer nib section of thick bamboo 6, interior barrel 2 can drive outer nib section of thick bamboo 6 rotation, the axis that interior barrel 2 can drive outer nib section of thick bamboo 6 and use outer nib section of thick bamboo 6 rotates as the axle promptly, as shown in figure 1.
In this embodiment, the inner cylinder 2 is in an upright state, and the upper end of the inner cylinder 2 is connected with the coupling 1. The axis of the coupling 1, the axis of the inner cylinder 2 and the axis of the outer nib cylinder 6 coincide. The upper part of the coupling 1 is used for connecting other downhole tools, and the lower part of the coupling 1 is connected with the upper end of the inner cylinder body 2; the inner cylinder 2 is connected with the coupling 1 through threads or other fixing methods.
In this embodiment, the outer nib barrel 6 includes a large diameter section, a transition section, and a small diameter section which are connected in sequence from top to bottom. The wall thickness of the large-diameter section, the transition section and the small-diameter section is the same, the inner diameter of the large-diameter section is larger than that of the small-diameter section, and the transition section is in a cone frustum shape.
In this embodiment, the lower part of the inner cylinder 2 is sleeved in the large diameter section of the outer nib cylinder 6, the outer diameter of the inner cylinder 2 is equal to the inner diameter of the large diameter section of the outer nib cylinder 6, and the small diameter section of the outer nib cylinder 6 is externally provided with a spiral sheet-shaped reamer 5. The lower end of the outer nib barrel 6 is wedge-shaped so as to be conveniently and deeply inserted into the sand body.
In this embodiment, one end of the rail pin 4 is fixedly connected with the large diameter section of the outer nib barrel 6, and the inner diameter of the inner barrel 2 is equal to the inner diameter of the small diameter section of the outer nib barrel 6. The outer diameter of the reamer 5 is less than or equal to the outer diameter of the large-diameter section of the outer nib barrel 6.
In this embodiment, a flow distribution plate 9 is fixedly sleeved in the lower end of the inner cylinder 2, the flow distribution plate 9 is of a cylindrical structure, a central through hole 91 and an edge through hole 92 are arranged on the flow distribution plate 9, the central through hole 91 is located in the center of the flow distribution plate 9, the edge through hole 92 is located between the central through hole 91 and the edge of the flow distribution plate 9, and the central through hole 91 and the flow distribution plate 9 both penetrate through the upper end and the lower end of the flow distribution plate 9, as shown in fig. 2.
In this embodiment, the port plate 9 is in threaded connection with the inner cylinder 2, a plurality of edge through holes 92 are distributed along the circumferential direction of the port plate 9, the aperture of the edge through hole 92 is smaller than that of the central through hole 91, the axis of the central through hole 91 coincides with the axis of the inner cylinder 2, the axis of the edge through hole 92 is parallel to the axis of the inner cylinder 2, and the upper end of the central through hole 91 is provided with a chamfer transition.
In this embodiment, the reamer type sand washing pen point comprises a valve ball 8 and a ball cover 7, wherein the valve ball 8 is located on a central through hole 91 of the valve plate 9, and the valve ball 8 can block the central through hole 91. The ball cover 7 is a cylindrical structure with a closed top end and an open bottom end, the valve ball 8 is positioned in the ball cover 7, the inner diameter of the ball cover 7 is larger than the diameter of the valve ball 8, the bottom end of the ball cover 7 is fixedly connected (such as welded) with the valve plate 9, and a through hole is formed in the side wall of the ball cover 7. The liquid below the valve plate 9 can pass through the central through hole 91 and the through hole on the side wall of the ball cover 7 in sequence, enter the inner cylinder 2 and continue flowing upwards.
The operation of the reamer-type sand-washing pen tip will now be described.
When the reamer type sand washing pen point works, the upper end of the reamer type sand washing pen point is connected and fixed with the lower end of the pipe column, so that the reamer type sand washing pen point goes to the bottom of the well along with the pipe column, then the pipe column is lifted and lowered continuously and alternately, and at the moment, the lower end of the outer pen point barrel 6 impacts and damages sand bodies.
In the lowering process, due to the weight and the inertia effect of a pipe column on the upper portion of the inner cylinder body 2, the outer pen point cylinder 6 and the rail pin 4 rotate along the spiral rail 3, namely the outer pen point cylinder 6 rotates by taking the axis of the inner cylinder body 2 as an axis, the sand body in contact with the reamer 5 upwards breaks and moves, meanwhile, high-pressure sand washing liquid is injected into the inner cylinder body 2, at the moment, due to the effect of the valve ball 8, the sand washing liquid can only wash out from the edge through hole 92 of the flow distribution plate 9, the overflowing area is small, the impact force is relatively large, the sand body is damaged under the action of the machine and the liquid, the operation is repeated continuously, when the design depth is reached, the pressure liquid is injected into the oil sleeve annulus, and at the moment, the liquid returns to the ground through the oil pipe via the oil sleeve annulus. When the sand content in the ground sand washing liquid is less than the standard value, the pipe column is repeatedly lowered to destroy the sand body, and when the designed depth is reached, the sand washing liquid is used for washing sand until the sand body is qualified.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.
