Petroleum geological features and hydrocarbon enrichment of Linhe Depression in Hetao Basin, NW China
Based on paleogeomorphology, drilling and seismic data, this paper systematically studies the structural and sedimentary evolution, source rock characteristics, reservoir characteristics and formation mechanism, hydrocarbon accumulation model and enrichment law in the Linhe Depression of the Hetao B...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-08-01
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| Series: | Petroleum Exploration and Development |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S187638042360429X |
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| author | Ruifeng ZHANG Haiqing HE Qingzhong ZHU Shuguang CHEN Xiheng LIU Weining DAN Yanxu HU Yulei SHI Yufei ZHANG Haijun YU Ximeng ZHANG |
| author_facet | Ruifeng ZHANG Haiqing HE Qingzhong ZHU Shuguang CHEN Xiheng LIU Weining DAN Yanxu HU Yulei SHI Yufei ZHANG Haijun YU Ximeng ZHANG |
| author_sort | Ruifeng ZHANG |
| collection | DOAJ |
| description | Based on paleogeomorphology, drilling and seismic data, this paper systematically studies the structural and sedimentary evolution, source rock characteristics, reservoir characteristics and formation mechanism, hydrocarbon accumulation model and enrichment law in the Linhe Depression of the Hetao Basin, NW China. The Hetao Basin mainly experienced three stages of evolution, namely, weak extensional fault depression, strong extensional fault depression and strike-slip transformation, giving rise to four positive structural belts (Jilantai, Shabu, Nalinhu and Xinglong), which are favorable areas for oil and gas accumulation. The two main saline lacustrine source rocks, Lower Cretaceous Guyang Formation and Oligocene Linhe Formation, are characterized by high sulfur content, rich algae, early maturity, early expulsion, and wide oil generation window. The large structural transition belt in the intermountain area around the Hetao Basin controls the formation of large-scale braided river delta deposits, which are characterized by high quartz content (50%–76%), long-term shallow burial and weak compaction, low cement content, and good reservoir properties in delta front sandbody. The burial depth of the effective Paleogene reservoirs is predicted to reach 8000 m. Three hydrocarbon accumulation models, nose-uplift near sag, buried hill surrounding sag, fault nose near source rock, are constructed. The law of hydrocarbon accumulation in the Linhe Depression is finally clarified as follows: near-source around the depression is the foundation, high-quality thick reservoir is the premise, good tectonic setting and trap conditions are the key. |
| first_indexed | 2024-03-12T14:18:44Z |
| format | Article |
| id | doaj.art-ab0e675c738b4a398fd78e2ab481d4ad |
| institution | Directory Open Access Journal |
| issn | 1876-3804 |
| language | English |
| last_indexed | 2024-03-12T14:18:44Z |
| publishDate | 2023-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Petroleum Exploration and Development |
| spelling | doaj.art-ab0e675c738b4a398fd78e2ab481d4ad2023-08-20T04:37:38ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042023-08-01504798811Petroleum geological features and hydrocarbon enrichment of Linhe Depression in Hetao Basin, NW ChinaRuifeng ZHANG0Haiqing HE1Qingzhong ZHU2Shuguang CHEN3Xiheng LIU4Weining DAN5Yanxu HU6Yulei SHI7Yufei ZHANG8Haijun YU9Ximeng ZHANG10PetroChina Huabei Oilfield Company, Renqiu 062552, ChinaPetroChina Oil & Gas and New Energy Company, Beijing 100007, ChinaPetroChina Huabei Oilfield Company, Renqiu 062552, ChinaPetroChina Huabei Oilfield Company, Renqiu 062552, China; Corresponding authorPetroChina Huabei Oilfield Company, Renqiu 062552, ChinaPetroChina Huabei Oilfield Company, Renqiu 062552, ChinaPetroChina Huabei Oilfield Company, Renqiu 062552, ChinaPetroChina Huabei Oilfield Company, Renqiu 062552, ChinaLogging Technology Research Institute of CNPC Logging Company, Beijing 100007, ChinaNo.2 Mud Logging Company, CNPC Bohai Drilling Engineering Company Limited, Renqiu 062552, ChinaPetroChina Huabei Oilfield Company, Renqiu 062552, ChinaBased on paleogeomorphology, drilling and seismic data, this paper systematically studies the structural and sedimentary evolution, source rock characteristics, reservoir characteristics and formation mechanism, hydrocarbon accumulation model and enrichment law in the Linhe Depression of the Hetao Basin, NW China. The Hetao Basin mainly experienced three stages of evolution, namely, weak extensional fault depression, strong extensional fault depression and strike-slip transformation, giving rise to four positive structural belts (Jilantai, Shabu, Nalinhu and Xinglong), which are favorable areas for oil and gas accumulation. The two main saline lacustrine source rocks, Lower Cretaceous Guyang Formation and Oligocene Linhe Formation, are characterized by high sulfur content, rich algae, early maturity, early expulsion, and wide oil generation window. The large structural transition belt in the intermountain area around the Hetao Basin controls the formation of large-scale braided river delta deposits, which are characterized by high quartz content (50%–76%), long-term shallow burial and weak compaction, low cement content, and good reservoir properties in delta front sandbody. The burial depth of the effective Paleogene reservoirs is predicted to reach 8000 m. Three hydrocarbon accumulation models, nose-uplift near sag, buried hill surrounding sag, fault nose near source rock, are constructed. The law of hydrocarbon accumulation in the Linhe Depression is finally clarified as follows: near-source around the depression is the foundation, high-quality thick reservoir is the premise, good tectonic setting and trap conditions are the key.http://www.sciencedirect.com/science/article/pii/S187638042360429XHetao BasinLinhe DepressionCretaceous Guyang FormationPaleogene Linhe FormationJilantai OilfieldBayan Oilfield |
| spellingShingle | Ruifeng ZHANG Haiqing HE Qingzhong ZHU Shuguang CHEN Xiheng LIU Weining DAN Yanxu HU Yulei SHI Yufei ZHANG Haijun YU Ximeng ZHANG Petroleum geological features and hydrocarbon enrichment of Linhe Depression in Hetao Basin, NW China Petroleum Exploration and Development Hetao Basin Linhe Depression Cretaceous Guyang Formation Paleogene Linhe Formation Jilantai Oilfield Bayan Oilfield |
| title | Petroleum geological features and hydrocarbon enrichment of Linhe Depression in Hetao Basin, NW China |
| title_full | Petroleum geological features and hydrocarbon enrichment of Linhe Depression in Hetao Basin, NW China |
| title_fullStr | Petroleum geological features and hydrocarbon enrichment of Linhe Depression in Hetao Basin, NW China |
| title_full_unstemmed | Petroleum geological features and hydrocarbon enrichment of Linhe Depression in Hetao Basin, NW China |
| title_short | Petroleum geological features and hydrocarbon enrichment of Linhe Depression in Hetao Basin, NW China |
| title_sort | petroleum geological features and hydrocarbon enrichment of linhe depression in hetao basin nw china |
| topic | Hetao Basin Linhe Depression Cretaceous Guyang Formation Paleogene Linhe Formation Jilantai Oilfield Bayan Oilfield |
| url | http://www.sciencedirect.com/science/article/pii/S187638042360429X |
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