double tube pump
A tube pump and pump body technology, applied in the field of petroleum machinery testing pump body, can solve the problems of long construction period, limitation, complicated process, etc., and achieve the effect of solving pump failure, ensuring working time, and requiring less well condition
Active Publication Date: 2020-12-01
冯旭辉
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Problems solved by technology
The disadvantage is that the process is cumbersome and the construction period is long.
There are some shortcomings in the above test methods, which have great limitations in field application.
Method used
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[0022] see figure 1 , figure 2 and image 3 , a double-tube pump provided in this embodiment, which includes a main pump body 1, a jet pump 2, an expansion slip assembly 3, a cone 4, a friction plate 5, a friction seat 6, a screen tube 7, a lower plug 8 and Change button 9, the upper side of the main pump body 1 is recessed to form an installation position for installing the jet pump 2, the jet pump 2 is located on the installation position, and the lower part of the main pump body 1 is provided with the The injection pipeline 11 connected to the injection pump 2, the pump casing 21 covering the injection pump 2 is arranged on the installation position, the lower plug 8 is arranged at the lower end of the injection pipeline 11, the main pump body The lower side wall of 1 is provided with a radial through hole connected with the injection pipeline 11, and the position of the screen tube 7 corresponding to the radial through hole is sleeved on the main pump body 1 to prevent ...
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The invention discloses a double-tube pump which comprises a main pump body, a jet pump, an expansion slip assembly, a cone, a plurality of friction plates, a friction seat, a sieve tube, a lower choke plug and a changeable buckle, wherein the jet pump is arranged on the upper part of the main pump body; the friction base and the expansion slip assembly are arranged on the main pump body at intervals; the friction plates are arranged on the friction seat; and the cone is arranged on a position above the expansion slip assembly. The double-tube pump is delicate and reasonable in structural design, is fewer in requirement on a well condition of an oil well, is suitable for production fluid profile test of various difficult trouble wells, and does not cause problems such as cable blocking and cable winding which frequently appear in an annulus test. Moreover, the double-tube pump has a sand-preventing effect, prevents large and small particles as well as mechanical purities in a well liquid from entering the pump, effectively solves pump faults caused by spray nozzle blockage, ensures working time of a down-hole pump, increases a pump-throwing once success rate of the jet pump, can meet production requirements, and also can provide a basis of timely knowing various dynamic data of a production well, scientifically performing oil-field dynamic management and regulating production technical parameters.
Description
technical field [0001] The invention relates to the technical field of petroleum machinery testing pump bodies, in particular to a double-tube pump. Background technique [0002] During oilfield production, it is necessary to monitor the production dynamics of the oilfield, such as measuring the dynamic and static parameters of the oil well such as pressure, liquid production profile, water absorption profile and layered production data, so as to be able to understand various dynamic data of the production well in time, Scientifically carry out oilfield dynamic management and production technical parameter adjustment to provide a basis. [0003] There are currently three main methods of monitoring: [0004] 1. The annulus test method has lower technical requirements, but higher requirements on well conditions, that is, the most basic test method is used to obtain test data; its disadvantage is that it can only be used in pumping wells with eccentric wellheads The applicati...
Claims
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IPC IPC(8): F04B23/08F04F5/10F04F5/46F04B47/00F04B53/22
CPCF04B23/08F04B47/00F04B47/005F04B53/22F04F5/10F04F5/46
Inventor 冯旭辉杜维钧郑继刚郭景会范志杰
Owner 冯旭辉