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7500390 |
Method for estimating pump efficiency
The present invention provides highly accurate methods for directly calculating pump fillage which avoid the need and expense of a pump dynamometer card and subsequent calculations.
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6857474 |
Methods, apparatus and products useful in the operation of a sucker rod pump during the production of hydrocarbons
Apparatus, methods and products for monitoring/controlling a reciprocating well producing hydrocarbons from a wellbore, which determine the surface card from a well operating characteristics,...
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5823262 |
Coriolis pump-off controller
The operation of an oil well pumping unit control system (20, 200) is governed by a computerized automated control unit (88) that receives flow rate measurements from a Coriolis flow meter (28)....
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5654504 |
Downhole pump monitoring system
The present invention relates to a downhole hydraulic pump monitoring system and more specifically relates to a system which detects and/or anticipates pump malfunctions by processing readings...
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5309761 |
Methods and apparatus for measuring the erodability of drilling fluid deposits
Methods of measuring the erodability of drilling fluid deposits and the shear stress required to remove drilling fluid deposits formed on the walls of a well bore are provided. The methods...
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5184507 |
Surface hydraulic pump/well performance analysis method
Surface hydraulic fluid pressure and sucker rod displacement are measured and used to analyze the performance of a pumped oil well having a surface hydraulic actuator connected to a downhole pump...
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5167490 |
Method of calibrating a well pumpoff controller
A method of calibrating a well pumpoff controller by calibrating the controller for determining the average load during a pumping stroke, measuring the actual load and averaging the measured...
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5159832 |
Indicating device
An indicating device for repeatedly indicating variation in the load on a part such as a polish rod of a pump is disclosed. The indicating device includes an indicator for providing an indication...
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RE33690 |
Level sensor
A system for controlling production in an oil well comprises a first level sensor mounted upon the outer surface of the tubing near the lower end of the tubing and a second level sensor mounted...
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4947936 |
Well unit dynamometer installation means and method
A well unit dynamometer installation means and method. A reciprocal well unit is operated with a spacer mounted on the polish rod above the carrier bar. To install a dynamometer the unit is...
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4932253 |
Rod mounted load cell
A load cell is mounted on a polished rod between a rod clamp and a hanger bar. The polished rod is connected to a string of sucker rods that drive a reciprocating pump for lifting fluid from a...
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4873635 |
Pump-off control
A pump-off controll device for controlling a pumpjack unit. The device measures the length of time required for the pump to downstroke successive numbers of times, and when the time differential...
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4854164 |
Rod pump optimization system
An apparatus for measuring the quantity and flow rate of liquids in a flowing fluid stream containing liquids and gases such as found in oil well production, with an optional controller for oil...
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4741208 |
Pump differential pressure monitor system
A pump differential pressure monitor system enables both discharge and intake pressure to be monitored at the surface of a centrifugal well pump. This system includes a tubular sub mounted between...
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4672845 |
Polish rod temperature sensing system and rod stroking control
A well polish rod temperature sensing system, for use at a well head, comprising (a) first sensor located in proximity to the polish rod to sense its temperatures T 1 , (b) second sensor for...
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4661751 |
Well pump control system
A well pump control system is disclosed for utilization with a conventional well pump having a stationary member and a reciprocating member. The reciprocating member operates a down-hole pump and...
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4644785 |
Hinged strain cell mounting apparatus
Apparatus for removably connecting a strain cell to a polished rod of a well pumping unit and for preventing the development of strain cell output signals due to bending of the polished rod. The...
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4631954 |
Apparatus for controlling a pumpjack prime mover
An improved pump control having a device for measuring relative movement between structural components of a pumpjack unit, and converting the movement into a signal which varies according to the...
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4583915 |
Pump-off controller
The pump-off controller checks for pump-off by calculating the area inside of a figure whose boundaries are the minimum load, two position lines defined by the user and the load at the time the...
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4576041 |
Dynamic balancing means for an oil well pumping unit
A tension indicator is applied to the belt of a belt driven oil well pumping unit. The pumping unit is driven by an internal combustion engine, and the tension indicator is read for at least one...
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4561299 |
Apparatus for detecting changes in inclination or acceleration
Apparatus for detecting changes in inclination or acceleration is disclosed. In its preferred environment the apparatus is used to determine the position of the sucker-rod of a sucker-rod pump. The...
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4541274 |
Apparatus and method for monitoring and controlling a pump system for a well
Pulses produced by a pulse generator coupled to the output shaft of an electric motor that reciprocates a polish rod of a well pumping system are counted by a computer to locate the polish rod at a...
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4509365 |
Method and apparatus for weighing a sucker-rod pumped well
Method and apparatus for checking a sucker-rod pumped well for defects by weighing the well. A load cell connected between the sucker-rod and a power unit develops a signal representative of the...
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4507055 |
System for automatically controlling intermittent pumping of a well
A system for automatically controlling the intermittent pumping of a well minimizes fluid pound occurrence without reducing well production. The pump is operated in a learn mode until pump-off of...
