CN219910731U - Oilfield fracturing combined manifold - Google Patents
Oilfield fracturing combined manifold Download PDFInfo
- Publication number
- CN219910731U CN219910731U CN202321116321.9U CN202321116321U CN219910731U CN 219910731 U CN219910731 U CN 219910731U CN 202321116321 U CN202321116321 U CN 202321116321U CN 219910731 U CN219910731 U CN 219910731U
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- Prior art keywords
- manifold
- pipeline
- fracturing
- pipe
- sleeve
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- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 18
- 239000010865 sewage Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012864 cross contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002637 fluid replacement therapy Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Joints Allowing Movement (AREA)
Abstract
An oilfield fracturing combination manifold relates to the technical field of oilfield fracturing. The front manifold is respectively connected with a plurality of fracturing pump outlet pipelines, the rear manifold is respectively connected with each well injection pipeline, the front manifold and the rear manifold are connected through an intermediate pipeline, a crossing pipeline is connected by each fracturing pump outlet pipeline, the crossing pipeline is respectively connected with the rear manifold, the front manifold is provided with a clean water pipeline and a sewage pipeline, and the pipelines are all provided with valves. The beneficial effects of the utility model are as follows: when the fracturing fluid is replaced, the inlet pipeline of the fracturing pump is switched to the crossing pipeline for continuous fracturing fluid injection, the valves of the clean water pipeline and the sewage pipeline are opened, the front collecting pipe is cleaned, the front collecting pipe is switched back after cleaning, the fracturing fluid is replaced alternately by each fracturing pump, namely, one fracturing pump stops replacing the fracturing fluid, the whole fracturing operation is not stopped, the distance and the direction between the upper flange pipe and the lower flange pipe are adjustable by rotating the telescopic joint, and the position and the size change of the high-pressure manifold during connection are adapted.
Description
Technical Field
The utility model relates to the technical field of oilfield fracturing, in particular to an oilfield fracturing combination manifold.
Background
When oil and natural gas fracturing sites and multiple wells simultaneously carry out fracturing operation, a plurality of fracturing pumps are used for injecting fracturing fluid into all underground strata through a high-pressure manifold, different fracturing fluids are needed to be injected into the strata in the fracturing operation process, when different fracturing fluids are switched, various fracturing fluids are alternately conveyed in the high-pressure manifold and cannot be cleaned, cross contamination is caused, when the fracturing fluids are connected with the high-pressure manifold, a plurality of requirements are met in position size, the installation and connection of the high-pressure movable joint adopted at the present stage are complex, the high-pressure movable joint is difficult to regulate, the safety level is low, the length of a pipeline cannot be adjusted in a telescopic mode, and the high-pressure movable joint is difficult to adapt to the position change when the high-pressure manifold is connected.
Disclosure of Invention
The utility model provides an oilfield fracturing combined manifold, which aims to solve the problem that the fracturing operation is discontinuous and is difficult to adapt to the position change when a high-pressure manifold is connected when the existing fracturing manifold is used for switching fracturing fluid.
The technical scheme provided by the utility model is as follows: the oil field fracturing combination manifold comprises a front manifold and a rear manifold, wherein the front manifold is respectively connected with a plurality of fracturing pump outlet pipelines, the rear manifold is respectively connected with well injection pipelines, the front manifold and the rear manifold are connected through intermediate pipelines, a crossing pipeline is connected by each fracturing pump outlet pipeline, the crossing pipeline is respectively connected with the rear manifold, a clear water pipeline and a sewage pipeline are arranged on the front manifold, and valves are arranged on the pipelines;
the rear ends of the injection pipelines of the wells are respectively connected with a rotary expansion joint, and the front ends of the outlet pipelines of the fracturing pumps are respectively connected with rotary expansion joints.
The rotary expansion joint comprises an upper flange pipe and a lower flange pipe which are arranged in parallel, wherein one side of the upper flange pipe and the lower flange pipe is a flange, the other side of the upper flange pipe is an elbow structure, an elbow of the upper flange pipe is connected with an inner sleeve, an elbow of the lower flange pipe is connected with an outer sleeve, the lower parts of the inner sleeve and the outer sleeve are connected through clearance fit of a sealing ring, the upper part of the outer sleeve is connected with a sliding sleeve through a bearing group, a gland, a spacer bush and a retaining ring, an inner hole of the sliding sleeve is provided with a spline hole, the spline hole of the sliding sleeve is in sliding connection with a spline shaft on the inner sleeve, the inner sleeve stretches into the lower end of the outer sleeve to extend for a stroke L, and the spline shaft of the inner sleeve extends for a stroke L at the lower end of the sliding sleeve.
The lower flange pipe is connected with the inner liner pipe through an inner hole thread at the lower part of the inner sleeve, the inner liner pipe is connected with the inner hole of the inner sleeve in a clearance fit manner, the inner hole of the inner liner pipe is identical with the inner hole of the lower flange pipe, the length of the inner liner pipe extending into the inner sleeve is larger than the stroke L, and the inner hole at the upper end of the inner liner pipe is provided with a bell mouth with gradually-enlarged diameter.
