Matches 251 - 300 out of 387 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
5139090 Tubing rotator with downhole tubing swivel  
A cased wellbore extends downhole to a pay zone which is produced by a rod actuated downhole pump that lifts fluid from the bottom of the wellbore up through a tubing string to a wellhead. The pump...
5117908 Method and equipment for obtaining energy from oil wells  
Pressurized petroleum flows from a well into a turbine. The petroleum undergoes a pressure reduction in the turbine and then enters a separation chamber where it is separated into liquid and...
5113937 Device for separating a mixture of free gas and liquid at the intake of a pump at the bottom of a drilled well  
A device is disclosed for separating a mixture of free gas and liquid at the intake of a pump connected to a bottom end of a tubular column at the bottom of a drilled well. The pump is connected to...
5095983 Multiphase production evaluation method using thru-tubing, wireline packoff devices  
A method for providing improved measurement of oil, water, and gas flow rates in producing wells using thru-tubing wireline inflatable and retrievable packers or plugs to systematically isolate...
5095990 Method and device for sand control  
A method and device for removing sand from hydrocarbonaceous fluids whereby a berm is formed adjacent to a slot which has penetrated a liner or perforated tube. The berm which is formed along each...
5080781 Down-hole hydrocarbon collector  
A portable low-viscosity hydrocarbon collector incorporating an endless absorption belt for collecting low-viscosity hydrocarbon liquids from a well and pumping those liquids to the surface. The...
5078213 Adjustable floating pumping system  
An adjustable floating pumping system is disclosed for recovery of petroleum products and other lighter than water contaminants from ground water through small diameter wells. The pumping system...
5058680 Method of detonating a perforating apparatus on a tubing including lowering one end of a pump and a firing head into said tubing  
A perforating gun having no firing head and no primary explosives is attached to a tubing string and the tubing string is run into a borehole. A new pump apparatus, having a firing head, is run...
5054557 Device for extracting a liquid out of a tube of great length  
Device for extracting a liquid out of a tube of great length closed at one of its ends in case a communication between the closed end and a source of a substitution fluid should be difficult to...
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...
5040608 Anchorable pack-off assembly and method of seating the same  
Anchoring of a pack-off assembly of an oil well pump is improved by the provision of a tapered conical sleeve as a wedge for a friction seating ring which is forced outwardly against the inner...
5029641 Inverted wellbore completion  
A method for selectively producing oil from a reservoir containing both oil and gas. A lateral or horizontal wellbore is drilled within the reservoir below the gas-oil interface, and the wellbore...
5027902 Self-cycling pump apparatus and method  
A self-cycling pump apparatus wherein a valve functioning as a pump cycling device is connected to the pump so that it may be lowered together with the pump to a submerged position in a sub-surface...
4978172 Gob methane drainage system  
A system for recovering methane gas from a coal seam and rock strata and other coal seams above a coal seam being mined or as has been previously mined. The system involves directionally drilling...
4962847 Liquid lift  
A cable pulley transmission has a plurality of pulleys with flight receiving pockets, an endless cable trained about the pulleys, and a plurality of flights located at spaced intervals along the...
4946312 Apparatus for opening up garbage dumping ground gas sources and for the exploration and sanification of old deposit site burdens and contaminated soils  
An apparatus for the opening up of garbage dumping ground gas sources and for the exploration and sanitization of old deposit site burdens and contaminated soils. A hollow cylindrical probe is...
4942926 Device and method for carrying out operations and/or manipulations in a well  
A method and device for carrying out operations and/or manipulations in a well which has a casing with the well being and drilled in geological formations having at least two distinct zones. The...
4926942 Method for reducing sand production in submersible-pump wells  
A method for minimizing the production of sand in submersible-pump well applications is disclosed, in which control of fluid production rates is used to maintain a low rate of change of formation...
4919207 Method for drawing up special crude oil  
The present invention is directed to a method for drawing up a special crude oil which is characterized by comprising the steps of extracting and separating a gas oil from a crude oil containing a...
4898244 Installation of downhole pumps in wells  
A downhole pump and perforating gun are run simultaneously down a well on a tubing string and the gun is fired under underbalanced conditions. A slip joint reduces vertical mechanical shock...
4890672 Method of controlling the flow of landfill gas from sanitary landfills and apparatus for performing the method  
A method of controlling the recovery of landfill gas from a sanitary landfill and apparatus for performing the method. Landfill gas, which mainly consists of methane and carbon dioxide, is formed...
4878540 Apparatus and process for pumping fluid from subterranean formations  
Apparatus for pumping fluid from a subterranean reservoir. The apparatus has in combination a well casing and a hollow tube disposed concentrically within the well casing. Secured to the end of the...
4867242 Method and apparatus for breaking gas lock in oil well pumps  
A gas lock breaker for oil well pumps includes a stationary barrel with a standing valve on the bottom, a reciprocating piston in the barrel with a traveling valve on the bottom of the piston, an...
4848471 Method and apparatus for transporting unprocessed well streams  
System for the transport of an unprocessed well stream comprising a multiphase, multicomponent mixture over long distances from one or several subsea wells A to a terminal F. The well stream, which...
4842074 Gas storage well safety system and method  
A well safety system with two surface controlled subsurface safety valves. The invention allows various alternatives for controlling injection into and production from a gas storage well. For...
