Oil and gas recovery from subterranean formations

Oil and gas well operation fluid used for the solvation of waxes

Oil based compositions and method for temporarily sealing...

Oil based compositions for sealing subterranean zones and method

Oil in water emulsion well servicing fluids

Oil-, hot water-and heat-resistant binders, process for...

Oil-based demulsifying agent and its use in the treatment of...

Oil-based insulating packer fluid

Oil-free water-soluble hydroxyethyl cellulose liquid polymer dis

Oil-in-water-in-oil emulsion

Oilwell sealant compositions comprising alkali swellable latex

On-the-fly control of delayed borate-crosslinking of fracturing

On-the-fly preparation of proppant and its use in...

Organic emulsion-breaking formula and its use in treating...

Organosilicon composition

Ortho ester breakers for viscoelastic surfactant gels and...

Oxidized guar for oilfield servicing fluids