Sand-preventing gas-preventing integrated oil production device

Abstract

A sand-preventing gas-preventing integrated oil production device comprises an oil pump and a gas anchor. The oil pump is provided with an outer tube and a plunger, the plunger is arranged in the outer tube in a penetrating mode, and the lower end of the outer tube is connected with a two-way coupling; the plunger is sleeved with a pump cylinder, the upper end of the plunger is connected with an upper traveling valve, the lower end of the plunger is connected with a lower traveling valve, the lower end of the pump cylinder is connected with a plurality of fixing valves, and the fixing valves are communicated with a center hole of the two-way coupling oppositely; the gas anchor is provided with an outer cylinder, an inner cylinder and a center tube, the upper end of the outer cylinder is provided with a liquid inlet hole, a screen is arranged outside the liquid inlet hole, the upper end of the outer cylinder is connected with a straightening ring, and the lower end of the outer cylinder is connected with a reducing coupling; the inner cylinder is located in the outer cylinder, the upper end of the inner cylinder is connected with the two-way coupling, and the lower end of the inner cylinder is connected with a two-way joint; the center tube is located in the inner cylinder, the upper end of the center tube is communicated with the center hole of the two-way coupling oppositely, and the lower end of the center tube is communicated with an oil inlet channel of the two-way joint oppositely. According to the sand-preventing gas-preventing integrated oil production device, in the oil production process, sand-preventing gas-preventing integration can be achieved, and oilfield exploitation benefits are improved.

Description

technical field [0001] The invention relates to an oil recovery device, in particular to an integrated oil recovery device for sand and gas prevention in the technical field of oil recovery. Background technique [0002] In oilfield development, sand production in oil wells is a major problem in oilfield exploitation. There are many blocks in Liaohe Oilfield with serious sand production, problems such as sand buried pump plunger, sand stuck pump, pump leakage, etc., resulting in short pump inspection cycle, which seriously affects the normal production of pumping wells, and even some oil wells cannot be exploited due to severe sand production. At present, measures such as special sand control pumps and sand control screens are mainly used. [0003] With the increase of the production degree of oil wells, the formation pressure of sand-producing oil wells decreases, and the dissolved gas in crude oil is precipitated prematurely. There are also a large number of sand-producin...

AI Technical Summary

Problems solved by technology

[0004] In existing oil wells, there are problems of sand production and high gas-oil ratio at the same time, which brings great difficulties to oil production with rod pumps

This type of oil well needs both sand control and gas control, but the current sand control oil well pump cannot be used in conjunction with the gas anchor, resulting in this type of oil well can only prevent sand but not gas, or only can prevent gas but not sand, affecting the normal production of the oil well

Images