Abstract: A low-profile wafer stuffing box includes a plurality of replaceable seals located within a single, unitary body. The body includes a central bore with a plurality of internal channels, a first internal channel located proximate a top surface of the body, a second internal channel located proximate a bottom surface of the body, and a third internal channel being located between the first internal channel and the second internal channel. An internal fluid corridor extends from the front wall through the stuffing box body and into the third internal channel. The low-profile wafer stuffing box may be used on reciprocating piston pumps.

Abstract: As may be used in a positive displacement pump system, a capped stuffing box assembly includes a stuffing box mountable to a discharge tee to prevent pumped fluid from escaping collection via the discharge tee. The stuffing box is capped by a drain cup that may be releasably mounted to the stuffing box and fixedly mounted to a drive pump motor frame, the drain cap having a drain port to communicate leakage upon failure or pre-failure of the seals in the stuffing box. Upon such failure, the stuffing box may be removed from the drain cap and replaced, while alignment between the actuating rod, drive motor, pump actuator, and drain cap is maintained.

Abstract: A pump for pumping liquid from a well having a continuous flexible riser pipe that does not have a coil memory and a flexible actuating rod disposed within the flexible riser pipe. A piston valve unit is disposed at one end of the riser pipe and drivably connected to the actuating, the piston valve unit having an outer diameter that is greater than the inner diameter of the continuous riser pipe.

Abstract: A short stroke piston pump for recovering oil and/or water from marginal stripper wells, tar sands and coal beds includes a motor connected to one end of a drive rod, the motor capable of moving the drive rod in a generally up and down direction. A piston is connected to another end of the drive rod, the piston and drive rod are disposed in a riser pipe, the piston is adapted to transport fluid up the riser pipe as the piston moves up and down in the riser pipe.

Abstract: A pump for pumping liquid from a well having a continuous flexible riser pipe that does not have a coil memory and a flexible actuating rod disposed within the flexible riser pipe. A piston valve unit is disposed at one end of the riser pipe and drivably connected to the actuating, the piston valve unit having an outer diameter that is greater than the inner diameter of the continuous riser pipe.

Abstract: A drive piston valve and a foot valve may each have a valve seat in the form of a non-compressible (e.g., metal or ceramic) sealing plate having a compressible, resilient mating element that retains the ring at an inlet portion of a check valve having a housing formed of another material, such as a low-wear resin material. In some examples, the sealing plate may have a truncated corner for engaging a check ball in its closed positioned while avoiding damage to the check ball or plate resulting from a chemical encrustation build-up or other containment at the sealing edge.

Abstract: As may be used in a positive displacement pump system, a capped stuffing box assembly includes a stuffing box mountable to a discharge tee to prevent pumped fluid from escaping collection via the discharge tee. The stuffing box is capped by a drain cup that may be releasably mounted to the stuffing box and fixedly mounted to a drive pump motor frame, the drain cap having a drain port to communicate leakage upon failure or pre-failure of the seals in the stuffing box. Upon such failure, the stuffing box may be removed from the drain cap and replaced, while alignment between the actuating rod, drive motor, pump actuator, and drain cap is maintained.

Abstract: Magnesium oxide is included in a bentonite clay anti-friction composition in an amount of 0.025-0.25% based on the dry weight of the clay to substantially improve the efficiency of underground cable or pipe installation. The anti-friction composition is applied between an outer surface of the cable or pipe and tunnel walls to substantially and unexpectedly reduce the amount of force, e.g., hydraulic pressure, necessary to push or pull the cable or pipe into its intended location within the tunnel. The composition includes a water-swellable colloidal smectite clay, such as bentonite, and magnesium oxide in an amount of 0.025-0.25% based on the dry weight of the clay. In another embodiment, the composition also includes a polymeric fluid loss reduction agent, such as carboxymethyl cellulose to decrease the amount of the clay composition absorbed into the tunnel walls. Soil is extracted underground to form a tunnel and the cable or pipe is forced by a hydaulic jack, into the tunnel.

Abstract: Magnesium oxide is included in a bentonite clay anti-friction composition in an amount of 0.025-0.5% based on the dry weight of the clay to substantially improve the efficiency of underground cable or pipe installation. The anti-friction composition is applied between an outer surface of the cable or pipe and tunnel walls to substantially and unexpectedly reduce the amount of force, e.g. hydraulic pressure, necessary to push or pull the cable or pipe into its intended location within the tunnel. The composition includes a water-swellable colloidal smectite clay, such as bentonite, and magnesium oxide in an amount of 0.025-0.5% based on the dry weight of the clay. In another embodiment, the composition also includes a polymeric fluid loss reduction agent, such as carboxymethyl cellulose to decrease the amount of the clay composition absorbed into the tunnel walls. Soil is extracted underground to form a tunnel and the cable or pipe is forced by a hydraulic jack, into the tunnel.