CN220248032U - Shunt manifold for pressure-controlled drilling - Google Patents
Shunt manifold for pressure-controlled drilling Download PDFInfo
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- CN220248032U CN220248032U CN202321939868.9U CN202321939868U CN220248032U CN 220248032 U CN220248032 U CN 220248032U CN 202321939868 U CN202321939868 U CN 202321939868U CN 220248032 U CN220248032 U CN 220248032U
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- 238000005553 drilling Methods 0.000 title claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 105
- 239000002002 slurry Substances 0.000 claims abstract description 27
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a shunt manifold for pressure-controlled drilling, which solves the technical problems of large occupied area, high use cost and high maintenance cost of a set return pressure pump. The device comprises a conveying pipe, wherein one end of the conveying pipe is connected with the output end of an external slurry pump, and the other end of the conveying pipe is connected with a high-pressure hose of an external drill rod; the control valve is arranged on the conveying pipe; one end of the liquid inlet pipe is connected with the conveying pipe, the other end of the liquid inlet pipe is connected with an external pressure control drilling ground manifold, and a first control valve is arranged on the liquid inlet pipe; the port of the liquid inlet pipe is positioned between the control valve and the external slurry pump, and when the control valve is closed and the first control valve is opened, liquid medium conveyed by the external slurry pump can enter the external pressure control drilling ground manifold through the liquid inlet pipe so as to ensure that ground back pressure is stable. The utility model can save the occupied area, reduce the maintenance cost and the use cost, reduce the risk of damaging the slurry pump and improve the operation convenience.
Description
Technical Field
The utility model belongs to the technical field of drilling, and particularly relates to a shunt manifold for pressure-controlled drilling.
Background
The pressure-controlled drilling is a self-adaptive drilling process for accurately controlling the annular pressure profile in the whole borehole, so that the density of drilling fluid is lower than that of conventional drilling fluid, the control of the bottom hole or the annular pressure profile is realized by adjusting ground back pressure in the drilling process, the bottom hole pressure is always slightly higher than the stratum pressure, and real-time adjustment is performed as required, thereby achieving the purposes of reducing well control risk, reducing non-production time, improving drilling efficiency and solving the stratum drilling problem of a narrow-density window.
Currently, in drilling equipment, a high pressure hose on the drill pipe is connected to a mud pump via a delivery pipe so that the mud pump can provide the drill pipe with a liquid medium. In the implementation process of the existing pressure control drilling operation, a special back pressure pump is required to be equipped, when a drill rod stand column is connected, the back pressure pump is required to be started while a slurry pump is stopped, and continuous liquid flow is provided for a pressure control drilling throttle valve so as to ensure that ground back pressure is stable when the drill rod stand column is connected. And after the pressure control drilling operation is finished, the mud pump is started while the return pressure pump is closed.
However, the back pressure pump is usually a well pump or a high pressure plunger pump with equivalent performance, and has large size, requires an external power supply or a power source such as a diesel engine, and has the problems of large occupied area, high maintenance cost and high energy consumption. Meanwhile, in the drilling operation process, the slurry pump needs to be frequently controlled to be started and stopped, so that the risk of damage of the slurry pump exists, the operation convenience is affected, and the improvement is needed.
Disclosure of Invention
In order to solve all or part of the problems, the utility model aims to provide a shunt manifold for pressure control drilling, which can save the occupied area, reduce the maintenance cost and the use cost, reduce the risk of damaging a slurry pump and improve the operation convenience.
The utility model provides a shunt manifold for pressure-controlled drilling, which comprises:
one end of the conveying pipe is connected with the output end of the external slurry pump, and the other end of the conveying pipe is connected with a high-pressure hose of the external drill rod;
the control valve is arranged on the conveying pipe;
one end of the liquid inlet pipe is connected with the conveying pipe, the other end of the liquid inlet pipe is connected with an external pressure control drilling ground manifold, and a first control valve is arranged on the liquid inlet pipe;
the port of the liquid inlet pipe is positioned between the control valve and the external slurry pump, and when the control valve is closed and the first control valve is opened, liquid medium conveyed by the external slurry pump can enter the external pressure control drilling ground manifold through the liquid inlet pipe so as to ensure that ground back pressure is stable.
