录井资料在王集油田西南缘压裂选层中的应用

泌阳凹陷王集油田西南缘储集层物性总体较差，部分储集层必须经过压裂改造才能获得工业油流。由于该区岩电关系、油水关系复杂，部分储集层改造后并未获得工业油流，因而准确选择压裂改造层是避免无效压裂、提高储集层压裂改造成功率的关键。通过对该区录井、试油资料的统计分析，提出了选择压裂改造层的岩性、含油级别和气测、岩石热解地化条件；同时，通过对大量交会图板的统计分析，分别提出了适用于该区H3I—H3Ⅳ油层组和H3V—H3Ⅶ油层组选择压裂改造层的地化-气测一体化解释评价图板。实例分析表明，综合应用上述方法可确保准确、可靠选择压裂改造层，为实现王集油田西南缘石油的有效开发提供技术支撑。

The application of mud logging data in fracturing and layer selection in the southwest edge of Wangji Oilfield

As a whole,the reservoir petrophysics is poor in southwest edge of Wangji Oilfield,part of the reservoir must be performed with hydrolic fracturing to obtain the industrial oil flow.As the relations of litho-electric and oil-water in the area are complex,part of the reservoir has not got the industrial oil after the hydrolic fracturing,and thus accurately selecting hydrolic fracturing layer is the key to avoid invalid fracturing and increase the success rate of reservoir fracturing.Through the statistics and analysis of mud logging and oil testing data of the area,the authors put forward the conditions of the lithology,oil-bearing level and the conditions of gas logging and rock pyrolysis for selecting the fracturing layer,at same time,offered the interpretation and evaluation integration charts of geochemistry-gas logging respectively by the statistic and analysis of a large number of the intersection charts,which are suitable for the selection of hydrolic fracturing layers of H3Ⅰ-H3Ⅳ and H3Ⅴ-H3Ⅶ reservoir group.The practical cases’ study showed that the comprehensive application of the above methods can ensure an accurate,reliable selecting the fracturing layers and provide a technical support for southwest edge of Wangji Oilfield to achieve an effective development.