4838353 System for completing and maintaining lateral wells  
A system for conducting operations in a well penetrating laterally into a subsurface producing formation. A first string extends from the surface down the well through a downhole pump and then a...
4832127 Method and apparatus for producing viscous crudes  
To assist electric submersible pumps in producing highly viscous crudes from oil wells, injection water is conveyed to the pump assembly, injected into the crude, and mixed with it to form an...
4830110 Method for completing wells in unconsolidated formations  
Unconsolidated formations may be produced to yield hydrocarbons and other fluids by forming an openhole wellbore in the region to be produced, cleaning the wellbore face with a low solids content,...
4830113 Well pumping method and apparatus  
A well pumping method and apparatus whereby fluids such as water or oil are pumped out of a well casing in an annular space between an electrical power cable and an associated protective metal coil...
4828036 Apparatus and method for pumping well fluids  
A fluid driven downhole apparatus is disclosed for pumping a fluid, such as crude oil, from a well in which a housing contains a twin rotor screw type positive displacement motor and a twin rotor...
4823880 Gaswell dehydrate valve  
A threaded sleeve valve to facilitate the removal of water from gas wells having two or more gas productive zones disposed vertically along their bore. The valve is adapted to form a connection...
4815536 Analysis of multi-phase mixtures  
A method for continuous analysis of mixtures for determining selective properties of components in the mixture flowing along a flow path includes the steps of, firstly, directly measuring and/or...
4789031 Gas anchor and treating device  
A gas anchor is attached to the lower end of a downhole pump located downhole in a borehole so that fluid must flow from the lower borehole, into the gas anchor, to the suction of the pump, and to...
4778007 Producing sour natural gas  
A sour natural gas is produced via a well system comprising a vertical well section and a horizontal drainhole section extending through the reservoir formation. Formation plugging due to in-situ...
4776401 Foot valve for pumping wells  
Methods of and apparatus for plugging a well below a rod pump to permit bleeding off the pressure thereabove so that the pump can be removed from the well for replacement or repairs and reinstalled...
4768595 Oil recovery apparatus using an electromagnetic pump drive  
An apparatus for recovering oil from a subterranean hydrocarbon-bearing formation wherein a subsurface pump in the wellbore is driven by an electromagnet submersed in the wellbore above the pump.
4759407 Inverted working barrel and seat and method of manufacturing the same  
A thin walled (e.g., 1/16th inch), cylindrical, stainless steel inverted working barrel and seat adapted to concentrically insert into and sleeve upwardly within the lower end of a conventional oil...
4751969 Apparatus and method for removing fluids from a well  
Apparatus and method for removing fluid from a well. The apparatus is mobile, and includes a power winch mounted on a mobile support means with a cable attached to the winch. A constant tension...
4749034 Fluid mixing apparatus for submersible pumps  
A well pump assembly has a tube extending into the well for delivering water to a point below the pump to reduce the viscosity of the oil being pumped. The downhole motor that drives the pump is...
4745977 Method for resisting corrosion in geothermal fluid handling systems  
A method for resisting corrosion while conducting a flow of hot corrosive geothermal fluid, particularly brine, comprises flowing the fluid through fluid flow conducting elements, such as...
4741397 Jet pump and technique for controlling pumping of a well  
A surface installation exhausts gas from the annulus of a pumping oil well. The installation includes a tank containing fresh water, a pump-motor arrangement taking fresh water from the tank and...
4739830 Method of collecting geothermal steam using AE/MA measurement  
A method of collecting geothermal steam using Acoustic Emission Microseismic Activity (AE/MA) measurement includes the steps of (a) surveying an AE wave emitted in subsurface cracks to obtain the...
4730672 Method of removing and controlling volatile contaminants from the vadose layer of contaminated earth  
A method and apparatus of collecting volatile contaminants from the vadose layer of earth. The apparatus is a closed-loop device which includes one or more contaminant withdrawal wells surrounded...
4682655 Slotted housing having multiple seats for supporting and locating submersible pumps in deep wells  
A well pumping system operative selectively to pump fluids (1) through the production tube and the annular space between the production tube and the well casing simultaneously (2) through the...
4676308 Down-hole gas anchor device  
The present invention is used to separate gas from liquid while being placed downhole in a hydrocarbon producing well. It essentially comprises a means to divert hydrocarbon production fluid from...
4674572 Corrosion and erosion-resistant wellhousing  
Corrosion and erosion of metal well casings due to production of corrosive well fluids, especially geothermal brines, is avoided by producing corrosive fluids through an impermeable cement...
4649994 Installation for bringing hydrocarbon deposits into production with reinjection of effluents into the deposit or into the well or wells  
An installation is provided for bringing into production hydrocarbon deposits with reinjection of effluents into the deposit or into the well or wells and a process for using this installation....
4643258 Pump apparatus  
Pump apparatus and method in which gaseous fluids that develop in the pumping chamber of a down hole pump can be removed during normal operation of the device to prevent gas-lock and to avoid...
4624319 Method and apparatus to improve well water quality  
A suction control tail for use with the water pump to restrict water velocities in a well hole and thereby prevent the instrusion of sand is provided by a two-layer suction control element, or such...
4614232 Device for delivering flowable material  
A device for delivering flowable materials from a production bore (2), consisting of a source of pressurized medium (1), a pressurized medium conduit (3) for conducting the pressurized medium into...
Matches 251 - 300 out of 387 < 1 2 3 4 5 6 7 8 >