The lower end of the spline shaft of the inner sleeve is welded with a limiting ring, and the outer diameter of the limiting ring is larger than the outer diameter of the spline hole of the sliding sleeve.
The flanges on the upper flange pipe and the lower flange pipe are hoop flanges.
The front header, the rear header and the various lines are all integrated on a skid.
The beneficial effects of the utility model are as follows: when the fracturing fluid is replaced, the pipeline of the fracturing pump is switched to the crossing pipeline for continuous fracturing fluid injection, the valves of the clean water pipeline and the sewage pipeline are opened, the front collecting pipe is cleaned, the front collecting pipe is switched back after cleaning, each fracturing pump alternately carries out fracturing fluid replacement, namely, one fracturing pump stops replacing the fracturing fluid, the whole fracturing operation is not stopped, the rotary telescopic joint is arranged, the outer sleeve and the inner sleeve are sealed through the sealing ring, the outer sleeve is rotatable between the bearing group and the sliding sleeve, the sliding sleeve and the inner sleeve are mutually slidable through spline connection, the distance and the direction between the upper flange pipe and the lower flange pipe are adjustable, and the position and the size change when the high-pressure manifold is connected are adapted.
Drawings
FIG. 1 is a schematic flow chart of the present utility model;
FIG. 2 is a schematic view of the structure of the rotary telescopic joint according to the present utility model;
FIG. 3 is a diagram of the operation of the rotary telescopic joint of the present utility model.
In the figure: 1-front collecting pipe, 2-rear collecting pipe, 3-each well injection pipeline, 4-fracturing pump outlet pipeline, 5-crossing pipeline, 6-middle pipeline, 7-rotary telescopic joint, 8-clear water pipeline, 9-blow-down pipeline, 10-outer sleeve, 11-inner sleeve, 12-sliding sleeve, 13-spline shaft, 14-inner liner pipe, 15-limiting ring, 16-lower flange pipe, 17-upper flange pipe and 18-stroke L.
Detailed Description
As shown in fig. 1-3, an oilfield fracturing combination manifold comprises a front manifold 1 and a rear manifold 2, wherein the front manifold 1 is respectively connected with a plurality of fracturing pump outlet pipelines 4, the rear manifold 2 is respectively connected with well injection pipelines 3, the front manifold 1 and the rear manifold 2 are connected through intermediate pipelines 6, each fracturing pump outlet pipeline 4 is laterally connected with a crossing pipeline 5, the crossing pipelines 5 are respectively connected with the rear manifold 2, the front manifold 1 is provided with a clear water pipeline 8 and a sewage pipeline 9, valves are respectively arranged on the pipelines, and the manifolds and the pipelines form the oilfield fracturing manifold.
Through setting up preceding manifold 1, when changing the fracturing fluid, switch fracturing pump outlet line 4 to stride across pipeline 5 and continue the fracturing fluid injection, open clear water pipeline 8 and blow off pipeline 9's valve, wash preceding manifold 1, switch back preceding manifold 1 after wasing, each fracturing pump is carried out the fracturing fluid in turn and is changed, wherein one fracturing pump stops to change the fracturing fluid promptly, and whole fracturing operation does not stop.
The rear ends of the injection pipelines 3 of the wells are respectively connected with a rotary expansion joint 7, and the front ends of the outlet pipelines 4 of the fracturing pumps are respectively connected with rotary expansion joints 7.
The rotary telescopic joint 7 comprises an upper flange pipe 17 and a lower flange pipe 16, wherein the upper flange pipe 17 and the lower flange pipe 16 are arranged in parallel, the upper flange pipe 17 and the lower flange pipe 16 are of flange structures on one side and elbow structures on the other side, an elbow of the upper flange pipe 17 is connected with an inner sleeve 11, an elbow of the lower flange pipe 16 is connected with an outer sleeve 10, the inner sleeve 11 and the lower part of the outer sleeve 10 are connected through clearance fit of a sealing ring, the upper part of the outer sleeve 10 is connected with a sliding sleeve 12 through a bearing group, a gland, a spacer bush and a retaining ring, a spline hole is formed in an inner hole of the sliding sleeve 12, the spline hole of the sliding sleeve 12 is in sliding connection with a spline shaft 13 on the inner sleeve 11, the inner sleeve 11 stretches into the lower end of the outer sleeve 10 to extend for a stroke L18, and the spline shaft 13 of the inner sleeve 11 extends into the lower end of the sliding sleeve 12 for a stroke L18.
The outer sleeve 10 and the inner sleeve 11 are sealed by a sealing ring, the outer sleeve 10 can rotate through the bearing group and the sliding sleeve 12, the sliding sleeve 12 and the inner sleeve 11 can mutually slide through spline connection, so that the distance and the direction between the upper flange pipe 17 and the lower flange pipe 16 can be adjusted, and the position and the size change during high-pressure manifold connection can be adapted.
