Ground control device for water injection well fluid fluctuation code communication signals

Abstract

The invention discloses a ground control device for water injection well fluid fluctuation code communication signals, which comprises a fluid fluctuation code communication ground main control deviceand a matched pressure reducing device, wherein the fluid fluctuation code communication ground main control device is arranged on a water injection pipeline for regulating and controlling the pressure of the water injection pipeline; and the matched pressure reducing device is arranged on the water injection pipeline between the fluid fluctuation code communication ground main control device anda water injection wellhead for receiving an instruction sent by the fluid fluctuation code communication ground main control device for pressure reduction. The device can realize pressure control onwater inflow and water injection in the water injection system, and realize fine water distribution. Through enabling the fluid fluctuation code communication ground main control device to send an instruction and under together effects of the matched pressure reducing device, a fluid fluctuation code is built, the water injection well shaft pressure is changed, the fluid fluctuation code is built,and thus, the control instruction is converted to the fluid fluctuation code, precise control on the water injection pressure is together realized, and the purpose of fine water distribution is achieved.

Description

technical field [0001] The invention belongs to the technical field of oil field water injection, and relates to a ground control device for a water injection well fluid wave code communication signal. Background technique [0002] Oil layered water injection technology mainly has three directions. The three-generation layered water injection technology represented by fixed type, steel wire fishing, and cable monitoring and adjustment has reached the international leading level. It played an important role. [0003] With the deepening of oilfield development, the number of separate injection wells has increased year by year, the workload of measurement and adjustment is heavy, and the cost of supporting measurement and adjustment has increased year by year; the frequent occurrence of obstructions in measurement and adjustment has resulted in high costs for later detection of strings and pressure operations; pressure fluctuations, formation Influenced by factors such as chan...

AI Technical Summary

Problems solved by technology

[0005] With the continuous deepening of fine oilfield development, water flooding development is faced with more complex injection-production relationship, unbalanced production of oil layers, and prominent contradictions between layers, resulting in serious invalid water circulation, rapid rise of water cut, and low degree of reserve production

Existing separate injection technology cannot better adapt to the development needs of fine layered water flooding, and cannot realize long-term continuous monitoring of layered parameters, resulting in insufficient basis for the preparation of separate injection schemes, and cannot meet the requirements of fine water distribution; point-shaped discontinuous measurement and adjustment are used , unable to keep the qualified rate of water injection at a high level for a long time

Images