Upstream injection sucker-rod pump same well mining and injecting device

A technology of production and injection in the same well with a rod pump, which is applied to the components of the pumping device for elastic fluids, pumps with flexible working elements, pumps, etc. rod bending, injection difficulties, etc., to achieve accurate and effective production-injection flow ratio, control the production-injection flow ratio, and avoid malfunctions

Active Publication Date: 2018-02-13
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

There are two problems in the above implementation methods. One is that the downward injection method is difficult to inject in the high-pressure reinjection layer, which may easily cause problems...

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  • Upstream injection sucker-rod pump same well mining and injecting device

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Embodiment Construction

[0027] The detailed description and technical content of the present invention are described below with the accompanying drawings, but the accompanying drawings are only provided for reference and description, and are not intended to limit the present invention.

[0028] as attached figure 1 As shown, the moving assembly M of the swabbing part includes an upper plunger 2, a middle plunger 5, a lower plunger 8, and a one-way check valve 9 that opens to the inside of the moving assembly; the upper plunger 2, the middle plunger 5, the lower plunger The plungers 8 are connected in sequence, and the inner spaces communicate to form a cavity 21, and the check valve 9 is arranged at a proper position inside the moving assembly. A hole C is opened on the top of the moving assembly, and the hole C connects the plunger cavity 21 inside the moving assembly with the inner space D of the working string in the upper part of the whole device. In this embodiment, the outer diameter specifica...

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Abstract

The invention discloses an upstream injection sucker-rod pump same well mining and injecting device. The upstream injection sucker-rod pump same well mining and injecting device comprises two following components including a separation component and a swabbing component, wherein by means of the separation component, a stock solution generated in a working well can be separated into different separation products with main components being different in performance underground; and by means of the swabbing component, two functions can be achieved in the upstream process of a movement assembly contained in the swabbing component, one function is that power needed by stock solution separation and a temporary storage space for the separation products are provided for the separation component, and the other function is that the different separation products generated in the previous working circulation are pressurized at the same time. The upstream injection sucker-rod pump same well mining and injecting device is used for a sucker-rod pump mining well, the components of the products in the well are separated underground, when a working bolt support moves upwards, the separation product with relatively large expected component content is mined, the separation product with relatively large unexpected component content is synchronously reinjected, the mining and injection actions can acquire sufficient power through ground hoisting equipment, and the mining and injecting flow ratio can be directly and effectively controlled through a working cavity volume ratio inside the device.

Description

technical field [0001] The invention relates to oil exploitation technology, in particular to an upward injection rod pump simultaneous well production and injection device. Background technique [0002] As oilfield development enters the middle and later stages, there are more and more oil wells with high water cut. High water cut results in higher energy consumption for fluid production in oil wells, higher surface sewage treatment volume, higher treatment costs, shorter economic production life of oil wells, and more shut-down wells. In order to maintain oil production and alleviate the above problems, technicians in the industry have proposed a production process in which oil and water are separated downhole and the produced water is reinjected into the same well in selective layers. For rod pump production wells that dominate the production wells, the existing oil-water separation and simultaneous well production and injection technologies mainly have the following two...

Claims

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Application Information

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IPC IPC(8): F04B47/00F04B53/14E21B43/38
Inventor 王增林古光明杜玮暄张雷罗燕周娜张方圆高综启肖萍孙衍东张俊清朱泽军
Owner CHINA PETROLEUM & CHEM CORP
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