A unified model for the formation and distribution of both conventional and unconventional hydrocarbon reservoirs  

作　　者：Xiongqi Pang Chengzao Jia Junqing Chen Maowen Li Wenyang Wang Qinhong Hu Yingchun Guo Zhangxin Chen Junwen Peng Keyu Liu Keliu Wu 

机构地区：[1]State Key Laboratory of Petroleum Resources and Prospecting,Beijing 102249,China [2]College of Geosciences,China University of Petroleum-Beijing,Beijing 102249,China [3]Exploration&Development Research Institute,China National Petroleum Corporation,Beijing 100724,China [4]College of Science,China University of Petroleum-Beijing,Beijing 102249,China [5]State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,Beijing 100083,China [6]Chemical and Petroleum Engineering,Schulich School of Engineering,University of Calgary,Calgary T2N 1N4,Canada [7]The University of Texas at Arlington,Arlington,TX 76019,USA [8]Institue of Geomechanics,China Academy of Geological Science,Beijing 100081,China [9]Bureau of Economic Geology,University of Texas at Austin,Austin TX 78713,USA [10]CSIRO Energy,26 Dick Perry Ave,Kensington,WA 6151,Australia

出　　处：《Geoscience Frontiers》2021年第2期695-711,共17页地学前缘（英文版）

基　　金：the Joint Fund of the National Natural Science Foundation of China under funding number of U19B6003-02-04;the fund of A Theoretical Study of Marine Petroliferous System,Sichuan Basin,and the Science Foundation of China University of Petroleum,Beijing under funding number of 2462020BJRC005.

摘　　要：The discovery and large-scale exploration of unconventional oil/gas resources since 1980s have been considered as the most important advancement in the history of petroleum geology;that has not only changed the balance of supply and demand in the global energy market,but also improved our understanding of the formation mechanisms and distribution characteristics of oil/gas reservoirs.However,what is the difference of conventional and unconventional resources and why they always related to each other in petroliferous basins is not clear.As the differences and correlations between unconventional and conventional resources are complex challenging issues and very critical for resources assessment and hydrocarbon exploration,this paper focused on studying the relationship of formations and distributions among different oil/gas reservoirs.Drilling results of 12,237 exploratory wells in 6 representative petroliferous basins of China and distribution characteristics for 52,926 oil/gas accumulations over the world were applied to clarify the formation conditions and genetic relations of different oil/gas reservoirs in a petroliferous basin,and then to establish a unified model to address the differences and correlations of conventional and unconventional reservoirs.In this model,conventional reservoirs formed in free hydrocarbon dynamic field with high porosity and permeability located above the boundary of hydrocarbon buoyancy-driven accumulation depth limit.Unconventional tight reservoirs formed in confined hydrocarbon dynamic field with low porosity and permeability located between hydrocarbon buoyancy-driven accumulation depth limit and hydrocarbon accumulation depth limit.Shale oil/gas reservoirs formed in the bound hydrocarbon dynamic field with low porosity and ultra-low permeability within the source rock layers.More than 75%of proved reserves around the world are discovered in the free hydrocarbon dynamic field,which is estimated to contain only 10%of originally generated hydrocarbons.Most of undiscovered resourc

关 键 词：Fossil fuels Hydrocarbon resources Unified model of reservoirs formation Hydrocarbon reservoirs Hydrocarbon accumulation Hydrocarbon dynamic field 

分 类 号：P618.13[天文地球—矿床学]