Optionally, one end of the liquid inlet pipe, which is close to the external pressure control drilling surface manifold, is provided with a one-way valve, and the one-way valve is used for preventing liquid medium in the external pressure control drilling surface manifold from flowing back into the liquid inlet pipe.
Optionally, the shunt manifold further comprises:
and one end of the liquid return pipe is connected with the liquid inlet pipe, the other end of the liquid return pipe is connected with the conveying pipe, the control valve is positioned between the liquid inlet pipe and the port of the liquid return pipe, and a second control valve is arranged on the liquid return pipe.
Optionally, the shunt manifold further comprises:
the third control valve is arranged on the liquid return pipe;
one end of the protection pipe is connected with the liquid inlet pipe, the other end of the protection pipe is connected with the liquid return pipe, and a throttle valve and a fourth control valve are arranged on the protection pipe;
one side port of the protection pipe is positioned between the first control valve and the one-way valve, and the other side port of the protection pipe is positioned between the second control valve and the third control valve;
when the first control valve is closed, the liquid medium flows through the third control valve and then is split, one part of the liquid medium flows back to the conveying pipe through the second control valve, and the other part of the liquid medium flows through the throttle valve, the fourth control valve and the one-way valve in sequence and enters the external pressure control drilling surface manifold.
Optionally, a pressure release pipe is connected to the protection pipe, a port of the pressure release pipe is located between the throttle valve and the fourth control valve, and a fifth control valve is arranged on the pressure release pipe, when the third control valve and the fourth control valve are closed, a liquid medium in the external drill rod enters the pressure release pipe through the liquid return pipe, so that pressure release operation of the external drill rod is realized.
Optionally, a pressure gauge is arranged on the protection tube.
Optionally, the first control valve, the second control valve, the third control valve, the fourth control valve and the fifth control valve are respectively electrically controlled gate valves.
Optionally, the ends of the liquid inlet pipe and the pressure relief pipe are respectively provided with a connecting flange.
According to the technical scheme, the shunt manifold for pressure control drilling provided by the utility model has the following advantages:
the device utilizes the cooperation of outside slush pump and feed liquor pipe can realize the back pressure pump to outside accuse pressure well drilling ground manifold carry liquid medium's ability, and this design only needs to add several pipelines and several valves additionally on drilling equipment, can realize the function of back pressure pump, compares to increase the back pressure pump, not only saves area, can also reduce use cost and maintenance cost. Meanwhile, the design ensures that the external slurry pump does not need to be frequently started and closed, thereby improving the operation convenience and reducing the damage risk of the slurry pump.
Additional features and advantages of the utility model will be set forth in the description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and do not limit the utility model.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;
FIG. 2 is a schematic diagram illustrating a state of the manifold when performing step S1 according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram illustrating a state of the manifold when performing the step S2 according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram illustrating a state of the manifold when the step S3 is performed according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram illustrating a drilling mode according to an embodiment of the present utility model;
fig. 6 is a schematic diagram illustrating a state of a drill pipe pressure release mode according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a delivery tube; 2. a control valve; 3. a liquid inlet pipe; 4. a first control valve; 5. a one-way valve; 6. a liquid return pipe; 7. a second control valve; 8. a protective tube; 9. a third control valve; 10. a throttle valve; 11. a fourth control valve; 12. a pressure relief tube; 13. a fifth control valve; 14. a pressure gauge; 15. and (5) connecting the flanges.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be arbitrarily combined with each other.
Referring to fig. 1, 2, 3, 4, 5 and 6, an embodiment of the present utility model is disclosed, in which a shunt manifold for pressure-controlled drilling is disclosed, and the shunt manifold includes a delivery pipe 1, one end (right end in fig. 1) of the delivery pipe 1 is connected to an output end of an external mud pump, and the other end (left end in fig. 1) is connected to a high-pressure hose of an external drill pipe, so that the external mud pump can deliver a liquid medium to the external drill pipe. Meanwhile, a control valve 2 is arranged on the conveying pipe 1 to control the opening and closing of the conveying pipe 1.
