|
US3149884A
|
|
Pneumatic conveyer
|
|
US3216078A
|
|
Process for casting steel and compositions of matter for use therein
|
|
US3122500A
|
|
Flotation of barite
|
|
US3135728A
|
|
Lignite products and methods of making same
|
|
US3135727A
|
|
Lignite derivative and process for preparing the same
|
|
US3214374A
|
|
Drilling fluids and compositions for preparing the same
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|
US3217802A
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Freeing stuck pipe
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US3107739A
|
|
Well fluids and additive therefor
|
|
US3076759A
|
|
Well fluid and additives therefor
|
|
US3220946A
|
|
Beneficiated clay composition for use in drilling fluids
|
|
US3061542A
|
|
Drilling and completion fluid
|
|
US2895911A
|
|
Drilling fluid
|
|
US3034983A
|
|
Drilling and completion fluid
|
|
US3039958A
|
|
Well drilling fluids containing lignite derivatives
|
|
US2948678A
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|
Beneficiated clay compositions and method of beneficiating clay
|
|
US2994660A
|
|
Water-in-oil emulsion drilling fluid
|
|
US3034982A
|
|
Well drilling fluid
|
|
US2986516A
|
|
Preserved lecithin-containing compositions
|
|
US3062740A
|
|
Oil-in-water emulsion drilling fluid
|
|
US3006845A
|
|
Water-in-oil emulsion well fluid and materials for preparing same
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