Well logging power graph method and device

Abstract

The present invention relates to oil well output liquid measuring power graph method and device. Oil well liquid output is measured through analysis of the 3D vibration of oil pumping rod column, oil pipe column and liquid column and the time relationship of their displacement, speed, strain, stress and load, research of the mutual coupling of the force and displacement of these three sys, acquiring oil well relating data with load and displacement sensors, and computer treatment to calculate the effective stroke of the oil pump. Meanwhile, the present invention also performs the diagnosis and analysis of oil well work state and the remote monitoring of oil well.

Description

technical field [0001] The invention relates to a method for metering the output fluid of an oil pumping well and an adopted device thereof. The produced liquid metering technology is not only suitable for automatic metering construction in newly developed oilfields, but also suitable for the reconstruction of surface metering systems in old oilfields. Background technique [0002] At present, domestic oilfield oil well production fluid measurement mainly adopts technical means such as double-volume single-well measurement, wellhead tipping bucket measurement, movable metering vehicle measurement, and liquid level method. [0003] 1. Double-volume single-well metering: This is the most common metering method, that is, the output fluid of each oil well is transported to the metering station through the oil outlet pipeline according to the well group, enters the oil-gas separator, and is separated from the gas-liquid , to measure the produced fluid, and then enter the oil gat...

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Problems solved by technology

However, when this method is used, accessories such as metering tanks and pipe valves need to be installed at the wellhead, and oil well pipelines need to be reconnected, which increases the workload of single well equipment and installation.

Moreover, the measurement of the device is affected by the pulsating airflow produced by the irregular gas outlet of the oil well, which will cause the flowmeter to overturn by mistake, seriously affecting the test accuracy

[0005] 3. Movable metering vehicle: Since the device needs to be reconnected to the oil well pipeline during metering, the accuracy is poor, especially when used in winter, it is easy to cause pipeline blockage

Since the existing oil, gas, and water ratio sensors have not been successfully developed, the collection of key parameters cannot be guaranteed, and it is difficult to complete this technical solution, and it is even more difficult to actually enter the field for implementation

[0008] In short, the above oil well production fluid measurement methods face: ①Limited by the performance and technical limitations of the metering device; ②Measurement data recording time is short, low-production oil wells have intermittent liquid production, and short-term measurement is difficult to obtain the real liquid production ; ③ It is necessary to be equipped with corresponding surface pipelines and devices, and there are many problems such as relatively high investment costs, which are difficult to meet the low-cost operation of oil well metering and development in low-permeability oilfields

It is difficult to meet the oilfield metering requirements by conventional metering methods

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