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COMBINATION OF FLUID LOSS CONTROL ADDITIVE AND LOST CIRCULATION MATERIALS TO CONTROL LOSSES IN FORMATION
COMBINATION OF FLUID LOSS CONTROL ADDITIVE AND LOST CIRCULATION MATERIALS TO CONTROL LOSSES IN FORMATION
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机译:流体损失控制添加剂和丢失循环材料的组合,以控制形成损失
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摘要
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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