Self-advancing type high-pressure jet sprayer for radial horizontal well drilling
A high-pressure jet and self-propelled technology, which is applied in the direction of drilling with liquid/gas jet, can solve the problems of high cost and poor economy of sidetracking horizontal well technology, and achieve the effect of simple structure, reliable operation and broad application prospects
Active Publication Date: 2013-10-30
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to propose a radial horizontal well technology using high-pressure hydraulic jet as the main driving force for rock breaking in order to solve the problems of high cost and poor economy of the existing sidetracking horizontal well technology, especially a radial horizontal well Self-propelled high-pressure jet nozzle for drilling
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[0012] according to Figure 1~Figure 4 As shown, a self-propelled high-pressure jet nozzle for radial and horizontal well drilling mainly includes a housing 1, a turbine rotor 2, an upper wear-resistant steel ball 13, a lower wear-resistant steel ball 3, and a baffle 4. Its technical features are: the shell 1 is processed with a top 8, 3~6 forward nozzles 6 with a diameter of 3~7mm and 3~6 backward nozzles 7 with a diameter of 3~7mm, of which the forward nozzle 6 The number is less than the number of backward nozzles 7, the front and rear nozzles have the same diameter, and the outer surface of the casing 1 is welded with hard alloy to improve wear resistance; the inside of the casing 1 is equipped with a turbine rotor 2, and the upper end of the turbine rotor 2 is processed with a Spherical groove 14, the lower end is uniformly processed with turbine blade 9 and a spherical groove 10 along the circumference, its body is a semi-cylindrical structure, positioned by two upper an...
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The invention relates to a self-advancing type high-pressure jet sprayer for radial horizontal well drilling, which mainly comprises a shell, a turbine rotor, wear-resistant steel balls, a baffle plate and the like. The self-advancing type high-pressure jet sprayer is technically characterized in that a tip, a forward spray nozzle and a backward spray nozzle are processed on the shell, hard alloy is welded on the outer surface of the shell, the turbine rotor is mounted in the shell, spherical grooves are processed at the upper end and the lower end of the turbine rotor, the turbine rotor is positioned via the upper wear-resistant steel ball and the lower wear-resistant steel ball, the upper wear-resistant steel ball is placed between the inside of the shell and the corresponding spherical groove of the turbine rotor, the lower wear-resistant steel ball is placed between the turbine rotor and a spherical groove on the baffle plate, the shell is connected with the baffle plate in a threaded manner, and four to six water injection holes are uniformly distributed on the baffle plate. The self-advancing type high-pressure jet sprayer is simple in structure and reliable in work, and can be widely applied to radial horizontal well drilling operation.
Description
technical field [0001] The invention relates to a drilling tool that uses high-pressure jets to efficiently and quickly break rocks, in particular to a self-propelled high-pressure jet nozzle for drilling radial and horizontal wells. Background technique [0002] With the continuous deepening of oil exploration and development, most of the domestic oil fields have entered the middle and late stages of production, the production capacity of oil wells has declined, the extraction is difficult, the recovery rate is low, and the development cost is high. At present, the conventional sidetracking horizontal well technology is adopted in the development of old oilfields: first, the windowing tool such as a milling cone is guided by the skewer to open a window on the side of the casing, and then the sidetracking drilling tool such as a single cone bit or a PDC bit is used to pass through the sidetracking drilling tool. Window mechanically drilled horizontal wells to restore the pro...
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IPC IPC(8): E21B7/18
Inventor 祝效华赫连长林李佳南
Owner SOUTHWEST PETROLEUM UNIV