Enhanced oil-based foam drilling fluid compositions and...

Details Enhanced oil-based foam drilling fluid compositions and... Enhanced oil-based foam drilling fluid compositions and...

E - Fixed Constructions

21

B

E21B 21/14 (2006.01) C09K 8/38 (2006.01)

Patent

CA 2670893

New oil-based foam drilling fluids for oil and/or gas wells are disclose as well as methods of making and using same. The new oil-based drilling fluids including a base oil, a foaming agent and a polymer including at least one aromatic olefin monomer and at least one diene monomer, where the polymer improves foam properties rendering a foam stable at temperatures at or above 300°F and even at temperatures at or above 350°F.

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