应用色谱指纹技术确定原油合采井单层产能贡献率——以吉木萨尔凹陷二叠系芦草沟组页岩油为例  

Application of Chromatographic Fingerprint Technology in Determining Contribution Rate of Single-Layer Productivity in Commingled Production Wells:A Case from Shale Oil of Permian Lucaogou Formation in Jimsar Sag

作　　者：李二庭 靳军 侯读杰[3] 李疆 米巨磊 姜玉涵 LI Erting;JIN Jun;HOU Dujie;LI Jiang;MI Julei;JIANG Yuhan(PetroChina Xinjiang Oilfield Company,Xinjiang Laboratory of Conglomerate Reservoirs,Karamay,Xinjiang 834000,China;PetroChina Xinjiang Oilfield Company,Research Institute of Experiment and Detection,Karamay,Xinjiang 834000,China;School of Energy Resources,China University of Geosciences,Beijing 100083,China;Karamay Drilling Company,Xibu Drilling Engineering Company,Karamay,Xinjiang 834000,China)

机构地区：[1]中国石油新疆油田分公司新疆砾岩油藏实验室,新疆克拉玛依834000 [2]中国石油新疆油田分公司实验检测研究院,新疆克拉玛依834000 [3]中国地质大学能源学院,北京100083 [4]中国石油西部钻探克拉玛依钻井公司,新疆克拉玛依834000

出　　处：《新疆石油地质》2019年第3期344-350,共7页Xinjiang Petroleum Geology

基　　金：国家自然科学基金(41272116)

摘　　要：基于色谱指纹技术的原理,通过配比实验,建立了吉木萨尔凹陷芦草沟组上甜点页岩油P2l2^2-1,P2l2^2-2和P2l2^2-3三个单层原油色谱指纹库,采用偏最小二乘法,实现了吉木萨尔凹陷芦草沟组上甜点两层和三层合采页岩油中单层的产能贡献率计算和动态监测。实验结果显示,吉木萨尔凹陷芦草沟组上甜点页岩油主要以P2l2^2-1小层和P2l2^2-2小层供烃,其中,以P2l2^2-1+P2l2^2-2两层合采的吉37井和吉171井主要以P2l2^2-1小层供烃;以P2l2^2-2+P2l2^2-3两层合采的吉25井和吉173井主要以P2l2^2-2小层供烃;以P2l2^2-1+P2l2^2-2+P2l2^2-3三层合采的吉31井以P2l2^2-2小层为主力供烃层,吉174井和吉176井主要以P2l2^2-1小层供烃,其次为P2l2^2-2小层供烃。另外,通过跟踪研究发现,随着开采的进行,吉174井和吉176井合采井P2l2^2-1小层产能贡献率逐渐降低,P2l2^2-2小层成为主力供烃层。将计算结果结合各单井的储集层物性和含油饱和度进行了分析,分析结果证明了计算结果的准确性和合理性。Based on the principle of chromatographic fingerprint and proportion tests, a chromatographic fingerprint map database for three single layers such as P2l2^2-1, P2l2^2-2 and P2l2^2-3 of the upper sweet spot shale oil in Jimsar sag is established. The partial least square method is used to realize the productivity contribution rate calculation and dynamic monitoring of the single layers during 2-layer and 3-layer commingled productions for shale oil in the upper sweet spot of Lucaogou formation in Jimsar sag. The result shows that P2l2^2-1 and P2l2^2-2 are the main contributors for shale oil production in the upper sweet spot of Lucaogou formation in Jimsar sag, among which P2l2^2-1 is the main contributor to the commingled production of P2l2^2-1 and P2l2^2-2 in Well Ji-37 and Well Ji-171;while P2l2^2-2 acts as the main contributor to the commingled production of P2l2^2-2 and P2l2^2-3 in Well Ji-25 and Well Ji-173. During the commingled production of P2l2^2-1 + P2l2^2-2 +P2l2^2-3, P2l2^2-2 provides most hydrocarbons in Well Ji-31, P2l2^2-1 is the main contributor and P2l2^2-2 is the minor contributor in Well Ji-174 and Well Ji-176. Additionally, the tracking study shows that the productivity contribution rate of P2l2^2-1 gradually decreases in wells Ji-174 and Ji-176 and P2l2^2-2 becomes the major hydrocarbon provider. An analysis is performed by combining the calculation results with the corresponding reservoir physical properties and oil saturation of each well, which proves the accuracy and rationality of the calculation results.

关 键 词：吉木萨尔凹陷 芦草沟组 页岩油 色谱指纹技术 产能贡献率 合采 最小二乘法 

分 类 号：TE19[石油与天然气工程—油气勘探]