Turbine-driven thermal mass spraying and melting diversion wax scraping device
A diversion-scraping, spray-melting technology, used in wellbore/well components, earth-moving drilling, cleaning tools, etc., can solve the problems of high hardness, blocking the wellbore, and the wax block easily sinking to the bottom of the wellbore, etc. Achieve the effect of reducing torque, preventing eccentric wear downhole and improving energy efficiency
Active Publication Date: 2022-05-13
WENZHOU UNIV +1
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Problems solved by technology
But its disadvantages are equally obvious. Due to the narrow space at the bottom of the well and the limitations of mechanical equipment, it is often impossible to do anything about the high hardness area or the position where the tubing is blocked.
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[0020] Below in conjunction with accompanying drawing, the present invention will be further described:
[0021] Such as figure 1 As shown, this turbine-driven thermal mass spraying diversion wax scraping device is a turbine diversion wax scraper device for rodless oil production wells, which includes: steel wire rope 1, sliding guide rail 3, sealing assembly, drainage assembly, turbine Group 10 and the wax removing assembly that can rotate with hollow rod 16. The drainage assembly is composed of a drainage tube 2, a drainage head 8 and a drainage hole 11. The drainage tube 2 is connected to the sliding guide rail 3. The drainage tube 2 can move axially along the direction of the oil pipe 9 on the sliding guide rail 3, which can effectively prevent deviation. The grinding phenomenon and the reverse phenomenon occur when the device suddenly shuts down. The lower end of the drainage tube 2 is a turbine chamber, and the drainage head 8 is located at the upper opening of the turb...
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The invention relates to a turbine-driven thermal mass spraying and melting diversion wax scraping device, which includes a steel wire rope, a sliding guide rail, a sealing component, a drainage component, a turbine group, a hollow rod, and a rotary wax removal component. One end of the steel wire rope is connected to the top of the drainage tube , the other end is connected to the winch; the lower end of the diversion head is connected to the hollow rod, the turbine group is set in the turbine chamber and surrounds the hollow rod, the hollow rod communicates with the turbine chamber through the diversion hole, and the diversion hole is located under the turbine group; the wax removal component Including diversion wax scraping impeller, thermal mass nozzle, wax scraping drill bit, diversion wax scraping impeller and thermal mass nozzle are arranged on the hollow rod at intervals, and the lower end of the hollow rod is provided with wax scraping drill bit; the high temperature and high pressure fluid drives the turbine and enters the hollow rod , and then speed up the fluid through the nozzle, and spray the deposited wax layer on the wall of the tubing, which can heat melt and reduce the hardness of the paraffin. The wax scraping device can be lifted and lowered repeatedly to remove the wax safely and efficiently. The removed wax chips will be carried by the oil flow and flow into the surface pipeline through the wellhead.
Description
technical field [0001] The invention relates to the technical field of wax-removing and preventing tools in rodless pump oil well shafts in the petroleum industry, in particular to a turbine-driven thermal mass spray-melting diversion wax-scraping device. Background technique [0002] During the production of waxy crude oil, the temperature of the crude oil decreases due to the escape and expansion of dissolved gas. When the temperature is lower than the wax precipitation point, wax crystals will precipitate and continuously deposit in the formation, tubing, and downhole equipment. The deposition of wax in the formation will reduce the permeability of the formation, reduce the oil recovery rate, and even block the oil production layer; the deposition of wax in the oil pipe will increase the viscosity of crude oil, increase the resistance, reduce the production capacity of the oil well, increase the operating cost, and even Blockage of ground lines. Different from rod produc...
Claims
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IPC IPC(8): E21B37/02
CPCE21B37/02
Inventor 冯子明孙瑞赵岩郭晨浩马擎洋刘岂晨段维博
Owner WENZHOU UNIV