CN210768679U - Coiled tubing fishing device - Google Patents
Coiled tubing fishing device Download PDFInfo
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- CN210768679U CN210768679U CN201921708009.2U CN201921708009U CN210768679U CN 210768679 U CN210768679 U CN 210768679U CN 201921708009 U CN201921708009 U CN 201921708009U CN 210768679 U CN210768679 U CN 210768679U
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- outer barrel
- outer side
- fishing
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Abstract
The utility model relates to an oil pipe salvages technical field, is a coiled tubing fishing device, including the top connection, go up urceolus, shutoff steel ball, well urceolus, salvage slips, spiral inner tube, spiral urceolus and guide shoe down, the top connection lower extreme outside is in the same place with the inboard fixed mounting in last urceolus upper end, goes up the urceolus lower extreme outside and is in the same place with the inboard fixed mounting in well urceolus upper end. The utility model has reasonable and compact structure and ingenious conception, and the pin is matched with the rotary groove to lead the spiral outer cylinder to rotate relative to the spiral inner cylinder, thereby leading the guide shoe to lead the top of the fish to rotate and to the interior of the fishing tool; detecting whether the fish is salvaged and gripped or not through the change of the ground pump pressure after the plugging steel ball goes upward and is seated in the first taper hole; the lower end of the descending fishing slip is contracted to clamp the fish top through the second taper hole; the coiled tubing is salvaged through the salvage slips, and the coiled tubing fishing device has the advantages of being efficient, stable, time-saving and labor-saving.
Description
Technical Field
The utility model relates to an oil pipe salvages technical field, is a coiled tubing fishing device.
Background
With the popularization and the application of the coiled tubing in the field of oil and gas downhole operation, the coiled tubing is applied more on an oil and gas field, and simultaneously, more coiled tubing is broken down in a well and other downhole complex conditions occur. Because tools and operation experience for processing complex conditions such as coiled tubing salvage and the like are few in the current operation field, the method is limited in processing of the complex problems, processing is passive, and the success rate is low.
Disclosure of Invention
The utility model provides a coiled tubing fishing device has overcome above-mentioned prior art not enough, and it can effectively solve the difficult problem of salvaging, salvaging the success rate low of current coiled tubing.
The technical scheme of the utility model is realized through following measure: a coiled tubing fishing device comprises an upper joint, an upper outer cylinder, a plugging steel ball, a middle outer cylinder, a lower outer cylinder, a fishing slip, a spiral inner cylinder, a spiral outer cylinder and a guide shoe, wherein the outer side of the lower end of the upper joint is fixedly installed with the inner side of the upper end of the upper outer cylinder; the middle part of the upper outer barrel is provided with a vertically through plugging channel, the plugging channel comprises a first straight hole, a first taper hole and a second straight hole which are sequentially communicated from top to bottom, the first taper hole is a taper hole with a small upper part and a large lower part, the inner side of the lower part of the middle outer barrel is provided with a support ring platform, the middle outer barrel is internally provided with a thrust rod with the upper end positioned in the second straight hole, the lower end of the thrust rod is seated on the support ring platform, and at least two vertically through circulation holes are distributed on the thrust rod along the circumference; a plugging steel ball with the upper part positioned in the first taper hole is arranged in the second straight hole corresponding to the position above the thrust rod, the diameter of the upper end of the first taper hole is a first diameter, the diameter of the lower end of the first taper hole is a second diameter, the diameter of the plugging steel ball is a third diameter, and the third diameter is between the first diameter and the second diameter; the middle part of the lower outer barrel is provided with a fishing channel which is communicated up and down, the fishing channel comprises a third straight hole, a second straight hole and a fourth straight hole which are sequentially communicated from top to bottom, the second straight hole is a tapered hole with a large upper part and a small lower part, a fishing slip with a lower end seat on the inner side of the upper end of the second straight hole is arranged in the third straight hole, the outer side of the lower part of the fishing slip can contract inwards in the radial direction when being subjected to inward extrusion force, and the inner side of the fishing slip is provided with; a limiting ring table is arranged on the outer side of the upper end of the spiral inner barrel, a spring is sleeved on the outer side of the spiral inner barrel corresponding to the position between the limiting ring table and the spiral outer barrel, the upper end of the spring is abutted against the lower end of the limiting ring table, and the lower end of the spring is abutted against the upper end of the spiral outer barrel; at least one pin is fixedly installed on the outer side of the upper portion of the spiral outer barrel, the axis of the pin is perpendicular to the axis of the spiral outer barrel, a rotating groove enabling the rotating pin to move up and down in the rotating groove is formed in the outer side of the spiral inner barrel corresponding to the position below the limiting ring table, the rotating groove is spiral, and the inner end of the pin is located in the rotating groove.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the salvaging slips can be hollow cylindrical, and the lower end of the salvaging slips is evenly distributed with at least three strip openings with upper ends positioned in the middle of the salvaging slips along the circumference.
