Process and water-base fluid utilizing hydrophobically modified

Details Process and water-base fluid utilizing hydrophobically modified Process and water-base fluid utilizing hydrophobically modified

1996-01-11

1998-02-24

Neuder, William P.

Wells

Processes

Cementing, plugging or consolidating

175 72, E21B 33138

Patent

active

057203474

ABSTRACT:
In a drilling well, well completion, or well workover, the permeability of the walls is controlled by adding a predetermined amount of at least one hydrophobically modified guar gum derivative, e.g., a hydrophobically modified hydroxypropyl guar (HMPG), so as to reduce the amount of filtrate lost through the walls. The fluid may also include viscosifiers such as polymers or reactive clay.

REFERENCES:
patent: 3615794 (1971-10-01), Niemerick
patent: 3740360 (1973-06-01), Nimerick
patent: 3763934 (1973-10-01), Coulter, Jr. et al.
patent: 3766984 (1973-10-01), Niemerick
patent: 4529523 (1985-07-01), Landoll
patent: 4620596 (1986-11-01), Mondshine
patent: 4960876 (1990-10-01), Molteni et al.

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