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3970143 |
Oil well production system
A number of oil wells each have a crude oil processing unit located at close to the wellhead. The clean oil produced from each processing unit is connected to supply the clean oil as hydraulic...
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3970144 |
Subsurface shutoff valve and control means
A shutoff valve and control means particularly adapted for subsurface use in oil or gas wells, the shutoff valve being in the form of a sleeve having both circumferential and...
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3968839 |
Subsurface flow control apparatus
A subsurface control which can be installed and retrieved from the interior of a borehole by a wireline. The apparatus is preferably located at the bottom of the borehole and controls production by...
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3967678 |
Stuffing box control system
A stuffing box and associated control system having the facilities for sensing a leak past the polished rod seals and for correcting the leak by adjustment of the seals, utilizes a pressurized...
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3967680 |
Method and apparatus for actuating a downhole device carried by a pipe string
A combination of means to detect rotation of a pipe string and means to detect flow of fluid through a pipe string is utilized to cause down hole apparatus to carry out preferred actions if the...
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3937278 |
Self-propelling apparatus for well logging tools
A self-propelling apparatus for well logging tools includes a housing which is secured to the housing of a well logging tool and which defines a cylinder. A piston is slidably received in the...
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3918519 |
Apparatus for protecting downhole instruments from torsional and lateral forces
In the representative embodiment of the invention disclosed herein, delicate instruments and electronic circuitry used for obtaining downhole measurements are mounted within an elongated housing...
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3915225 |
Method and apparatus for producing hydrocarbons from wells which make water
A chamber having openings in the lower end thereof to allow entry of a hydrocarbon-water mixture is provided with upper and lower electronic sensing devices for detecting a hydrocarbon-water...
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3887158 |
Blow out preventers
A blowout preventer for sealing off around a flexible line to prevent hazardous leakage of well fluids, which is held in an open position by control fluid pressure actuated means and moved to...
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3887011 |
Fire extinguisher
A fire extinguisher for oil wells, and the like, has a first pipe connected to a well pipe and a second pipe branched from the first pipe. First and second valves are arranged in the first pipe,...
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3884261 |
Remotely activated valve
A valve for a pipe formed from two semicylindrical portions, each of which is enclosed in a rubber envelope. A mounting is provided for rigidly mounting the semicylindrical portions in a generally...
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3866676 |
PROTECTIVE STRUCTURE FOR SUBMERGED WELLS
A hydrocarbon producing well located at an offshore site, completely submerged beneath the water. The well includes a flow line extending from a reservoir in the substrate, which flow line passes...
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3863714 |
AUTOMATIC GAS WELL FLOW CONTROL
An automatic gas well control device is disclosed which optimizes gas well production by allowing the well to produce only while adequate flow rates are maintained. The device includes a control...
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3856037 |
VALVE SEQUENCE INTERLOCK SYSTEM
A valve sequence interlock system for assuring the operation of a plurality of valves in a predetermined sequential manner. The system is described as employed in an offshore oil or gas well...
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3850237 |
MUDLINE EMERGENCY SHUTOFF FOR OFFSHORE WELLS
A mudline emergency shutoff for offshore wells, including a subsurface gate valve assembly which carries a connector adapted to latch into a subsurface housing at the mudline beneath a body of...
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3830306 |
WELL CONTROL MEANS
Opening and closing of a subsurface safety valve in a well conduit is regulated by predetermined movement of a well conduit supported from an offshore production platform. In one form of the...
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3804175 |
SYSTEM OF FIREFIGHTING AND BLOW-OUT PROTECTION FOR A DRILLING OPERATION
A system of fire fighting and blow-out protection for a drilling operation comprising valves and flow conduits interconnecting a low pressure and a high pressure source of inert gas to the interior...
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3780803 |
DOWNHOLE CONTROL VALVE FOR CATALYTIC WELLBORE HEATERS
A downhole control valve is positioned in well pipe above a catalytic wellbore heater and is used to control fuel being fed to the heater.
