Abstract: An artificial oil lifting unit uses an endless olephilic absorbent belt, driven by a surface equipment and tensed by a down hole equipment placed in the well production casing. The said absorbent belt (1) is looped over a central pulley (2) from a driving and collecting module (C) and driven by a double toothed belt (4) looped over six pulleys from which five are free (6,7,8,9 and 10). One is a driving pulley (5) placed over an entry shaft (36), the double toothed belt (4) being looped also over the oil absorbent belt on the central pulley and tensed with two identical systems (I) with pulleys commanded from the exterior of the case (13).

Abstract: The invention disclosed provides a drive head assembly for a fluid conveyor system that propels a fluid entraining conveyor through a well bore to carry fluids to the surface. The invention is comprised of a pair of synchronized follower wheels connected to a set of counter rotating sheaves. A fluid entraining conveyor is wrapped in a “figure-8” conveyor path around the sheaves in a plurality of coaxial grooves and around a distal sheave located in the fluid in the well bore. The coaxial grooves incorporate a unique shape which in conjunction with the wrap pattern provide improved tractive qualities and thus reduce tension in the conveyor and increase the durability of the conveyor. The conveyor can run at increased speeds and with no tension on the downward portion of the conveyor resulting in higher efficiency and less down time due to breakage.

Abstract: The invention disclosed provides a drive head assembly for a fluid conveyor system that propels a fluid entraining conveyor through a well bore to carry fluids to the surface. The invention is comprised of a pair of synchronized follower wheels connected to a set of counter rotating sheaves. A fluid entraining conveyor is wrapped in a “figure-8” conveyor path around the sheaves in a plurality of coaxial grooves and around a distal sheave located in the fluid in the well bore. The coaxial grooves incorporate a unique shape which in conjunction with the wrap pattern provide improved tractive qualities and thus reduce tension in the conveyor and increase the durability of the conveyor. The conveyor can run at increased speeds and with no tension on the downward portion of the conveyor resulting in higher efficiency and less down time due to breakage.

Abstract: The invention disclosed provides a drive head assembly for a fluid conveyor system that propels a fluid entraining conveyor through a well bore to carry fluids to the surface. The invention is comprised of a pair of synchronized follower wheels connected to a set of counter rotating sheaves. A fluid entraining conveyor is wrapped in a “figure-8” conveyor path around the sheaves in a plurality of coaxial grooves and around a distal sheave located in the fluid in the well bore. The coaxial grooves incorporate a unique shape which in conjunction with the wrap pattern provide improved tractive qualities and thus reduce tension in the conveyor and increase the durability of the conveyor. The conveyor can run at increased speeds and with no tension on the downward portion of the conveyor resulting in higher efficiency and less down time due to breakage.

Abstract: The invention relates to an improvement to conveyors comprising moving elements which slide over fixed elements such that at least one moving element made of a polyamide-based blend (A) slides over a fixed element made of polyacetal and/or such that at least one moving element made of polyacetal slides over a fixed element made of a polyamide-based blend (A).

Abstract: A continuous-belt drilling mud separation unit is removably mounted in a box-like housing disposed in the flow path of drilling mud or drilling fluids and is operated by a motor on the housing. The separation unit includes a generally rectangular frame, a tensioning system, and a wide continuous belt in the form of a mesh screen, chain, self-cleaning chain link belt, or combination chain link belt and wire mesh screen which extends around rollers or sprockets and is driven in a continuous loop moving along the longitudinal axis of the frame. As drilling mud or drilling fluids are conducted onto the moving belt, liquids and particles smaller than the openings in the belt pass through the openings and liquids and particles larger than the openings are transported on the moving belt and are discharged off of one end as the belt completes its path.

Abstract: A rope pump for conveying fluid-like material from a reservoir to a select location includes an endless rope, pulleys for forming the endless rope into a loop extending between the reservoir and the select location and an improved drive for driving the endless rope about the pulleys. The improved drive includes first and second sheaves each having a plurality of circumferencial grooves and an axis of rotation. The first and second sheaves are mounted to shafts for rotation about their respective axes of rotation. The sheaves are radially spaced with the grooves of the first sheave aligned with the grooves of the second sheave and the respective axes of rotation being in parallel. A motor is provided in operative association with one of the first and second sheaves for rotating the sheave about its axis.

Abstract: An improved drive head for use in transporting materials has a frame for mounting near a tubing orifice, a drive wheel and second wheel rotatably mounted on the frame. Each of the wheels are adaptable to receive a fluid entraining conveyor. The drive head causes the conveyor to move through a predetermined conveyor path on which the conveyor winds about the drive wheel through at least a majority of its surface, and preferably 330.degree.. The radius of a down-conveyor conveyor track of the second wheel is preferably slightly greater than the radius of the drive wheel conveyor track. Preferably, tires are provided which are mounted on wheel hubs of the drive and second wheels, and these tires may be made of an elastomer having a higher coefficient of friction than the preferably plastic drive and second wheel hubs. The preferred embodiment includes a third wheel which is disposed on the conveyor path to be closer to the orifice than the second wheel.

Abstract: A vertical tensioning and anti-rotational device for use with a single continuous rope conveyor lifting system, the lifting system having a series of powered pulleys disposed at the top of a well for continuously driving a rope in a closed loop into the well, into and out of downhole fluids, and back to the top of the well, carrying a portion of such fluids out of the well. The device includes a tubular body open at one end, and a tension bar telescoped into the open end. The tubular body and tension bar member are adapted to fit diametrically into a well bore. A spring biases the tension bar member away from the tubular body. Extension bar members are disposed on the opposite ends of the tubular body and tension bar member, and extend longitudinally axially along the walls of the well bore. Sharp-edged rollers are disposed on the upper and lower ends of the extension bar members. The spring biases the rollers against the walls of the well bore, and the rollers prevent the device from rotating.

