Separate layer water injection process pipe column device for oil field

Abstract

The invention discloses a separate layer water injection process pipe column device for an oil field. The device comprises a casing pipe, an in-pipe integrated cable continuous pipe, an underground injection allocation tool string and a ground control device. The in-pipe integrated cable continuous pipe comprises an oil pipe and a cable integrated on the inner wall of the oil pipe. The undergroundinjection allocation tool string comprises multiple layers of cabled intelligent water distributors and multiple layers of cable passing packers. The cabled intelligent water distributors and the cable passing packers are sequentially connected at intervals, a screen pipe screwed plug is arranged at the bottom of the nth layer of cabled intelligent water distributors, a conversion connector is arranged at the upper end of the first layer of the cable passing packers, and the underground injection allocation tool string is connected with the in-pipe integrated cable continuous pipe through theconversion connector; and the ground control device is electrically connected with the cabled intelligent water distributors through a cable in the in-pipe integrated cable continuous pipe. Accordingto the device, accurate and convenient adjustment of the flow of each layer of a water injection well is completed under the conditions that a pipe column is not moved and no construction is needed,and then remote testing and allocation of a separate injection well at a water injection station and real-time remote transmission of data such as flow pressure are achieved.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a pipe string device for layered water injection in an oil field. Background technique [0002] In order to solve the problems of highly deviated wells, deep wells, produced water re-injection wells, and horizontal wells in layered water injection and test allocation, through the research of separate injection technology and the development of key tools, the digital level of water injection will be further improved, and the separate injection wells in the water injection station will be realized. Remote test deployment and real-time remote transmission of data such as flow and pressure. In order to save the cable test and deployment process and improve the digital level of water injection, realize the single-layer flow test and deployment of separate injection wells at the water injection station to realize flow, pressure, temperature, and isolation. Re...

AI Technical Summary

Problems solved by technology

[0004] In order to meet the actual process requirements of water flooding technology in the ultra-high water-cut development period and solve the problem of the new intelligent injection technology and supporting tools for water injection wells in the ultra-high water-cut period, the invention provides a pipe string device for oilfield layered water injection technology. Accurate and convenient adjustment of the flow rate of each layer of the water injection well can be completed without moving the pipe string and without any construction, and then realize the remote test deployment of the separate injection well at the water injection station and the real-time remote transmission of data such as flow pressure

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