“水平井”模式在致密油藏勘探开发中的优势——以旬邑探区延长组长8段为例  

Advantages of“Horizontal Well”Mode in Exploration and Development of Dense Reservoir--Taking Chang-8 Section of Yanchang Formation in Xunyi District as An Example

作　　者：王宝萍[1] 龚建涛 白艳军[1] 任剑[1] Wang Baoping;Gong Jiantao;Bai Yanjun;Ren Jian(Yanchang Oilfield Co., Ltd., Yan'an, Shaanxi 716000, China)

机构地区：[1]延长油田股份有限公司,陕西延安716000

出　　处：《非常规油气》2020年第2期83-87,共5页Unconventional Oil & Gas

摘　　要：以鄂尔多斯盆地南部旬邑探区延长组长8段作为研究对象,通过总结研究区致密油储层、流体、地层压力、裂缝等特征,结合试油试采等数据,建立水平井产量优势模型,分析了“水平井”模式开采致密油的优势。结果表明“水平井”模式开采致密油的日产量相较于直井其比值系数成倍数增长,旬邑长8致密油Ⅱ类达到了57.6;旬邑1口水平井2017年试油试采产油2400 t,同期145口直井累计产油仅为80.08 t,水平井与直井年累计产量比值达到119.88倍。本文的研究为旬邑地区延长组致密油勘探和开发提供了新的思路。Taking Chang-8 member of Yanchang formation in Xunyi County exploration area in the south of Ordos Basin as the research object,through summarizing the characteristics of tight oil reservoir,fluid,formation pressure,fractures,and combining the data of oil test and production,the production advantage model of horizontal well was established,and the advantage of producing dense oil with“horizontal well”mode was analyzed.The results show that the daily production of tight oil in“horizontal well”mode increases exponentially compared with that in straight well,and the density oil II of Xunyi Chang-8 reaches 57.6.The production of 2400 t in 2017 in one horizontal well in Xunyi,the cumulative production of 145 vertical wells in the same period was only 80.08 t,and the ratio of the cumulative production of horizontal wells to vertical wells reached 119.88 times.The study of this paper provides a new idea for exploration and development of tight oil of Yanchang formation in Xunyi area.

关 键 词：致密油 非均质性 裂缝 水平井 

分 类 号：P618.13[天文地球—矿床学]