Longwall mining method designed to alleviate the earth...
Longwall mining roof control system
Longwall mining system
Loop line with mobile coupling linking a header intake to a...
Loop systems and methods of using the same for conveying and...
Lossing device and method using directional emission and/or...
Lost circulation control
Lost motion valve actuator
Lost profit reduction process and system
Low actuation pressure bar vent
Low cost, brine tolerant sulfonate and sulfate surfactants...
Low cutter load raise head
Low debris perforating gun system for oriented perforating
Low density ball sealers for use in well treatment fluid...
Low density proppant
Low dosage naphthenate inhibitors
Low emission power generation and hydrocarbon recovery...
Low flow safety valve with pressure lock
Low fluid loss additive composition and method of use
Low fluid loss cement compositions, fluid loss reducing...