A corrosion testing device comprising a coupon holder for a sucker rod of a pump system and at least one coupon for corrosion testing, wherein the coupon holder comprises a holder body having an outer body surface and an inner contact surface, which inner contact surface is placeable on an outer rod surface of the sucker rod and defines a longitudinal body axis of the holder body, the at least one coupon is attached to the holder body and positioned at the outer body surface and at a radial coupon distance from the longitudinal body axis, the outer body surface comprises at least one guiding surface part located at a radial surface distance from the longitudinal body axis, and the radial surface distance is larger than the radial coupon distance.

The disclosure is directed to top caps for gear rod rotators and polished clamps. Disclosed top caps include an elongated top cap body extending along a central vertical axis, the top cap body including a top face, a bottom face, and an exterior perimeter surface defining an outer perimeter of the top cap body, and a polished rod opening extending along the central vertical axis of the top cap body, the polished rod opening defining an interior circumferential surface of the top cap body and configured to receive a polished rod. Additionally, disclosed top caps include a nesting region along the top face, the nesting region configured to receive at least a portion of the polished rod clamp, and a mounting rim on the bottom face and extending outwardly from the bottom face along a longitudinal axis of the top cap body, the mounting rim including a mounting rim outer diameter, a mounting rim inner diameter, and a mounting rim bottom face. Disclosed top caps also include a top cap sensor mounting port hole configured to receive a top cap sensor module comprising a sensor including a position sensor, a temperature sensor, and a vibration sensor.

A downhole power generating apparatus comprising a low pressure chamber, a floating piston, a high pressure chamber, a first flow through path, a second flow through path, and a turbine. The low pressure chamber includes an inlet and an outlet for cycling tubing fluid. The floating piston separates the low pressure chamber into an upper and lower section. The floating piston is cyclically responsive to a cycle of tubing fluid and another cycle of tubing fluid. The first flow through path couples a fluid from the lower section of the low pressure chamber to the high pressure chamber in response to a cyclical response of the floating piston. The second flow through path couples the fluid from the high pressure chamber to the lower section in response to another cyclical response of the floating piston.

A sucker-rod pumping unit for fluid withdrawal is disclosed which relates to the oil producing industry and may be used in other industrial and agricultural sectors. The objective of the invention is to provide an improvement of kinematics to extend the range of use of a drive for the deep-well sucker-rod pumping unit. The drive comprises an electric motor coupled through a central gearbox to differentials comprising pinions and wheels, each differential having an output shaft and a housing fixedly coupled to a crownwheel. The housing of each differential, which is fixedly coupled to the crownwheel, is coupled through a crank to a pitman arm. In the meantime, the pitman arms coupled to the cranks fixedly coupled to the crownwheels are coupled through yokes to an equalizer on a walking beam, or the pinions of the differentials engage the output shaft of the central gearbox.

The present invention relates to a plug and valve integrated cone valve pump with combined type movable and fixed three cylinders and two spiral centralizers, which is applied to suction working conditions in highly deviated well sections. It comprises three pump cylinders, which are combined type including two fixed cylinders and a dynamic cylinder, two centralizers, which are combined type including a dynamic spiral centralizer and fixed spiral centralizer, a fixed cone valve, a cylinder and plug integrated springing fixed cone valve, a fixed plunger and a movable guide rod cone valve to solve the problems such as stuck pump, eccentric wear between plunger and pump cylinder and valve leakage.

Horizontal wells and multi-completion vertical wells generally have a greater performance requirement on downhole gas separators to separate a gas portion from a liquid portion of the well fluid prior to entering an artificial lifting system (or pump). Implementations described and claimed herein provide a downhole gas separator comprising a dip tube extending from a tubing inlet to an open end, a tubing section extending around the dip tube, and a separator sleeve extending around the tubing section. A liquid component of the fluid stream makes a first u-turn at the open end of the separator sleeve, an s-turn at the openings in the tubing section, and second u-turn at the open end of the dip tube. A gaseous component of the fluid stream continues upwards at the open end of the separator sleeve.

A method of probabilistically estimating a velocity of a plunger of a beam pump may comprise continuously monitoring well acoustics using a plurality of passive acoustic sensors attached to external structures of the beam pump; digitizing outputs of the plurality of passive acoustic sensors and sending the digitized outputs to a computing device for storage and processing; and using the digitized outputs of the plurality of passive acoustic sensors, estimating a probability of the velocity of the plunger using a hidden Markov model (HMM) to represent a probability of a position and the probability of the velocity of the plunger, the HMM comprising a state space model and an observational model.

A corrosion testing device comprising a coupon holder for a sucker rod of a pump system and at least one coupon for corrosion testing, wherein the coupon holder comprises a holder body having an outer body surface and an inner contact surface, which inner contact surface is placeable on an outer rod surface of the sucker rod and defines a longitudinal body axis of the holder body, the at least one coupon is attached to the holder body and positioned at the outer body surface and at a radial coupon distance from the longitudinal body axis, the outer body surface comprises at least one guiding surface part located at a radial surface distance from the longitudinal body axis, and the radial surface distance is larger than the radial coupon distance.

A system for producing hydrocarbons is provided where the system has a plurality of sets of wells each formed of a plurality of wells; a plurality of multi-port valves mutually exclusively fluidly coupled to one or more of the plurality of wells of the plurality of sets of wells; a plurality of multiphase flow meters, where each multiphase flow meter is fluidly coupled to at least one multi-port valve; a multiphase pump fluidly coupled to the multi-port valves and the multiphase flow meters; and a processing facility containing a separator configured to separate a multiphase fluid into separate phases, where the processing facility is fluidly coupled to the multiphase pump. A data system and a data storage system may be coupled to the wells, the multi-port valves, the multiphase flow meters, the multiphase pump, and the processing facility to receive signals therefrom and to provide control thereof.

A prior art powered wrist pin knocker is improved with a new plunger that prevents wobbling. The new plunger responds to a return vacuum pressure. The improved plunger is symmetrical along a longitudinal axis. New embodiments include a new side mount valve head to reduce length, a remote air controller and a variable length cylinder for the cannon. The new valve head is a simplified valve head assembly that adapts to an end of the cannon mount or a side mount or a remote mount. Another embodiment provides a stand for a surface mount application. This embodiment can have an extended piston for loosening tail bearings down a long channel. A manual return embodiment can use a rod to manually return the plunger to the proximal end for another firing cycle.