CN109441420B - Light-duty high low pressure fracturing manifold - Google Patents
Light-duty high low pressure fracturing manifold Download PDFInfo
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- CN109441420B CN109441420B CN201811277267.XA CN201811277267A CN109441420B CN 109441420 B CN109441420 B CN 109441420B CN 201811277267 A CN201811277267 A CN 201811277267A CN 109441420 B CN109441420 B CN 109441420B
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- 239000012530 fluid Substances 0.000 claims abstract description 40
- 239000000956 alloy Substances 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 12
- 238000009434 installation Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 101000793686 Homo sapiens Azurocidin Proteins 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/021—T- or cross-pieces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides a light high-low pressure fracturing manifold, which comprises a skid-mounted part, a high-pressure manifold set and a low-pressure manifold set, wherein the high-pressure manifold set and the low-pressure manifold set are fixed on the skid-mounted part; the low-pressure manifold group comprises a transverse main pipe and a longitudinal main pipe; a plurality of low-pressure suction inlets are uniformly distributed on the longitudinal main pipe; a plurality of low-pressure discharge ports are respectively and uniformly distributed towards the two outer sides of the transverse main pipe, and control valves are respectively arranged on the low-pressure suction port and the low-pressure discharge port; each channel of the high-pressure manifold group comprises a main channel and a plurality of branch channels, the branch channels are provided with high-pressure fluid inlets, the branch channels are connected with the main channel through T-shaped tee joints, and hard alloy bushings are inlaid in the T-shaped tee joints and can protect the inner walls of the T-shaped tee joints from being washed and damaged by high-pressure fluid; the left end of the main channel is a high-pressure fluid outlet end, and the right end is connected with a right-angle tee joint by a right-angle two-way joint. The invention has stable working performance, is convenient for arrangement and operation of the fracturing trucks, can flexibly set the branch channels, and is beneficial to miniaturization and light weight of equipment.
Description
Technical Field
The invention belongs to the technical field of oilfield fracturing equipment, and particularly relates to a light high-low pressure fracturing manifold.
Background
The underground of the middle and western regions of China is rich in natural gas, petroleum, shale gas and other mineral substances, and because the mountain terrain is complex, large-scale fracturing equipment is difficult to enter a construction site in the petroleum exploitation process, a light high-low pressure fracturing manifold needs to be developed, has the characteristics of high pressure, compact structure and light weight, and is completely suitable for transportation construction in severe environments such as mountain hills and the like.
In fracturing construction, a plurality of fracturing trucks are connected through skid-mounted equipment so as to convey the pressurized liquid of the fracturing trucks into a well at the same time. The high-pressure manifold suction inlet on the existing high-low manifold and the main pipeline form a 45-degree Y-shaped three-way structure, so that the fracturing fluid is conveniently sucked, and the resistance and the scouring damage to the main channel are reduced; however, the two sides of the fracturing trucks are arranged in an inclined manner in the installation process, so that the method is inconvenient, the occupied site range is large, the fracturing well sites are often positioned between hilly and gullies, the size of the fracturing well sites is limited, and the construction operation is inconvenient. In order to increase the injection amount of the construction displacement, the existing fracturing manifold is generally densely provided with high-pressure suction inlets, so that the fracturing manifold is inconvenient to connect with high-pressure pipelines and low-pressure pipelines of a 2000-type fracturing unit, the weight reduction and transportation of the manifold are not facilitated, and the arrangement operation of a fracturing truck is inconvenient; in order to increase the injection amount of construction displacement, the existing fracturing manifold is of an H-shaped structure, and low-pressure suction inlets are formed in two ends of the low-pressure manifold generally, however, reverse convection of fracturing fluid at two ends of the low-pressure suction inlets causes large flowing resistance and serious turbulence of the fracturing fluid, so that effective suction rate is reduced, vibration of the low-pressure manifold is serious, stable suction of the fracturing fluid is not facilitated, loose and falling damage of bolt workpieces is easily caused, and the fracturing manifold is large and heavy.
Disclosure of Invention
The invention aims to provide a lightweight light high-low pressure fracturing manifold, which is convenient to connect the manifold with a fracturing truck and is convenient for the arrangement and operation of the fracturing truck, meanwhile, a hard alloy bushing communicated with a middle hole is embedded in a main channel of a T-shaped tee joint, so that the flushing resistance is good, and the service life is long; the fracturing fluid flows stably, and the effective suction rate is high.
