Cross-linking titanium & zirconium chelates & their use

Details Cross-linking titanium & zirconium chelates & their use Cross-linking titanium & zirconium chelates & their use

1988-09-09

1989-12-05

Terapane, John F.

Compositions

Leather or fur treating

166294, 166295, 523130, E21B 4326

Patent

active

048851035

ABSTRACT:
Water-soluble N,N-bis-(2-hydroxyethyl)-glycine/metal chelates represented by the formula: ##STR1## wherein R is H or alkyl (1-12C); M is Ti or Zr; k is a number in the range between 0 and 1, p is a number in the range between 1 and 2, and k+p=2 (in particular embodiments: k=1 and p=1; k=0 and p=2; and k=0.5 and p=1.5). The chelates can be used as cross-linking agents in hydraulic fracturing fluids and in gels that are used for selectively plugging permeable zones in subterranean formations or for plugging subterranean leaks.

REFERENCES:
patent: 3301723 (1967-01-01), Chrisp
patent: 3888312 (1975-06-01), Tiner et al.
patent: 4579670 (1986-04-01), Payne
patent: 4609479 (1986-09-01), Smeltz
patent: 4686052 (1987-08-01), Baranet et al.
patent: 4702848 (1987-10-01), Payne

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