CN115584945A - Fracturing wellhead quick connection device and method - Google Patents
Fracturing wellhead quick connection device and method Download PDFInfo
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- CN115584945A CN115584945A CN202110762414.8A CN202110762414A CN115584945A CN 115584945 A CN115584945 A CN 115584945A CN 202110762414 A CN202110762414 A CN 202110762414A CN 115584945 A CN115584945 A CN 115584945A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 36
- 238000002347 injection Methods 0.000 claims description 29
- 239000007924 injection Substances 0.000 claims description 29
- 238000012360 testing method Methods 0.000 claims description 11
- 210000000664 rectum Anatomy 0.000 claims description 6
- 238000003780 insertion Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
- E21B33/047—Casing heads; Suspending casings or tubings in well heads for plural tubing strings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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Abstract
The invention provides a fracturing wellhead quick connection device and a fracturing wellhead quick connection method. The invention realizes the quick connection of the large-drift-diameter high-pressure pipeline between the fracturing well heads of the cluster well site, simplifies the pipeline connection of the fracturing and acidizing operation sites, and quickly and efficiently finishes the fracturing construction of the cluster well.
Description
Technical Field
The invention relates to the technical field of oil and gas well fracturing and acidizing construction, in particular to a fracturing wellhead quick connection device and method.
Background
Along with the gradual expansion of the development scale of oil and gas fields, the fracturing construction of large cluster well sites is gradually increased, and in the fracturing operation process of the cluster wells, due to the limitation of operation well sites and the requirement of the construction scale, a plurality of fracturing pipelines with the size of 3 inches or 4 inches are required to be connected in parallel to meet the requirement of field operation. The requirement of multi-well connection on a high-pressure manifold is large, the connection is complex, the occupied area is large, and personnel are easy to operate by adopting a mode of switching a high-pressure cock and a shunt manifold. Meanwhile, the complicated pipeline arrangement slows down the construction period, and brings more pipeline leakage risks.
Disclosure of Invention
In order to solve the problems that the existing cluster well site fracturing construction well head connecting mode is complex, multiple pipeline connecting points are provided, the workload is large, and the operation difficulty of a plurality of valves for controlling the injection process is large, the invention provides a fracturing well head quick connecting device and a fracturing well head quick connecting method, the invention simplifies the high-pressure pipeline connecting mode of the cluster well fracturing site, reduces a large amount of pipeline connecting workloads of a well head and a high-pressure area, and obviously improves the construction efficiency and the safety; meanwhile, the on-site fracturing injection process is clear at a glance.
The technical scheme of the invention is as follows:
the utility model provides a fracturing well head quick connecting device, includes well head connector, big latus rectum high-pressure line, high-pressure tee bend, cross and base, big latus rectum high-pressure line one end be connected with high-pressure tee bend, the other end is connected with the well head connector, high-pressure tee bend and cross are connected, the equal fixed connection of high-pressure tee bend and cross is on the base.
The large-drift-diameter high-pressure pipeline is formed by sequentially connecting a plurality of high-pressure pipelines, and two adjacent high-pressure pipelines are connected through a high-pressure rotating part; the lengths of the high-pressure pipelines are different, and the connection angles of the two adjacent high-pressure pipelines are random.
The high-pressure rotating part is a movable part for bearing high pressure, and the high pressure is not more than 105MPa.
The high-pressure rotating part is a movable elbow.
The base is a movable base.
The four-way joint is internally provided with three plugs.
The large-drift-diameter high-pressure pipeline is connected with the high-pressure tee through the high-pressure rotating part.
