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Water injection pipe

A water injection pipe and pipe body technology, applied in the field of water injection pipes, can solve the problems of low recovery rate and limited improvement of oil field recovery rate, and achieve the effects of increasing recovery rate, increasing water injection volume, and increasing permeability

Active Publication Date: 2021-01-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The local recovery factor will be high at the water injection channel, while the recovery factor far from the water injection channel is very low
Therefore, the current water injection technology plays a limited role in improving the recovery of oilfields.

Method used

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Experimental program
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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] figure 1 Schematically shows the structure of the water injection pipe 100 according to an embodiment of the present invention and its use state.

[0025] Such as figure 1 As shown, the water injection pipe 100 includes a substantially cylindrical pipe body 110 . The tubular body 110 extends from the surface 200 into the wellbore 300 . Corresponding flow holes are configured on the tube body 110 to discharge the fluid in the tube body 110 . Such as figure 1 The flow hole is aligned with the reservoir 400 as shown. As such, fluid may be directed toward the reservoir 400 as it drains. figure 1 Reference numeral 500 in shows the fluid injected from the flow holes to the reservoir 400 .

[0026] In addition, the water injection pipe 100 further includes a first vibrator 130 and a second vibrator 140 . The first vibrator 130 and the second vibrator 140 can respect...

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PUM

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Abstract

The invention relates to a water injection pipe which comprises a cylindrical pipe body, a circulation hole penetrating through the pipe body in the radial direction is formed in the side wall of thepipe body, the water injection pipe further comprises a first vibrator, and the first vibrator is configured to enable fluid leaving the water injection pipe from the circulation hole to have first vibration. The water injection pipe further comprises a second vibrator, the second vibrator is configured to enable fluid leaving the water injection pipe from the circulation hole to have second vibration, and the frequency of the first vibration is higher than that of the second vibration. By means of the water injection pipe, the recovery ratio of an oil field can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of downhole water injection to increase production, in particular to a water injection pipe. Background technique [0002] Low-permeability reservoirs are rich in reserves in my country, but their natural productivity is very low, so the rational development of low-permeability reservoirs has become the main work in the current oilfield technology research. Water injection development is one of the development methods commonly used in oilfields at home and abroad. By injecting water into the reservoir, the energy of the oil layer can be supplemented and the pressure of the oil layer can be maintained, so as to enhance the recovery of crude oil. [0003] Current water injection techniques typically inject constant high-pressure water into the formation. Due to the heterogeneity of the reservoir, long-term water injection generally forms water injection channels. The local recovery factor at the water injec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20E21B28/00
CPCE21B43/20E21B28/00
Inventor 王连生郑惠光柴国兴岑学齐王元庆
Owner CHINA PETROLEUM & CHEM CORP
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