Anti-erosion hydraulic fracturing jetting device

Abstract

The utility model relates to the technical field of oil and gas field development, in particular to an anti-erosion hydraulic fracturing jetting device which comprises a shell and a flow-dividing type anti-erosion assembly, the flow-dividing type anti-erosion assembly comprises a flow-dividing pipe, a flow-dividing groove and a main flow hole, the flow-dividing pipe is fixedly connected with the shell and located on the lower portion in the shell, the flow-dividing groove is fixedly connected with the flow-dividing pipe, and the main flow hole is located in the shell. The flow dividing groove is fixedly connected with the flow dividing pipe and located in the flow dividing pipe, the main flow hole is fixedly connected with the flow dividing pipe and located in the center of the interior of the flow dividing pipe, and the main flow hole is formed in one side of the flow dividing groove. Therefore, the problems that rock debris splashed back under high injection pressure and jet flow speed and fracturing fluid retrojed along a perforation opening of a sleeve can seriously erode the injector and the continuous oil pipe and even pierce the continuous oil pipe sometimes, so that the service life of the continuous oil pipe and a sand blower is greatly shortened, and the service life of the continuous oil pipe and the sand blower is greatly shortened are effectively solved. And therefore, the fracturing cost is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas field development, in particular to an anti-erosion hydraulic fracturing injection device. Background Art

[0002] At present, hydraulic fracturing technology has always been the most effective reservoir transformation method for developing unconventional reservoir oil and gas resources. Among them, continuous tubing sandblasting fracturing technology has achieved good staged fracturing effects in horizontal well sections in recent years due to its simple operation, no need for mechanical sealing, short operation cycle, and few drilling times.

[0003] However, when using this technology for fracturing, the strong injection pressure and jet velocity of the rock chips splashed back and the fracturing fluid reflected along the casing perforations will cause severe erosion on the injector and coiled tubing, and sometimes even puncture the coiled tubing, which greatly shortens the service life of the coiled tubing and sandblaster, thereby greatly increasing the cost of fracturing.

[0004] In order to solve the above problems, we proposed an anti-erosion hydraulic fracturing injection device. Utility Model Content

[0005] The purpose of the utility model is to provide an erosion-resistant hydraulic fracturing injection device, which solves the problem that under strong injection pressure and jet velocity, the rock chips splashed back and the fracturing fluid reflected along the casing perforations will cause serious erosion to the injector and coiled tubing, and sometimes even puncture the coiled tubing, which greatly shortens the service life of the coiled tubing and sandblaster, thereby greatly increasing the cost of fracturing.

[0006] To achieve the above-mentioned purpose, the utility model adopts an anti-erosion hydraulic fracturing injection device, including an outer shell and a diverter type anti-erosion component, the diverter type anti-erosion component including a diverter pipe, a diverter groove and a main flow hole, the diverter pipe is fixedly connected to the outer shell and is located at the lower interior of the outer shell, the diverter groove is fixedly connected to the diverter pipe and is located inside the diverter pipe, the main flow hole is fixedly connected to the diverter pipe and is located at the inner center of the diverter pipe, and the main flow hole is arranged on one side of the diverter groove.

[0007] Among them, the diverter-type anti-erosion component also includes a mounting ring and a positioning block. The mounting ring is detachably connected to the outer shell and is located on the upper outer surface of the outer shell. The positioning block is fixedly connected to the mounting ring and is located on the outer surface of the mounting ring.

[0008] In which, the diversion type anti-erosion component also includes a connecting plate and a connecting block, the connecting block is fixedly connected to the diversion tube and is located below the diversion tube, and the connecting block is arranged below the outer shell, the connecting plate is detachably connected to the connecting block and is located below the connecting block, and the connecting plate is arranged below the outer shell.

[0009] Among them, the diversion type anti-erosion component also includes a disassembly pad and a chamfer. The disassembly pad is detachably connected to the connecting plate and is located below the connecting plate. The chamfer is fixedly connected to the disassembly pad and is located at the inner center of the disassembly pad.

[0010] In which, the diversion type anti-erosion component also includes a pressure nozzle and a pressure chamber. The pressure nozzle is fixedly connected to the connecting plate and is located below the connecting plate. The pressure nozzle is arranged at the internal center of the disassembly and assembly pad. The pressure nozzle is also arranged at the internal center of the chamfer. The pressure chamber is fixedly connected to the pressure nozzle and is located inside the pressure nozzle.

