Patent · US Active

Self-adaptive cements

US8800656B2 · kind B2 · utility

9Cited by

21References

10Claims

0Family size

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

Sylvaine Le Roy-Delage · Paris, FR
Laure Martin · Paris, FR

Key dates

Filing date	Jan 25, 2012
Grant date	Aug 12, 2014
Priority date	—
Expiry date	Nov 11, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/493
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A self-adaptive cement formulation includes cement, water, block copolymer and asphaltite-mineral particles. The set cement demonstrates self-healing properties when exposed to methane, and is particularly suited for well-cementing applications. After placement and curing, the self-healing properties help maintain zonal isolation should bonding be disrupted between the set cement and the formation or a casing string, should cracks or defects appear in the set-cement matrix, or both.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.