油藏巖芯多相飽和度微波測(cè)定儀
A MICROWAVE INSTRUMENT FOR MEASURING MULTIPHASE SATURATIONS IN RESERVOIR CORES
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摘要: 油藏巖芯的含油、含氣、含水飽和度數(shù)據(jù)是開(kāi)發(fā)油田進(jìn)行分析與計(jì)算的重要資料。由于巖芯中的水對(duì)微波能量傳輸產(chǎn)生極大的衰減效應(yīng),而巖芯中的其他成分(砂巖、油、氣體等)對(duì)微波信號(hào)衰減較小。根據(jù)這一原理,本文論述了微波衰減法測(cè)定巖芯多相飽和度儀器的工作原理。該儀器利用微波衰減測(cè)試系統(tǒng)首先確定巖芯中油、氣、水混合狀態(tài)下的水的含量,然后利用巖芯的其他參數(shù)完成含油、含氣、含水多相飽和度的測(cè)定與顯示。該儀器體積小,結(jié)構(gòu)簡(jiǎn)單,適用于圓柱狀砂巖巖芯多相飽和度的快速測(cè)定。測(cè)量誤差小于3.0％。
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關(guān)鍵詞:
- 微波測(cè)量; 油藏巖芯; 飽和度
Abstract: The three-phase saturations of oil, gas and water system in cores are importam data for analyses and calculations of oil-field. According to the principle that microwave energy through a core is strongly absorbed by water content, while oil, gas and sandstone are relatively transparent, the microwave instrument for determining multi-phase saturations in cores with oil, gas and water is introduced. The attenuated signals proportional to water content are promptly processed, calculated and displayed by a signal processing unit. Results of measurements are displayed in digits in terms of percentage. The instrument is featured by its small size, simple structure and low cost. It has been used for measuring mufti-phase saturations of cylindrical cores with oil, gas and water. The measuring error is within土3.0%. -
J. R. Birchak, et al., Proc. IEEE, 62 (1974)1, 93-98.[2]S. K. Aggarwal, et al., Measurement of Water in Sandstone Cores, 1983 Int. Geoaeience and Rem ote Sensing Symp. U. S. A. pp. 1.1-1.5.[3][3][4]周顯民,大慶石油地質(zhì)與開(kāi)發(fā),1988年,第2期,第29-36頁(yè).[5]洪世鐸,油藏物理基礎(chǔ),石油工業(yè)出版社,1985年.[6]吳群等,微波衰減法測(cè)定巖芯含水飽和度的研究,第四屆全國(guó)微波應(yīng)用學(xué)術(shù)會(huì)議論文集,四川成都,1989年5月,第46-50頁(yè). -
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