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Matches 351 - 400 out of 778

Document Document Title
WO2005017299A3
A piston pump for submerging in an oil well, consisting of four pistons that, by means of a fixed interlock (105) between two opposing pistons and a cog wheel interlock (104) between these and the two other pistons, get two oncoming pist...  
WO2004094770B1
A downhole pump includes a pump barrel defining a pumping chamber having a first end and a second end, a first one-way valve positioned at the first end of the pumping chamber, a second one-way valve positioned at the second end of the p...  
WO2005001231A3
A submersible pump (10) for attachment to the lower end of a well pipe discharge tube (100) for insertion in liquid includes a stationary collecting tube (20) for collecting the liquid and an upward and downward reciprocating pumping tub...  
WO/2005/017299A2
A piston pump for submerging in an oil well, consisting of four pistons that, by means of a fixed interlock (105) between two opposing pistons and a cog wheel interlock (104) between these and the two other pistons, get two oncoming pist...  
WO2004094770A3
A downhole pump includes a pump barrel defining a pumping chamber having a first end and a second end, a first one-way valve positioned at the first end of the pumping chamber, a second one-way valve positioned at the second end of the p...  
WO/2005/017354A2
A portable pump includes a rotating elliptical plate mounted on a rotating shaft, an elliptical plate follower with rollers or bearings positioned on the top and bottom surfaces of the rotating elliptical plate at a fixed distance from t...  
WO/2005/015024A1
A pump comprises pumping means (1) of a fluid and galvanic protection means (3, 4) arranged to protect against corrosion said pumping means (1), said galvanic protection means (3) comprising sacrificial anode means (4) arranged in direct...  
WO/2005/001231A2
A submersible pump (10) for attachment to the lower end of a well pipe discharge tube (100) for insertion in liquid includes a stationary collecting tube (20) for collecting the liquid and an upward and downward reciprocating pumping tub...  
WO2004065792A3
The present invention generally provides apparatus and methods of operating a pumping system. The pump control apparatus includes a first sensor for measuring strain on a structure of the well pumping system and a second sensor for measu...  
WO/2004/099618A1
The inventive pumping plant can be used for pump engineering, the mining, petroleum and gas industries for extracting liquid from wells. Said pumping plant is provided with two cavities which are arranged in each hollow rod, isolated fro...  
WO/2004/094770A2
A downhole pump includes a pump barrel defining a pumping chamber having a first end and a second end, a first one-way valve positioned at the first end of the pumping chamber, a second one-way valve positioned at the second end of the p...  
WO/2004/074637A2
The present invention is a cylindrical linear fluid motor comprising a plurality of reciprocating rotary piston sleeve intermediate an inner coaxial hollow drive shaft and an outer coaxial cylindrical housing. Rotating disc valves at bot...  
WO/2004/065791A1
A gravity water pump pumping various kinds of fluids, including a waterfall, river water and drizzle, and gases heavier than air, using gravity and producing kinetic and potential energy is provided. As fluid falls into a set of a piston...  
WO/2004/065792A2
The present invention generally provides apparatus and methods of operating a pumping system. The pump control apparatus includes a first sensor for measuring strain on a structure of the well pumping system and a second sensor for measu...  
WO/2004/040137A1
A pumpjack speed control system includes a user interface, a controller and a variable speed drive. The user interface includes a mathematical representation of the pumpjack geometry which permits the conversion of rod speed profiles to ...  
WO2003031815B1
The pump and pump system (10) of the present invention is designed to remove liquids, gas, sand, and coal fines from gas and/or oil well bores from close to the rock face. The new pump will utilize energy for the "engine" from the surfac...  
WO/2004/001185A1
The invention discloses a pumping unit with a curved and folded beam, comprising a base (1), a motor (2), a transmission mechanism (4), a crank-link assembly (5), a balance weight for the crank (10), a frame (9), a cable hanger assembly ...  
WO2003031815A3
The pump and pump system (10) of the present invention is designed to remove liquids, gas, sand, and coal fines from gas and/or oil well bores from close to the rock face. The new pump will utilize energy for the "engine" from the surfac...  
WO/2004/001184A1
The invention relates an oil pumping unit comprising a support pipe (1), a pumping rod (4), a balance weight (7), a motor and a transmission system installed in the support pipe (1). The transmission system comprises a nut and a screw be...  
WO/2003/093636A1
The invention relates to oil and gas production and can be used for lifting liquid from wells by gas energy. The inventive flying valve comprises a tubular body, a detachable element in the form of a body of rotation and stoppers limitin...  
WO/2003/083303A1
The inventive device comprises a submerged electric motor provided with a hydroprotection and cinematically connected to a driven pump, an operating pump actuated by a hydraulic engine which comprises a reciprocating mechanism for moving...  
WO/2003/078837A1
A hydraulic automatic boosting pump is composed of a fixing joint, casing a reversing valve, a guide valve, a motor-drive automatic device for changing directions, a driving cylinder, a boosting cylinder and super high pressure pipes whi...  
WO/2003/071095A2  
WO/2003/048572A1
Electrically (DC) actuated linear drice pumps and pump systems suitable for downhole/subterranean use, adapted to be powered by (e.g.) solar power. In preferred embodiments, a piston member is connected to an outer pump casing by an elas...  
WO/2003/048578A1
A motor speed controller (100) identifies the position of a pump rod (14). At one or more critical positions of the rod, the motor speed controller (100) adjusts the speed of the motor to change the movement of the pump rod (14). The cri...  
