Texaco Inc.

Rae A Royle

David G Nolte

The invention is a method for the isolation of palynological materials from a rock sample in a pressurized reaction cell, which permits reaction at pressures greater than two atmospheres and provides for the removal of all liquids from the cell without significant loss of sample solids, the method employing multiple steps of addition and removal of concentrated and dilute hydrochloric acid, concentrated hydrofluoric acid, concentrated ammonium hydroxide, concentrated nitric acid and deionized water, followed by centrifugation and zinc bromide separation steps.

Method for isolating palynological material from a rock sample in a

Stable oil-in-water emulsions in produced fluids from wells undergoing acidization treatments are demulsified by treatment of the produced fluids with a long chain carboxylic acid ester of a polyhydric alcohol such as sorbitan monolaurate, surbitan monopalmitate or sorbitan monooleate as a demulsification agent.

Demulsifier for produced oil-in-water emulsions containing spent mud

The formation of stable oil-in-water emulsions in produced fluids from wells undergoing acidization treatment is prevented by the inclusion within the injected acidization chemical mixture of a long chain carboxylic acid ester of a polyhydric alcohol such as sorbitan monolaurate, sorbitan monopalmitate or sorbitan monooleate as a demulsification agent.

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Houston, TX, United States of America

Rae A Royle