A quick connection method of a fracturing wellhead quick connection device comprises the following specific steps:
firstly, a movable base is placed at a proper position according to the number and the position of fracturing and acidizing well mouths as required;
step two, according to the well site space, the fracturing unit is parked behind the base or on the left side and the right side of the base, a high-pressure discharge end of the fracturing truck is connected with one inlet of a four-way joint above the base through a high-pressure pipeline, and the unconnected inlet is blocked by a plug;
lifting the whole large-drift-diameter high-pressure pipeline by using a crane, moving a wellhead connector to the upper part of a wellhead, and quickly connecting the wellhead connector with a wellhead fracturing injection port;
step four, emptying the fracturing pump truck, closing a well head gate, and testing the pressure of the whole high-pressure injection pipeline;
step five, opening a well mouth gate after the integral pressure test is qualified, and starting fracturing and acidizing construction;
and step six, after the construction is finished, closing the gate of the well mouth, disassembling the connector of the well mouth after pressure relief, lifting the whole large-drift-diameter high-pressure pipeline, and directly moving the whole large-drift-diameter high-pressure pipeline to the next well mouth of the well to be fractured and acidified to connect.
And sixthly, when the well is moved to the next well, if the distance between the well mouth of the well and the base exceeds the maximum rotation radius of the corresponding large-drift-diameter high-pressure pipeline, the whole base needs to be moved, and the well mouth fracturing injection port of the well is ensured to be connected with the corresponding well mouth connector.
The invention has the beneficial effects that:
the invention can realize the quick connection between the well mouth and the injection high-pressure pipeline in the fracturing and acidizing construction operation of the cluster well site. The large-drift-diameter high-pressure pipeline can move universally, and the movable base at the bottom of the large-drift-diameter high-pressure pipeline can move and can be adjusted in position in a well site.
The fracturing wellhead quick connecting device simplifies the high-pressure pipeline connecting mode of a cluster well fracturing site, reduces a large amount of wellhead and high-pressure area pipeline connecting workloads, and obviously improves the construction efficiency and the safety. Meanwhile, the on-site fracturing injection process is clear at a glance.
The following will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic front view of the present invention.
FIG. 3 is a schematic view of the present invention in its application.
In the figures, the reference numbers are: 1. a wellhead connector; 2. a large-bore high-pressure pipeline; 3. a high pressure rotating member; 4. a high-pressure tee; 5. four-way connection; 6. a base; 7. a plug; 8. a wellhead quick-insertion base; 9. a logging string and a blowout preventer; 10. a high pressure line; 11. a fracturing truck set; 12. a wellhead valve; 13. and (3) a remote control system.
Detailed Description
Example 1:
in order to solve the problems that the existing cluster well site fracturing construction well head connecting mode is complex, multiple pipeline connecting points are provided, the workload is large, and the operation difficulty of a plurality of valves for controlling the injection process is large, the invention provides the fracturing well head quick connecting device and the method shown in the figures 1 and 2, the invention simplifies the high-pressure pipeline connecting mode of the cluster well fracturing site, reduces a large amount of pipeline connecting workloads of a well head and a high-pressure area, and obviously improves the construction efficiency and the safety; meanwhile, the on-site fracturing injection process is clear at a glance.
The utility model provides a fracturing well head quick connecting device, includes well head connector 1, big latus rectum high-pressure line 2, high-pressure tee bend 4, cross 5 and base 6, 2 one end of big latus rectum high-pressure line be connected with high-pressure tee bend 4, the other end is connected with well head connector 1, high-pressure tee bend 4 is connected with cross 5, high-pressure tee bend 4 and the equal fixed connection of cross 5 are on base 6.
In the invention, as shown in figure 1, the bottom end of a large-diameter high-pressure pipeline 2 is connected with a tee joint 4 on a base 6, the upper end of the large-diameter high-pressure pipeline 2 is connected with a wellhead connector 1, and the wellhead connector 1 is inserted into a wellhead during operation. The large-drift-diameter high-pressure pipeline 2 can rotate universally, and can reach well mouths in all directions within the radius range of the large-drift-diameter high-pressure pipeline 2 by adjusting the direction of the large-drift-diameter high-pressure pipeline 2, so that subsequent construction can be carried out.