The inner hole of the lower flange pipe 16 at the lower part of the inner sleeve 11 is connected with the inner liner pipe 14 in a threaded manner, the inner liner pipe 14 is connected with the inner hole of the inner sleeve 11 in a clearance fit manner, the inner hole of the inner liner pipe 14 is identical to the inner hole of the lower flange pipe 16, the length of the inner liner pipe 14 extending into the inner sleeve 11 is larger than the stroke L18, a horn with gradually larger diameter is arranged at the inner hole at the upper end of the inner liner pipe 14, and the inner liner pipe 14 plays a role in smooth transition of fluid in the pipe.
The lower end of the spline shaft 13 of the inner sleeve 11 is welded with a limiting ring 15, and the outer diameter of the limiting ring 15 is larger than the outer diameter of the spline hole of the sliding sleeve 12.
The flanges on the upper flange pipe 17 and the lower flange pipe 16 are clamp flanges, and the clamp flanges have no direction limitation in connection, so that the adaptability of the manifold is further improved.
The front collecting pipe 1, the rear collecting pipe 2 and each pipeline are integrated on one pry, so that the integrated manufacturing and the whole carrying are convenient.
Claims (6)
1. The utility model provides an oil field fracturing combination manifold, including preceding manifold (1) and back manifold (2), its characterized in that, preceding manifold (1) is connected a plurality of fracturing pump outlet line (4) respectively, back manifold (2) are connected each well injection pipeline (3) respectively, connect through intermediate line (6) between preceding manifold (1) and the back manifold (2), every fracturing pump outlet line (4) bye has crossing pipeline (5), crossing pipeline (5) are connected back manifold (2) respectively, be equipped with clear water pipeline (8) and blow off pipeline (9) on preceding manifold (1), all be equipped with the valve on the pipeline;
the rear ends of the injection pipelines (3) of the wells are respectively connected with a rotary expansion joint (7), and the front ends of the outlet pipelines (4) of the fracturing pumps are respectively connected with the rotary expansion joints (7).
2. The oilfield fracturing combination manifold of claim 1, wherein: the rotary telescopic joint (7) comprises an upper flange pipe (17) and a lower flange pipe (16), wherein the upper flange pipe (17) and the lower flange pipe (16) are arranged in parallel, the upper flange pipe (17) and the lower flange pipe (16) are of a flange structure on one side and an elbow structure on the other side, an elbow of the upper flange pipe (17) is connected with an inner sleeve (11), an elbow of the lower flange pipe (16) is connected with an outer sleeve (10), the inner sleeve (11) is connected with the lower part of the outer sleeve (10) through clearance fit of a sealing ring, the upper part of the outer sleeve (10) is connected with a sliding sleeve (12) through a bearing group, a gland, a spacer bush and a retainer ring, a spline hole is machined in an inner hole of the sliding sleeve (12), the spline hole of the sliding sleeve (12) is in sliding connection with a spline shaft (13) on the inner sleeve (11), the inner sleeve (11) extends into the lower end of the outer sleeve (10) to extend a stroke L (18), and the spline shaft (13) of the inner sleeve (11) extends to the lower end of the sliding sleeve (12) to form a stroke L (18).
3. An oilfield fracturing combination manifold according to claim 2, wherein: the lower flange pipe (16) is connected with the inner liner pipe (14) through an inner hole thread at the lower part of the inner sleeve (11), the inner liner pipe (14) is connected with the inner hole of the inner sleeve (11) in a clearance fit manner, the inner hole of the inner liner pipe (14) is identical to the inner hole of the lower flange pipe (16), the length of the inner liner pipe (14) extending into the inner sleeve (11) is larger than the stroke L (18), and a horn mouth with the diameter gradually larger is formed in the inner hole at the upper end of the inner liner pipe (14).
4. An oilfield fracturing combination manifold according to claim 2, wherein: the lower end of the spline shaft (13) of the inner sleeve (11) is welded with a limiting ring (15), and the outer diameter of the limiting ring (15) is larger than the outer diameter of the spline hole of the sliding sleeve (12).
5. An oilfield fracturing combination manifold according to claim 2, wherein: the flanges on the upper flange pipe (17) and the lower flange pipe (16) are hoop flanges.
6. The oilfield fracturing combination manifold of claim 1, wherein: the front collecting pipe (1), the rear collecting pipe (2) and each pipeline are integrated on one pry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321116321.9U CN219910731U (en) | 2023-05-11 | 2023-05-11 | Oilfield fracturing combined manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321116321.9U CN219910731U (en) | 2023-05-11 | 2023-05-11 | Oilfield fracturing combined manifold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219910731U true CN219910731U (en) | 2023-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321116321.9U Active CN219910731U (en) | 2023-05-11 | 2023-05-11 | Oilfield fracturing combined manifold |
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| Country | Link |
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| CN (1) | CN219910731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117536601A (en) * | 2023-12-13 | 2024-02-09 | 江苏宏泰石化机械有限公司 | Ultrahigh-pressure large-drift-diameter fracturing manifold pry |
-
2023
- 2023-05-11 CN CN202321116321.9U patent/CN219910731U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117536601A (en) * | 2023-12-13 | 2024-02-09 | 江苏宏泰石化机械有限公司 | Ultrahigh-pressure large-drift-diameter fracturing manifold pry |
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