Horizontal well, directional well or vertical well large-displacement intelligent separated layer water injection process method

Abstract

The invention provides a horizontal well, directional well or vertical well large-displacement intelligent separated layer water injection process method. The horizontal well, directional well or vertical well large-displacement intelligent separated layer water injection process method comprises the steps that B, during water injection, an underground water quantity controller in a water distribution layer is pressed, and a valve sleeve is driven to move relative to a central pipe, so that a water outlet hole in the valve sleeve corresponds to an adjusting opening of the central pipe; C, when water injection is finished or water injection is not needed, the underground water quantity controller is decompressed, and the underground pressure pushes the valve sleeve to reset; D, the step B and the step C are repeated; and E, the pressure value of a water absorption layer outside the water distribution layer is monitored in real time; according to the wellhead oil pressure value and the water injection pressure value of each layer, the internal and external pressure difference value of the water outlet hole of the underground water quantity controller is monitored in real time, the internal and external pressure difference value, monitored in real time, of the water outlet hole is transmitted to the ground, the effective water outlet sectional area of each stage of water outlet hole and the actual water distribution quantity of each layer are calculated on the ground, and the actual injected water injection rate and the stratum pressure value are transmitted to a command center on the ground or electronic equipment of an oil field engineer through wireless transmission.

Description

technical field [0001] The present invention relates to the field of petroleum exploitation, in particular to a layered water injection process technology, in particular to a water injection well-free intelligent layered water injection process, especially a horizontal well, directional well or vertical well large-displacement intelligent layered water injection process method. Background technique [0002] At present, there are mainly four kinds of layered water injection technology in oil exploitation, namely: bridge type eccentric layered water injection technology, cable transmission downhole intelligent layered water injection technology, pressure wave code communication digital layered water injection technology, ground concentric two-three pipe layered water injection process. The main disadvantages of the above four layered water injection techniques are that one cannot be applied in horizontal wells and directional wells. Second, in addition to the long service li...

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Problems solved by technology

[0004] The present invention provides a large-displacement intelligent layered water injection process for horizontal wells, directional wells or vertical wells to solve the problem that the existing layered water injection process cannot be applied to horizontal wells and directional wells and has a short effective life

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