Injection-production regulation and control method for SAGD high-temperature electric submersible pump well group

Abstract

The invention provides an injection-production regulation and control method for an SAGD high-temperature electric submersible pump well group. The injection-production regulation and control method comprises the steps that S10, a regulation and control factor and a regulation and control index of the SAGD high-temperature electric submersible pump well group are determined; S20, a factor regulation and control limit of the regulation and control factor and an index regulation and control limit of the regulation and control index of the SAGD high-temperature electric submersible pump well group are determined; and S30, the regulation and control factor is regulated and controlled according to the factor regulation and control limit so as to enable the regulation and control index to be within the index regulation and control limit. According to the technical scheme of the injection-production regulation and control method for the SAGD high-temperature electric submersible pump well group, the problem that in the prior art, the performance of a high-efficiency area of a high-temperature electric submersible pump of an SAGD high-temperature electric submersible pump well group is difficult to play can be effectively solved.

Description

technical field [0001] The invention relates to the field of oil exploitation, in particular to an injection-production control method for a SAGD high-temperature electric submersible pump well group. Background technique [0002] Shallow and viscous ultra-heavy oil reservoirs in Xinjiang Oilfield are mainly exploited by SAGD technology. Two horizontal wells are vertically arranged at the bottom of the reservoir, the upper horizontal well injects steam, and the lower horizontal well produces. Rod pumps are mainly used for lifting, but high-temperature electric submersible pumps are used for lifting in some SAGD wells with poor well trajectory. [0003] The ultra-heavy oil reservoirs in Xinjiang have heterogeneous reservoirs, thin oil layers, and many interlayers. High-pressure SAGD operation is used, resulting in high temperature and low production of SAGD wells. However, the SAGD high temperature electric submersible pump has limitations such as high temperature limit and...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for controlling injection and production of SAGD high-temperature electric submersible pump well groups, so as to solve the problem that the high-efficiency zone performance of high-temperature electric submersible pumps in SAGD high-temperature electric submersible pump well groups is difficult to play in the prior art

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