In one embodiment, as shown in fig. 1, the shunt manifold further comprises a liquid inlet pipe 3, one end of the liquid inlet pipe 3 is connected with the conveying pipe 1, the other end of the liquid inlet pipe is connected with an external pressure control drilling surface manifold, and a first control valve 4 is arranged on the liquid inlet pipe 3 to control the opening and closing of the liquid inlet pipe 3.
In one embodiment, as shown in fig. 1, the port of the liquid inlet pipe 3 is located between the control valve 2 and the external slurry pump, and when the control valve 2 is closed and the first control valve 4 is opened, the liquid medium conveyed by the external slurry pump can enter the external pressure-controlled drilling surface manifold through the liquid inlet pipe 3, so as to ensure the surface back pressure to be stable.
The shunt manifold for pressure control drilling in the embodiment can realize the capacity of the back pressure pump for conveying liquid medium to the external pressure control drilling ground manifold by utilizing the cooperation of the external slurry pump and the liquid inlet pipe 3. The design can realize the function of the back pressure pump by additionally arranging a plurality of pipelines and a plurality of valves on the drilling device, and compared with the case of adding the back pressure pump, the back pressure pump not only saves the occupied area, but also reduces the use cost and the maintenance cost. Meanwhile, the design ensures that the external slurry pump does not need to be frequently started and closed, thereby improving the operation convenience and reducing the damage risk of the slurry pump.
In one embodiment, as shown in fig. 1, one end of the liquid inlet pipe 3, which is close to the external pressure control drilling surface manifold, is provided with a one-way valve 5, and the one-way valve 5 is used for preventing liquid medium in the external pressure control drilling surface manifold from flowing back into the liquid inlet pipe 3, so as to ensure that the ground back pressure is stable.
In one embodiment, as shown in fig. 1, the manifold further includes a liquid return pipe 6, one end of the liquid return pipe 6 is connected with the liquid inlet pipe 3, the other end is connected with the conveying pipe 1, the control valve 2 is located between the liquid inlet pipe 3 and a port of the liquid return pipe 6, and a second control valve 7 is disposed on the liquid return pipe 6.
In one embodiment, as shown in fig. 1, the shunt manifold further comprises a protection tube 8, wherein one end of the protection tube 8 is connected with the liquid inlet tube 3, and the other end is connected with the liquid return tube 6. The liquid return pipe 6 is provided with a third control valve 9, the protection pipe 8 is provided with a throttle valve 10 and a fourth control valve 11, one side port of the protection pipe 8 is positioned between the first control valve 4 and the one-way valve 5, and the other side port is positioned between the second control valve 7 and the third control valve 9.
In one embodiment, as shown in fig. 1, a pressure relief pipe 12 is connected to the protection pipe 8, a port of the pressure relief pipe 12 is located between the throttle valve 10 and the fourth control valve 11, and a fifth control valve 13 is provided on the pressure relief pipe 12. When the third control valve 9 and the fourth control valve 11 are closed, the liquid medium in the outer drill rod enters the pressure relief pipe 12 through the liquid return pipe 6, so that the pressure relief operation of the outer drill rod is realized.
In one embodiment, as shown in fig. 1, 2, 3, and 4, the manifold operates as follows when connecting drill pipe strings:
(S1) closing the pilot valve 2, the first control valve 4, and the fifth control valve 13, and opening the second control valve 7, the third control valve 9, the fourth control valve 11, and the throttle valve 10.
As shown in fig. 2, the liquid medium conveyed by the external slurry pump enters the liquid return pipe 6 through the liquid inlet pipe 3, flows through the third control valve 9 and is split, one part of the liquid medium flows through the second control valve 7 and flows back to the conveying pipe 1, and the other part of the liquid medium sequentially flows through the throttle valve 10, the fourth control valve 11 and the one-way valve 5 and enters the external pressure control drilling surface manifold so as to achieve the effect of balancing pressure.