The invention provides the following technical scheme:
the light high-low pressure fracturing manifold comprises a skid-mounted part, a high-pressure manifold group and a low-pressure manifold group, wherein the high-pressure manifold group and the low-pressure manifold group are fixed on the skid-mounted part, and the high-pressure manifold group is arranged right above the low-pressure manifold group;
The low-pressure manifold group is a T-shaped single-channel manifold and comprises a transverse main pipe and a longitudinal main pipe arranged at the right end of the transverse main pipe; a plurality of low-pressure suction inlets are uniformly distributed on the longitudinal main pipe, the plurality of low-pressure suction inlets are distributed in a row, and each low-pressure suction inlet is respectively connected with the discharge outlet of the sand mixing vehicle; a plurality of low-pressure discharge ports are respectively and uniformly distributed towards the two outer sides of the transverse main pipe, the low-pressure discharge ports are connected with the suction ports of the fracturing trucks, and control valves are respectively arranged on the low-pressure suction ports and the low-pressure discharge ports; the left end of the transverse main pipe is of a sealing structure, so that the phenomenon that the flow resistance of the fracturing fluid is high, the turbulence is aggravated and the flow is reduced due to the fact that the fracturing fluid at the two ends is caused by convection because the fracturing fluid at the two ends is sucked into the fracturing fluid at the same time by the left end and the right end of the transverse main pipe at the same time can be prevented by arranging the low-pressure suction inlet at one end of the transverse main pipe; simultaneously, the miniaturization and the light weight of the equipment are facilitated, and the transportation and the installation are facilitated;
the high-pressure manifold set is of a parallel double-channel structure, each channel of the high-pressure manifold set comprises a main channel and a plurality of branch channels communicated with the main channel, the branch channels are connected with the main channel through T-shaped tee joints, each T-shaped tee joint comprises a middle hole connected with the branch channel and two side holes connected with the main channel, a hard alloy bushing is inlaid in each T-shaped tee joint, the hard alloy bushing is located in each side hole and communicated with the middle hole, and the inner wall of each hard alloy bushing can be protected from being washed and damaged by high-pressure fluid flowing in each branch channel; the branch channel is provided with a high-pressure fluid inlet which is connected with a high-pressure discharge port of the fracturing truck; the left end of the main channel is a high-pressure fluid outlet, the right end of the main channel is connected with a right-angle tee joint through a right-angle two-way pipe, the other interface of the right-angle tee joint is a pressure transmitter interface, and the high-pressure fluid outlet is connected with a fracturing pipeline of a wellhead; the branch channel and the main channel are vertically connected by a T-shaped tee joint, thereby facilitating the connection of the branch channel and the fracturing truck. Because the space and the space between the two main channels are smaller, the right ends of the two main channels are inconvenient to arrange and connect with the fracturing trucks, so that the right ends of the main channels are of a sealing structure, the configuration quantity of pipelines and parts is reduced, the equipment is convenient to miniaturize and lighten, and the transportation and the installation are convenient; the high-pressure fluid outlet is arranged at the left end of the main channel, so that the operation of the fracturing truck is facilitated. During construction, the well mixed fracturing fluid in the sand mixing vehicle is sucked into the fracturing vehicle through the low-pressure manifold group to supply the fracturing vehicle with the fracturing fluid, is pressurized by a fracturing pump on the fracturing vehicle and then is discharged to the high-pressure manifold, and then is conveyed to a wellhead through a high-pressure fluid outlet of the high-pressure manifold for fracturing construction.
Preferably, each main channel at least comprises two short sections, the two short sections are connected through a T-shaped tee joint, the T-shaped tee joint is connected with the short sections, the T-shaped tee joint is connected with the branch channel through a tight cap and a movable clamp, the movable clamp is clamped between a port of the T-shaped tee joint and the tight cap, and a check ring for a shaft is arranged in an outer circular groove of the movable clamp. The number of the short sections and the branch channels on the main channel can be flexibly set according to the needs, and the tight caps and the movable cards between the branch channels and the main channel are connected and fastened reliably, so that the installation is fast and convenient, and the device is suitable for high-pressure operation.
