摘要
为了进一步验证波阻抗随方位角变化(IPVA)方法检测裂缝的能力,展示笔者在裂缝检测研究方面的新进展,本文对胜利油田罗42井区的裂缝分布进行了检测。据该区钻井资料揭示,该区沙三段泥岩裂缝集中段位于沙三段第四套油页岩中,裂缝类型较多,但以构造裂缝所占比例最大。同时采用IPVA方法和构造正反演裂缝预测技术对该井区裂缝分布进行了预测,两者预测结果基本一致,并与实际钻井资料分析结果相吻合。根据以上结果,不仅进一步说明了这两种方法有较强的裂缝检测能力,而且圈定了4个有利目标区,为该区裂缝油藏的勘探提供了有利依据。
In order to examine the capacity using variation of impedance versus azimuth (IPVA) to detect the fracture and showing the author's development in an aspect of fracture detection,the paper detected the distribution of fracture in Luo 42 well zone of Shengli Oilfield.It is shown by drilling data in the region that the fracture concentrated segment of S3 shale situated in the fourth oil shale of S3 shale.There are many fractural types and the proportion of structural fracture is maximum.Using simultaneously the IPVA method and structural fracture predicted forward and inversion techniques to predict the distribution of fractures in the well zone,the predicted results of both methods are basically coincident and matched the analytic results of drilling data.It is further demonstrated by above results that the both methods have strong ability of fractural detection and four favorable targets are trapped,providing a benefit basis for exploration of fractured reservoir in the region.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2004年第4期428-434,共7页
Oil Geophysical Prospecting
关键词
钻井资料
泥岩
裂缝检测
正反演
裂缝分布
裂缝预测
沙三段
段位
能力
实际
fractural detection,P-wave in full-azimuth,method of variation of impedance versus azimuth,structural forward and inversion,stress strain
