Apparatus for the passive support of overhead solids and...

Apparatus for trace heating a wellhead fuel gas line and...

Apparatus for transferring electrical energy between...

Apparatus for translating a rotary expander tool downhole

Apparatus for transmitting data from a borehole to the...

Apparatus for treating rock surrounding a wellbore

Apparatus for treating well bores

Apparatus for unscrewing drill pipe sections

Apparatus for use in a wellbore

Apparatus for use in a wellbore

Apparatus for use in cementing a casing string within a well...

Apparatus for use in drilling

Apparatus for use in settling slips on a drill rig

Apparatus for use in wells

Apparatus for use with a tracked vehicle for driving an ice...

Apparatus for use with under-water wells

Apparatus for vibrating a pipe string in a borehole

Apparatus for warming entrained gases from recovered...

Apparatus for well logging telemetry

Apparatus for well logging while drilling