Abstract
The measuring instruments have some errors in the measurement of high water cut production wells, and many domestic oil fields are also in high water cut state. The measured data from the conventional production logging instrument are all almost inaccurate. This project has designed a staggered probe array flow meter well logging apparatus based on the characteristic of electromagnetic wave specific retention meter that can fully cover the wellbore fluid and improve flow measurement accuracy. According to the application in horizontal wells, the accuracy of this measuring instrument now has been proved to be more than 90% and can meet the requirements of production logging interpretation in horizontal wells.
Highlights
Directional well drilling technology is becoming more and more perfect
Because of the gravity factors, the differentiation of fluid in the horizontal wellbore occurs that the light phase is in the upper part and the lower part is in the lower part. e traditional production logging instrument cannot truly reflect the fluid shape in horizontal wells
It must analyze the flow pattern of multiphase flow in horizontal wells. It researches the importance of the multiphase flow mechanism in horizontal wells to interpretation of production profile data
Summary
Directional well drilling technology is becoming more and more perfect. Related completion technology is constantly improved [1]. e number of horizontal wells is increasing. Horizontal wells have gradually become one of the key technologies for high and stable production of various oil and gas fields. In production logging, conventional measuring instruments cannot carry out the measurement work for high water cut and low yield horizontal wells. If the domestic production wells are in high water cut, the instrument can measure the water holding rate range between 0∼100%, and the precision should be above 98%. There may be a problem that is not easy to operate if the 12 holding water rate measuring instrument is in the same cross section of the array type measuring instrument [14] because of the limited working space in the production well [15].
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