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3780809 |
METHOD AND APPARATUS FOR CONTROLLING WELLS
An improved method and apparatus are disclosed for controlling flow of fluid through a conduit disposed within a well extending beneath the surface of the earth. The apparatus includes a subsurface...
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3731742 |
WELL FLOW CONTROLLING METHOD, APPARATUS AND SYSTEM
A method, apparatus, and system for controlling flow of well fluids from a well in response to sensing of a leak in the connections between the components of the well head or fire at the well head...
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3692106 |
APPARATUS FOR EJECTING FLUID IN A BOREHOLE
An improvement in apparatus for ejecting a fluid in a borehole penetrating subterranean formations characterized by; in addition to the conventional surface equipment, wireline, and downhole tool;...
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3678997 |
AUTOMATIC DEWATERING OF GAS WELLS
An automatic gas well dewatering system which operates to eject water from the well whenever the differential pressure across an orifice plate in the gas discharge line decreases below a...
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3651823 |
THERMAL SENSING BLOW OUT PREVENTER ACTUATING DEVICE
The present disclosure is directed to a fail safe device to close an oil or gas well that has ignited during drilling or workover operations working in conjunction with pressure accumulators and...
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3620299 |
DEVICE FOR PUTTING OUT OIL WELL FIRES
An extinguishing manifold around the opening of an oil well and a control circuit actuated by heat, air pressure or manually to open a valve to cause carbon dioxide to be dispensed from the...
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3568771 |
METHOD AND APPARATUS FOR LIFTING FOAMING CRUDE BY A VARIABLE RPM SUBMERSIBLE PUMP
Many oil wells, especially in their latter stage of primary or secondary recovery, produce foamy crude oil. This crude oil will vary from mostly liquid to mostly foam. Pumping such a fluid is...
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3559731 |
PUMP-OFF CONTROLLER
To obtain optimum production from a producing oil well in which the pump rate exceeds flow rate of liquid into the well, it is necessary to determine the most effective producing cycle of the well....
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3543848 |
INTERMITTER
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3532163 |
AUTOMATIC PASSAGE CLOSING MEANS FOR WIRELINE TOOLS
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3526276 |
FLUID SEPARATOR WITH DELAYED RESPONSE LIQUID LEVEL CONTROL DEVICE
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3473606 |
PRE-CHARGED PRESSURE RESPONSIVE SAFETY VALVE
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3470954 |
TEMPERATURE CONTROL IN AN IN SITU COMBUSTION PRODUCTION WELL
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3457993 |
EMERGENCY COOLING APPARATUS FOR A PRODUCTION WELL
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3450202 |
PETROLEUM WELL THERMALLY ACTIVATED SAFETY RELIEF DEVICE FOR DIFFERENTIAL PRESSURE CLOSING TUBING SAFETY VALVE
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3434534 |
SYSTEM FOR AUTOMATIC INJECTION OF COOLANT INTO THERMAL RECOVERY WELLS
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3430696 |
SHUT-OFF CONTROL FOR AN IN-SITU COMBUSTION PRODUCTION WELL
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3419076 |
Surface condition responsive subsurface safety valve system
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3410346 |
Well apparatus
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3399728 |
Conduit closure apparatus
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3396793 |
Gas well dewatering controller
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3382923 |
Emergency control of injection of cooling water into a hot production well
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3378069 |
Well maintenance and completion tools
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3362487 |
Control for a hydraulically actuated choke in a drilling mud flow line
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3357490 |
Apparatus for automatically introducing coolant into and shutting down wells
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3352359 |
Apparatus for steam treating a deep well
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3351133 |
Tubing weight-controlled safety valve apparatus
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3343598 |
Protection of production well equipment in in situ combustion operation
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3276469 |
Controller for use in gas lifting fluid from wells
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3266574 |
Differential pressure adapter for automatic cycle well control
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3227215 |
Apparatus for preventing well fires
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3219107 |
Remote and automatic control of petroleum production
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