塔河缝洞型油藏试井曲线特征及储集体识别  

Well test curves and identification of fractured-vuggy reservoirs in Tahe Oilfield

作　　者：杨敏[1] 龙喜彬 潜欢欢[1] 程洪 YANG Min;LONG Xibin;QIAN Huanhuan;CHENG Hong(Petroleum Exploration&Production Research Institute,Sinopec Northwest Oilfield Company,Urumqi,Xinjiang 830013,China;The Third Oil Production plant,Sinopec Northwest Oilfield Company,Kuche,Xinjiang 842012,China)

机构地区：[1]中国石油化工股份有限公司西北油田分公司勘探开发研究院,新疆乌鲁木齐830013 [2]中国石油化工股份有限公司西北油田分公司采油三厂,新疆库车842012

出　　处：《油气井测试》2020年第3期64-70,共7页Well Testing

基　　金：国家科技重大专项“塔里木盆地碳酸盐岩油气田提高采收率关键技术示范工程”(2016ZX05053);中石化重大项目“塔河油田碳酸盐岩缝洞型油藏降低自然递减技术”(ZDP17002)。

摘　　要：塔河缝洞型油藏储层结构复杂,非均质性极强,试井曲线形态差异大,储集体类型难以识别。通过对试井曲线特征分析,结合单井静态地质资料和生产动态数据,认识了油藏流体的流动特征,将塔河缝洞型油藏不稳定试井曲线按形态分为六类,分别对应6种不同流动特征和储集体类型,形成了一套试井曲线与储集体类型对应的分类识别方法。应用该方法对T7井进行试井分析,认为该井所连通储集体规模较大,缝洞结构以串珠溶洞为主,产能较好,与地震等资料得到的储层特征相匹配。该方法为具有类似特征的试井资料选取合适解释模型、获取准确储集体特征信息奠定了基础,为单井合理开发政策的制定提供了参考依据。The fractured-vuggy reservoirs in Tahe Oilfield have complicated structures and strong heterogeneity,so that the well test curves are very different,and the reservoir types are difficult to identify.After analyzing the characteristics of the well test curves,and considering the static geological data and dynamic production data of individual wells,we understood the flow characteristics of the reservoir fluid,and divided the unstable well test curves of the fractured-vuggy reservoirs into six categories which correspond to six flow regimes and reservoir types,and finally we built a classification and identification method by relating well test curves with reservoir types.Using this method to analyze the test data of Well T7,it′s found that the well connects reservoirs on a large scale,and the reservoir space is dominated by bead-like karst vugs,and the productivity is good.This conclusion is well consistent with the result of seismic interpretation.This method is helpful to selecting suitable interpretation models for well test data with similar characteristics and obtaining accurate reservoir information.It also provides a reference to developing well development plan.

关 键 词：塔河油田 缝洞型油藏 试井曲线 流动特征 储集体识别 缝洞结构 分类方法 

分 类 号：TE353[石油与天然气工程—油气田开发工程]