Baker Hughes Corporation

Eugene A Elphingstone

Ronald Gene Bland

Frank B Woodworth

Bong Jin Chai

Maria A Alonso-DeBolt

Peter B Eichelberger

A method has been discovered for controlling bacterial growth using a dry biocide. Tetra-kis-hydroxymethyl-phosphonium sulfate (THPS) is adsorbed on a solid, particulate substrate through a spraying technique. The THPS in a dry form eliminates or reduces risks involved in handling and shipping the normally liquid THPS.

Dry biocide

A non polluting additive or spotting fluid which lubricates, releases and/or prevents differentially stuck drill strings and casings in the wellbore of a subterranean well is presented. This additive composition comprises a glycol or glycol ether derived from a long chain epoxide of greater than 3 carbon atoms (preferably greater than 10 carbon atoms); and preferably comprises the reaction product between 2-ethylhexanol and the epoxide of 1-hexadecene. The present invention enhances the lubricity of a drilling fluid to prevent drill string sticking and when utilized as a spotting agent reduces the time required to release a stuck pipe. This invention also helps reduce or prevent foaming. By eliminating the need for traditional oil-based components, the present invention is nontoxic to marine life, biodegradable, environmentally acceptable, easy to prepare, and capable of being disposed of at the drill site without costly disposal procedures.

Growing community of inventors

Missouri City, TX, United States of America

Eugene A Elphingstone