新场须二段致密砂岩储层有效裂缝支持向量机的识别

• 作 者: 王浩 周文 陈洪德 谢润成 邓虎成
• 机 构: 油气藏地质及开发工程国家重点实验室·成都理工大学,
• 出 处: 辽宁化工
• 发表日期: 2013年10期
• 关键词: 二段 支持向量机 致密砂岩储层 裂缝识别 须二段 须家河组 裂缝性储层 取心井段 新场地区 致密砂岩

新场地区须家河组二段储层以低孔渗、超深超压、致密砂岩地质特征为主。该地区目地层段裂缝是主要的储集和流通空间。裂缝识别是裂缝性储层勘探和开发研究中的关键问题和难点之一。基于岩芯样品裂缝类型的统计和分类,运用支持向量机(SVM)对储层裂缝的有效性进行评价。结合取心井段岩芯裂缝的检验,证实该方法对裂缝评价效果与地层的实际情况相符,能较好的反映裂缝的发育情况。对该地区裂缝型储层的开发具有一定的借鉴作用。

The reservoir of the second member of Xujiahe Formation in Xinchang area is characterized by low porosity, ultra-deep overpressure and tight sandstone. The fractures in the target layer of this area are the main reservoir and circulation space. Crack identification is one of the key problems and difficulties in the exploration and development of fractured reservoirs. Based on the statistics and classification of fracture types in core samples, the effectiveness of reservoir fractures was evaluated by support vector machine (SVM). According to the test of the core cracks in the coring section, it is confirmed that this method is in line with the actual situation of the fractures and can well reflect the development of the cracks. It has some reference to the development of fractured reservoirs in this area.