(S2) slowly closing the second control valve 7, the third control valve 9, the fourth control valve 11, and the throttle valve 10, and slowly opening the first control valve 4.
As shown in fig. 3, the liquid medium conveyed by the external slurry pump enters the external pressure-controlled drilling surface manifold through the liquid inlet pipe 3 so as to ensure the surface back pressure to be stable.
(S3) opening the second control valve 7, the throttle valve 10, and the fifth control valve 13.
As shown in fig. 4, the liquid medium in the outer drill rod enters the protection pipe 8 through the liquid return pipe 6 and is discharged through the pressure release pipe 12, so that the pressure release operation of the outer drill rod is realized.
After the pressure of the external pressure control drilling surface manifold and the pressure of the liquid inlet pipe 3 are balanced, the first control valve 4 is opened, so that the risk of damage to the first control valve 4 caused by sudden impact of a liquid medium on the first control valve 4 is reduced, and the service life of the shunt manifold is prolonged. Meanwhile, the design enables pressure control drilling operation and pressure release operation of an external drill rod to be carried out simultaneously, and the pressure control drilling operation and the pressure release operation of the external drill rod are not interfered with each other, so that working timeliness is improved.
In one embodiment, as shown in fig. 1, 3, 5 and 6, the manifold is provided with a plurality of modes for switching, and the specific modes are as follows:
(1) Mode one: drilling mode
As shown in fig. 1 and 3, the first control valve 4, the second control valve 7, and the third control valve 9 are opened, and the fourth control valve 11, the fifth control valve 13, and the throttle valve 10 are closed. At this time, the liquid medium conveyed by the external slurry pump enters the liquid return pipe 6 through the liquid inlet pipe 3, flows back to the conveying pipe 1, and then enters the high-pressure hose of the external drill pipe.
(2) Mode two: drill rod pressure release mode
As shown in fig. 1 and 5, the first control valve 4, the second control valve 7, the fifth control valve 13, and the throttle valve 10 are opened, and the third control valve 9 and the fourth control valve 11 are closed. At this time, the liquid medium in the outer drill rod enters the protection pipe 8 through the liquid return pipe 6 and is discharged through the pressure relief pipe 12, so that the pressure relief operation of the outer drill rod is realized.
(3) Mode three: vertical column mode for connecting drill rod
As shown in fig. 1 and 6, the first control valve 4 is opened, and the second control valve 7, the third control valve 9, the fourth control valve 11, the fifth control valve 13, and the throttle valve 10 are closed. At this time, the liquid medium conveyed by the external slurry pump directly enters the external pressure control drilling ground manifold through the liquid inlet pipe 3 so as to ensure the ground back pressure to be stable.
In one embodiment, as shown in fig. 1, a pressure gauge 14 is provided on the protection pipe 8, and a throttle valve 10 is located between the pressure gauge 14 and the fourth control valve 11 to enable monitoring of the pressure of the liquid medium in the shunt manifold.
In one embodiment, as shown in fig. 1, the first control valve 4, the second control valve 7, the third control valve 9, the fourth control valve 11 and the fifth control valve 13 respectively adopt an electric control gate valve, and after being connected with an external PLC control system, the shunt manifold switching mode can be remotely controlled.
In one embodiment, as shown in fig. 1, the ends of the liquid inlet pipe 3 and the pressure relief pipe 12 are respectively provided with a connecting flange 15, so that the liquid inlet pipe 3 and the pressure relief pipe 12 can be conveniently and quickly connected with an external pressure control drilling surface manifold and an external pressure relief pipe 12 network.
