Baker Hughes Corporation

Wellbore Chemicals LLC

Jinguo Zhang

Paul H Javora

Keith W Sharp

Jacob J Gibson

A cleaning agent, which comprises a mutual solvent, a carrier fluid, a nonionic surfactant and another nonionic surfactant as co-surfactant. The cleaning agent can be used, for example, to clean oil and water based drilling mud and water-wet the surface.

Composition of wellbore cleaning agent

A well servicing fluid for reducing polymer degradation is disclosed. The well servicing fluid is formulated with components comprising: at least one free radical scavenger, with the proviso that the free radical scavenger is not erythorbate, lignin or lignin derivatives; at least one polymer and an aqueous based solvent. Methods for servicing a well employing well servicing fluids of the present disclosure are also disclosed.

Well fluid and method of servicing a well

A method for forming a well and pipeline treating fluid is provided. The method comprises combining a cross-linkable gelling polymer, a scavenging compound capable of reducing a concentration of divalent and polyvalent metal ions and salts thereof available for reaction, a hydration solvent and optionally an acid. The resulting mixture has a pH ranging from about 3 to about 7 and a first viscosity. The mixture is maintained at conditions suitable for hydration of the cross-linkable gelling polymer until the mixture has a second viscosity that is greater than the first viscosity. The mixture is combined with an aqueous based fluid and at least one cross-linking agent. The pH of the mixture is raised to a sufficient level to allow a desired degree of cross-linking to occur. Other methods, a well and pipeline treating gel and a well and pipeline treating fluid are also provided.

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Katy, TX, United States of America

Jinguo Zhang