The invention relates to the technical field of pumping units, in particular to a method for improving oil pumping well indicator diagram oil gauging precision The method comprises the following steps of 101, ground indicator diagram pretreatment, 102, ground indicator diagram transformation, 103, working condition diagnosis, 104, liquid production capacity preliminary calculation, and 105, liquid production capacity final calculation The invention further comprises a system for improving the oil pumping well indicator diagram oil gauging precision, the system comprises an indicator diagram treatment module, a working condition diagnosis and classification module, a liquid production capacity calculation module and a liquid production capacity correction module which are connected in sequence By means of the method and the system, analysis diagnosis optimization is conducted on indicator diagram data of an oil pumping well which are collected and transmitted to a real-time database, the precision of liquid production capacity measurement of the oil pumping well can be improved greatly, production dynamic change of the oil well is commanded accurately, and production management level of the oil well is improved effectively

Method and system for improving oil pumping well indicator diagram oil gauging precision

The invention provides a method for calculating the liquid output of an oil pumping unit through the active power difference and relates to a flow measurement method. The area integral of the down stroke active power in an active power curve I to time is subtracted from the area integral of the down stroke active power in an active power curve II to time, and the area integral difference is obtained. The area integral difference corresponds to an actual filling degree difference of the oil pumping unit, and then the stroke frequency liquid output II corresponding to the active power curve II can be worked out according to the stroke frequency liquid output I, measured actually, of the active power curve I. Then the stroke frequency liquid outputs II corresponding to all the active power curves II are accumulated according to time, and the total daily liquid output, the total monthly liquid output and the total yearly liquid output can be worked out. According to the method, the difference method is adopted for calculation, frequent correction is not needed, and an operator just need to conduct correction after large change of the well condition happens. A correction method is simple, and the accuracy rate is high.

Method for calculating liquid output of oil pumping unit through active power difference

The invention discloses a wireless temperature measurement sensor having self-adaptability. The wireless temperature measurement sensor having self-adaptability is characterized by comprising a waterproof casing and an inner circuit, wherein the inner circuit comprises a temperature measurement probe, an AD conversion circuit, a micro processor, a timer, a memory, a switch circuit and a wireless transceiver module, an output end of the temperature measurement probe is connected with the AD conversion circuit, an output end of the AD conversion circuit is connected with the micro processor, an output end of the micro processor is connected with the switch circuit, an output end of the switch circuit is connected with the wireless transceiver module, the micro processor is further respectively connected with the timer and the memory, the waterproof casing is provided with a USB interface, and the USB interface is respectively connected with the memory and the micro processor. The wireless temperature measurement sensor having self-adaptability is provided with the waterproof casing, has advantages of long service life, good waterproof performance, simple structure and convenient mounting and makes the wireless transceiver module arranged in the sensor.

Wireless temperature measurement sensor having self-adaptability

The invention relates to a working condition diagnosis method of a rod pumped well based on an electrical work chart plate. Firstly, related electrical parameters of the rod pumped well are collected, and an actual electrical work chart of the rod pumped well is obtained according to the collected electrical parameters; then the actual electrical work chart is compared with an electrical work chart diagnosis plate which is obtained in advance, so that working conditions of the rod pumped well are diagnosed. The electrical work chart diagnosis plate is obtained by the steps of (1) establishing electrical work charts corresponding to typical working conditions for different typical working conditions; (2) correspondingly treating the electrical work charts in all typical working conditions, so that the electrical work chart diagnosis plate formed by the electrical work charts in all of the typical working conditions is obtained. By adopting the diagnosis method, the actual operating conditions of the rod pumped well can be accurately diagnosed, so that real-time monitoring of the rod pumped well is realized, and a technical support is provided for the efficient operation of the system.

Working condition diagnosis method of rod pumped well based on electrical work chart plate

The invention discloses an electric submersible pump well liquid production capacity calculating method and system; the method comprises the following steps: obtaining the total power inputted in the electric submersible pump wellhead; obtaining an electric submersible pump input power according to an input power consumption model and the total power; building a metering model according to the electric submersible pump input power and the electric submersible pump lift; using a heredity algorithm to optimize the metering model, and using the optimized metering model to measure the oil well liquid production capacity in real time. The method builds the electric submersible pump metering model to measure the oil well liquid volume, thus realizing real time detection of the electric submersible pump well liquid volume; the method and system are high in measuring precision, easy in operation and implementation, and can realize online monitoring and fault diagnosis for the electric submersible pump.

Electric submersible pump well liquid production capacity calculating method and system

The invention discloses a pumping unit indicator diagram liquid production capacity measurement technology The technology comprises an analysis and diagnosis module, an indicator diagram-to-pump diagram module, a liquid measure calculation module and a data management module, wherein the analysis and diagnosis module is used for calculating each level of rod indicator diagram and pump diagram of a ground indicator diagram by using a diagnostic model; the indicator diagram-to-pump diagram module is used for converting the ground indicator diagram into the pump diagram by using a wave equation; the liquid measure calculation module is used for performing liquid measure calculation based on the ground indicator diagram and production data obtained by the analysis and diagnosis module and each level of rod indicator diagram and pump diagram of the ground indicator diagram calculated by the analysis and diagnosis module; the data management module is used for controlling the liquid measure calculation module to perform liquid measure calculation based on the processing results of the analysis and diagnosis module and the indicator diagram-to-pump diagram module According to the pumping unit indicator diagram liquid production capacity measurement technology, the defects such as high cost, large operation difficulty and low measurement accuracy in the prior art can be overcome to realize the advantages of low cost, small operation difficulty and high measurement accuracy

Pumping unit indicator diagram liquid production capacity measurement technology

The utility model discloses a multi-interface-based micro-power-consumption wireless temperature transmitter, which comprises a shell, a low power consumption temperature sensor, a control circuit board, a wireless communication unit, a power supply, a blind pipe and a base, wherein the low power consumption temperature sensor, the control circuit board, the wireless communication unit and the power supply are installed inside the shell in a combined mode, and the blind pipe is installed in a mode of being matched with the low power consumption temperature sensor; and the low power consumption temperature sensor, the wireless communication unit and the power supply are connected with the control circuit board. The multi-interface-based micro-power-consumption wireless temperature transmitter can overcome defects of poor compatibility, low reliability, high maintenance cost and the like in the prior art so as to realize the advantages of good compatibility, high reliability and low maintenance cost.

Multi-interface-based micro-power-consumption wireless temperature transmitter

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Pumping unit indicator diagram liquid production capacity measurement technology

Multi-interface-based micro-power-consumption wireless temperature transmitter