The whole large-drift-diameter universal movable injection pipeline (the large-drift-diameter high-pressure pipeline 2) can be matched with a pipeline lifting device to lift and be quickly connected with a wellhead. The pipeline lifting device is at least a crane, a suspension arm or a hydraulic mechanical arm. The large-drift-diameter high-pressure pipeline 2 can be ensured to quickly and accurately reach an inlet to be connected. The invention realizes the quick connection of the large-drift-diameter single-channel fracturing pipeline (the large-drift-diameter high-pressure pipeline 2) among the fracturing well heads of the cluster well site, simplifies the pipeline connection of the fracturing and acidizing operation sites, and quickly and efficiently finishes the fracturing construction of the cluster well.
Example 2:
based on embodiment 1, in this embodiment, preferably, the high-pressure rotating component 3 is a movable component that can bear high pressure, and the high pressure does not exceed 105MPa.
Preferably, the high-pressure rotating part 3 is a movable elbow.
As shown in figure 2, a large-diameter high-pressure pipeline 2 and a high-pressure rotating part 3 are connected above a high-pressure tee joint 4, universal rotation and extension of the high-pressure pipeline are achieved, and the high-pressure pipeline can be connected with a wellhead in each direction and position in a quick alignment mode. The high-pressure rotating part 3 is a high-pressure bearing movable part, and includes, but is not limited to, high-pressure movable elbows with various dimensions, high-pressure rotating flanges and a combination mode thereof. The uppermost large-diameter high-pressure pipeline 2 is connected with a wellhead connector 1 in a connecting mode including but not limited to a union mode, a flange mode and an insertion locking mode.
The shape of the high-pressure rotating part 3 may be a connector of other structure as long as the connection seal is ensured and the high-pressure rotating part has a rotatable function. Can be in the shape of a right angle, an arc and a rectangle. The high-pressure pipeline, the high-pressure flange and other high-pressure components related to the invention are all the prior art, and the high pressure range is 0-105MPa.
Preferably, the base 6 is a movable base.
In the invention, the movable base can be a skid-mounted integrated base, and can also be designed in a vehicle-mounted type or a pulling type, so that the movable base is convenient to move in a well site and among well sites.
Preferably, the large-diameter high-pressure pipeline 2 is formed by sequentially connecting a plurality of high-pressure pipelines, and two adjacent high-pressure pipelines are connected through a high-pressure rotating component 3; the length of each high-pressure pipeline is different, and the connection angle of two adjacent high-pressure pipelines is random.
And the length of the high-pressure pipeline in the large-drift-diameter high-pressure pipeline 2 is adjusted according to the position of a wellhead. The large-bore high-pressure pipeline 2 integrally rotates along the connection point of the large-bore high-pressure pipeline 2 and the base 6.
The drift diameter of the large-drift-diameter high-pressure pipeline 2 is at least 4 inches. The high pressure conduit path of the present invention includes, but is not limited to, 4 inches, 5 inches, and 7 inches. Through the quantity or the length of increasing high pressure pipeline and the high pressure rotary part 3 of corresponding connection, fold many times and put the back, realize the high-speed joint of farther distance well head. The whole large-drift-diameter universal movable large-drift-diameter high-pressure pipeline 2 can be matched with a crane to lift and is quickly connected with a wellhead, and a lifting alignment mode of a suspension arm and a hydraulic mechanical arm is also included.
The length of the large-drift-diameter high-pressure pipeline 2 can be adjusted, and injection flow switching can be carried out on fracturing and acidizing construction well heads of 3 or more wells. The high-pressure injection pipeline is connected through a plurality of pipelines or is combined with the high-pressure rotating component for multiple folding, and the length of the high-pressure injection pipeline can be adjusted according to the on-site distance in use.
Preferably, three plugs 7 are arranged in the four-way joint 5.
In the invention, the four-way joint 5 is provided with three plugs 7, so that the on-site fracturing injection pipeline can be conveniently connected from all directions.
Preferably, the large-diameter high-pressure pipeline 2 is connected with the high-pressure tee 4 through the high-pressure rotating component 3.
