Boosting water injector for oil field

A technology of oil field and pressurized cylinder, which is applied in the direction of production fluid, wellbore/well parts, earthwork drilling and production, etc., to achieve broad development prospects, reduce the requirement for installation piston deviation, and improve the service life

Inactive Publication Date: 2005-08-03
姚庆余
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects of the existing pressurized water injection device, and provide a method for increasing water injection by using the pressure of the water inlet itself and pressurizing the circulating oil (or other liquid medium) through the pressurized cylinder of the water injection device. The piston of the pressure and booster cylinder adopts a spherical plug body self-positioning anti-deflection piston structure, the piston of the booster cylinder uses a piston touch-sensitive reversing mechanism for reversing, and the circulating oil valve group adopts a ball valve structure oil field pressurized water injection device

Method used

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  • Boosting water injector for oil field
  • Boosting water injector for oil field
  • Boosting water injector for oil field

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Effect test

Embodiment 1

[0018] Embodiment 1, using the present invention to use the pressure of the water itself and the pressure of the circulating oil to pressurize the water injection through the booster cylinder of the water injection device, the piston of the booster cylinder adopts a spherical plug body self-positioning anti-deflection piston structure, and the piston The reversing adopts the piston touch-sensitive reversing mechanism and the oil field pressurized water injection device adopts the ball valve structure of the circulating oil oil valve group. The incoming water pressure is 11MPa, and the pressurized water injection device in the oil field injects water into the formation, and the outlet pressure of the high-pressure water injection is 26MPa, which can continuously inject water for 5 months. The water injection work meets the water injection requirements. The energy is greatly saved, the cost is reduced, the water injection operation is convenient, and it is easy to popularize and...

Embodiment 2

[0019] Embodiment 2, using the present invention to use the pressure of the water inlet itself and the pressure of the circulating oil to pressurize the water injection through the booster cylinder of the water injection device, the piston of the booster cylinder adopts an oval plug body self-positioning and anti-deflection piston structure, and the piston of the booster cylinder The reversing adopts the piston touch-sensitive reversing mechanism and the oil field pressurized water injection device adopts the ball valve structure of the circulating oil oil valve group. The incoming water pressure is 15MPa, and the pressurized water injection device in the oil field injects water into the formation, and the outlet pressure of the high-pressure water injection is 27MPa, which can continuously inject water for 4 months without failure.

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PUM

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Abstract

A pressurizing and water-injecting apparatus for oil field is composed of the pressurizing cylinder divided into 4 cavities A, B, C and D by piston and connecting rod, and the self-circulating hydraulic station which consists of oil valve group connected to said cavities A and D, water valve group connected to said cavities B and C, oil pump, oil tank, energy accumulator, filter, electromagnetic change valve, and cooler. They are connected with each other on the basis of the invented function.

Description

technical field [0001] The invention relates to a liquid variable displacement machine, in particular to an oil field pressurized water injection device suitable for use in oil fields. Background technique [0002] At present, the pressurized water injection device (ZL98201063X) used in the oil field is equipped with a high-pressure water outlet, and another water outlet is used to discharge the water in the form of backwater. Due to the pollution of the backwater, it cannot be directly discharged into the ground, and only special backwater can be laid. The pipeline discharges, and the backwater needs to be treated, which greatly increases the cost of backwater discharge and treatment, and affects the use in the oil field. The existing pressurized water injection devices all use integral pistons, but since the pressurized cylinder is composed of two sections, the assembly process is difficult to ensure the coaxiality between the two-stage pressurized ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20
Inventor 姚庆余
Owner 姚庆余
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