Abstract: A long-stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a crown mounted atop the tower; a sprocket supported by the crown and rotatable relative thereto; and a belt. The unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket; and a sensor for detecting position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: A long-stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a crown mounted atop the tower; a sprocket supported by the crown and rotatable relative thereto; and a belt. The unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket; and a sensor for detecting position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: A long-stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a crown mounted atop the tower; a sprocket supported by the crown and rotatable relative thereto; and a belt. The unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket; and a sensor for detecting position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: A spectroscope includes a light source, at least one static optical element for manipulating or structuring light, at least two adaptive optical elements and at least one detector. The at least two adaptive optical elements are configured to partition an optical function of spectral sorting from at least one of the following optical function: routing, attenuation, and/or encoding. The light source, the at least one static optical element, and the at least two adaptive optical elements are configured to direct light from the light source into first and second distinct light channels, the first light channel containing a sample to be analyzed.

Abstract: A long-stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a crown mounted atop the tower; a sprocket supported by the crown and rotatable relative thereto; and a belt. The unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket; and a sensor for detecting position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: A spectroscope includes a light source, at least one static optical element for manipulating or structuring light, at least two adaptive optical elements and at least one detector. The at least two adaptive optical elements are configured to partition an optical function of spectral sorting from at least one of the following optical function: routing, attenuation, and/or encoding. The light source, the at least one static optical element, and the at least two adaptive optical elements are configured to direct light from the light source into first and second distinct light channels, the first light channel containing a sample to be analyzed.

Abstract: A long stroke pumping unit includes a tower and a counterweight assembly movable along the tower. A belt includes a first end connected to the counterweight assembly and a second end connectable to a rod string. A prime mover is used to reciprocate the counterweight assembly along the tower. A sensor detects the position of the counterweight assembly, and a load cell measures the force exerted on the rod string. A motor is provided to adjust an effective weight of the counterweight assembly during reciprocation thereof along the tower. A controller communicates data with the sensor and the load cell and controls the adjustment force exerted by the adjustment motor.

Abstract: This disclosure relates to a direct drive pumping unit having a reciprocator for reciprocating a sucker rod string and a sensor for detecting position of a polished rod. The reciprocator includes a tower for surrounding a wellhead. The polished rod is connectable to the sucker rod string and has an inner thread open to a top thereof and extends along at least most of a length thereof. A screw shaft extends into the polished rod and interacts with the inner thread. A motor is mounted to the tower, torsionally connected to the screw shaft, and operable to rotate the screw shaft relative to the polished rod.

Abstract: A long-stroke pumping unit includes a tower, a counterweight assembly movable along the tower, and a crown mounted atop the tower. A sprocket is supported by the crown and rotatable relative thereto. The counterweight is coupled to a belt. The pumping unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket. A sensor is used to detect a position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: A spectroscope includes a light source, at least one static optical element for manipulating or structuring light, at least two adaptive optical elements and at least one detector. The at least two adaptive optical elements are configured to partition an optical function of spectral sorting from at least one of the following optical function: routing, attenuation, and/or encoding. The light source, the at least one static optical element, and the at least two adaptive optical elements are configured to direct light from the light source into first and second distinct light channels, the first light channel containing a sample to be analyzed.

Abstract: A long stroke pumping unit includes a tower, a counterweight assembly movable along the tower, a crown mounted atop the tower, and a drum supported by the crown and rotatable relative thereto. A belt has a first end connected to the counterweight assembly and a second end connectable to a rod string, and the belt extends over the drum. A linear electromagnetic motor is used to reciprocate the counterweight assembly along the tower. The linear electromagnetic motor includes a traveler mounted to an exterior of the counterweight assembly and a stator extending from a base of the tower to the crown and along a guide rail of the tower. The pumping unit further includes a sensor for detecting position of the counterweight assembly.

Abstract: A long stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a crown mounted atop the tower; a belt having a first end connected to the counterweight assembly and having a second end connectable to a rod string; a prime mover for reciprocating the counterweight assembly along the tower; a sensor for detecting position of the counterweight assembly; a load cell for measuring force exerted on the rod string; a motor operable to adjust an effective weight of the counterweight assembly during reciprocation thereof along the tower; and a controller in data communication with the sensor and the load cell and operable to control the adjustment force exerted by the adjustment motor.

Abstract: A direct drive pumping unit having a reciprocator for reciprocating a sucker rod string and a sensor for detecting position of a polished rod. The reciprocator having a tower for surrounding a wellhead; the polished rod connectable to the sucker rod string and having an inner thread open to a top thereof and extending along at least most of a length thereof; a screw shaft for extending into the polished rod and interacting with the inner thread; and a motor mounted to the tower, torsionally connected to the screw shaft, and operable to rotate the screw shaft relative to the polished rod.

Abstract: A long-stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a crown mounted atop the tower; a sprocket supported by the crown and rotatable relative thereto; and a belt. The unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket; and a sensor for detecting position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: A long-stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a drum connected to an upper end of the tower and rotatable relative thereto. The unit also includes a belt having a first end connected to the counterweight assembly, extending over the drum, and having a second end connectable to a rod string. The unit further includes a prime mover for reciprocating the counterweight assembly along the tower; a sensor for detecting sudden acceleration of the counterweight assembly due to failure of the rod string; and a controller in communication with the sensor and operable to activate the braking or arrestor system in response to detection of the sudden acceleration. The unit further includes at least one of a braking system for halting free-fall of the counterweight assembly; and an arrestor system for absorbing kinetic energy of the falling counterweight assembly.

Abstract: A long-stroke pumping unit for driving rod includes a tower and a counterweight assembly movable along the tower. A crown is mounted atop the tower, and a sprocket is supported by the crown and rotatable relative to the crown. A belt connects the counterweight assembly to the rod. The unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket. A sensor is used to detect a position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: A fluid monitoring apparatus includes a housing and a tracer sensor attached to an exterior of the housing. The housing has at least one flow passage for a fluid sample and a port for the tracer sensor to monitor the fluid sample in the housing. In one example, the monitoring apparatus may include a plurality of tracer sensors attached to the housing, wherein the tracer sensors are interchangeably attached to the housing. In one embodiment, the monitoring apparatus may be attached to a first well for detecting the presence of a tracer in the first well, wherein the tracer is supplied from a second well.

Abstract: A centrifuge (1) includes: a motor (4) having a rotor (3); an imaging system (2) torsionally connected to the rotor; a sample holder torsionally connected to the imaging system; and a light source (7) for illuminating the sample holder. The imaging system includes: a image sensor in optical communication with the sample holder; and a data link for transmitting image data. A centrifuge test includes: spinning a reservoir core sample in a sample holder of a rotor, wherein an imaging system is torsionally connected to the rotor; and collecting image data of the sample holder with the imaging system while spinning.

Abstract: A centrifuge (1) includes: a motor (4) having a rotor (3); an imaging system (2) torsionally connected to the rotor; a sample holder torsionally connected to the imaging system; and a light source for illuminating the sample holder. The imaging system (2) includes: a image sensor in optical communication with the sample holder; and a data link for transmitting image data. A centrifuge test includes: spinning a reservoir core sample in a sample holder of a rotor, wherein an imaging system is torsionally connected to the rotor; and collecting image data of the sample holder with the imaging system while spinning.

Abstract: A long-stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a crown mounted atop the tower; a sprocket supported by the crown and rotatable relative thereto; and a belt. The unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket; and a sensor for detecting position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.