Preferably, the high-pressure fluid outlet is provided with a plug, and the plug is arranged on the high-pressure fluid outlet through a tightening cap and a movable clamp. When the fracturing truck is in construction, the tightening cap, the movable clamp and the plug are removed, the high-pressure movable elbow is connected to the high-pressure fluid outlet, and the other end of the high-pressure movable elbow is connected with the high-pressure pipeline.
Preferably, the branch channel is provided with a one-way valve, a plug valve and a3 '-2' reducer union which are sequentially connected, the one-way valve is connected to one port of the T-shaped tee joint, and the reducer union is connected with an output port of a high-pressure pump on an external fracturing truck set.
Preferably, the interval between the high-pressure fluid inlets is 2.5-2.8 m, so that the high-pressure pipeline and the low-pressure pipeline of the 2000-type fracturing unit are conveniently connected.
Preferably, the low pressure suction inlet and the low pressure discharge outlet of the low pressure manifold are provided with a blocking cover which is fixed on the transverse main pipe or the longitudinal main pipe by a chain. Normally, the low-pressure suction inlet and the low-pressure discharge outlet are blocked by the blocking cover, so that the low-pressure suction inlet and the low-pressure discharge outlet are prevented from being blocked by foreign matters; when the plug is used, the plug is taken down, and the plug is fixed by a chain, so that the loss of the plug can be prevented.
Preferably, an end cap is mounted on the left port of the transverse main pipe of the low pressure manifold group, end caps are also mounted on the two ports of the longitudinal main pipe, and each end cap is clamped on the transverse main pipe or the longitudinal main pipe through a clamp, so that a sealing structure is formed, and the end caps are detachable, thereby facilitating the increase/decrease of the number of short sections of the high pressure manifold group and the number of the transverse main pipes of the low pressure manifold group according to the requirement.
Preferably, the invention further comprises a high-low pressure manifold connecting piece, the high-low pressure manifold connecting piece comprises two short joint supporting pipes, a high-pressure end backing plate and two short joint U-shaped bolts, the two short joint supporting pipes are fixed on the skid-mounted part and clamp the transverse main pipe between the two short joint supporting pipes, the high-pressure end backing plate is horizontally fixed above the two short joint supporting pipes, the setting direction of the high-pressure end backing plate is perpendicular to the direction of the transverse main pipe, the two short joint U-shaped bolts are symmetrically arranged above each high-pressure end backing plate, and the two main channels of the high-pressure manifold are respectively clamped in the two short joint U-shaped bolts, so that the connection of the high-pressure manifold and the low-pressure manifold is firm and firm, and the high-pressure manifold connecting piece is suitable for hoisting and transportation of frequent transition construction.
Preferably, a plurality of high-low pressure manifold connectors are arranged above the transverse main pipe at intervals, so that the high-pressure manifold group is more stably and firmly connected with the low-pressure manifold group.
Preferably, two lifting lugs are respectively arranged at the left side and the right side of the skid-mounted lifting device, so that the lifting is convenient, and the safety and stability in the lifting process are ensured.
The beneficial effects of the invention are as follows:
1. The Y-shaped tee joint is changed into a T-shaped tee joint, so that a manifold is convenient to directly connect with a fracturing workshop, and the arrangement and the operation of a fracturing truck are convenient; the T-shaped tee joint is provided with the hard alloy bushing which is communicated with the middle hole, is resistant to high-pressure liquid scouring and has long service life.
2. The low-pressure manifold H-shaped structure is designed into a T-shaped structure, only one end of the low-pressure manifold H-shaped structure is provided with a suction inlet, so that opposite impact vibration is reduced, the miniaturization and the light weight of the equipment are facilitated, and the transportation and the installation are facilitated.
3. The right end of the main channel is connected with a right-angle tee joint through a right-angle two-way joint, a high-pressure fluid inlet connected with the fracturing truck is not arranged at the right end of the main channel, the fracturing truck is convenient to arrange and operate, the configuration quantity of pipelines and parts is reduced, and the equipment is light.
