Lignosulfonate gels for sweep improvement in flooding...
Lignosulfonate-acrylic acid graft copolymers as sacrificial...
Lignosulfonates as sacrificial agents in oil recovery processes
Lignosulfonates for high-temperature plugging
Lignosulfonates for high-temperatures plugging
Limit clamp for use with casing attachments
Limited angle piggable swivel
Limited entry, multiple fracturing from deviated wellbores
Line diverting tool
Line moving apparatus for wireline supported tools
Line protectors
Linear coiled tubing injector
Linear coiled tubing injector
Linear cutting rotary head continuous mining machine
Linear displacement measurement method and apparatus
Linear displacement measurement method and apparatus
Linear feed control for a rotary tool
Linear indexing apparatus and methods of using same
Linear indexing apparatus with selective porting
Linear motor to control hydraulic force