周河区周51井区南部油藏评价
发布时间：2018-08-27 09:08
【摘要】：油田开发中划分层系是方案设计重要的方面,也是基础,是提高油田开发效果的重要途径。周51井区位于陕西省志丹县境内,具体位置是北至北至周46井,南到周118井,西起周93井,东抵周11井,控制范围约为50km2。目前,本作业区内有油井、探井等各类共129口。2000年开始对周51井区进行油气勘探,到2009年底共钻井129口,其中探井1口,生产井128口。本次只针对长6地层开展工作。具生、储、盖组合的地层厚度达1000~1500m,具备相当巨大油气开发潜力。本论文以志丹周51井区块为研究对象,针对周51井区块的岩石学特征、裂缝、孔隙结构特征及油藏的非均质性特征。研究按照延长油矿统一划分方案,对比过程中优先选择了自然电位曲线、自然伽马,梯度电阻率及声波时差曲线进行综合分析,寻找各级标志层。根据地层划分原则和方法及标志层的特征,以测井曲线和钻遇油砂体深度数据为基础,按沉积旋回所反映出测井曲线形态组合相似性,采取旋回对比、分级控制、考虑横向相变的原则,对周51井区长6油层组进行了对比。方案结论预期2013-2014年为建产期,2013年周51井区单井产量1.9t/d,初始含水26.6%,年产油2.85×104t。预计到2027年(评价期15年),累计产油26.84×104t,含水72.36%,采出程度1.91%,作业期间最大的递减率为11%,递减率平均为7.5%,年采油速度平均为0.12%。
[Abstract]:The well area of Zhou51 is located in Zhidan County, Shaanxi Province. The specific location is well from north to Zhou46, well from south to Zhou118, well from west to Zhou93, well from east to Zhou11, and the control range is about 50 km 2. At present, there are oil wells in this operation area. There are 129 wells and other types of wells in Zhou51 well area. From 2000 to the end of 2009, 129 wells were drilled, including one exploration well and 128 production wells. This work is only aimed at Chang6 formation. The thickness of the formation with living, reservoir and cap assemblage is 1000-1500m, which has great potential for oil and gas development. According to the unified division scheme of Yanchang Oil Deposit, the natural potential curve, natural gamma ray, gradient resistivity and sonic time difference curve are selected as the priority for comprehensive analysis in the process of correlation, and the marker layers at all levels are found. On the basis of logging curves and depth data of drilled oil sands, and according to the similarity of logging curves reflected by sedimentary cycles, the principle of cyclic correlation, hierarchical control and transverse phase transformation are adopted to compare the Chang 6 reservoir group in Zhou51 well area. The single well production of Zhou51 well area in 2013 is 1.9 t/d, initial water cut is 26.6%, annual oil production is 2.85 x 104 t.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;TE34
[Abstract]:The well area of Zhou51 is located in Zhidan County, Shaanxi Province. The specific location is well from north to Zhou46, well from south to Zhou118, well from west to Zhou93, well from east to Zhou11, and the control range is about 50 km 2. At present, there are oil wells in this operation area. There are 129 wells and other types of wells in Zhou51 well area. From 2000 to the end of 2009, 129 wells were drilled, including one exploration well and 128 production wells. This work is only aimed at Chang6 formation. The thickness of the formation with living, reservoir and cap assemblage is 1000-1500m, which has great potential for oil and gas development. According to the unified division scheme of Yanchang Oil Deposit, the natural potential curve, natural gamma ray, gradient resistivity and sonic time difference curve are selected as the priority for comprehensive analysis in the process of correlation, and the marker layers at all levels are found. On the basis of logging curves and depth data of drilled oil sands, and according to the similarity of logging curves reflected by sedimentary cycles, the principle of cyclic correlation, hierarchical control and transverse phase transformation are adopted to compare the Chang 6 reservoir group in Zhou51 well area. The single well production of Zhou51 well area in 2013 is 1.9 t/d, initial water cut is 26.6%, annual oil production is 2.85 x 104 t.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;TE34
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