Multifunctional water control screen pipe

By setting up a hole in the short flow control section of the water control screen and assembling soluble delay components, the problem of the existing water control screen pipe having a single function and the need for external tools for seating and unsealing is solved, and a multifunctional and automated seating and unsealing effect is achieved.

CN119712020APending Publication Date: 2025-03-28PETROCHINA CO LTD
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Patent Information

Application Number
CN202311251415.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-26
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing water control screen pipe has a single function, which cannot achieve the acid-resolving and blocking function of the formation, and the seating and unsealing require the assistance of external tools.

Method used

A multifunctional water-controlled screen pipe is designed. By setting a channel in the short flow control section and assembling soluble retardant components in the channel, a barrier is formed to cooperate with the packer to press and seal, and dissolve it in the well fluid after soaking, and reconnecting the internal and external flow paths.

Benefits of technology

It realizes the versatility of the water-controlled screen pipe, can be used to press and seal with the packer, and dissolve in the well fluid to reconnect the flow path, solving the problem of single functions and external tools required for seating and unsealing.

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Abstract

The invention discloses a multifunctional water control screen pipe, which belongs to the technical field of oil and gas well oil extraction and well completion, and comprises a base pipe component, an upper joint assembled at one end of the base pipe component, a flow control short section assembled at the other end of the base pipe component and a plurality of hole channels formed in the flow control short section, the duct is configured as a part of the working flow path; a delay member; and a lower joint. A hole channel is formed in a flow control short section and forms a part of a working flow path in a water control screen pipe, a delay component made of a soluble material is assembled in the hole channel, and when the delay component is in an undissolved state, a barrier can be formed in the hole channel so as to prevent well fluid from flowing into an internal section of the water control screen pipe; when the water control screen pipe enters a well, the packer is matched with a matched packer (such as a compression type packer or an expansion type packer) to conduct pressing and setting when the water control screen pipe enters the well, and the packer is dissolved after set time, so that a flow path between the external section and the internal section of the water control screen pipe is communicated again.
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