新疆石油地质 ›› 2021, Vol. 42 ›› Issue (5): 529-540.doi: 10.7657/XJPG20210503
李源1(), 陈胜1, 王鹏1, 刘微2, 范昆1, 孙甫1
收稿日期:
2021-03-25
修回日期:
2021-07-23
出版日期:
2021-10-01
发布日期:
2021-09-28
作者简介:
李源(1987-),男,四川广安人,工程师,硕士,地震解释,(Tel)13880770886(E-mail) 基金资助:
LI Yuan1(), CHEN Sheng1, WANG Peng1, LIU Wei2, FAN Kun1, SUN Fu1
Received:
2021-03-25
Revised:
2021-07-23
Online:
2021-10-01
Published:
2021-09-28
摘要:
川南地区Y101区油气资源丰富,主要产气层下二叠统茅口组岩溶缝洞发育。储集层厚度小,横向非均质性强,与上覆上二叠统龙潭组岩性速度差异大,形成“两谷夹一峰”的强反射界面,对茅口组岩溶储集体产生屏蔽效应,导致岩溶储集体地震响应识别困难。为此,建立一套基于模型正演的频率域子波重构和波形分解技术进行岩溶储集体地震响应识别,首先,根据研究区钻井资料、测井资料和地层结构建立茅口组岩溶储集体模型,采用基于有限差分法的声波波动方程进行正演模拟;然后运用多子波分解的频率域子波重构和波形分解技术去除强反射界面,实现岩溶储集体地震识别。川南地区Y101区的应用效果验证了该方法的有效性;基于模型正演的频率域子波重构和波形分解技术能够消除强反射界面的屏蔽影响,储集层地震响应与钻井吻合度较高。
中图分类号:
李源, 陈胜, 王鹏, 刘微, 范昆, 孙甫. 川南地区下二叠统茅口组岩溶储集体地震识别[J]. 新疆石油地质, 2021, 42(5): 529-540.
LI Yuan, CHEN Sheng, WANG Peng, LIU Wei, FAN Kun, SUN Fu. Seismic Response Identification of Karst Reservoir in Lower Permian Maokou Formation in Southern Sichuan Basin[J]. Xinjiang Petroleum Geology, 2021, 42(5): 529-540.
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