A fracturing wellhead quick connection method comprises the following specific steps:
firstly, placing a movable base 6 to a proper position according to the number and the position of fracturing and acidizing well mouths as required;
step two, according to the well site space, the fracturing unit is parked behind or on the left side and the right side of the base 6, a high-pressure discharge end of the fracturing truck is connected with one inlet of a four-way joint 5 above the base 6 through a high-pressure pipeline, and the unconnected inlet is plugged by a plug 7;
lifting the whole large-drift-diameter high-pressure pipeline 2 by using a crane, moving the wellhead connector 1 to the position above a wellhead, and quickly connecting the wellhead connector with a wellhead fracturing injection port;
step four, emptying the fracturing pump truck, closing a well head gate, and testing the pressure of the whole high-pressure injection pipeline;
step five, opening a well mouth gate after the integral pressure test is qualified, and starting fracturing and acidizing construction;
and step six, after the construction is finished, closing the gate of the well mouth, disassembling the connector 1 of the well mouth after pressure relief, lifting the whole large-drift-diameter high-pressure pipeline 2, and directly moving the whole large-drift-diameter high-pressure pipeline 2 to the next well mouth to be fractured and acidified to connect.
Preferably, in the sixth step, when moving to the next well, if the distance between the wellhead of the well and the base 6 exceeds the maximum rotation radius of the corresponding large-drift-diameter high-pressure pipeline 2, the whole base 6 needs to be moved, so as to ensure that the wellhead fracturing injection port of the well is connected with the corresponding wellhead connector 1.
The invention uses the above mode to complete the quick connection of a plurality of wellheads of the cluster wellsite and the fracturing and acidizing injection pipelines.
The invention can realize the quick connection between the well mouth and the injection high-pressure pipeline in the fracturing and acidizing construction operation of the cluster well site. The large-drift-diameter high-pressure pipeline 2 can move universally, and can be reversed among a plurality of well heads by adjusting the position through the lifting device. The movable base 6 at the bottom of the large-drift-diameter high-pressure pipeline 2 can move and can be adjusted in position in a well site.
The invention simplifies the high-pressure pipeline connection mode of the cluster well fracturing site, reduces a large amount of pipeline connection workload of the well mouth and the high-pressure area, and obviously improves the construction efficiency and the safety. Meanwhile, the on-site fracturing injection process is clear at a glance.
Example 3:
based on the embodiment 1 or 2, in this embodiment, as shown in fig. 3, for a conventional fracturing and acidizing process of a multi-well head, an application mode 1 of the present invention is as follows:
1. the base 6 is put to a proper position according to the number and the position of fracturing and acidizing well mouths as required;
2. a plurality of wellhead quick-plugging bases 8 are arranged on the upper flange of a wellhead to be constructed;
3. according to the well site space, the fracturing truck group 11 is parked behind the base 6 or at the left side and the right side, and the high-pressure discharge end of the fracturing truck is connected with the inlet end of the large-diameter high-pressure pipeline 2 above the base 6 through a high-pressure pipeline 10;
4. lifting the whole large-drift-diameter high-pressure pipeline 2, inserting the wellhead connector 1 into the wellhead quick-insertion base 8, and locking the wellhead quick-insertion base by the remote control system 13;
5. opening a wellhead valve 12 of a wellhead A, emptying the fracturing truck group, closing the wellhead valve 12, and testing the pressure of the integral high-pressure injection pipeline;
6. opening a wellhead valve 12 of a wellhead A, and starting fracturing and acidizing construction of the well A;
7. after fracturing and acidizing construction of the well A is finished, closing a well head valve 12 of the well head A through a remote control system 13 and unlocking a well head connector 1 and a well head quick plugging base 8;
8. and lifting and rotating the whole large-drift-diameter high-pressure pipeline 2 to a wellhead B, inserting the wellhead connector 1 into the wellhead quick-insertion base 8, and locking through the remote control system 13. Starting fracturing and acidizing construction of the well B after pressure testing;
9. a plurality of wellhead connectors 1 and wellhead quick-plugging bases 8 can be configured according to the number of the wellheads, after the well B construction is finished, the injection process is switched to a well C, and the like, so that the quick switching of a plurality of fracturing wellhead injection processes of a cluster well site is realized.
