LandOfFree - US Patents - Listing for Wells

Wells – Guide for device or conduit – On sucker or pump rod

Rod guide with wear gauge

Wells – Brushing – scraping – cutting or punching-type cleaners – On sucker rod

Rod guide/paraffin scraper

Wells – Processes – Placing or shifting well part

Rod hanger and clamp assembly

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator

Rod operated rotary well valve

Wells – With below and above ground modification – Eduction pump or plunger in well

Rod pull down tool

Wells – With below and above ground modification – Eduction pump or plunger in well

Rod pull down tool

Wells – Processes – Producing the well

Rod pump

Wells – Above ground apparatus – With seal for reciprocating member

Rod pump stuffing box

Wells – Processes – Producing the well

Rod stand

Wells – Processes – Vibrating the earth or material in or being placed in the...

Rod string sonic stimulator and method for facilitating the flow

Wells – Guide for device or conduit – On sucker or pump rod

Roller arm centralizer

Wells – Above ground apparatus – With means facilitating connecting or disconnecting...

Roller for use in a spinner apparatus

Wells – Above ground apparatus – With valve on cap or head

Roller guide for oil-well pump

Wells – Guide for device or conduit – Surrounding existing device or tubing

Roller subs

Wells – Processes – Assembling well part

Rollers for tubing injectors

Wells – Processes – Producing the well

Rotary and reciprocal well pump system

Wells – Processes – Placing or shifting well part

Rotary blowout preventer

Wells – Above ground apparatus – With seal for reciprocating member

Rotary blowout preventer adaptable for use with both kelly and o

Wells – Above ground apparatus – Having retractable pipe section to allow closing of gate...

Rotary blowout preventer adaptable for use with both kelly and o