Four through holes which are communicated up and down can be uniformly distributed on the thrust rod along the circumference.
Two pins can be fixedly arranged on the outer side of the upper part of the spiral outer barrel.
The outer side of the lower end of the upper joint can be fixedly installed together with the inner side of the upper end of the upper outer barrel through threaded connection, the outer side of the lower end of the upper outer barrel can be fixedly installed together with the inner side of the upper end of the middle outer barrel through threaded connection, the outer side 3 of the lower end of the middle outer barrel is fixedly installed together with the inner side of the upper end of the lower outer barrel through threaded connection, the outer side of the lower end of the lower outer barrel can be fixedly installed together with the inner side of the upper end of the spiral inner barrel through threaded connection, and the outer side.
The utility model has reasonable and compact structure and ingenious conception, and the pin is matched with the rotary groove to lead the spiral outer cylinder to rotate relative to the spiral inner cylinder, thereby leading the guide shoe to lead the top of the fish to rotate and to the interior of the fishing tool; detecting whether the fish is salvaged and gripped or not through the change of the ground pump pressure after the plugging steel ball goes upward and is seated in the first taper hole; the lower end of the descending fishing slip is contracted to clamp the fish top through the second taper hole; the coiled tubing is salvaged through the salvage slips, and the coiled tubing fishing device has the advantages of being efficient, stable, time-saving and labor-saving.
Drawings
Fig. 1 is a schematic sectional view of the preferred embodiment of the present invention.
FIG. 2 is a schematic view of the spiral inner barrel of FIG. 1.
The codes in the figures are respectively: the fishing slip comprises a top joint 1, an upper outer cylinder 2, a plugging steel ball 3, a middle outer cylinder 4, a lower outer cylinder 5, a fishing slip 6, a spiral inner cylinder 7, a spring 8, a pin 9, a spiral outer cylinder 10, a guide shoe 11, a thrust rod 12, a support ring table 13, a limit ring table 14, a rotating groove 15, a first taper hole 16, a second taper hole 17 and a circulation hole 18.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in the attached figures 1 and 2, the coiled tubing fishing device comprises an upper joint 1, an upper outer cylinder 2, a plugging steel ball 3, a middle outer cylinder 4, a lower outer cylinder 5, a fishing slip 6, a spiral inner cylinder 7, a spiral outer cylinder 10 and a guide shoe 11, wherein the outer side of the lower end of the upper joint 1 is fixedly installed with the inner side of the upper end of the upper outer cylinder 2, the outer side of the lower end of the upper outer cylinder 2 is fixedly installed with the inner side of the upper end of the middle outer cylinder 4, the outer side of the lower end of the middle outer cylinder 4 is fixedly installed with the inner side of the upper end of the lower outer cylinder 5, the outer side of the lower end of the lower outer cylinder 5 is fixedly installed with the inner side of the upper end of the spiral inner cylinder; the middle part of the upper outer barrel 2 is provided with a vertically through plugging channel, the plugging channel comprises a first straight hole, a first taper hole 16 and a second straight hole which are sequentially communicated from top to bottom, the first taper hole 16 is a taper hole with a small upper part and a big lower part, the inner side of the lower part of the middle outer barrel 4 is provided with a support ring platform 13, the middle outer barrel 4 is internally provided with a thrust rod 12 with the upper end positioned in the second straight hole, the lower end of the thrust rod 12 is seated on the support ring platform 13, and at least two vertically through circulation holes 18 are distributed on the thrust rod 12 along the circumference; a plugging steel ball 3 with the upper part positioned in a first taper hole 16 is arranged in a second straight hole corresponding to the upper position of the thrust rod 12, the diameter of the upper end of the first taper hole 16 is a first diameter, the diameter of the lower end of the first taper hole 16 is a second diameter, the diameter of the plugging steel ball 3 is a third diameter, and the third