4. According to the high-pressure manifold, the main channels and the branch channels of the high-pressure manifold are vertically connected, the number of the branch channels can be flexibly set, the miniaturization and the light weight of equipment are facilitated, and the transportation and the installation are facilitated.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic diagram of the front view of FIG. 1;
FIG. 3 is a schematic view of a skid-mounted structure of the present invention;
FIG. 4 is a schematic view of the low pressure manifold assembly of the present invention;
FIG. 5 is a schematic view of the high pressure manifold assembly of the present invention;
FIG. 6 is an enlarged schematic view of portion A of FIG. 5;
FIG. 7 is a schematic structural view of a cemented carbide bushing within a T-tee;
Marked in the figure as: 1. skid-mounted; 11. lifting lugs; 2. a high pressure manifold group; 21. a main channel; 211. two-way right angle; 212. a high pressure fluid outlet; 213. a short section; t-tee; 2141. a cemented carbide bushing; 2142. a middle hole; 2143. a side hole; 215. tightening the cap; 216. a movable card; 217. an axial retainer ring; 218. a plug; 219. a right-angle tee joint; 22. a branch channel; 221. a high pressure fluid inlet; 222. a one-way valve; 223. a plug valve; 224. a reducing joint; 3. a low pressure manifold group; 31. a transverse main pipe; 32. a longitudinal main pipe; 33. a low pressure suction inlet; 34. a low pressure discharge port; 35. a manual butterfly valve; 36. a blanking cover; 37. an end cap; 38. a clamp; 4. a short section supporting tube; 5. a high pressure end pad; 6. short section U-shaped bolt.
Detailed Description
As shown in fig. 1 to 5, a light high-low pressure fracturing manifold comprises a skid 1, a high-pressure manifold set 2 and a low-pressure manifold set 3, wherein the high-pressure manifold set 2 and the low-pressure manifold set 3 are fixed on the skid 1, and the high-pressure manifold set 2 is arranged right above the low-pressure manifold set 3;
The low-pressure manifold group 3 is a T-shaped single-channel manifold, and the low-pressure manifold group 3 comprises a transverse main pipe 31 and a longitudinal main pipe 32 arranged at the right end of the transverse main pipe 31; four low-pressure suction inlets 33 are uniformly distributed on the longitudinal main pipe 32, the four low-pressure suction inlets 33 are distributed in a row, one end of each low-pressure suction inlet 33 is connected with the longitudinal main pipe 32 through a 4' union female connector, and the other end of each low-pressure suction inlet 33 is respectively connected with the discharge outlet of the sand mixing vehicle; three low-pressure discharge ports 34 are respectively and uniformly distributed towards the two outer sides of the transverse main pipe 31, one end of each low-pressure discharge port 34 is connected with the longitudinal main pipe 32 through a4 'union joint, the other end of each low-pressure discharge port 34 is connected with a suction port of the fracturing truck, control valves are respectively arranged on the low-pressure suction ports 33 and the low-pressure discharge ports 34, and each control valve is a 4' manual butterfly valve 35, and the total number of the control valves is 10 manual butterfly valves; the left end of the transverse main pipe 31 is of a sealing structure;
The high-pressure manifold set 2 is of a parallel double-channel structure, each channel of the high-pressure manifold set 2 comprises a main channel 21 and a plurality of branch channels 22 vertically communicated with the main channel 21, the main channel 21 and the branch channels 22 are connected through a T-shaped tee joint 214, as shown in fig. 7, the T-shaped tee joint 214 comprises a middle hole 2142 connected with the branch channels and two side holes 2143 connected with the main channel, a hard alloy bush 2141 is embedded in the T-shaped tee joint 214, the hard alloy bush is positioned in the side holes 2143 and is communicated with the middle hole 2142, and the hard alloy bush 2141 can protect the inner wall of the T-shaped tee joint 214 from being scoured and worn by high-pressure circulation flowing in from the branch channels 22; the branch passage 22 is provided with a high-pressure fluid inlet 221, and the high-pressure fluid inlet 221 is connected with a high-pressure discharge port of the fracturing truck; the left end of the main channel 21 is a high-pressure fluid outlet 212, the right end is connected with a right-angle tee joint 219 by a right-angle two-way valve 211, the other interface of the right-angle tee joint 219 is a pressure transmitter interface, and the high-pressure fluid outlet 212 is connected with a fracturing pipeline of a wellhead.
As shown in fig. 6, each main channel 21 comprises two short sections 213, a T-shaped tee joint 214 is connected between the two short sections 213, the T-shaped tee joint 214 is connected with the branch channels 22 through a tight cap 215 and a movable clamp 216, the movable clamp 216 is clamped between a port of the T-shaped tee joint 214 and the tight cap 215, and a shaft retainer ring 217 is arranged in an outer circular groove of the movable clamp 216. The number of the short sections 213 on the main channel 21 and the number of the branch channels 22 can be flexibly set according to the needs, and the tight cap 215 and the movable clamp 216 between the branch channels 22 and the main channel 21 are reliably connected and fastened, so that the installation is convenient and quick, and the device is suitable for high-pressure operation.
