A computer implemented method of predicting a future maintenance event of a pumping equipment on a wellbore pumping unit comprising loading a pump usage log and a pump maintenance log into a predictive maintenance model. The predictive maintenance model is trained by a machine learning process with a historical database of completed pumping jobs. The predictive maintenance model determines a probability of a future maintenance event in response to the current pump usage. The unit controller displays an alert of the remaining pump life in comparison to a threshold value for a recommended pump maintenance period or a required pump maintenance period.

An inflatable object with a sag to enclose pressurized air to a predetermined threshold pressure and to obtain a shape, a decorative dress to cover at least a portion of the sag and having characteristics of an object having the shape when covering the sag outer surface, couplings on the sag outer surface to which the decorative dress is attached, a frame to support at least a portion of the sag, an air pump coupled to the sag by a unidirectional inlet valve, and to provide the insufflated air to the sag, an optional sensor coupled to the sag and configured to detect sag air pressure; and a controller, coupled between the sensor and the pump. The controller operates the pump to automatically maintain a threshold pressure of air within the sag. The sensor and the controller are disposed on the sag surface.

Methods and apparatus for automated control of a pump utilized to draw liquid from a fluid reservoir. Certain aspects relate to one or more components of an oil well pump control system. Other aspects relate to methods for automated control of a pump utilized to draw oil from an oil well.

A fluid circulation monitoring system includes a distributed processing system having a first processor located on-premises near a space filled with a circulating fluid and a second processor located off-premises. The first processor and the second processor are in communication with one another. A sensor is operatively connected to the first processor and senses at least one parameter associated with a flow rate of fluid through the circulation system. The distributed processing system is configured to process the at least one parameter and derive a volumetric fluid flow rate through a fluid pump which propels the fluid through the circulation system. Pattern recognition is applied to the at least one parameter to detect maintenance events and predict the need for maintenance events.

An energy-saving control method of a resonant piezoelectric air pump includes steps of: (a) providing the resonant piezoelectric air pump and a control module, wherein the resonant piezoelectric air pump and the control module are electrically connected to each other; (b) at the beginning of a unit of time, operating the control module to transmit an enable signal to the resonant piezoelectric air pump so that the resonant piezoelectric air pump is driven to transfer an amount of air in a process for air transfer; (c) during the unit of time, adjusting a duty ratio of the enable signal by using the control module for enabling or disabling the resonant piezoelectric air pump; and (d) after spending the unit of time, repeating the step (b) and the step (c) in another unit of time or more units of time thereafter until the process for air transfer is completed.

Systems and methods for controlling operation of a well, of which the method includes receiving an operation setting for operation of a system that provides lift gas into and produces gas from the well, monitoring operation of the system using a first controller, determining, using the first controller, that the system is not operating at the operation setting, and in response to determining that the system is not operating at the operation setting, sending, using a two-way communication link from the first controller to a second controller, a control signal to the second controller. The control signal is configured to cause the second controller to modify an operation of a compressor of the system.

A user interface for a thrombectomy fluid management system may include a first mode indicator configured to indicate when a first mode of fluid inflow is active, a second mode indicator configured to indicate when a second mode of fluid inflow is active, and a run time display including an alphanumeric run time value shown in a first color. The alphanumeric run time value is a sum of a first run time value of the first mode and a second run time value of the second mode. The system may include an inflow pump configured to provide fluid inflow through a thrombectomy device, a controller in communication with the inflow pump and the thrombectomy device, a user activation switch configured to activate the inflow pump, and a display including the user interface. The display may include a touchscreen user interface.

The purpose of the present invention is to provide an air compressing apparatus capable of establishing a sufficient air-filling rate while reducing noise at the initiation of operations. To solve this problem, in the present invention, the air compressing apparatus comprises a compressor body that compresses air, a motor that drives the compressor body, an inverter that controls the rotation speed of the motor, a control circuit connected to the inverter, and a pressure sensor that detects the pressure of air compressed in the compressor body, wherein the control circuit controls operation of the compressor body by operating at a low speed activation mode that operates the compressor body at a low speed rotational frequency lower than a maximum rotational speed when the air compressing apparatus is activated, and on the basis of a pressure value detected by the pressure sensor and elapsed time from activation, switching from the low speed activation mode to a normal operating mode that operates at variable frequencies including a maximum rotational frequency.

An oscillation controller operates on engine speed or RPM data from a pump or pumping unit associated with a wellbore operation. The oscillation controller determines a measure of variability, such as a bandwidth, for the engine speed over a rolling time window and compares the measure of variability to an oscillation bandwidth threshold. The oscillation controller determines that erratic behavior or oscillation is present when the measure of variability exceeds the oscillation bandwidth threshold, and for such instances measures a duration of erratic behavior with a variability timer. If the oscillation controller determines that the erratic behavior has subsided, the variability timer is cleared. The oscillation controller generates at least one warning whenever the variability timer exceeds an oscillation warning threshold. The oscillation controller mitigates erratic behavior by downshifting (or shifting to neutral) at least one gear of the pump or pumping unit if the variability timer exceeds an oscillation mitigation time threshold.

The present disclosure provides a device for monitoring oil pressure in an oil cylinder of a diaphragm compressor, including a piston rod and a strain gauge circuit. The strain gauge circuit includes a strain gauge component and a bridge circuit connected, and the strain gauge component is arranged on the surface of the piston rod. A strain gauge component is noninvasively arranged on the piston rod of the diaphragm compressor to measure the load of the piston rod, such that the oil pressure can be measured indirectly, and thus the oil pressure of the diaphragm compressor can be measured nondestructively. Nondestructive and noninvasive monitoring of the diaphragm compressor is safe and reliable, and can achieve accurate monitoring of the oil pressure especially in high-pressure working conditions.