Injection and production dual-purpose pipe string structure

A pipe string and dual-purpose technology, which is applied in the field of injection-production dual-purpose pipe string structure, can solve the problems of heavy weight, inconvenient transportation, plug length, etc., and achieve the effects of reducing weight, improving flexibility of use, and shortening length

Active Publication Date: 2020-03-24
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dual-purpose injection-production string structure to solve the problem of long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] In the prior art, the injection-production dual-purpose tubular pump adopts such as Figure 7 In the shown long plunger injection-production dual-purpose pump, the gas injection port 24' of the pump is directly arranged at the position corresponding to the housing 15' and the plunger 20', and the upper end of the plunger 20' passes through the oil outlet joint 16' and the sucker rod Connected, when the sucker rod reciprocates, the floating valve ball 17' blocks or avoids the pump suction port 23' under the action of the liquid pressure difference, so that the oil passes through the pump suction port 23' and is pumped into the sucker rod in. During the gas injection operation, the worker needs to push the plunger 20' down to avoid the pump gas injection port 24'. Due to the long length, heavy weight, and high processing difficulty of the plunger 20' of the conventional injection-production dual-purpose tubular pump, the cost is high, it is difficult to transport, and it is d

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PUM

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Abstract

The invention provides an injection and production dual-purpose pipe string structure which includes a tubing pump, an air injection valve and a first sucker rod. The tubing pump includes a shell anda plunger piston, and the plunger piston is movably arranged in the shell to suck fluid; the air injection valve includes a first cylinder body and a sealing structure, the first cylinder body is detachably arranged on the shell, the first cylinder body is provided with a first air injection hole, the sealing structure is movably arranged in the first cylinder body, and the sealing structure has aclosed position where the first air injection hole is blocked and an open position where the first air injection hole is avoided; and the first sucker rod penetrates into the first cylinder body andis connected to the plunger piston, the first sucker rod can drive the plunger piston to move in the shell, and meanwhile, the first sucker rod can drive the sealing structure to move between the closed position and the open position. The injection and production dual-purpose pipe string structure in the technical scheme can effectively solve the problem that a plunger piston of a long injection and production dual-purpose pipe string in the prior art is long, the weight is large, and consequently transportation is not conveniently achieved.

Description

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Claims

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Application Information

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Owner PETROCHINA CO LTD
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