diameter is between the first diameter and the second diameter; the middle part of the lower outer barrel 5 is provided with a fishing channel which is communicated up and down, the fishing channel comprises a third straight hole, a second taper hole 17 and a fourth straight hole which are communicated in sequence from top to bottom, the second taper hole 17 is a taper hole with a big top and a small bottom, a fishing slip 6 with a lower end seat at the inner side of the upper end of the second taper hole 17 is arranged in the third straight hole, the outer side of the lower part of the fishing slip 6 can contract inwards in the radial direction when being subjected to inward extrusion force, and the inner side of the fishing slip 6 is provided with an; a limit ring platform 14 is arranged on the outer side of the upper end of the spiral inner cylinder 7, a spring 8 is sleeved on the outer side of the spiral inner cylinder 7 corresponding to the position between the limit ring platform 14 and the spiral outer cylinder 10, the upper end of the spring 8 is abutted against the lower end of the limit ring platform 14, and the lower end of the spring 8 is abutted against the upper end of the spiral outer cylinder 10; at least one pin 9 is fixedly installed on the outer side of the upper portion of the spiral outer cylinder 10, the axis of the pin 9 is perpendicular to the axis of the spiral outer cylinder 10, a rotating groove 15 enabling the rotating pin to move up and down in the rotating groove is formed in the outer side of the spiral inner cylinder 7 corresponding to the position below the limiting ring table 14, the rotating groove 15 is spiral, and the inner end of the pin 9 is located in the rotating groove 15.
According to the demand, the fishing slips 6 are the prior known technology, the upper part of the fishing slips 6 is of an integral structure, the lower part of the fishing slips 6 is of a split elastic structure, the inner side of the lower part of the fishing slips 6 is provided with annular slips, and the outer side of the lower part of the fishing slips 6 can contract inwards in the radial direction when being subjected to inward extrusion force. When in use, the utility model is connected to the lower end of the prior known fishing pipe column, and is fixedly arranged with the lower end of the fishing pipe column through the upper joint 1, and then the fishing pipe column is lowered to start fishing operation; firstly, after the guide shoe 11 contacts the fish top, the spring 8 is compressed under the stress, the pin 9 moves upwards in the rotating groove 15, the spiral outer cylinder 10 rotates relative to the spiral inner cylinder 7, and the guide shoe 11 rotates along with the spiral outer cylinder 10, so that the fish top is guided into the guide shoe 11; then, after the guide shoe 11 is introduced into the fish top, lowering the fishing pipe column, enabling the fish top to sequentially pass through the spiral outer cylinder 10, the spiral inner cylinder 7, the lower outer cylinder 5, the slips and the middle outer cylinder 4, continuing to lower the fishing pipe column at the moment, continuing to move the fish top upwards, and pushing the thrust rod 12 upwards when the fish top contacts the lower end of the thrust rod 12, so that the plugging steel ball 3 upwards moves and is seated in the first taper hole 16; before the fallen fish does not enter the fishing device, the ground pump truck continuously pumps liquid into the fishing pipe column, when the plugging steel ball 3 goes upward and is seated in the first taper hole 16, the ground pump pressure can rise due to the fact that the liquid cannot circulate, and therefore whether the fallen fish is caught by the fishing device or not can be detected; finally, when detecting the fish by the utility model discloses salvage and hold the back of grasping, steadily slowly lift the salvage tubular column, grasp the fish and provide initial pretightning force by the elastic force of salvaging slips 6 self, when lifting the salvage tubular column, salvage slips 6 and then grasp the fish outer wall and for urceolus 5 downstream down, salvage slips 6 in-process that moves down, salvage slips 6 lower part split structure and receive the conical surface extrusion of second taper hole 17 and then contract to the internal contraction, clench the fish outer wall through the slips tooth, continue to lift the salvage tubular column and accomplish coiled tubing's salvage operation.