WO/2003/033861A1
The invention relates to oil industry, in particular to production well servicing by means of deep insert sucker-rod pumps. The insert pump is removed from a well. Said pump being replaced and run into an oil-well tubing (2), an anchor c...  
WO2002068788A3
A well pumping unit 30 includes support 11, linear motor 25 having primary motor complex 8 and secondary motor complex 9, polished rod chain 3, polished chain wheel assembly 4, bottom support chain wheel 10, counterweight chain wheel 5, ...  
WO2002086322A3
A fluid controlled pumping system includes a pumping unit (12) disposed within a fluid cavity (13). The pumping unit (12) includes a passage (60) extending to a suction end of the pumping unit. The system also includes a pressure source ...  
WO/2003/031815A2
The pump and pump system (10) of the present invention is designed to remove liquids, gas, sand, and coal fines from gas and/or oil well bores from close to the rock face. The new pump will utilize energy for the 'engine' from the surfac...  
WO/2002/101241A1
A positive displacement pump for pumping fluids from a downhole formation to the earth's surface is provided. The pump (100) first comprises a plunger (130). The plunger is reciprocated axially within the wellbore by a linear actuator (3...  
WO/2002/089307A1
The present invention relates to a circuit for providing conditioned alternating current to a motor for running a well pump reciprocating motor which experiences uneven torque. A system is provided for conditioning the primary electrical...  
WO/2002/086322A2
A fluid controlled pumping system includes a pumping unit (12) disposed within a fluid cavity (13). The pumping unit (12) includes a passage (60) extending to a suction end of the pumping unit. The system also includes a pressure source ...  
WO/2002/081860A1
Apparatus and system control for the removal of fluids and gas from a well comprising winch means (56) for removing the oil (18), a temporary storage tank (22), a bailer tube (90), a bailer tube housing assembly (28), axially aligned wit...  
WO/2002/075105A1
The invention discloses a pumping unit comprising a support frame (11), a linear electric motor for driving the unit having a runner (7) and six stators (9), two chains (3, 6), two wheels (4, 5) and a weight (7). The support frame (11), ...  
WO/2002/068788A2
A well pumping unit (30) includes support (11), linear motor (25) having primary motor complex (8) and secondary motor complex (9), polished rod chain (3), polished chain wheel assembly (4), bottom support chain wheel (10), counterweight...  
WO/2002/064941A1
A bailer device (45) and method capable of recovering liquids and agas simultaneously. The bailer device (45) consists of a bucket-type device (42) attached to an end of a line (8). The bucket-type (42) device is then raised and lowered ...  
WO/2002/057551A1
Method related to the hydraulic dredging of sediment from the sea bottom, the bottom of water dams or the like, inclduding a first operational step where sediment is sucked or pumped through a hose or pipe (2) to a second level located b...  
WO2002031311A3
The present invention generally provides a gas operated pump (30) having a removable and insertable valve (300, 500, 700). In one aspect, the invention includes a pump housing having a fluid path (325) for pressurized gas and a second fl...  
WO/2002/046613A1
A rodless pump is disclosed which is connected to a pressure source via a conduit. In a common oilfield application the pump would be connected to the bottom of a tubing string within the reservoir fluid to be produced. A pressure source...  
WO/2002/031311A2
The present invention generally provides a gas operated pump (30) having a removable and insertable valve (300, 500, 700). In one aspect, the invention includes a pump housing having a fluid path (325) for pressurized gas and a second fl...  
WO2001089068A3
A sine wave filter including an inductor for each phase (three inductors) and three delta- or Y-connected capacitors is employed within a borehole power system, coupled within a three phase power system at the surface between the output ...  
WO/2002/004813A1
A water supply for lifting water by a motor pump driven by power converted by an inverter from the output power of a solar battery is characterized in that the motor for driving the motor pump is a DC brushless motor having no sensor for...  
WO/2002/002947A1
An isolation container (100) with a downhole electric pump assembly has an annular housing with an axial inlet and outlet. The pump (104) is located within the container. The assembly includes an electric pump (108) positioned above and ...  
WO/2001/096708A1
A system for pumping water from a well (32) drilled into an underground water source (44) that is operable in association with the windmill (10) having a tower frame (14), a wind driven turbine (12), and a reciprocating pump shaft (16) o...  
WO/2001/089068A2
A sine wave filter including an inductor for each phase (three inductors) and three delta- or Y-connected capacitors is employed within a borehole power system, coupled within a three phase power system at the surface between the output ...  
WO/2001/081764A1
A lift pump is designed so that the movement of the elongate lifting member (1) up and down in a wellbore causes a compression of an air mass in a tank (3, 9). The energy in this compressed air mass is used for carrying out the movement ...  
WO/2001/057399A1
Fluid pumping apparatus for pumping fluids from a well comprising a downhole pump disposed near the lower end of a production string and including a tubular pump barrel (20) and a tubular pump plunger (30), concentrically disposed in the...  
WO/2001/055552A1
This invention relates to an oil pumping unit with a counterweight whose centroid can be adjusted comprising: a power supply (1), a belt transmission mechanism (3), a speed reducer (4), a crank (5), a connecting rod (6), a cross beam (10...  
WO/2001/034978A1
This invention relates to an oil pumping unit without a walking beam comprising an electric motor (1) and a speed reducer (3) driven by the motor (1). Through a crank (4), an output of the speed reducer (3) drives a planetary gear (5) en...  
WO/2001/016487A1
This invention relates to a pumping unit comprising: a base (1) and a rack (2); an electric motor (17) with varying frequency power for the pumping unit through a speed reducer (5); a driving hub (7A) connector with said speed reducer (5...  

Matches 351 - 400 out of 778