As shown in fig. 5, a plug 218 is provided on the high-pressure fluid outlet 212, and the plug 218 is mounted on the high-pressure fluid outlet 212 through a tightening cap 215 and a movable card 216. During the construction of the fracturing truck, the tightening cap 215, the movable clamp 216 and the plug 218 are removed, the high-pressure movable elbow is connected to the high-pressure fluid outlet 212, and the other end of the high-pressure movable elbow is connected with the high-pressure pipeline.
As shown in fig. 5, six branch channels 22 are provided on each main channel 21, a3 "FIG 1502×105MPa check valve 222, a 3" FIG1502×105MPa plug valve 223, and a3 "-2" FIG1502×105MPa reducer 224 are provided on each branch channel 22 in sequence, and the check valves 222 are connected to one port of the T-tee 214, so that six high-pressure fluid inlets 212 are formed on the skid. The reducer union 224 connects to the high pressure pump output ports on the external fracturing set.
The spacing between the high pressure fluid inlets 212 is 2.5-2.8 meters, facilitating connection of the high and low pressure lines of the 2000-type fracturing unit.
As shown in fig. 4, the low-pressure suction port 33 and the low-pressure discharge port 34 of the low-pressure manifold group 3 are each provided with a blanking cover 36, and the blanking cover 36 is fixed to the lateral main pipe 31 or the longitudinal main pipe 32 by a chain.
As shown in fig. 4, the left end of the transverse main pipe 31 of the low pressure manifold group 3 is provided with end caps 37, and both ends of the longitudinal main pipe 32 are also provided with end caps 37, each end cap 37 is clamped to the transverse main pipe 31 or the longitudinal main pipe 32 by a clamp 38, thereby forming a sealing structure, and the end caps 37 are detachable, so that the number of short pieces of the high pressure manifold group and the number of transverse main pipes of the low pressure manifold group can be increased/decreased as required.
As shown in fig. 2, the present embodiment further includes a high-low pressure manifold connection, the high-low pressure manifold connection includes two short joint support pipes 4, a high-pressure end pad 5 and two short joint U-shaped bolts 6, the two short joint support pipes 4 are fixed on the skid 1 and clamp the transverse main pipe 31 between the two short joint support pipes 4, the high-pressure end pad 5 is horizontally fixed above the two short joint support pipes 4, the setting direction of the high-pressure end pad 5 is perpendicular to the direction of the transverse main pipe 31, the two short joint U-shaped bolts 6 are symmetrically installed above each high-pressure end pad 5, and the two main channels 21 of the high-pressure manifold 2 are respectively clamped in the two short joint U-shaped bolts 6.
A plurality of high-low pressure manifold connectors are arranged above the transverse main pipe 31 at intervals, so that the high-low pressure manifolds can be connected more stably.
As shown in fig. 3, two lifting lugs 11 are respectively mounted on the left side and the right side of the skid 1, so that the skid is convenient to lift.
The embodiment accords with the API standard, and the combined use can meet the requirement that the maximum connection of 6 2000-stage fracturing trucks participates in construction at the same time. The manifold of this embodiment overall dimension is 6400X 2500X 940mm, and total weight is about 4.4 tons, and is less than half former equipment weight, and the agricultural vehicle transportation of 5 tons of being convenient for accords with the requirement of lightweight completely.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The light high-low pressure fracturing manifold is characterized by comprising a skid-mounted part, a high-pressure manifold group and a low-pressure manifold group, wherein the high-pressure manifold group and the low-pressure manifold group are fixed on the skid-mounted part, and the high-pressure manifold group is arranged right above the low-pressure manifold group;
The low-pressure manifold set is a T-shaped single-channel manifold and comprises a transverse main pipe and a longitudinal main pipe arranged at the right end of the transverse main pipe; a plurality of low-pressure suction inlets are uniformly distributed on the longitudinal main pipe, and the low-pressure suction inlets are distributed in a row; a plurality of low-pressure discharge ports are uniformly distributed towards the two outer sides of the transverse main pipe respectively, and control valves are arranged on the low-pressure suction port and the low-pressure discharge port respectively;
The high-pressure manifold is of a parallel double-channel structure, each channel of the high-pressure manifold comprises a main channel and a plurality of branch channels communicated with the main channel, the branch channels are connected with the main channel through T-shaped tee joints, each T-shaped tee joint comprises a middle hole connected with the branch channel and two side holes connected with the main channel, a hard alloy bushing is inlaid in each T-shaped tee joint, and the hard alloy bushing is located in each side hole and communicated with the middle hole; the branch channel is provided with a high-pressure fluid inlet; the left end of the main channel is a high-pressure fluid outlet, the right end of the main channel is connected with a right-angle tee joint through a right-angle two-way joint, and the other interface of the right-angle tee joint is a pressure transmitter interface;
The low-pressure suction inlet and the low-pressure discharge outlet are respectively provided with a blocking cover, and the blocking covers are fixed on the transverse main pipe or the longitudinal main pipe by chains;
two lifting lugs are respectively arranged on the left side and the right side of the skid-mounted device.
