Interlocking core trays

Interlocking engagement mechanism for an adjustable bent...

Intermediate fluid systems for long distance oil displacement

Intermediate radius steerable tool

Intermediate weight drill stem member

Intermediate weight drill string member

Intermetallic bonded diamond (ibd) cutting elements

Intermittent steam injection

Intermittently rotatable down hole drilling tool, thrust...

Internal blow out preventer ball and seat

Internal breaker for oilfield fluids

Internal breaker for oilfield treatments

Internal coiled tubing connection with torque capability

Internal flow-line valve and actuator

Internal flow-line valve and actuator

Internal fluid screen to prevent nozzle and port plugging

Internal gate valve for flow completion systems

Internal pipe stopper

Internal pressure indicator and locking mechanism for a...

Internal pressure sleeve for use with easily drillable exit...