[0011] The utility model discloses an anti-erosion hydraulic fracturing injection device, comprising a shell and a diverter type anti-erosion component, the diverter type anti-erosion component comprising a diverter pipe, a diverter groove and a main flow hole, the diverter pipe is fixedly connected to the shell and is located at the lower part of the interior of the shell, the diverter groove is fixedly connected to the diverter pipe and is located inside the diverter pipe, the main flow hole is fixedly connected to the diverter pipe and is located at the inner center of the diverter pipe, and the main flow hole is arranged on one side of the diverter groove. Since the original structure is modified and replaced with the diverter type anti-erosion component, it will effectively solve the problem that the rock chips splashed back under strong injection pressure and jet speed and the fracturing fluid shot back along the casing perforation port will cause serious erosion to the injector and the continuous oil pipe, and sometimes even puncture the continuous oil pipe, which greatly shortens the service life of the continuous oil pipe and the sandblaster, thereby greatly increasing the fracturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a front view of the entire utility model.

[0014] Figure 2 This utility model Figure 1 AA line structural cross-sectional view.

[0015] Figure 3 This utility model Figure 2 A magnified view of the local structure at point B.

[0016] 101-housing, 102-mounting ring, 103-positioning block, 104-diverter pipe, 105-diverter slot, 106-main flow hole, 107-connecting plate, 108-connecting block, 109-disassembly and assembly pad, 110-bevel chamfer, 111-pressurized nozzle, 112-pressurized chamber. DETAILED DESCRIPTION

[0017] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0018] See also Figures 1 to 3 , Figure 1 This is a front view of the utility model as a whole. Figure 2 This utility model Figure 1 AA line structural cross-sectional view, Figure 3 This utility model Figure 2 A magnified view of the local structure at point B.

[0019] The utility model provides an anti-erosion hydraulic fracturing injection device, including a housing 101 and a diverter type anti-erosion assembly, wherein the diverter type anti-erosion assembly includes a diverter pipe 104, a diverter groove 105, a main flow hole 106, a mounting ring 102, a positioning block 103, a connecting plate 107, a connecting block 108, a disassembly pad 109, a chamfer 110, a pressurized nozzle 111 and a pressurized chamber 112. The above solution solves the problem that the rock chips splashed back under strong injection pressure and jet velocity and the fracturing fluid reflected back along the casing perforation port will cause serious damage to the injector and the coiled tubing. The erosion may even puncture the coiled tubing, which greatly shortens the service life of the coiled tubing and the sandblaster, thereby greatly increasing the cost of fracturing. It is understandable that the above-mentioned solution can be used when hydraulic fracturing the oil and gas field. The staff will install the housing 101 to the specified position by using the mounting ring 102 and the positioning block 103. The fracturing fluid will enter the diverter pipe 104 through the housing 101, and the diverter groove 105 in the diverter pipe 104 will cooperate with the main flow hole 106 to divert the fracturing fluid into two parts, wherein The diverter groove 105 will occupy 30% of the fracturing fluid, and the main flow hole 106 will occupy 70% of the fracturing fluid. The main flow hole 106 will effectively transmit the fracturing fluid to the pressurized chamber 112 in the pressurized nozzle 111 for pressurization, and then the pressurized nozzle 111 will spray the fracturing fluid, thereby performing a fracturing operation on the oil and gas field. The backwash flow formed by the fracturing fluid will be intercepted by the jet flow ejected from the diverter groove 105 to prevent the backwash flow from damaging the shell 101. Since the pressurized nozzle 111 sprays the fracturing fluid in a conical shape, The chamfer 110 on the disassembly pad 109 will effectively reduce the impact force of the reflected fracturing fluid, so that the overall service life can be effectively extended by only regularly replacing the disassembly pad 109 within a certain service life. This will effectively solve the problem that the rock chips splashed back under strong injection pressure and jet velocity and the fracturing fluid reflected along the casing perforation will cause serious erosion to the injector and coiled tubing, and sometimes even puncture the coiled tubing, which will greatly shorten the service life of the coiled tubing and sandblaster, thereby greatly increasing the fracturing cost.

[0020] According to this specific embodiment, the diverter pipe 104 is fixedly connected to the outer shell 101 and is located at the lower interior of the outer shell 101. The diverter groove 105 is fixedly connected to the diverter pipe 104 and is located inside the diverter pipe 104. The main flow hole 106 is fixedly connected to the diverter pipe 104 and is located at the inner center of the diverter pipe 104. The main flow hole 106 is arranged on one side of the diverter groove 105. The diverter groove 105 in the diverter pipe 104 will cooperate with the main flow hole 106 to divert the fracturing fluid into two parts, wherein the diverter groove 105 will occupy 30% of the fracturing fluid, and the main flow hole 106 will occupy 70% of the fracturing fluid. The main flow hole 106 will effectively transfer the fracturing fluid to the pressurizing chamber 112 in the pressurizing nozzle 111 for pressurization, and then the pressurizing nozzle 111 will spray the fracturing fluid, thereby performing fracturing operations on the oil and gas field.

[0021] Among them, the mounting ring 102 is detachably connected to the outer shell 101 and is located on the upper outer surface of the outer shell 101. The positioning block 103 is fixedly connected to the mounting ring 102 and is located on the outer surface of the mounting ring 102. When hydraulic fracturing is performed on the oil and gas field, the staff will use the mounting ring 102 and the positioning block 103 to install the outer shell 101 to the specified position.

