Patent · US Expired

Scleroglucan-based compositions and their use as a cementation spacer

US5306340A · kind A · utility

8Cited by
6References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 11, 1993
Grant dateApr 26, 1994
Priority date—
Expiry dateFeb 11, 2013

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S507/928
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

Use of scleroglucan alone or of mixtures of scleroglucan with a polyalcohol or a dialdehyde as cementation spacers during oil drilling operations.

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