Variable-density screen pipe water control device applied to deepwater gas reservoir

Abstract

The invention relates to a variable-density screen pipe water control device applied to a deepwater gas reservoir, which comprises the following components: an L-shaped pipe comprising a vertical section and a horizontal section, the vertical section of the L-shaped pipe is connected with a hanger below an intermediate casing, and the horizontal section of the L-shaped pipe is connected with a plurality of variable-density screen pipe water control units connected in series; the variable-density screen pipe water control unit comprises external pipe packers and single-flow water control screen pipes which are sequentially and alternately arranged, and the single-flow water control screen pipe located at the tail end is connected with a guiding shoe. By adopting the hole density difference of different screen pipes, the seepage velocity of each production layer can be more flexibly and accurately controlled, the production pressure difference of each horizontal well section is balanced, balanced lifting of bottom water of each layer section is ensured, bottom water onrush is effectively inhibited, the development effect of the horizontal well is improved, and the recovery efficiency of an oil reservoir is improved.

Description

technical field [0001] The invention relates to a variable density screen water control device applied to deep-water gas reservoirs, and belongs to the technical field of water control and production increase in gas field development. Background technique [0002] With the rapid development of the global economy, the demand for oil in all walks of life continues to grow. However, the international crude oil price has been increasing, bringing huge development potential to the oil industry, but also posing severe challenges to oil and gas exploration and development. In order to expand crude oil production and increase oil supply, it is necessary to strengthen the exploration of offshore oil and gas resources, promote the discovery and exploitation of major oil and gas resources, and put forward new requirements for offshore oil and gas resource development technologies. Nevertheless, my country has insufficient experience in water control of deep-water gas reservoirs, and h...

AI Technical Summary

Problems solved by technology

As the production time prolongs, water intrusion is an inevitable result. Once water intrusion occurs during the test period, it will inevitably have a serious impact on production, resulting in reduced production or even shutdown.

Existing methods are not effective enough for deep-water gas reservoirs, so it is necessary to develop a new water control process for application in deep-water gas reservoirs

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