The coiled tubing fishing device can be further optimized or/and improved according to actual needs:
as shown in attached figures 1 and 2, the fishing slips 6 are hollow cylindrical, and at least three strip openings with upper ends located in the middle of the fishing slips 6 are uniformly distributed at the lower ends of the fishing slips 6 along the circumference. In the using process, the fishing slips 6 are provided with the strip openings, so that the lower parts of the fishing slips 6 form a plurality of split elastic structures, and the outer sides of the lower parts of the fishing slips 6 can contract inwards in the radial direction when being subjected to inward extrusion force; thereby completing the fishing operation of the coiled tubing through the annular slip teeth on the inner side of the fishing slip 6.
As shown in fig. 1 and 2, four through holes 18 are uniformly distributed on the thrust rod 12 along the circumference. In use, the arrangement enhances the passage of fluid in the coiled tubing.
As shown in fig. 1 and 2, two pins 9 are fixedly mounted on the outer side of the upper part of the spiral outer cylinder 10. In the use process, the arrangement improves the stability of the pin 9 moving up and down in the rotating groove 15, so that the spiral outer cylinder 10 can rotate relative to the spiral inner cylinder 7 more stably and reliably.
As shown in the attached drawings 1 and 2, the outer side of the lower end of an upper joint 1 is fixedly installed with the inner side of the upper end of an upper outer cylinder 2 through threaded connection, the outer side of the lower end of the upper outer cylinder 2 is fixedly installed with the inner side of the upper end of a middle outer cylinder 4 through threaded connection, the outer side of the lower end of the middle outer cylinder 4 is fixedly installed with the inner side of the upper end of a lower outer cylinder 5 through threaded connection, the outer side of the lower end of the lower outer cylinder 5 is fixedly installed with the inner side of the upper end of a spiral inner cylinder 7 through threaded connection, and the outer side of the. In the use, be convenient for through such setting the utility model discloses dismantlement and installation between each part.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (8)
1. A coiled tubing fishing device is characterized by comprising an upper joint, an upper outer cylinder, a plugging steel ball, a middle outer cylinder, a lower outer cylinder, a fishing slip, a spiral inner cylinder, a spiral outer cylinder and a guide shoe, wherein the outer side of the lower end of the upper joint is fixedly installed with the inner side of the upper end of the upper outer cylinder; the middle part of the upper outer barrel is provided with a vertically through plugging channel, the plugging channel comprises a first straight hole, a first taper hole and a second straight hole which are sequentially communicated from top to bottom, the first taper hole is a taper hole with a small upper part and a large lower part, the inner side of the lower part of the middle outer barrel is provided with a support ring platform, the middle outer barrel is internally provided with a thrust rod with the upper end positioned in the second straight hole, the lower end of the thrust rod is seated on the support ring platform, and at least two vertically through circulation holes are distributed on the thrust rod along the circumference; a plugging steel ball with the upper part positioned in the first taper hole is arranged in the second straight hole corresponding to the position above the thrust rod, the diameter of the upper end of the first taper hole is a first diameter, the diameter of the lower end of the first taper hole is a second diameter, the diameter of the plugging steel ball is a third diameter, and the third diameter is between the first diameter and the second diameter; the middle part of the lower outer barrel is provided with a fishing channel which is communicated up and down, the fishing channel comprises a third straight hole, a second straight hole and a fourth straight hole which are sequentially communicated from top to bottom, the second straight hole is a tapered hole with a large upper part and a small lower part, a fishing slip with a lower end seat on the inner side of the upper end of the second straight hole is arranged in the third straight hole, the outer side of the lower part of the fishing slip can contract inwards in the radial direction when being subjected to inward extrusion force, and the inner side of the fishing slip is provided with; a limiting ring table is arranged on the outer side of the upper end of the spiral inner barrel, a spring is sleeved on the outer side of the spiral inner barrel corresponding to the position between the limiting ring table and the spiral outer barrel, the upper end of the spring is abutted against the lower end of the limiting ring table, and the lower end of the spring is abutted against the upper end of the spiral outer barrel; at least one pin is fixedly installed on the outer side of the upper portion of the spiral outer barrel, the axis of the pin is perpendicular to the axis of the spiral outer barrel, a rotating groove enabling the rotating pin to move up and down in the rotating groove is formed in the outer side of the spiral inner barrel corresponding to the position below the limiting ring table, the rotating groove is spiral, and the inner end of the pin is located in the rotating groove.
