Patent · US Active

Mineral-based drilling fluid and drilling method

US8563483B2 · kind B2 · utility

0Cited by

3References

3Claims

0Family size

Assignees

IFP
TOTAL SA · FR

Inventors

Yannick Peysson · Rueil-Malmaison, FR
David Pasquier · Val-de-Reuil, FR

Key dates

Filing date	Dec 4, 2008
Grant date	Oct 22, 2013
Priority date	—
Expiry date	Jun 3, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/16
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A high-temperature drilling fluid is disclosed based on brine and on a mixture of solids of controlled grain size, with water, dissolved salts and insoluble mineral solids comprising at least in part a weighting material of a grain size such that its D50 ranges between 1 and 25 μm and in part colloids of a grain size such that its D50 ranges between 0.2 and 2 μm. The total volume fraction of the solids ranges between 30 and 50% in relation to the total volume, and the total volume comprises at least 10% by volume of the colloids.

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