Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 451 - 500 out of 862

Document Document Title
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...  
WO/2001/011187A1
A pumping system comprises a pump barrel (526) that is adapted to be placed into a well casing. A plunger (536) is reciprocably positioned within the pump barrel (526) and has an open top end (532), a bottom end (534), and a traveling va...  
WO/2001/006125A1
This invention relates to a mechanical oil recovery method and system with a sucker rod pump. Through the method the technological parameters are directly calculated based on the lowest power loss or the lowest cost principle. The method...  
WO/2001/000991A1
The present invention relates to an oil pumping unit comprising a transmission device (12) and a balance arm (1) with one end connected with a beam (6) by two shafts (18; 19) and the other end connected with a weight (17). Both the balan...  
WO/2000/079130A1
Vibratory pump provided with diameter smaller than the diameter normally observed, proper to house the pump inside the tubular well; said pump is still provided with cooling device of the drive solenoid set (10), that consists in inverti...  
WO/2000/066892A1
A pumping jack drive system using an induction motor whose speed is controlled by a variable-voltage, variable-frequency power supply comprises means for detecting the speed of the induction motor and an instantaneous value of the second...  
WO/2000/050774A1
A positive-displacement pump (lifting pump) comprises a pump housing (10) with a pump chamber (24) having an inlet (21) and an outlet passage (28) controlled by an outlet check valve (17); a displacement member (13) which delimits the pu...  
WO/2000/025000A1
The invention relates to a drive head comprising a housing (12) with two passages (24, 26), which face away from one another, for a rod assembly (10) and a rotary-driven sleeve (30). Said sleeve surrounds a section of the rod assembly (1...  
WO/2000/025026A1
The invention relates to submersible pump with a transmission (10) and a compensator (24). The transmission (10) comprises a transmission housing (12) filled with a lubricating fluid. Said transmission housing accommodates a driven input...  
WO/2000/020758A1
The bob system for alternating pumps comprises a pyramidal tower (8) (fig. 1) with a truncated summit (5 and 6) (fig. 1) wherein a single acting hydraulic cylinder (2) (fig. 1) can rest, which are installed at the vertical of a water or ...  
WO/1999/064742A1
A fluid pumping system includes a number of identical stages (20, 30, 40, 50). Each stage has a fluid chamber (22) having a top end (26) with an air aperture and a bottom end (25) with a fluid aperture. An air line (16) is connected to t...  
WO1999039422A9
The present invention relates to a motor for a submerged pump, wherein said motor comprises a rotor (5) as well as a body (1) having the magnetic conductor (2) of a stator mounted therein. The stator has a dented area (8) comprising groo...  
WO/1999/047811A1
The invention relates to an apparatus for high pressure pumping or homogenizing liquids. The apparatus comprises a drive motor (1) with transmission mechanism and a pump section. The transmission mechanism comprises a belt train (6), a g...  
WO/1999/039422A1
The present invention relates to a motor for a submerged pump, wherein said motor comprises a rotor (5) as well as a body (1) having the magnetic conductor (2) of a stator mounted therein. The stator has a dented area (8) comprising groo...  
WO1999019623A3
The present invention pertains to the field of pump manufacturing and more precisely relates to hydraulic diaphragm pumps principally used for pumping a liquid from deep bore-holes. This invention can be used in the mining industry, in a...  
WO/1999/032813A1
An arrangement to guide a reciprocating shaft (10) e.g. a polished rod extending form a pump in a well-head. A stuffing box comprising a base (11) is adapted to be supported from a housing and configured to surround the shaft (10). A sea...  
WO1999018354A3
A walking beam compressor has a rod collar assembly attached to the top cap of the compressor cylinder with bearings which reduce side loading on the seals and bearing surfaces in the top cap. A top cap assembly supports a pair of vertic...  
WO/1999/024717A1
The invention relates to a drive head, comprising a housing (12) with passages (24, 26) for the rod assembly (10) and a rotary-driven sleeve (30) which is arranged in said housing. Said sleeve (30) surrounds a section of the rod assembly...  
WO/1999/019623A2
The present invention pertains to the field of pump manufacturing and more precisely relates to hydraulic diaphragm pumps principally used for pumping a liquid from deep bore-holes. This invention can be used in the mining industry, in a...  
WO/1999/018354A2
A walking beam compressor has a rod collar assembly attached to the top cap of the compressor cylinder with bearings which reduce side loading on the seals and bearing surfaces in the top cap. A top cap assembly supports a pair of vertic...  
WO/1999/007979A1
A down-hole production pump and circulation tool (1, Fig. 1), on a production string end (Fig. 3), including combined traveling valve assembly bottom connector (10) and fishing tool section (20, Fig. 2) engaging gripping pins (51) for tw...  
WO/1999/004166A1
The present invention relates to a pumping apparatus that comprises an additional system for supplying it with a driving fluid. This system comprises a device for the inlet of the driving fluid and for the outlet of gaseous medium as wel...  
WO/1998/055766A1
A hydraulic pump jack drive system (1) for reciprocating an oil well pump rod (6). The drive system comprises at least one hydraulic well head cylinder (2), a reversible flow hydraulic pump (7), and a master cylinder (8). The master cyli...  

Matches 451 - 500 out of 862