Abstract: Apparatus for cleaning a bath of liquid, in particular a metal-working machine lubricant and/or coolant, by means of a conveyor belt which is fed around a drive roller, driven by a motor, in a chamber of a housing and dips into the bath of liquid, characterized in that the conveyor belt is provided with a stripper having a stripping edge directed oppositely to the direction of rotation of the conveyor belt.

Abstract: 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 collector incorporates a plurality of rollers which may be aligned in a configuration that enables its ideal placement at any depth within a confined space such as a surface-sealed well bore. The rollers cooperate to remove the low-viscosity hydrocarbons from the endless belt without causing premature squeezing of the belt so that those hydrocarbons can be collected in a specific gravity separating receptacle for separating the hydrocarbons from any water in order to enhance the purity of the collected hydrocarbons. The collector is also provided with a single motor which drives not only the endless belt through the rollers, but also a piston pump for pumping collected hydrocarbons to the surface.

Abstract: A conveying apparatus for lifting fluid includes a flexible conveyor assembly having a pair of flexible tubes forming respective tubular walls and an endless flexible rope conveyor extending through respective passages defined by the tubular walls. The rope conveyor has riser and return portions and upper and lower end portions. A pair of roller members and a motion-producing device are provided for mounting and moving the rope conveyor about an endless path with the riser and return portions of the conveyor moving in opposite directions relative to one another through the different passages. The riser portion of the rope conveyor and the one tubular wall of the flexible tube surrounding it form an annulus between them extending from a lower inlet end to an upper outlet end of the flexible tube.

Abstract: An apparatus and method provide for the efficient pumping of fluids from an earth formation penetrated by a wellbore, and simultaneously provide for clean out of channels associated with the producing zone of the formation.In one aspect, an endless belt of two plies of material is driven into and from a pool of oil and water via a collection station at the earth's surface. Also within the collection station is a squeezing subassembly. Broad surface contact between the squeezing subassembly and belt coupled with an almost complete absence of scraping action, reduce wear of the belt.In another aspect, a series of drive drums are also positioned within the collection station, two of which sandwich the squeezing subassembly. They provide driving pressure to the belt.In yet another aspect, pluralities of fastener assemblies are used to tie the two plies of belt material together along coincident broad surfaces.

Abstract: 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 cable. The flights on the cable fit into the flight receiving pockets of the pulleys for transmitting motion between the pulleys and the cable. Each of the flights are formed by two half-sections that are mounted together about the cable. Such a transmission can be used as a lift for liquid. One pulley is located in a source of liquid and at least one pulley is located above the liquid source. The cable has an ascending section and a descending section. The flights are spaced to maintain a column of liquid surrounding the ascending cable section.

Abstract: The invention relates to a device for picking up oil from water and from the surface of water, the device being installed to a water craft and comprising at least one collecting means passing around rolls and being installed obliquely, there being at the upper end of the collecting means devices for removing the oil collected by the collecting means and for directing it into a tank in the water craft. The object is especially to eliminate the disadvantages of previously known devices of the mat type that, when the craft moves, the mat tends to direct water and, along with it, also oil to the sides, past the mat. In accordance with the invention the device comprises a number of parallel loop-like collecting means, each of which is made up of pieces provided with upwards and sidewards extending bristles and fixed to the chain, the sidewards-directed bristles extending sufficiently far to come into contact with each other, but allowing water to flow without hindrance through the device.

Abstract: An endless chain of link members having oil accumulating cavities disposed therein is circulated in a well at a controlled rate carrying oil to the surface where same is dumped and removed by brush and wipers.

Abstract: A double-walled rotary tubular conveyor includes a stabilizing drive means which prevents the conveyor tube from moving backward, forward or sideways. Two pairs of driven rollers are located in the hollow interior of the conveyor tube. A rubber drive wheel located on the outside of the conveyor tube presses through the tube against the driven rollers. The drive wheel includes a protruding circumferential disc around its middle which is received in the spacing between the four driven rollers through the conveyor material. Two or more synchronized double-walled rotary tubular conveyors can be employed as drive conveyors for a driven tubular conveyor of unlimited length.

Abstract: A conveying device having a flexible member with inside and outside surfaces and first and second end positions forming inlet and outlet orifices. Support mechanisms disposed intermediate the inside and outside surfaces and a drive mechanism for engaging the flexible member and propelling it in a continuous closed loop such that the inside surface becomes the outside surface and the outside surface becomes the inside surface; that the relative shape and orientation of the first and second end portion is not altered; and, that the inside surface and the outside surface move in substantially opposite directions.

Abstract: A conveying apparatus for lifting fluid includes a flexible conveyor assembly having a pair of flexible tubes forming respective tubular walls and an endless flexible rope conveyor extending through respective passages defined by the tubular walls. The rope conveyor has riser and return portions and upper and lower end portions. A pair of roller members and a motion-producing device are provided for mounting and moving the rope conveyor about an endless path with the riser and return portions of the conveyor moving in opposite directions relative to one another through the different passages. The riser portion of the rope conveyor and the one tubular wall of the flexible tube surrounding it form an annulus between them extending from a lower inlet end to an upper outlet end of the flexible tube.