239000004568 cement Substances 0.000 title claims abstract description 133.Application granted granted Critical Publication of US4797159A publication Critical patent/US4797159A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Dowell Schlumberger Inc filed Critical Dowell Schlumberger Inc Priority to US06/890,672 priority Critical patent/US4797159A/en Assigned to DOWELL SCHLUMBERGER INCORPORATED reassignment DOWELL SCHLUMBERGER INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST. Original Assignee Dowell Schlumberger Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Spangle Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US06/890,672 Inventor Lloyd B.
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Google Patents Expandable cement compositionĭownload PDF Info Publication number US4797159A US4797159A US06/890,672 US89067286A US4797159A US 4797159 A US4797159 A US 4797159A US 89067286 A US89067286 A US 89067286A US 4797159 A US4797159 A US 4797159A Authority US United States Prior art keywords cement magnesium oxide composition microns well Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4797159A - Expandable cement composition US4797159A - Expandable cement composition
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