135623 ⎘
Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells; Methods or apparatus for controlling the flow of the obtained fluid to or in wells; Lifting well fluids; Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive Adaptations of walking-beam pump systems
Hydraulically powered ball valve lift apparatus and method for downhole pump travelling valves
#302Electric power saving device for motor of pump jacks apparatus
#303Methods and apparatus to determine production of downhole pumps
#304Synchronized pump down control for a dual well unit with regenerative assist
#305Rod hang-off system
#306Methods and apparatus for calibrating controllers for use with wells
#307Oil-well-pump driving hydraulic system
#308Magnetic anti-gas lock rod pump
#309Pumping unit and counterbalance system for pumping units
#310Deviation tolerant well plunger pump
#311Power production in a completed well using magnetostrictive materials
#312Downhole tool for opening a travelling valve assembly of a reciprocating downhole pump
#313Pump for extracting water, petroleum, or other fluids
#314Electrical apparatus and control system
#315Reciprocating subsurface pump
#316Stuffing box leak containment apparatus
#317Pump jack assembly
#318Cranked Rod Pump Method
#319Hydraulic oil well pumping apparatus
#320Downhole gas separator and method
#321Polymeric treatment and wellbore pump arranged to increase hydrocarbon production
#322Gas separator assembly for generating artificial sump inside well casing
#323Sucker rod apparatus and method
#324Low profile rod pumping unit with pneumatic counterbalance for the active control of the rod string
#325Well-drilling sucker-rod pump
#326Intelligent online closed-loop balance adjusting system for pumping unit
#327Water-powered pump actuation system
#328Double-action sucker-rod well pump
#329Lined downhole oilfield tubulars
#330Instrumented rod rotator
#331Method and system for optimizing downhole fluid production
#332Methods and apparatus for removing liquid from a gas producing well
#333Calculating downhole pump card with iterations on dual damping factors
#334Calculating downhole pump card with iterations on single damping factor
#335Fluid load line calculation and concavity test for downhole pump card
#336Stuffing box leak containment apparatus
#337Calculating downhole cards in deviated wells
#338Delivery device having a connecting rod, and a method for controlling a delivery device having a connecting rod and at least one balance weight
#339System and method for failure detection for artificial lift systems
#340Tower frame combined transmitting pumping unit without guiding wheels
#341Relocatable sucker rod pump assembly
#342Sucker rod apparatus and method
#343POLISHED ROD WITH LATCHING SECTION
#344Down-hole gas separator
#345Downhole gas release apparatus
#346Unlimited Stroke Drive Oil Well Pumping System
#347Tool for use in well monitoring
#348Stuffing box leak containment apparatus
#349Stuffing box leak containment apparatus
#350Sliding valve downhole pump
#351Reciprocating pump drive apparatus for operating a downhole pump via a rod string
#352Method and apparatus for producing shock waves in the borehole of wells filled by liquid
#353Sand plunger for downhole pump
#354Methods for Retrieving A Dipper Assembly
#355Artificial simultaneous production and maintenance system assisted by mechanical pumping with flexible tubing for fluid extraction
#356Reciprocated Pump System for Use in Oil Wells
#357Double string slurry pump
#358Monitoring system for sucker rod
#359Continuous composite rod and methods
#360Method and apparatus for removing liquid from a gas producing well
#361Wireless Monitoring of Pump Jack Sucker Rod Loading and Position
#362Coiled umbilical tubing
#363Cross-jack counterbalance system
#364Pumping device for pumping fluid
#365Double standing valve sucker rod pump
#366WAFER STUFFING BOX
#367Portable pump jack
#368Stuffing box leak containment apparatus
#369Cranked rod pump apparatus and method
#370Corrugated settling cup and a multi-cup uniform flux gas anchor
#371Method and apparatus for the dampening of shocks in the borehole of wells
#372Continuous Slow Dissolving Chemical Treatment for Oil and Gas Wells
#373System and method for well control
#374Relocatable sucker rod pump assembly
#375Calculation of downhole pump fillage and control of pump based on said fillage
#376Calculation of downhole pump fillage and control of pump based on said fillage
#377Double string pump for hydrocarbon wells
#378Producing gas and liquid from below a permanent packer in a hydrocarbon well
#379Slim hole production system and method
#380Cyclonic debris evacuation apparatus and method for a pump
#381POSITION MONITORING FACILITY
#382Artificial Lift Mechanisms
#383Cyclonic debris evacuation apparatus and method for a pump
#384Continuous composite rod and methods
#385Top seal assembly
#386Well Release System and Method
#387Double standing valve sucker rod pump
#388Method, apparatus, and magnet for magnetically treating fluids
#389Method of improving performance and efficiency of wellbore pump for hydrocarbon production
#390PUMPING UNIT
#391Pump rod connector apparatus and method
#392Downhole well pump
#393Deep force pump for oil wells
#394Apparatus For Pumping Fluids From A Well
#395Top Hold Down Rod Pump with Hydraulically Activated Drain and Method of Use
#396Artificial lift structures
#397Gas lift plunger arrangement
#398Hybrid hydraulic-electric RAM pumping unit with downstroke energy recovery
#399Polymer shock absorber for use with well head lubricator assembly
#400Unlimited stroke drive oil well pumping system
#401Method and System for Optimizing Downhole Fluid Production
#402Hydrocarbon production system and method of use
#403Reciprocated pump system for use in oil wells
#404Pumping and repairing unit
#405Reciprocating pump drive apparatus
#406Polished rod rotator
#407Drive piston and foot valve seat
#408Primary leak containment device for well-heads
#409Assembly and method of alternative pumping using hollow rods without tubing
#410Wellbore evaluation system and method
#411Gas lift plunger arrangement
#412Wellbore evaluation system and method
#413Valve cage insert
#414Variable orifice bypass plunger
#415Oil well pumping unit and method therefor
#416Method of circulating through a reciprocating downhole tubing pump and a reciprocating downhole tubing pump
#417Well stuffing box packing
#418Method of cleaning out blockages which prevent operation of a reciprocating downhole tubing pump
#419Shock absorbing and shock force generating apparatus with shear pin for an oil pump and method therefor
#420Sucker rod guide to reduce turbulence
#421Traveling valve assembly for reciprocating rod pumps
#422For CPA pumping unit with end return for positioning drive
#423Pumping unit with end return for positioning drive
#424Fluid and gas separator
#425Superimposed standing valve
#426Head with contiguous counterweight
#427Rod string latching tool without integral release mechanism and method for use of same
#428Pump jack with downhole pump
#429Energy harvesting and converting beam pumping unit
#430Articulated reciprocating counterweight
#431Intelligent force reducing double-acting counterweight
#432Adjusting speed during beam pump cycle using variable speed drive
#433Rotator arm stop and roller assembly