Patent · US Expired

Set delayed cement compositions and methods of using the same

US4676832A · kind A · utility

187Cited by

11References

18Claims

0Family size

Assignee

Halliburton · US

Inventors

Jerry D. Childs · Duncan, US
David L. Sutton · Duncan, US
Freddie Lynne Sabins · Duncan, US

Key dates

Filing date	Oct 26, 1984
Grant date	Jun 30, 1987
Priority date	—
Expiry date	Oct 26, 2004

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/467
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Set delayed cement compositions capable of being retained in pumpable fluid states for long time periods and then activated to set into hard masses and methods of using such compositions for cementing zones at remote locations are provided. The compositions are comprised of hydraulic cement, water, one or more hydratable gel forming materials and one or more methylenephosphonic acid derivative set delaying agents.

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