Labyrinth lock seal for hydrostatically set packer
Labyrinth seal for pumping system
Laminate pressure-containing body for a well tool
Land erosion protection on a rock cutter
Land rig
Landing nipple
Landing nipples
Landing string assembly
Landing string compensator
Large bore hydraulic drilling jar
Large bore packer and methods of setting same
Large compact cutter rotary drill bit utilizing directed...
Large diameter bit for shallow angle holes
Large diameter bit with a replaceable stem
Large diameter bit with bridge mounted drive stem
Large diameter earth boring bit
Large diameter flush-joint pipe handling system
Large-diameter multi-passage swivel joint for high pressure...
Latch and release perforating gun connector
Latch and release tool connector and method