Eccentric wear prevention wear-resisting centering device for pumping rod
A technology of centralizers and sucker rods, which is applied in the direction of drill pipes, drilling equipment, earthwork drilling and production, etc. It can solve the problems of affecting the production process of oil recovery, increasing the cost of oil recovery, and short service life, so as to achieve simple and convenient replacement operation and reduce oil recovery. cost and long service life
Inactive Publication Date: 2015-05-13
QINGDAO OUSHENG LIGHTING CO LTD
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Problems solved by technology
[0002] In the process of oil production in the oil field, the sucker rod in the oil production equipment often has eccentric wear during the working process. The existing solution is to install a centralizer on the sucker rod, but there are still some disadvantages in the existing centralizer structure. The main disadvantages are its poor wear resistance, short service life and difficulty in replacement, which increases the cost of oil production and affects the process of oil production.
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[0012] Attached below figure 1 The anti-eccentric wear-resistant and wear-resistant centralizer for sucker rods of the present invention will be further described.
[0013] The anti-eccentric wear-resistant centralizer of the sucker rod of the present invention is composed of a centralizer main body 1 and a sucker rod 2. The centralizer main body 1 is sleeve-shaped and has a thickness of 5-10 cm. On the shaft body of the rod 2, the main body of the centralizer 1 is composed of two axially symmetrical slips assembled, and the assembled butt joint of the two slips is provided with an interlocking part 3 for mutual use, that is, on the outside of the end of a slip. The surface is provided with a groove, and the groove is provided with a convex rib, and the inner surface of the other slip is provided with a groove, and a concave hole is arranged in the groove, and the concave hole is fixed with the convex rib.
[0014] A set of centrally symmetrical wide spiral bosses 4 and a set...
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The invention relates to the technical field of oil production equipment and provides an eccentric wear prevention wear-resisting centering device for a pumping rod. The eccentric wear prevention wear-resisting centering device is composed of a centering device body and the pumping rod, wherein the centering device body is in a sleeve shape and is arranged on a rod body of the pumping rod in a sleeving mode; the centering device body is formed by splicing two parts in axial symmetry, and insertion parts matched with each other for use are arranged at the splicing butt joint between the two parts; the periphery of the centering device body is provided with a set of centrosymmetric wide spiral bosses and a set of centrosymmetric narrow spiral bosses, and limiting rings are fixed to the pumping rod and located at the two ends of the centering device body. The eccentric wear prevention wear-resisting centering device for the pumping rod is reasonable and applicable in structural design, low in manufacturing cost, high in wear resistance, long in service life and easy and convenient to replace and operate, and lowers the oil production cost.
Description
technical field [0001] The invention relates to the technical field of oil production equipment, in particular to a sucker rod anti-eccentric wear-resistant centralizer. Background technique [0002] In the process of oil production in the oil field, the sucker rod in the oil production equipment often has eccentric wear during the working process. The existing solution is to install a centralizer on the sucker rod, but there are still some disadvantages in the existing centralizer structure. The main disadvantages are its poor wear resistance, short service life and difficulty in replacement, which increases the cost of oil recovery and affects the process of oil recovery. Contents of the invention [0003] The present invention aims to provide a sucker rod anti-eccentric wear-resistant centralizer aiming at the deficiencies in the background technology. [0004] The anti-eccentric wear-resistant centralizer of the sucker rod of the present invention is composed of a mai...
Claims
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IPC IPC(8): E21B17/10
CPCE21B17/1071E21B17/1085
Inventor 刘义
Owner QINGDAO OUSHENG LIGHTING CO LTD