新疆石油地质

›› 2017, Vol. 38 ›› Issue (3): 1-1.doi: 10.7657/XJPG20170321

• 论文 •    

电阻率反演技术在盐水水淹层评价中的应用

谢莹峰1，申辉林1，何胜林2，王利娟2，丁磊2，史安平1   

  1. (1.中国石油大学 地球科学与技术学院,山东 青岛 266580;2.中海石油(中国)有限公司 湛江分公司，广东 湛江 524057）
  • 出版日期:2019-01-01 发布日期:1905-07-15

Application of Resistivity Inversion Technique in Evaluation of Saline Water Flooded Zones

XIE Yingfeng1, SHEN Huilin1, HE Shenglin2, WANG Lijuan2, DING Lei2, SHI Anping1   

  1. (1.School of Geosciences, China University of Petroleum, Qingdao, Shandong 266580, China; 2.Zhanjiang Branch, CNOOC China Limited, Zhanjiang, Guangdong 524057, China)
  • Online:2019-01-01 Published:1905-07-15

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摘要： 油层发生盐水水淹后，水淹层电阻率明显下降，如何准确判断水淹级别成为评价水淹层的关键。利用变倍数物质平衡理论模型反演可得到饱含油和饱含水状态下地层电阻率，研究区水淹层的电阻率测井值介于饱含油地层电阻率和饱含水地层电阻率之间，且水淹程度越低，地层电阻率越接近饱含油地层电阻率；反之，则越接近饱含水地层电阻率。利用相对于饱含油地层电阻率和相对于饱含水地层电阻率的变化率建立了水淹层精细解释图版和水淹级别定量划分标准，实际应用表明，涠洲油田盐水水淹层的解释精度达到88.8%，电阻率反演技术为盐水水淹层测井评价奠定了基础。

Abstract: The resistivity of the water flooded zone decreases significantly after saline water flooding occurs in the oil zone. How to accurately identify the water flooded level is critical to evaluate the water flooded zones. The resistivities of oil-saturated and water-saturated zones can be obtained from the inversion of variable multiple material balance model. In the study area, the resistivity value of the water flooded zone falls between those of oil-saturated and water-saturated zones, and the lower the water flooded level is, the closer the formation resistivity goes to that of the oil-saturated zone; on the contrary, the higher the water flooded level is, the closer it goes to that of the water-saturated zone. The change rates relative to the resistivities of oil-saturated and water-saturated zones are used to establish a detailed interpretation chart for water flooded zone and quantitative classification standards for water flooded level. The actual application shows that the interpretation accuracy of saline water flooded zones has reached 88.8% and the resistivity inversion technology lays a foundation for logging evaluation of saline water flooded zones in Weizhou oilfield.

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