Invention Grant
- Patent Title: Combination of fluid loss control additive and lost circulation materials to control losses in formation
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Application No.: US16583203Application Date: 2019-09-25
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Publication No.: US11225596B2Publication Date: 2022-01-18
- Inventor: Sandip Prabhakar Patil , Samuel Jason Lewis , Kyriacos Agapiou , Ganesh Shriniwas Pangu
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: C. Tumey Law Group PLLC
- Agent Thomas Rooney
- Main IPC: E21B43/12
- IPC: E21B43/12 ; C09K8/487 ; C04B18/16 ; C09K8/03 ; C04B28/02

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 1 milliDarcy to about 300 Darcy; and allowing the cement composition to set in the subterranean formation.
Public/Granted literature
- US20210087459A1 COMBINATION OF FLUID LOSS CONTROL ADDITIVE AND LOST CIRCULATION MATERIALS TO CONTROL LOSSES IN FORMATION Public/Granted day:2021-03-25
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