Impact-resistant thinning leak-stopping agent and its application and gel material and its application

CN117701260BActive Publication Date: 2026-06-12CHINA PETROLEUM & CHEMICAL CORP +1
View PDF 3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2022-09-06
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing plugging agents do not perform well in terms of resistance to erosion, high temperature, and compressive strength, and are difficult to effectively stop leakage in formations containing flowing water.

⚗Method used

A plugging agent composed of polyacrylamide, dopamine, metal crosslinking agent, monomer, initiator and allyl crosslinking agent is used to generate a weak gel through crosslinking reaction, which resides around the leak layer and is crosslinked and cured under the temperature and pressure environment of the formation to form a high-strength gel material.

🎯Benefits of technology

It improves the retention rate and compressive strength of the sealing agent in water flow, effectively blocking leakage in formations containing flowing water, and is suitable for water-bearing formations below 150℃.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN117701260B_ABST
    Figure CN117701260B_ABST
Patent Text Reader

Abstract

The application relates to the field of oil drilling, and discloses an anti-impact and dilution plugging agent and application thereof and a gel material and application thereof. The plugging agent comprises the following components: polyacrylamide, dopamine, a metal crosslinking agent, a monomer shown in formula (I), an initiator, an allyl crosslinking agent and water, wherein R1 and R2 are each independently hydrogen or a C1-C9 straight-chain or branched-chain alkyl. The gel material is obtained by crosslinking polymerization of the plugging agent. Compared with existing plugging agents, the plugging agent has significant improvement in aspects of water impact dilution resistance, water erosion resistance and high-temperature resistance. The gel material can be applied to an aqueous formation below 150 DEG C, in particular a flow water-containing formation.
Need to check novelty before this filing date? Find Prior Art