CN219864914U - Pump-out type multifunctional releaser for well logging and special release club assembly thereof - Google Patents
Pump-out type multifunctional releaser for well logging and special release club assembly thereof Download PDFInfo
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- CN219864914U CN219864914U CN202321293169.1U CN202321293169U CN219864914U CN 219864914 U CN219864914 U CN 219864914U CN 202321293169 U CN202321293169 U CN 202321293169U CN 219864914 U CN219864914 U CN 219864914U
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- Prior art keywords
- joint
- releaser
- hanging
- pump
- release
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- 238000007789 sealing Methods 0.000 claims abstract description 26
- 210000000078 claw Anatomy 0.000 claims abstract description 22
- 238000010008 shearing Methods 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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Abstract
The utility model discloses a pump-out type multifunctional releaser for well logging, which comprises a hanging seat, wherein a sealing ring is arranged on the outer wall of the hanging seat, a hanging joint is arranged in the hanging seat, a limiting sleeve is arranged at the upper part of the hanging joint, a horn mouth is arranged at the upper part of the limiting sleeve, a plurality of shearing pins and sealing rings are arranged between the limiting sleeve and the hanging seat, an elastic salvaging claw with an inner conical surface is arranged in the hanging joint, a mud circulation joint with a mud circulation hole is arranged at the lower part of the hanging joint, and a landing joint is arranged at the lower part of the mud circulation joint. The releaser disclosed by the utility model can be used for selecting rod-throwing type or ball-throwing type operation according to different well conditions during construction. For a horizontal well with a severe underground environment and a complex well condition, rod throwing operation is adopted, so that the instrument string can be salvaged when the drilling tool encounters a blockage or the like.
Description
Technical Field
The utility model belongs to the field of petroleum logging, and particularly relates to a pump-out type multifunctional releaser for logging and a special release club assembly thereof.
Background
The horizontal well technology can obviously improve the productivity of marginal economic oil fields, reduce the comprehensive cost and improve the exploitation quantity of oil layers. The pump-out logging is a main technology of the logging of the horizontal well at present, and the releaser is a release mechanism commonly used in pump-out logging, the basic principle of the pump-out logging is that a logging instrument string is connected with the releaser and is suspended in an instrument protecting sleeve, after the protecting sleeve with the instrument string is conveyed to a target layer through a drilling tool, a release rod or a release ball is put into a wellhead, a pumping pressure is added to convey the release rod or the release ball into the releaser to realize sealing, and when the pressure difference in a shaft reaches a certain value, a shearing pin on the releaser can be sheared to complete the release action. The traditional releaser is mostly a single type releaser, such as a single-throw rod or a single-throw ball releaser, and the release pressure difference of the rod releaser is not obvious, so that whether the instrument string is successfully released or not is difficult to judge in construction, the ball releaser can be blocked by a release ball after being released, the instrument string cannot be salvaged when a drilling tool encounters a blockage, and potential safety hazards are generated.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a pump-out type multifunctional releaser for logging, a special release bat assembly and a release salvaging method thereof.
The utility model adopts the following technical scheme:
in a multi-functional releaser for pump-out logging, the improvement comprising: the device comprises a hanging seat, wherein a sealing ring is arranged on the outer wall of the hanging seat, a hanging joint is arranged in the hanging seat, a limiting sleeve is arranged on the upper portion of the hanging joint, a horn mouth is arranged on the upper portion of the limiting sleeve, a plurality of shearing pins and sealing rings are arranged between the limiting sleeve and the hanging seat, an elastic salvaging claw with an inner conical surface is arranged in the hanging joint, a mud circulation joint with a mud circulation hole is arranged on the lower portion of the hanging joint, and a landing joint is arranged on the lower portion of the mud circulation joint.
Further, an inner conical surface is arranged in the suspension joint, and an outer conical surface corresponding to the inner conical surface is arranged at the upper part of the salvaging claw.
Further, a slit is formed in the surface of the salvaging claw.
Further, the lower part of the suspension joint is connected with the mud circulation joint through a threaded ring.
In a release bat assembly, a multi-functional release for use in a pump-out logging system as described above, the improvement comprising: the fishing device comprises a capturing head, a rubber plug, a centralizer, a sealing ball head and a fishing head which are sequentially connected from top to bottom, wherein the sealing ball head can be tightly attached to a horn mouth on the upper part of a limiting sleeve to form a seal, and the lower surface of the fishing head is a conical surface.