2. The coiled tubing fishing device of claim 1, wherein the fishing slip is hollow cylindrical, and the lower end of the fishing slip is uniformly provided with at least three strip openings with upper ends located in the middle of the fishing slip along the circumference.
3. The coiled tubing fishing device of claim 1 or 2, wherein four through holes are uniformly distributed on the thrust rod along the circumference.
4. The coiled tubing fishing device of claim 1 or 2, wherein two pins are fixedly mounted on the outer side of the upper part of the spiral outer cylinder.
5. The coiled tubing fishing device of claim 3, wherein two pins are fixedly mounted on the outer side of the upper part of the spiral outer cylinder.
6. The coiled tubing fishing device of claim 1, 2 or 5, wherein the outer side of the lower end of the upper joint is fixedly mounted with the inner side of the upper end of the upper outer barrel through threaded connection, the outer side of the lower end of the upper outer barrel is fixedly mounted with the inner side of the upper end of the middle outer barrel through threaded connection, the outer side of the lower end of the middle outer barrel is fixedly mounted with the inner side of the upper end of the lower outer barrel through threaded connection, the outer side of the lower end of the lower outer barrel is fixedly mounted with the inner side of the upper end of the spiral inner barrel through threaded connection, and the outer side of the lower end of the.
7. The coiled tubing fishing device of claim 3, wherein the outer side of the lower end of the upper joint is fixedly mounted with the inner side of the upper end of the upper outer barrel through threaded connection, the outer side of the lower end of the upper outer barrel is fixedly mounted with the inner side of the upper end of the middle outer barrel through threaded connection, the outer side of the lower end of the middle outer barrel is fixedly mounted with the inner side of the upper end of the lower outer barrel through threaded connection, the outer side of the lower end of the lower outer barrel is fixedly mounted with the inner side of the upper end of the spiral inner barrel through threaded connection, and the outer side of the lower end of the.
8. The coiled tubing fishing device of claim 4, wherein the outer side of the lower end of the upper joint is fixedly mounted with the inner side of the upper end of the upper outer barrel through threaded connection, the outer side of the lower end of the upper outer barrel is fixedly mounted with the inner side of the upper end of the middle outer barrel through threaded connection, the outer side of the lower end of the middle outer barrel is fixedly mounted with the inner side of the upper end of the lower outer barrel through threaded connection, the outer side of the lower end of the lower outer barrel is fixedly mounted with the inner side of the upper end of the spiral inner barrel through threaded connection, and the outer side of the lower end of the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921708009.2U CN210768679U (en) | 2019-10-12 | 2019-10-12 | Coiled tubing fishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921708009.2U CN210768679U (en) | 2019-10-12 | 2019-10-12 | Coiled tubing fishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210768679U true CN210768679U (en) | 2020-06-16 |
Family
ID=71066225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921708009.2U Active CN210768679U (en) | 2019-10-12 | 2019-10-12 | Coiled tubing fishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210768679U (en) |
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2019
- 2019-10-12 CN CN201921708009.2U patent/CN210768679U/en active Active
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