[0022] Secondly, the connecting block 108 is fixedly connected to the diverter pipe 104 and is located below the diverter pipe 104, and the connecting block 108 is arranged below the outer shell 101. The connecting plate 107 is detachably connected to the connecting block 108 and is located below the connecting block 108, and the connecting plate 107 is arranged below the outer shell 101.

[0023] At the same time, the disassembly pad 109 is detachably connected to the connecting plate 107 and is located below the connecting plate 107. The chamfer 110 is fixedly connected to the disassembly pad 109 and is located at the inner center of the disassembly pad 109. Since the pressurized nozzle 111 sprays the fracturing fluid in a conical shape, the chamfer 110 on the disassembly pad 109 will effectively reduce the impact force of the reflected fracturing fluid. Therefore, the overall service life can be effectively extended by only regularly replacing the disassembly pad 109 within a certain period of use.

[0024] In addition, the pressurizing nozzle 111 is fixedly connected to the connecting disk 107 and is located below the connecting disk 107, and the pressurizing nozzle 111 is arranged at the inner center of the disassembly pad 109. The pressurizing nozzle 111 is also arranged at the inner center of the chamfer 110. The pressurizing chamber 112 is fixedly connected to the pressurizing nozzle 111 and is located inside the pressurizing nozzle 111.

[0025] When the utility model is used to hydraulically fracture an oil and gas field, a worker will install the housing 101 to a designated position with the mounting ring 102 and the positioning block 103, and the fracturing fluid will enter the diverter pipe 104 through the housing 101, and the diverter groove 105 in the diverter pipe 104 will cooperate with the main flow hole 106 to divert the fracturing fluid into two parts, wherein the diverter groove 105 will occupy 30% of the fracturing fluid, and the main flow hole 106 will occupy 70% of the fracturing fluid, and the main flow hole 106 will effectively transmit the fracturing fluid to the pressurized chamber 112 in the pressurized nozzle 111 for pressurization, and then the pressurized nozzle 111 will spray the fracturing fluid, thereby performing a fracturing operation on the oil and gas field, and facing the fracturing fluid, The backwash flow will be intercepted by the jet flow ejected from the diverter groove 105, preventing the backwash flow from damaging the housing 101. Since the pressurized nozzle 111 sprays the fracturing fluid in a conical shape, the bevel chamfer 110 on the disassembly pad 109 will effectively reduce the impact force of the back-reflected fracturing fluid. Therefore, it is only necessary to regularly replace the disassembly pad 109 within a certain service life to effectively extend the overall service life. This will effectively solve the problem that the rock chips splashed back under strong jet pressure and jet speed and the fracturing fluid back-reflected along the casing perforation will cause serious erosion to the injector and the continuous oil pipe, and sometimes even puncture the continuous oil pipe, which greatly shortens the service life of the continuous oil pipe and the sandblaster, thereby greatly increasing the fracturing cost.

[0026] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.

Claims

1. An anti-erosion hydraulic fracturing injection device, comprising a housing, characterized in that: It also includes a diverter type anti-erosion component, which includes a diverter pipe, a diverter groove and a main flow hole. The diverter pipe is fixedly connected to the shell and is located at the inner bottom of the shell. The diverter groove is fixedly connected to the diverter pipe and is located inside the diverter pipe. The main flow hole is fixedly connected to the diverter pipe and is located at the inner center of the diverter pipe, and the main flow hole is arranged on one side of the diverter groove. The diverter type anti-erosion component also includes a mounting ring and a positioning block. The mounting ring is detachably connected to the shell and is located on the upper end outer surface of the shell. The positioning block is fixedly connected to the mounting ring and is located on the outer surface of the mounting ring. The diverter type anti-erosion component also includes a connecting plate and a connecting block. The connecting block is fixedly connected to the diverter pipe and is located below the diverter pipe, and the connecting block is arranged below the shell. The connecting plate is detachably connected to the connecting block and is located below the connecting block, and the connecting plate is arranged below the shell.

2. The anti-erosion hydraulic fracturing injection device according to claim 1, characterized in that: The diversion anti-erosion component also includes a disassembly pad and a chamfer. The disassembly pad is detachably connected to the connecting plate and is located below the connecting plate. The chamfer is fixedly connected to the disassembly pad and is located at the inner center of the disassembly pad.

3. The anti-erosion hydraulic fracturing injection device according to claim 2, characterized in that: The diversion-type anti-erosion component also includes a pressurized nozzle and a pressurized chamber. The pressurized nozzle is fixedly connected to the connecting plate and is located below the connecting plate. The pressurized nozzle is arranged at the internal center of the disassembly and assembly pad. The pressurized nozzle is also arranged at the internal center of the chamfer. The pressurized chamber is fixedly connected to the pressurized nozzle and is located inside the pressurized nozzle.

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