A release fishing method, suitable for use with the release, the improvement comprising:
when the rod throwing type release is adopted, after the instrument string hung by the releaser reaches a target layer, throwing the release rod assembly into a wellhead, inserting a salvaging head of the release rod assembly into a salvaging claw of the releaser under the action of a pumping pressure, tightly fitting a sealing ball head with a bell mouth at the upper part of a limiting sleeve of the releaser to form a seal, sealing the limiting sleeve and a hanging seat at the moment, and cutting a shearing pin by mud pressure to finish the release action when the pressure difference in the shaft reaches a certain value;
when the ball throwing type release is adopted, after the instrument string hung by the releaser reaches a target layer, a releasing ball is thrown into a wellhead, when the releasing ball falls into the releaser, the spherical surface is tightly attached to a bell mouth at the upper part of a limiting sleeve of the releaser to form a seal, and at the moment, the space between the limiting sleeve and a hanging seat is also sealed, and when the pressure difference in the shaft reaches a certain value, a shearing pin is sheared by mud pressure to finish the release action;
when salvaging, the capturing head of the release bat assembly is lifted up, at the moment, the conical surface of the lower surface of the salvaging head of the release bat assembly is attached to the inner conical surface of the salvaging claw of the releaser, the lower surface of the salvaging head of the release bat assembly and the inner conical surface of the salvaging claw are moved upwards together, and when the outer conical surface of the upper part of the salvaging claw is attached to the inner conical surface of the hanging joint of the releaser, the salvaging head is limited at the inner conical surface, so that the releaser and the hanging instrument string thereof are lifted up together until the wellhead is fished out.
The beneficial effects of the utility model are as follows:
the releaser disclosed by the utility model can be used for selecting rod-throwing type or ball-throwing type operation according to different well conditions during construction. For a horizontal well with a severe underground environment and a complex well condition, rod throwing operation is adopted, so that the instrument string can be salvaged when the drilling tool encounters a blockage or the like; for a horizontal well or a highly inclined well with good well conditions, the ball throwing operation is adopted, the operation is simple, and the cost is low. The salvaging claw is an elastic piece which can be opened and closed under the action of external force, so that the salvaging head of the club assembly is captured and released, and the salvaging function is realized; the shear pin subjected to the special heat treatment process can obviously observe the change of the release pressure difference during construction, is favorable for judging whether the whole instrument string is pumped out of the bottom of the well or not, and ensures the safety of logging construction.
The release ball bat assembly disclosed by the utility model can realize a salvageable function through the cooperation between the salvaging head and the salvaging claw of the releaser.
The release salvaging method disclosed by the utility model can select different operation processes according to specific conditions, so that the operation is simplified to the maximum extent and the cost is saved.
Drawings
FIG. 1 is a schematic view showing the overall structure of a releaser disclosed in embodiment 1 of the present utility model;
FIG. 2 is a schematic diagram of the fishing pawl of the release disclosed in embodiment 1 of the present utility model;
FIG. 3 is a schematic illustration of the release bat assembly of embodiment 1 of the present utility model;
FIG. 4 is a schematic diagram of the release fishing method according to embodiment 1 of the present utility model when the release is completed;
FIG. 5 is a schematic diagram of a pitching operation in the release fishing method disclosed in embodiment 1 of the present utility model;
fig. 6 is a diagram of the fishing action in the release fishing method disclosed in example 1 of the present utility model.
Reference numerals: 1-release club assembly, 2-suspension seat, 3-salvage claw, 4-limit sleeve, 5-landing joint, 6-suspension joint, 7-slurry circulation joint, 8-threaded ring, 9-shear pin, 10-sealing ring, 11-sealing ring, 12-slurry circulation hole, 13-capture head, 14-salvage head, 15-rubber plug, 16-centralizer, 17-sealing ball head, 18-release ball, 19-slotting.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Embodiment 1, as shown in fig. 1, the embodiment discloses a pump-out type multifunctional releaser for logging, which comprises a hanging seat 2, wherein a sealing ring 10 is arranged on the outer wall of the hanging seat, and the sealing ring can ensure the sealing between the hanging seat (releaser) and a shaft. The hanging connector 6 is arranged in the hanging seat, the limit sleeve 4 is arranged on the upper portion of the hanging connector, the upper portion of the limit sleeve is a horn mouth, the shearing pins 9 and the sealing rings 11 are arranged between the limit sleeve and the hanging seat, and the sealing rings can ensure the sealing between the limit sleeve and the hanging seat. An elastic salvaging claw 3 with an inner conical surface is arranged in the suspension joint, a mud circulation joint 7 with a mud circulation hole 12 is arranged at the lower part of the suspension joint, and a landing joint 5 is arranged at the lower part of the mud circulation joint. An inner conical surface is arranged in the suspension joint, and an outer conical surface corresponding to the inner conical surface is arranged at the upper part of the salvaging claw. As shown in fig. 2, a slit 19 is provided on the surface of the salvaging jaw. The lower part of the suspension joint is connected with the mud circulation joint through a threaded ring 8.