2. The light high-low pressure fracturing manifold according to claim 1, wherein each main channel at least comprises two short sections, the two short sections are connected through the T-shaped tee joint, the T-shaped tee joint is connected with the short sections, the T-shaped tee joint is connected with the branch channels through a tight cap and a movable clamp, the movable clamp is clamped between a port of the T-shaped tee joint and the tight cap, and a shaft retainer ring is arranged in an outer circular groove of the movable clamp.
3. The lightweight high and low pressure frac manifold of claim 2, wherein the high pressure fluid outlet is provided with a plug mounted thereto by the tightening cap and the moveable clip.
4. The light high-low pressure fracturing manifold according to claim 2, wherein the branch channel is provided with a one-way valve, a plug valve and a reducer union which are sequentially connected, the one-way valve is connected to one port of the T-shaped tee joint, and the reducer union is connected with an output port of a high-pressure pump on an external fracturing truck set.
5. The lightweight high and low pressure frac manifold of claim 1, wherein the spacing between the high pressure fluid inlets is 2.5-2.8 meters.
6. The lightweight high and low pressure frac manifold of claim 1, wherein an end cap is mounted on the left port of the transverse main tube and the end caps are also mounted on the two ports of the longitudinal main tube, each of the end caps being clamped to either the transverse main tube or the longitudinal main tube by a clamp.
7. The light high-low pressure fracturing manifold according to claim 2, further comprising a high-low pressure manifold connecting piece, wherein the high-low pressure manifold connecting piece comprises two short joint supporting pipes, a high-pressure end base plate and two short joint U-shaped bolts, the two short joint supporting pipes are fixed on the skid-mounted part and clamp the transverse main pipe between the two short joint supporting pipes, the high-pressure end base plate is horizontally fixed above the two short joint supporting pipes, the setting direction of the high-pressure end base plate is perpendicular to the direction of the transverse main pipe, the two short joint U-shaped bolts are symmetrically arranged above each high-pressure end base plate, and the two main channels are respectively clamped in the two short joint U-shaped bolts.
8. The lightweight high and low pressure frac manifold of claim 7, wherein a plurality of said high and low pressure manifold connections are spaced above said lateral main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811277267.XA CN109441420B (en) | 2018-10-30 | 2018-10-30 | Light-duty high low pressure fracturing manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811277267.XA CN109441420B (en) | 2018-10-30 | 2018-10-30 | Light-duty high low pressure fracturing manifold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441420A CN109441420A (en) | 2019-03-08 |
| CN109441420B true CN109441420B (en) | 2024-05-31 |
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Family Applications (1)
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| CN110056330A (en) * | 2019-03-13 | 2019-07-26 | 中国电建集团河南工程有限公司 | Geothermal well down-hole pipe medicine system and descaling method |
| CN112628607B (en) * | 2020-12-17 | 2022-08-23 | 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 |
| CN112963134B (en) * | 2021-04-25 | 2023-07-07 | 建湖县鸿达阀门管件有限公司 | Ultrahigh-pressure double-channel large-drift-diameter high-low-pressure fracturing manifold |
| CN115095308B (en) * | 2022-07-04 | 2023-07-07 | 盐城市崇达石化机械有限公司 | Vehicle-mounted high-pressure fracturing manifold capable of being quickly docked |
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