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Calculating single layer production contribution of heavy oil commingled wells by analysis of aromatic parameters in whole-oil GC-MS

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Petroleum Science 2014年第1期11卷 89-96页

作者： Xu Yaohui Ma Li Li Linxiang Cui Wenfu Cheng Xiaowei Wang Xiaoping Institute of Geomechanics Chinese Academy of Geological Sciences Key Laboratory of Exploration Technologies for oil and Gas Resources of Ministry of Education Yangtze University gudong oil production plant of shengli oilfield subsidiary company SINOPEC

Traditional fluid production profile logging is not usually suitable for heavy-viscous crude oil *** of heavy oil can lead to the loss of n-alkanes,and the use of chromatogram fingerprint techniques in studying the production contributions of single layers in heavy oil commingled wells has ***,aromatic compounds are relatively well *** took the heavy oil commingled wells of small layers NG55 and NG61 in the ninth area of the gudong oil field as *** on the principle of chromatography,the whole-oil GC-MS was used,and the aromatic parameters which have a strongly linear relationship with the ratio of mixed two end member oils were verified and selected in *** showed that the ratio of （1,4,6-＋ 2,3,6-trimethylnaphthalene） to 1,2,5-trimethylnaphthalene has a strongly linear relationship with the ratio of the mixed two end member oils （R2=0.992）.The oil contributions from single layers NG55 and NG61 in six commingled heavy oil wells were calculated using established charts and this *** calculated results are consistent with the results of long period dynamic monitoring and logging interpretation in the study area and can provide a scientific basis for monitoring production performance and hierarchical management of *** study provides a new geochemical method for calculation of the contributions of single layers in heavy oil commingled wells when conventional fluid production profile logging is not suitable.

关键词： Whole-oil GC-MS aromatic parameters commingled producing wells single layer production the ninth area of the gudong oilfield

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Quantitative description of characteristics of high-capacity channels in unconsolidated sandstone reservoirs using in situ production data

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Petroleum Science 2010年第1期7卷 106-111页

作者： Wang Xuezhong Wang Jianyong Wang Chuanfei Zeng Liufang Liu Xuewei Xinjiang Exploration ＆ production Center Shengli Oilfield Company Sinopec Dongying Shandong 257000 China Sinopec Beijing 100728 China China University of Petroleum Dongying Shandong 257061 China gudong oil production plant Shengli Oilfield Company Sinopec Dongying Shandong 257237 China Institute of Porous Flow ＆ Fluid Mechanics CNPC ＆ Chinese Academy of Sciences Langfang Hebei 065007 China

Quantitative description of the high-capacity channels in unconsolidated sandstone reservoirs, into which water was injected to improve oil recovery, is a hot topic in the field of reservoir development. This paper presents a novel approach to describing quantitatively the characteristics of connected macropores in unconsolidated sandstone reservoirs using in situ production data. Based on physical simulation for formation mechanisms of high capacity channels and interwell tracer test data, a mathematical model was established to describe high-capacity channels by grey correlation theory, flow mechanism of fluid in porous media and reservoir engineering, and a program was developed to describe quantitatively the channel characteristics. The predicted results were consistent with field monitoring data （80%）, so this model could be economically and effectively used to identify high-capacity channels.

关键词： High-capacity channel unconsolidated sandstone quantitative description physical simulation interwell tracer grey correlation theory

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