Working state detection and control intelligent pumping unit
A technology for detecting control and working status, applied in control systems, AC motor control, wellbore/well components, etc., can solve problems such as automatic judgment of changes, and achieve the effect of improving accuracy and reducing burden
Active Publication Date: 2022-02-22
上海复泉工程技术有限公司
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Problems solved by technology
The existing control device of the pumping unit cannot automatically judge the failure according to the actual situation of the oil well, but still continues to run, resulting in greater failure and huge economic losses
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Embodiment Construction
[0019] The specific implementation manners of the present invention will be described below in conjunction with the drawings and implementation.
[0020] As an embodiment, the present invention provides a working state detection and control intelligent pumping unit, which is characterized in that it includes: an oil pumping action device and an oil pumping control device, wherein the oil pumping action device has an oil pumping transmission mechanism and The driving motor and the oil pumping transmission mechanism are connected with the oil pump for controlling the piston movement of the oil pump to realize oil pumping. The driving motor is connected with the oil pumping transmission mechanism for driving the oil pumping transmission mechanism to perform circular reciprocating motion; the oil pumping control device It has a frequency converter and a controller. The frequency converter is electrically connected to the drive motor. It has a measurement unit, a frequency conversio...
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The invention provides an intelligent oil pumping unit for detection and control of working state, which is installed at an oil well to realize oil pumping by performing reciprocating operations on the oil pump, and is characterized in that it includes: an oil pumping action device and an oil pumping control device. The pumping action device has a pumping transmission mechanism and a driving motor; the pumping control device has a frequency converter and a controller. According to the current value, voltage value, power factor and frequency of the current flowing through the drive motor measured by the frequency converter, the fixed electrical parameters of the drive motor and the transmission parameters of the pumping transmission mechanism, the controller calculates and obtains the current state indicator diagram, and Compare the current state dynamometer diagram with the reference dynamometer diagram to determine whether there is an offset. When it is judged that an offset occurs, the frequency converter is controlled according to the offset to adjust the frequency flowing through the drive motor, thereby changing the oil pumping efficiency of the pumping unit.
Description
technical field [0001] The invention belongs to the technical field of oil pumping units, and in particular relates to an intelligent oil pumping unit for detection and control of working states. Background technique [0002] As the main equipment for oil recovery in oil fields, pumping units have been widely used in oil fields. The utility model has the characteristics of simple structure, easy manufacture and convenient use. Oil field managers choose different types of pumping units for oil production according to the specific conditions of the oil field. [0003] At present, the control devices of pumping units in mainstream use include the following types: pumping units operating at full voltage, which have low investment cost, simple operation, and high daily output, but the equipment maintenance cost is extremely high and the maintenance time is also long , which seriously affects the production efficiency during the maintenance period; the sensorless frequency conve...
Claims
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IPC IPC(8): E21B43/00E21B47/009H02P27/04
CPCE21B43/127H02P27/04
Inventor 杨丽荣
Owner 上海复泉工程技术有限公司