Example 4:
based on the embodiment 1 or 2, in this embodiment, as shown in fig. 3, for a multi-wellhead bridge-shooting joint fracturing and acidizing process, the application mode 2 of the present invention is as follows:
1. the base 6 is put to a proper position according to the number and the position of fracturing and acidizing well mouths as required;
2. a plurality of wellhead quick-plugging bases 8 are arranged on the upper flange of a wellhead to be constructed; realize a plurality of well heads and fracturing well head quick connect device's quick connection, quick unblock separation. The bottom of the wellhead quick-plugging base is connected with a fracturing wellhead flange, and the specification and model of the flange are determined according to the field fracturing wellhead.
3. According to the well site space, the fracturing truck group 11 is parked behind the base 6 or at the left side and the right side, and the high-pressure discharge end of the fracturing truck is connected with the inlet end of the large-diameter high-pressure pipeline 2 above the base 6 through a high-pressure pipeline 10;
4. installing a wellhead connector 1 to the position below a logging pipe string and a blowout preventer 9, lifting the whole logging pipe string by a crane, lowering and connecting the logging pipe string to a well A, locking the wellhead connector 1 and a wellhead quick-plugging base 8 through a remote control system 13, opening a perforating gun below a wellhead valve 12 of the well A after pressure test is qualified, and perforating a first layer (or section) of the well A;
5. after the first layer (or section) of the well A is perforated, the well head connector 1 and the well head quick plugging base 8 are unlocked, the whole logging pipe string is lifted by a crane, the logging pipe string is moved to the well head B after tools are replaced, and the first layer (or section) of the well head B is perforated;
6. lifting the whole large-drift-diameter high-pressure pipeline 2 while lifting the first layer (or section) of the perforated well B, inserting a well mouth connector 1 on the fracturing injection pipeline into a well mouth quick-plugging base 8 of the well mouth A, and locking the well mouth quick-plugging base through a remote control system 13;
7. opening a wellhead valve 12 of a wellhead A, emptying the fracturing truck group, closing the wellhead valve 12, and testing the pressure of the integral high-pressure injection pipeline;
8. opening a wellhead valve 12 of a wellhead A, and starting fracturing and acidizing construction of a first layer (or section) of the well A;
9. after fracturing and acidizing construction of the well A is finished, closing a well head valve 12 of the well head A through a remote control system 13 and unlocking a well head connector 1 and a well head quick plugging base 8;
10. after the first layer (or section) of the well B is perforated, closing a well head valve 12 of the well B, unlocking the well head, connecting and lifting the whole logging pipe string, lifting and rotating the whole large-drift-diameter high-pressure pipeline 2 to the well head B, connecting and locking the well head valve 12 of the well B after pressure testing, and starting fracturing and acidizing construction of the first layer (or section) of the well B;
11. a logging pipe string replacing tool is lifted and moved to a well A, and bridge plug punching and perforation construction of a second layer (or section) of the well A are started;
12. and similarly, after the fracturing and acidizing construction of the first layer (or section) of the well B is finished, the fracturing injection process is switched to the well A again, the fracturing and acidizing construction of the second layer (or section) of the well A is carried out, meanwhile, the logging process is switched to the well B, and the bridge plug and perforation construction of the second layer (or section) of the well B is started. The efficient construction operation of cluster well bridge launching combined fracturing and acidizing construction is realized by reciprocating in the way;
13. a plurality of wellhead connectors 1 and wellhead quick-plugging bases 8 can be configured according to the number of wellheads, and a plurality of perforating units are matched to form a high-efficiency construction mode of bridging and perforating combination of one fracturing unit and a plurality of perforating units in cluster wellsites.
In the invention, the remote control system 13 can remotely control the opening and closing of the wellhead valve 12 and the locking between the wellhead quick-plugging base 8 and the wellhead connector 1. Control methods include, but are not limited to, pneumatic, electric, and hydraulic controls. The integrated design of the wellhead connector 1, the high-pressure rotating part 3, the large-drift-diameter high-pressure pipeline 2 and the base 6 is realized. The lifting mode of the whole large-diameter high-pressure pipeline 2 includes but is not limited to lifting of a boom, mechanical arm lifting and crane matched lifting.
