Swing intermittent pumping control device and method for crank of pumping unit
A control method and technology for pumping units, which are applied in the directions of earth-moving drilling, fluid production, wellbore/well components, etc., can solve problems such as wellbore paraffin that affects fluid production and personnel safety, etc.
Pending Publication Date: 2021-06-18
PETROCHINA CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a pumping unit crank swing inter-pumping control device and method, which can solve the problems affecting fluid production, wellbore wax deposition and personnel safety, and achieve The purpose of energy saving and efficiency enhancement is to realize the purpose of automatic, safe and unattended intermittent pumping operation at the well site
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[0020] The present invention is described in further detail below in conjunction with accompanying drawing:
[0021] refer to figure 2 , the oil pumping unit crank swing pumping control device according to the present invention includes a motor speed sensor, an electric parameter acquisition module, a crank position sensor, a load and displacement sensor, a frequency converter and a control system, wherein the motor speed sensor, the electric parameter acquisition module , the crank position sensor and the load and displacement sensor are connected with the input end of the control system, and the output end of the control system is connected with the control end of the motor in the frequency converter pumping unit.
[0022] The motor speed sensor, electric parameter acquisition module, crank position sensor, load and displacement sensor are connected to the input end of the control system through the Zigbee module; the control system is an RTU controller.
[0023] Three-pha...
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The invention discloses a swing intermittent pumping control device and method for a crank of a pumping unit. The swing intermittent pumping control device comprises a motor rotating speed sensor, an electric parameter acquisition module, a crank position sensor, a load and displacement sensor, a frequency converter and a control system, wherein the motor rotating speed sensor, the electric parameter acquisition module, the crank position sensor and the load and displacement sensor are connected with the input end of the control system, and the output end of the control system is connected with the control end of a motor in the pumping unit through the frequency converter. The device and the method can solve the problems of affecting the liquid production capacity, shaft wax precipitation and personnel safety, achieve the purposes of energy conservation and efficiency improvement, and achieve the purpose of automatic, safe and unattended intermittent pumping operation of a well site.
Description
technical field [0001] The invention belongs to the field of digital equipment of a mechanical mining system, and relates to a control device and method for pumping between crank swings of an oil pumping unit. Background technique [0002] Changqing Oilfield is a typical "three-low" oilfield, with many low-production wells. By the end of 2014, the daily fluid production was less than 1.2m 3 There are 10,000 oil wells, accounting for 22.2% of the total number of wells opened. Due to the influence of low porosity and low permeability characteristics of the reservoir and the original pressure of the formation, low-yield and low-efficiency oil wells have poor reservoir physical properties and insufficient formation energy, which makes the seepage capacity of the oil layer small; low-yield and low-efficiency oil wells generally have small fluid volume and slow pressure recovery. If the flow time is long, the seepage velocity of the fluid is small, resulting in its liquid level r...
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Login to View More IPC IPC(8): E21B43/12
CPCE21B43/128
Inventor 辛宏周志平黄伟陆梅刘天宇刘涛韩二涛张岩杨海涛周杨帆
Owner PETROCHINA CO LTD