摘要：Based on the analysis of Upper Paleozoic source rocks, source-reservoir-caprock assemblage, and gas accumulation characteristics in the Ordos Basin, the gas accumulation geological model of total petroleum system is determined. Then, tak -ing the Carboniferous Benxi Formation and the Permian Taiyuan Formation and Shanxi Formation as examples, the main con-trolling factors of gas accumulation and enrichment are discussed, and the gas enrichment models of total petroleum system are established. The results show that the source rocks, faults and tight reservoirs and their mutual coupling relations control the distribution and enrichment of gas. Specifically, the distribution and hydrocarbon generation capacity of source rocks con-trol the enrichment degree and distribution range of retained shale gas and tight gas in the source. The coupling between the hydrocarbon generation capacity of source rocks and the physical properties of tight reservoirs controls the distribution and sweet spot development of near-source tight gas in the basin center. The far-source tight gas in the basin margin is mainly controlled by the distribution of faults, and the distribution of inner-source, near-source and far-source gas is adjusted and re-formed by faults. Generally, the Upper Paleozoic gas in the Ordos Basin is recognized in four enrichment models: inner-source coalbed gas and shale gas, inner-source tight sandstone gas, near-source tight gas, and far-source fault-transported gas. In the Ordos Basin, inner-source tight gas and near-source tight gas are the current focuses of exploration, and inner-source coalbed gas and shale gas and far-source gas will be important potential targets in the future.

关键字：Upper Paleozoic; tight gas; total petroleum system; gas accumulation characteristics; gas enrichment model; Or-dos Basin

ISSN号：1000-0747

卷、期、页：卷50期2: 281-292

发表日期：2023-04-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：Petroleum Exploration and Development

参与作者：贾承造,Lin, Jiang,Zhang, Chunlin,Ma, Xingzhi

通讯作者：齐振国

第一作者：姜福杰,庞雄奇,陈君青,庞宏,胡涛,陈冬霞

论文类型：期刊论文

论文概要：姜福杰,贾承造,庞雄奇,Lin, Jiang,Zhang, Chunlin,Ma, Xingzhi,齐振国,陈君青,庞宏,胡涛,陈冬霞，Upper Paleozoic total petroleum system and geological model of natural gas enrichment in Ordos Basin, NW China，Petroleum Exploration and Development，2023，卷50期2: 281-292

论文题目：Upper Paleozoic total petroleum system and geological model of natural gas enrichment in Ordos Basin, NW China