According to the device, the functions of the back pressure pump can be realized only by additionally arranging a plurality of pipelines and a plurality of valves on the drilling device, and compared with the case of adding the back pressure pump, the device not only saves the occupied area, but also reduces the use cost and the maintenance cost. Meanwhile, the design ensures that the external slurry pump does not need to be frequently started and closed, thereby improving the operation convenience and reducing the damage risk of the slurry pump.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (8)
1. A shunt manifold for pressure controlled drilling comprising:
one end of the conveying pipe (1) is connected with the output end of the external slurry pump, and the other end of the conveying pipe is connected with a high-pressure hose of the external drill rod;
the control valve (2) is arranged on the conveying pipe (1);
one end of the liquid inlet pipe (3) is connected with the conveying pipe (1), the other end of the liquid inlet pipe is connected with an external pressure control drilling ground manifold, and a first control valve (4) is arranged on the liquid inlet pipe (3);
the port of the liquid inlet pipe (3) is positioned between the control valve (2) and the external slurry pump, and when the control valve (2) is closed and the first control valve (4) is opened, liquid medium conveyed by the external slurry pump can enter the external pressure control drilling ground manifold through the liquid inlet pipe (3) so as to ensure that ground back pressure is stable.
2. The shunt manifold for pressure-controlled drilling according to claim 1, wherein a one-way valve (5) is arranged at one end of the liquid inlet pipe (3) close to the external pressure-controlled drilling surface manifold, and the one-way valve (5) is used for preventing liquid medium in the external pressure-controlled drilling surface manifold from flowing back into the liquid inlet pipe (3).
3. The shunt manifold for pressure controlled drilling of claim 2, further comprising:
and one end of the liquid return pipe (6) is connected with the liquid inlet pipe (3), the other end of the liquid return pipe is connected with the conveying pipe (1), the control valve (2) is positioned between the liquid inlet pipe (3) and a port of the liquid return pipe (6), and a second control valve (7) is arranged on the liquid return pipe (6).
4. A shunt manifold for pressure controlled drilling according to claim 3, further comprising:
a third control valve (9) arranged on the liquid return pipe (6);
a protection pipe (8), one end of which is connected with the liquid inlet pipe (3) and the other end of which is connected with the liquid return pipe (6), wherein a throttle valve (10) and a fourth control valve (11) are arranged on the protection pipe (8);
one side port of the protection pipe (8) is positioned between the first control valve (4) and the one-way valve (5), and the other side port of the protection pipe is positioned between the second control valve (7) and the third control valve (9);
when the first control valve (4) is closed, the liquid medium flows through the third control valve (9) and then is split, one part of the liquid medium flows back to the conveying pipe (1) through the second control valve (7), and the other part of the liquid medium flows through the throttle valve (10), the fourth control valve (11) and the one-way valve (5) in sequence and enters an external pressure control drilling surface manifold.
5. The shunt manifold for pressure-controlled drilling according to claim 4, wherein the protection pipe (8) is connected with a pressure relief pipe (12), a port of the pressure relief pipe (12) is located between the throttle valve (10) and the fourth control valve (11), a fifth control valve (13) is arranged on the pressure relief pipe (12), and when the third control valve (9) and the fourth control valve (11) are closed, a liquid medium in an external drill rod enters the pressure relief pipe (12) through the liquid return pipe (6) so as to realize pressure relief operation of the external drill rod.
6. Shunt manifold for pressure controlled drilling according to claim 4, characterized in that the protection tube (8) is provided with a pressure gauge (14).
7. The shunt manifold for pressure controlled drilling according to claim 5, wherein the first control valve (4), the second control valve (7), the third control valve (9), the fourth control valve (11) and the fifth control valve (13) are respectively electrically controlled gate valves.
8. The shunt manifold for pressure controlled drilling according to claim 5, wherein the ends of the liquid inlet pipe (3) and the pressure relief pipe (12) are respectively provided with a connecting flange (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321939868.9U CN220248032U (en) | 2023-07-21 | 2023-07-21 | Shunt manifold for pressure-controlled drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321939868.9U CN220248032U (en) | 2023-07-21 | 2023-07-21 | Shunt manifold for pressure-controlled drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248032U true CN220248032U (en) | 2023-12-26 |
Family
ID=89263817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321939868.9U Active CN220248032U (en) | 2023-07-21 | 2023-07-21 | Shunt manifold for pressure-controlled drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248032U (en) |
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2023
- 2023-07-21 CN CN202321939868.9U patent/CN220248032U/en active Active
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