Water cut monitoring method based on microwave three-probe oil well online water cut monitor

Abstract

The invention discloses a water content monitoring method based on a microwave three-probe oil well online water content monitor. The method comprises the steps of 1, monitoring the flow in a testingoil pipe; 2, judging whether a flow sensor collects data or not; 3, acquiring the water content value detected by a meso-position microwave probe; 4, judging whether the water content data detected bythe meso-position microwave probe are less than zero or not; 5, acquiring the water content value detected by a high-position microwave probe; and 6, judging whether water content data detected by the high-position microwave probe are less than zero or not. According to the water content monitoring method, a designed microwave three-probe structure is designed and used for monitoring the water content of liquid at different heights and layers, can monitor the flow state of crude oil in a and also ensure the measurement accuracy. The liquid is gathered in the testing oil pipe through flow gathering plates, so that the liquid reaches a certain height, and a low-position probe can detect data. When the flow sensor detects that the liquid passes through the oil pipe, it is shows than there isliquid in a well to flow out and go over the flow gathering plates.

Description

technical field [0001] The invention belongs to the technical field of oil well online water cut monitoring, and in particular relates to a water cut monitoring method based on a microwave three-probe oil well online water cut monitoring method. Background technique [0002] The water content of crude oil is an important parameter in the process of oil extraction, and its accurate measurement affects the extraction of crude oil. For production wells, online real-time monitoring of crude oil water content is of great significance for real-time understanding and mastering of single well production, oil production location, prediction of oil well development life, and automatic management of oil production. For old wells, in the later stage of production, with the reduction of reservoir pressure, the production efficiency is significantly reduced, and water injection production is mostly used in actual production. This makes it even more necessary to accurately measure the wat...

AI Technical Summary

Problems solved by technology

At present, in the oil exploration industry, the commonly used method of measuring the water content of crude oil is still manual sampling and testing from time to time. This measurement method has relatively high accuracy, but it takes a long time to sample and test, and the random error of sampling is large, which is time-consuming, labor-intensive and labor-intensive. It cannot guarantee the real-time performance of data, and cannot meet the requirements of real-time online monitoring of oilfield production

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