Single-phase flow measurement method and device, electronic equipment, storage medium and instrument

Abstract

The invention relates to a single-phase flow measuring method and device, electronic equipment, a storage medium and an instrument, and relates to the technical field of well logging, the single-phase flow measuring method comprises the steps that a first cavity and a second cavity communicating with the first cavity are initialized, and the first cavity and the second cavity are made to be in a water phase state; the first cavity and the second cavity in the water phase state are controlled to rotate according to a plurality of preset positions, and in the rotating process, the liquid inlet of the first cavity and the liquid outlet of the second cavity are controlled by controlling the position relation between the liquid inlet of the first cavity and the liquid outlet of the second cavity; the content of an oil phase and the content of a water phase in the first cavity and the content of an oil phase in the second cavity are regulated and controlled through a flow guide mechanism installed between the liquid inlet and the liquid outlet; and in the regulation and control process, the oil phase change rule and the water phase change rule are determined through an array conductivity sensor arranged on the flow guide mechanism. According to the embodiment of the invention, single-phase flow measurement of oil and water can be realized.

Description

technical field [0001] The present disclosure relates to the field of oilfield technology, and in particular, to a method and device for measuring single-phase flow, electronic equipment, storage medium and instrument. Background technique [0002] With the rapid development and progress of science and technology, the demand for petroleum from all walks of life in society continues to rise, and my country's annual import volume of petroleum resources and domestic extraction volume have repeatedly hit new highs. Low-permeability oilfields in my country are widely distributed, with complex structures, low permeability, and difficulty in development, so that single-well production is generally low. Horizontal logging technology is a very important technology in oil and gas exploration and development. It is suitable for the exploitation of low permeability, low pressure, heavy oil wells and other types of oil reservoirs with complex ground conditions and difficult to produce ef...

AI Technical Summary

Problems solved by technology

However, due to the generally low single-well productivity of horizontal wells in low-permeability reservoirs, taking Daqing Oilfield as an example, the productivity of a single horizontal well is around 20%.

Therefore, in the case of low fluid production, there is no corresponding flow test technology to meet the flow range and flow lower limit, which seriously affects the accurate measurement of the production profile

[0004] 2. Limitations of existing technologies in horizontal well testing

Our current horizontal well testing technology mainly uses the combination of flowmeter and water cut meter for dynamic measurement, but now there are two main problems, one is: the measurement lower limit of the current flow sensor cannot meet the requirements of multi-segment and multi-cluster fine measurement; The widely used instruments for measuring the flow rate of the production profile of horizontal wells mainly include: turbine flowmeter, ultrasonic flowmeter, tracer flowmeter, electromagnetic flowmeter, thermal pulse flowmeter, etc.

However, the traditional turbine flowmeter is easily affected by sand sticking, and its flow measurement lower limit is 1; the ultrasonic flowmeter is easily affected by the complex fluid structure distribution and ambient temperature, and its flow measurement lower limit is 5; the tracer method is simple in principle, but The tracer will pollute the fluid and endanger the safety of personnel; the electromagnetic flow measurement method is widely used in the field of flow measurement with high water content or water as the continuous phase, but it is limited to the pipe flow where the fluid velocity is axisymmetrically distributed

Second, the error of the current logging method is relatively large. Under the condition of low liquid production, the lower limit of the flow rate cannot be reached, and the measurement error of the water cut under this condition is also relatively large, which leads to further amplification of the interpreted oil phase flow rate error.

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