Pumped oil well bottom safety valve
Pumping from two levels of a pool of production fluid, and...
Pumping from two levels of a pool of production fluid, and...
Pumping system for high viscosity oil
Purging apparatus
Reciprocating pump with partial flow reversal
Reinforcing element and demand sensitive pressure intensifier fo
Retrievable stress and torque reducing tool
Rotor placer for progressive cavity pump
Safety clamp for walking beam compressor
Safety system for submersible pump
Safety valve installed below an activation pump in a hydrocarbon
Sand recovery unit
Sand release apparatus for a pump
Sand separating, producing-well accessory
Sand shield for bottom hole pumps
Scavenger system and electrical submersible pumps (ESP's)
Self actuated intake valve assembly for inlet subsurface recipro
Self actuated intake valve assembly for insert subsurface recipr
Shaft locking couplings for submersible pump assemblies