Environmentally improved acid corrosion inhibitor

Environmentally safe annular fluid

Environmentally safe drilling fluid

Environmentally safe lubricated well fluid method of making a we

Environmentally safe water base drilling fluid

Epoxy resin composition and well treatment method

Equivalent circulating density control in deep water drilling

Ester based invert emulsion drilling fluids and muds having nega

Esterquat acidic subterranean treatment fluids and methods...

Esters of carboxylic acids of medium chain-length as a component

Ethers

Ethoxylated raw cotton linters for completion and workover...

Filter cake degradation compositions and methods of use in...

Five layer semiconductor device with separate insulated turn-on

Flat rheology drilling fluid

Flat rheology drilling fluids

Flexible polymer, particles prepared therefrom and process...

Fluid and method for releasing tubular elements stuck in a well

Fluid comprising cellulose nanofibrils and its use for oil...

Fluid drill-hole treatment agents based on polycarboxylic acid d