Claims (9)
1. The reamer type sand washing pen point is characterized by comprising an inner cylinder body (2) and an outer pen point cylinder (6) which are sleeved with each other, wherein a spiral track (3) is arranged on the outer surface of the inner cylinder body (2), a track pin (4) is arranged between the inner cylinder body (2) and the outer pen point cylinder (6), one end of the track pin (4) is fixedly connected with the outer pen point cylinder (6), the other end of the track pin (4) is positioned in the spiral track (3), and when the inner cylinder body (2) moves relative to the outer pen point cylinder (6) along the axial direction, the inner cylinder body (2) can drive the outer pen point cylinder (6) to rotate;
the fixed cover is equipped with valve plate (9) in the lower extreme of interior barrel (2), is equipped with central through-hole (91) and marginal through-hole (92) on valve plate (9), and central through-hole (91) are located the central authorities of valve plate (9), and marginal through-hole (92) are located between the edge of central through-hole (91) and valve plate (9).
2. The reamer-type sanding pen tip according to claim 1, characterized in that the axis of the inner cylinder (2) coincides with the axis of the outer nib cylinder (6), the inner cylinder (2) being in an upright position.
3. The reamer-type sand washing nib according to claim 2, characterized in that the upper end of the inner cylinder (2) is connected to the collar (1).
4. The reamer-type sand-washing pen tip as claimed in claim 2, characterized in that the outer pen tip barrel (6) comprises a large-diameter section, a transition section and a small-diameter section which are connected in sequence from top to bottom.
5. The reamer-type sand washing pen tip as claimed in claim 4, wherein the lower part of the inner cylinder (2) is sleeved in the large diameter section of the outer pen tip cylinder (6), and the reamer (5) is arranged outside the small diameter section of the outer pen tip cylinder (6).
6. The reamer-type sanding pen tip according to claim 5, characterized in that one end of the rail pin (4) is fixedly connected to the large diameter section of the outer nib barrel (6), and the inner diameter of the inner barrel (2) is equal to the inner diameter of the small diameter section of the outer nib barrel (6).
7. The reamer-type sand washing pen tip as claimed in claim 1, wherein a plurality of edge through holes (92) are distributed along the circumferential direction of the port plate (9), the aperture of the edge through holes (92) is smaller than that of the central through hole (91), the axis of the central through hole (91) coincides with the axis of the inner cylinder (2), and the axis of the edge through hole (92) is parallel to the axis of the inner cylinder (2).
8. The reamer-type sand-washing pen tip according to claim 1, characterized in that it comprises a valve ball (8), the valve ball (8) being seated on a central through hole (91) of the port plate (9), the valve ball (8) being able to block the central through hole (91).
9. The reamer type sand washing pen tip as claimed in claim 8, characterized in that the reamer type sand washing pen tip comprises a ball cover (7), the ball cover (7) is a cylindrical structure with a closed top end and an open bottom end, the valve ball (8) is positioned in the ball cover (7), the inner diameter of the ball cover (7) is larger than the diameter of the valve ball (8), the bottom end of the ball cover (7) is fixedly connected with the port plate (9), and through holes are formed in the side wall of the ball cover (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445027.4A CN111997543B (en) | 2019-05-27 | 2019-05-27 | Reamer type sand washing pen point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445027.4A CN111997543B (en) | 2019-05-27 | 2019-05-27 | Reamer type sand washing pen point |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111997543A CN111997543A (en) | 2020-11-27 |
| CN111997543B true CN111997543B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910445027.4A Active CN111997543B (en) | 2019-05-27 | 2019-05-27 | Reamer type sand washing pen point |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419397A (en) * | 1993-06-16 | 1995-05-30 | Well-Flow Technologies, Inc. | Well cleaning tool with scratching elements |
| CN201100102Y (en) * | 2007-11-02 | 2008-08-13 | 辽河石油勘探局 | Rotary type milling sand-washing pen point |
| CN203685078U (en) * | 2013-11-29 | 2014-07-02 | 中国石油天然气股份有限公司 | Rotary drilling type sand washing pen point |
| CN203808883U (en) * | 2014-02-10 | 2014-09-03 | 中国石油天然气股份有限公司 | Constant-pressure sand washing pen point |
| US9145748B1 (en) * | 2014-10-29 | 2015-09-29 | C&J Energy Services, Inc. | Fluid velocity-driven circulation tool |
| CN206129235U (en) * | 2016-10-17 | 2017-04-26 | 荆州市赛瑞能源技术有限公司 | Coiled tubing wax removal scale removal instrument |
| CN207315306U (en) * | 2017-09-07 | 2018-05-04 | 中国石油天然气股份有限公司 | Impact crushing type sand washing pen point |
-
2019
- 2019-05-27 CN CN201910445027.4A patent/CN111997543B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419397A (en) * | 1993-06-16 | 1995-05-30 | Well-Flow Technologies, Inc. | Well cleaning tool with scratching elements |
| CN201100102Y (en) * | 2007-11-02 | 2008-08-13 | 辽河石油勘探局 | Rotary type milling sand-washing pen point |
| CN203685078U (en) * | 2013-11-29 | 2014-07-02 | 中国石油天然气股份有限公司 | Rotary drilling type sand washing pen point |
| CN203808883U (en) * | 2014-02-10 | 2014-09-03 | 中国石油天然气股份有限公司 | Constant-pressure sand washing pen point |
| US9145748B1 (en) * | 2014-10-29 | 2015-09-29 | C&J Energy Services, Inc. | Fluid velocity-driven circulation tool |
| CN206129235U (en) * | 2016-10-17 | 2017-04-26 | 荆州市赛瑞能源技术有限公司 | Coiled tubing wax removal scale removal instrument |
| CN207315306U (en) * | 2017-09-07 | 2018-05-04 | 中国石油天然气股份有限公司 | Impact crushing type sand washing pen point |
Non-Patent Citations (1)
| Title |
|---|
| 漏失井冲砂工艺管柱研究与现场试验;刘扬等;《石油机械》;20081010(第10期);全文 * |
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