Drilling shock absorber for oil and gas production
A technology of oil and gas exploitation and shock absorber, which is applied in the direction of drilling equipment, drill pipe, drill pipe, etc. It can solve the problems of affecting work efficiency and service life, unsatisfactory shock absorption effect, inconvenient disassembly and maintenance, etc., and achieves shock absorption effect Good, reduce maintenance cost, facilitate disassembly and maintenance
Inactive Publication Date: 2018-11-20
GUANGDONG UNIV OF PETROCHEMICAL TECH
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Problems solved by technology
However, the shock absorption effect of the above-mentioned device is not ideal in actual application, and it is inconvenient to disassemble and maintain, and the maintenance cost is still high, which affects work efficiency and service life
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] see Figure 1~3 , in an embodiment of the present invention, a drilling shock absorber for oil and gas production, including an upper drive joint 1, a cylinder body 2, a center pipe 3, a shock absorbing mechanism 4, a lower drive shaft 5, a lower base 6 and a double female joint 7, the The upper driving joint 1 and the lower base 6 are connected together through the cylinder 2. The central tube 3 has a stepped structure, one end is an optical axis, and ...
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The invention discloses a drilling shock absorber for oil and gas production. The drilling shock absorber comprises an upper drive joint, a cylinder, a central pipe, a shock absorbing mechanism, a lower drive shaft, a lower base and a box-box joint, wherein the upper drive joint is integrally connected with the lower base through the cylinder thread; the central pipe is of a step structure, a smooth shaft is arranged at one end, a bulge cylinder is arranged at the other end, two end surfaces of the bulge cylinder are of a concave-convex curved surface structure, and the right side end surfaceof the bulge cylinder is connected with the left side end surface of the lower drive shaft; the lower drive shaft penetrates the lower base, the right end surface of the left side of the lower drive shaft makes contact with the left side end surface of the lower base, and the right side of the lower drive shaft is in threaded connection with the box-box joint; the left side end surface of the bulge cylinder is connected with the right side end surface of the upper drive joint through the shock absorbing mechanism arranged on the outer side of the central pipe in a sleeving manner; the shock absorbing mechanism comprises a first shock absorbing ring and a second shock absorbing ring. By integral arrangement of the shock absorbing mechanism, the drilling shock absorber has good shock absorbing effect and is convenient to disassemble, assemble and maintain, maintenance cost is reduced, working efficiency is increased, and service life is prolonged.
Description
technical field [0001] The invention relates to a shock absorber, in particular to a shock absorber for oil and gas production drilling. Background technique [0002] Existing shock absorbers are deformed mechanically (such as stacked springs) or hydraulically (such as oil cylinders) to produce a shock-absorbing effect. The shock absorption process will cause hysteresis in the action of the recoil force, and at the same time, the recoil effect cannot 100% contact the drill string system during use, which will easily lead to an increase in failure rate. [0003] During drilling operations, the drill bit frequently jumps due to the unevenness of the bottom of the well. If the drill bit is directly connected to the drill collar, the entire drill string will accelerate up and down together with the drill bit, resulting in strong vibration, destroying the optimal drilling conditions, and reducing the drill bit and drill collar. Tool life, or even damage drilling equipment. Ther...
Claims
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IPC IPC(8): E21B17/07
CPCE21B17/07
Inventor 王伟赵娅胡明孙同文刘哲王超
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH