一种产物具有粘性的微生物自修复剂及其应用

    公开(公告)号:WO2022236998A1

    公开(公告)日:2022-11-17

    申请号:PCT/CN2021/113377

    申请日:2021-08-19

    Applicant: 东南大学

    Abstract: 一种产物具有粘性的微生物自修复剂及其应用,该方法能提升修复产物的粘性,进而提升修复效果。该微生物自修复剂,包括产絮凝物质的微生物菌剂和含糖物质。该应用方法包括将微生物自修复剂加入混凝土中,每立方米混凝土中微生物自修复剂的加入量为3~20千克。与普通微生物自修复剂相比,该方法诱导的修复产物能紧密堆积形成粘结性更好、尺寸更大的修复产物;提升了修复产物的稳定性,减少修复产物流失,进而提高混凝土的耐久性。

    COMBINATION OF FLUID LOSS CONTROL ADDITIVE AND LOST CIRCULATION MATERIALS TO CONTROL LOSSES IN FORMATION

    公开(公告)号:WO2021061168A1

    公开(公告)日:2021-04-01

    申请号:PCT/US2019/053856

    申请日:2019-09-30

    Abstract: The present disclosure provides methods, compositions, and systems embodying cement compositions and the synergistic effect of lost circulation materials (LCMs) and fluid loss control additives (FLCAs) thereupon for cementing subterranean zones. A method of subterranean well cementing, comprising providing a cement composition comprising a hydraulic cement, a first FLCA, an LCM, and water, wherein the first FLCA comprises a water-soluble polymer with repeating units comprising a 5- to 6-membered cyclic amide; introducing the cement composition into a wellbore penetrating a subterranean formation, wherein inclusion of the first FLCA and the LCM in the cement composition fluid reduces fluid loss into the subterranean formation, wherein the subterranean formation has fractures with a width of from about 1 micron to about 800 microns, and wherein the subterranean formation has a permeability of about 1milliDarcy to about 300 Darcy; and allowing the cement composition to set in the subterranean formation.

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