As shown in fig. 1 and 3, this embodiment also discloses a release bat assembly 1, which is specially used for the pump-out type multifunctional releaser for logging, and comprises a capturing head 13, a rubber plug 15, a centralizer 16, a sealing ball head 17 and a salvaging head 14 which are sequentially connected together from top to bottom, wherein the rubber plug plays a role in sealing a shaft, and the centralizer plays a role in centralizing the release bat assembly. The sealing ball head can be tightly attached to the horn mouth on the upper part of the limit sleeve to form a seal, and the lower surface of the salvaging head is a conical surface.
When the release bat assembly reaches the inside of the releaser under the action of the pump pressure, the lower conical surface of the salvage head can open the salvage claw in the inside of the releaser under the pump pressure and pass through, and the salvage claw can be automatically closed after the salvage head passes through due to the elasticity of the salvage claw.
The embodiment also discloses a release salvaging method which is applicable to the releaser:
as shown in fig. 4, when the rod throwing type release is adopted, after the instrument string hung by the releaser reaches a target layer, the releasing ball bat assembly 1 is thrown into a wellhead, a fishing head of the releasing ball bat assembly is inserted into a fishing claw 3 of the releaser under the action of a pumping pressure, a sealing ball head is tightly attached to a bell mouth at the upper part of a limiting sleeve 4 of the releaser to form a seal, and at the moment, the space between the limiting sleeve and a hanging seat, the space between the hanging seat and a shaft is also sealed, and when the pressure difference in the shaft reaches a certain value, a shearing pin 9 is sheared by mud pressure to complete the release action;
after the construction operation is completed, the rotatable threaded ring disconnects the release therefrom, and the release bat assembly is removed for subsequent use.
When the ball throwing type release is adopted, after the instrument string hung by the releaser reaches a target layer, a releasing ball is thrown into a wellhead, as shown in fig. 5, when the releasing ball 18 falls into the releaser, the spherical surface is tightly attached to a bell mouth at the upper part of the limiting sleeve 4 of the releaser to form a seal, and at the moment, the space between the limiting sleeve and the hanging seat is also sealed, and when the pressure difference in the shaft reaches a certain value, the shearing pin is sheared by mud pressure to complete the release action;
when the drilling tool meets the blocking and needs to salvage the instrument string, the special salvage tool is used for grabbing the capturing head of the release ball bat assembly 1 and then lifting up, as shown in fig. 6, the conical surface of the lower surface of the salvage head of the release ball bat assembly is attached to the inner conical surface of the salvage claw 3 of the releaser, the two are moved upwards together, and when the outer conical surface of the upper part of the salvage claw is attached to the inner conical surface of the hanging joint 6 of the releaser, the salvage head is limited at the inner conical surface, so that the releaser and the hanging instrument string thereof are lifted up together until the wellhead is fished out.
Claims (5)
1. A pump-out type multifunctional releaser for logging, which is characterized in that: the device comprises a hanging seat, wherein a sealing ring is arranged on the outer wall of the hanging seat, a hanging joint is arranged in the hanging seat, a limiting sleeve is arranged on the upper portion of the hanging joint, a horn mouth is arranged on the upper portion of the limiting sleeve, a plurality of shearing pins and sealing rings are arranged between the limiting sleeve and the hanging seat, an elastic salvaging claw with an inner conical surface is arranged in the hanging joint, a mud circulation joint with a mud circulation hole is arranged on the lower portion of the hanging joint, and a landing joint is arranged on the lower portion of the mud circulation joint.
2. The pump-out type multifunctional releaser for logging according to claim 1, characterized in that: an inner conical surface is arranged in the suspension joint, and an outer conical surface corresponding to the inner conical surface is arranged at the upper part of the salvaging claw.
3. The pump-out type multifunctional releaser for logging according to claim 1, characterized in that: and a slit is arranged on the surface of the salvaging claw.
4. The pump-out type multifunctional releaser for logging according to claim 1, characterized in that: the lower part of the suspension joint is connected with the mud circulation joint through a threaded ring.
5. A release bat assembly dedicated to the pump-out logging multi-function release of claim 1, comprising: the fishing device comprises a capturing head, a rubber plug, a centralizer, a sealing ball head and a fishing head which are sequentially connected from top to bottom, wherein the sealing ball head can be tightly attached to a horn mouth on the upper part of a limiting sleeve to form a seal, and the lower surface of the fishing head is a conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321293169.1U CN219864914U (en) | 2023-05-25 | 2023-05-25 | Pump-out type multifunctional releaser for well logging and special release club assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321293169.1U CN219864914U (en) | 2023-05-25 | 2023-05-25 | Pump-out type multifunctional releaser for well logging and special release club assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219864914U true CN219864914U (en) | 2023-10-20 |
Family
ID=88346634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321293169.1U Active CN219864914U (en) | 2023-05-25 | 2023-05-25 | Pump-out type multifunctional releaser for well logging and special release club assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219864914U (en) |
-
2023
- 2023-05-25 CN CN202321293169.1U patent/CN219864914U/en active Active
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