Patent · US Active

Crosslinker suspension compositions and uses thereof

US7968501B2 · kind B2 · utility

21Cited by
9References
25Claims
0Family size

Assignee

Inventor

Key dates

Filing dateOct 31, 2006
Grant dateJun 28, 2011
Priority date—
Expiry dateOct 10, 2028

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09K8/685
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

A delayed crosslinker system useful in downhole treatment fluids is disclosed. The crosslinker system comprises water-reactive solids, a non-aqueous, non-oily, hygroscopic liquid, a suspension aid, and an optional polyol. The crosslinker system may be prepared at a remote location and transported to the site of its intended use. There it may be pumped into a formation and activated when a gel fluid is introduced into the wellbore, only then forming a high viscosity treatment fluid. Thus, the amount of energy required for pumping is reduced. The optional polyol component increases crosslink delay and enhances the rate of viscosity after high shear (shear recovery).

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