In the present invention, the logging string, the blowout preventer 9 and the remote control system 13 are all the prior art, and further description will not be provided in the present invention.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention. The device structure and system method not described in detail in the present invention are prior art, and will not be further described in the present invention.
Claims (9)
1. The utility model provides a fracturing well head quick connecting device which characterized in that: including well head connector (1), big latus rectum high-pressure line (2), high-pressure tee bend (4), cross (5) and base (6), big latus rectum high-pressure line (2) one end be connected with high-pressure tee bend (4), the other end is connected with well head connector (1), high-pressure tee bend (4) are connected with cross (5), high-pressure tee bend (4) and the equal fixed connection of cross (5) are on base (6).
2. The fracturing wellhead quick connection device of claim 1, wherein: the large-drift-diameter high-pressure pipeline (2) is formed by sequentially connecting a plurality of high-pressure pipelines, and two adjacent high-pressure pipelines are connected through a high-pressure rotating part (3); the length of each high-pressure pipeline is different, and the connection angle of two adjacent high-pressure pipelines is random.
3. The fracturing wellhead quick connection device of claim 2, wherein: the high-pressure rotating part (3) is a movable part capable of bearing high pressure, and the high pressure is not more than 105MPa.
4. A frac wellhead quick connect device as claimed in claim 2 wherein: the high-pressure rotating part (3) is a movable elbow.
5. The fracturing wellhead quick connection device of claim 1, wherein: the base (6) is a movable base.
6. The fracturing wellhead quick connection device of claim 1, wherein: the four-way joint (5) is internally provided with three plugs (7).
7. The fracturing wellhead quick connection device of claim 1, wherein: the large-drift-diameter high-pressure pipeline (2) is connected with the high-pressure tee joint (4) through the high-pressure rotating component (3).
8. The quick connection method of a fracturing wellhead quick connection device according to any one of claims 1 to 7, characterized in that: the method comprises the following specific steps:
firstly, placing a movable base (6) to proper positions according to the number and the positions of fracturing and acidizing well mouths as required;
secondly, according to the well site space, the fracturing unit is parked behind or on the left side and the right side of the base (6), a high-pressure discharge end of the fracturing truck is connected with one inlet of a four-way joint (5) above the base (6) through a high-pressure pipeline, and the unconnected inlet is plugged by a plug (7);
lifting the whole large-drift-diameter high-pressure pipeline (2) by using a crane, moving the wellhead connector (1) to the position above a wellhead, and quickly connecting the wellhead connector with a wellhead fracturing injection port;
step four, emptying the fracturing pump truck, closing a well head gate, and testing the pressure of the whole high-pressure injection pipeline;
step five, opening a well mouth gate after the integral pressure test is qualified, and starting fracturing and acidizing construction;
and step six, after the construction is finished, closing the gate of the well mouth, disassembling the connector (1) of the well mouth after the pressure is released, lifting the whole large-drift-diameter high-pressure pipeline (2), and directly moving the whole large-drift-diameter high-pressure pipeline (2) to the next well mouth of the well to be fractured and acidized to be connected.
9. The quick connect method of claim 8, wherein: and sixthly, when moving to the next well, if the distance between the well mouth of the well and the base (6) exceeds the maximum rotation radius of the corresponding large-drift-diameter high-pressure pipeline (2), moving the whole base (6) to ensure that the well mouth fracturing injection port of the well is connected with the corresponding well mouth connector (1).
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| CN112628607A (en) * | 2020-12-17 | 2021-04-09 | 四川宏华石油设备有限公司 | Fracturing high-low pressure manifold system with prying at bottom of large-drift-diameter bypass manifold |
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2021
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| CN111810059A (en) * | 2020-07-28 | 2020-10-23 | 重庆新泰机械有限责任公司 | Large-drift-diameter high-low pressure distribution fracturing straight manifold device |
| CN112628607A (en) * | 2020-12-17 | 2021-04-09 | 四川宏华石油设备有限公司 | Fracturing high-low pressure manifold system with prying at bottom of large-drift-diameter bypass manifold |
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