Remote intelligent control system and method of separate injection well

Abstract

The invention discloses a remote intelligent control system and method of a separate injection well. According to the remote intelligent control system and method of the separate injection well, through applying a fluid wave code technology and a downhole flow intelligent regulation theory, automatic testing and automatic regulation of downhole layer flow rate, long term testing and storage of dynamic data, and remote wireless data transmission between the ground and downhole are realized; the single water injection function of an injection string is promoted to develop towards integration offunctions of water injection, information acquisition, test deploying and the like; the percent of pass of water injection is improved; and intelligent management of a water injection well is accelerated.

Description

technical field [0001] The invention belongs to the technical field of fine layered water injection in oil fields, and in particular relates to a remote intelligent control system and method for separate injection wells. Background technique [0002] The main target formations for development in the Ordos Basin are the Triassic Chang 1 to Chang 10 oil layers, which are typical low-permeability, low-pressure, and low-yield “three-low” oil reservoirs, with great potential for enhanced oil recovery. The characteristics of low-pressure and low-permeability reservoirs determine that comprehensive water injection is necessary to supplement formation energy development, but interlayer and intralayer heterogeneity is strong, and the production degree of water flooding reserves is low, which limits the development effect of conventional water injection, and fine layered water injection technology is required Research and Application. Since 2013, Changqing Oilfield has closely focuse...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a remote intelligent control system and method for separate injection wells to overcome the complexity of the existing layered flow measurement and adjustment process, the low success rate, the large impact of water injection quality and wellbore conditions, and the test workload of separate injection wells. Large, high on-site construction costs, on-site operation at the wellhead, and inability to real-time long-term monitoring cannot meet the requirements of fine water injection technology in oil fields, and the workload of on-site management is large. The invention improves the pass rate of water injection, accelerates intelligent management of water injection wells, and leads The development direction of fine layered water injection, and the technical support for stable and increased production of oilfields

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