Earth boring – well treating – and oil field chemistry – Well treating – Contains inorganic component other than water or clay
Patent
1997-05-28
1999-11-09
Tucker, Philip
Earth boring, well treating, and oil field chemistry
Well treating
Contains inorganic component other than water or clay
507110, 507113, 507114, 507115, 507140, 507209, 507211, 507215, 507216, 507217, 507269, 166295, 166308, C09K 300, C09K 702, E21B 3313
Patent
active
059814470
ABSTRACT:
A chemical system and method to stop or minimize fluid loss during completion of wells penetrating hydrocarbon formations are provided. The inventions relates to formulating a highly stable crosslinked hydroxyethyl cellulose (HEC), control released viscosity reduction additives, and user friendly packaging. The chemical system contains a linear HEC polymer solution, a low solubility compound which slowly raises the fluid pH, a chelating agent which further increases the pH level beyond the equilibrium achievable by the low solubility compound, a metal crosslinker which crosslinks HEC at elevated pH, a crosslink delaying agent which allows fluid viscosity to remain low until the fluid reaches the subterranean formation, and optionally an internal breaker. The chemical additives are packaged as an integrated pallet and transported to a field location which allows operators to conveniently mix them before pumping. There is also provided a dry granulated crosslinked polysaccharide for use as a fluid loss control agent.
REFERENCES:
patent: 4505826 (1985-03-01), Horton
patent: 4797216 (1989-01-01), Hodge
patent: 5421411 (1995-06-01), Sydansk
patent: 5532350 (1996-07-01), Cottrell et al.
patent: 5547025 (1996-08-01), Ahmed et al.
patent: 5642783 (1997-07-01), Moradi-Araghi et al.
Chang Frank F.
Parlar Mehmet
Schlumberger Technology Corporation
Tucker Philip
Y'Barbo Douglas
LandOfFree
Method and composition for controlling fluid loss in high permea does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and composition for controlling fluid loss in high permea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and composition for controlling fluid loss in high permea will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1455814