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4492115 |
Method and apparatus for measuring defects in ferromagnetic tubing
A method and apparatus for determining the extent of defects in ferromagnetic tubular elements comprising a continuous string for use in an oil or gas well is disclosed. The tubing trip tool...
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4487061 |
Method and apparatus for detecting well pump-off
Methods and apparatus for detecting fluid pound in a sucker-rod oil well, using maximum and minimum values of sucker-rod position and of sucker-rod load to calculate a reference position and a...
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4430892 |
Pressure loss identifying apparatus and method for a drilling mud system
Methods and means are disclosed for the monitoring of conditions in a mud circulation system as used in the drilling of oil and gas wells, and to quickly detect and indicate pressure failures that...
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4389164 |
Automatic liquid level controller
A source of acoustic pressure pulses is coupled to the surface casing of a well so that they are transmitted down the well and reflected by the gas-liquid interface. A transducer is also coupled to...
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4365506 |
Remotely operated downhole test disconnect switching apparatus
A remotely controlled switching apparatus for selectively controlling the connection of a downhole device to a power cable which carries power to a downhole motor includes a thermostatic switch...
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4311047 |
Fluid presence detector
The present invention detects the presence of liquid and it is used to control pumping of a well when the quantity of liquid being discharged by the pump per stroke is much less than the volumetric...
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4143546 |
Sucker rod pump dynamometer
The work done by a sucker rod pump is read through the use of a pendulum potentiometer mounted on the walking beam of the pump and a load sensing pin located at the lower end of the wire line which...
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4129037 |
Apparatus for wear detection
Method and apparatus for measurement of expected wear on a wide range of mechanisms that are subjected to a plurality of wear inducing factors. Where detection of wear is desired for certain...
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4107987 |
Geothermal well pump performance sensing system and monitor therefor
The operating characteristics of deep well pumping equipment in a geothermal well power-generation system are observed by cooperating sensor and communication elements permanently associated with...
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4090405 |
Polished rod load transducer
A polished rod load transducer for connection to the polished rod for measuring the load in a sucker rod well pumping system in which the transducer body has at least three symmetrical sections...
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4058757 |
Well pump-off controller
A system for measuring current or load for shutting down a motor of a walking beam type pumping unit in the event that pump-off occurs. The system employs a peak picker which picks either minimum...
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4034808 |
Method for pump-off detection
A method and apparatus for measuring the energy input to the rod string of a well pumping unit in real time wherein the load on the rod string is multiplied by the velocity of the rod string and...
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4023136 |
Borehole telemetry system
A geothermal well power-generation system is monitored by sensors permanently associated with the operating power generation system. These sensors detect changes in well water temperature, water...
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4015469 |
Pump-off monitor for rod pump wells
An improved method for determining when a rod pumped well has pumped-off wherein the energy input to the polished rod is determined for a portion of the pump stroke and the variation in the...
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4000645 |
Apparatus for pneumatically monitoring conditions of a well circulating system
Pneumatic apparatus for monitoring conditions of the drilling fluid circulating system of a well being drilled. A pneumatic signal having unequal duration times and representative of the rate of...
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3965736 |
Clamp-on transducer for well unit
Strain measuring devices for measuring the strain in the polish rod of a rod-pumped well unit. The devices include a body member to which strain gages are bonded, and further include clamp means...
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3951209 |
Method for determining the pump-off of a well
A method for monitoring a rod pumped well and determining when the well has pumped off. The method uses a dynamometer to monitor the power input to the rod string and senses when the power input...
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3926047 |
Well production signal means
A well pumping unit which employs a walking beam carried on a saddle bearing which in turn is supported by a sampson post wherein a signal means which produces a signal on movement of a member of...
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3838597 |
METHOD AND APPARATUS FOR MONITORING WELL PUMPING UNITS
Method and apparatus for monitoring the operation of a sucker rod-type pump employed in withdrawing fluids from a well. A transducer is employed to generate a signal representative of the load in...
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3817094 |
WELL MONITORING APPARATUS
Method and apparatus for monitoring the operation of a well which is produced by a beam pumping unit. A load transducer is secured to the surface support structure of the beam pumping unit such...
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3765234 |
METHOD FOR DETERMINING THE NET TORQUE AND THE INSTANTANEOUS HORSEPOWER OF A PUMPING UNIT
A method for determining the imposed instantaneous net torque and instantaneous horsepower of a pumping unit, wherein the true angular position of the output shaft of the pumping unit gear box is...
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3705532 |
METHODS FOR CONTROLLING PUMPING WELLS
A method and system for pumping-well control including determination of a production profile for the well. The profile consists of a function that defines the normal producing conditions when the...
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3635081 |
DIAGNOSTIC METHOD FOR SUBSURFACE HYDRAULIC PUMPING SYSTEMS
A method is described for determining the downhole operating conditions of a hydraulic pumping system from measurements taken at the surface. Measurements of the surface flow rate and dynamic...
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3527094 |
APPARATUS FOR ANALYZING SUCKER-ROD WAVE MOTION
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3499324 |
DYNAMOMETER FOR WELL PUMPS
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3359791 |
System responsive to well pumping loads
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