Distribution of shallow water delta sand bodies and the genesis of thick layer sand bodies of the Triassic Yanchang Formation, Longdong Area, Ordos Basin
Based on the cores from 47 wells and logging data of 130 wells, the main types of sand bodies in the shallow water delta of the Chang 82 sub-member in the Triassic Yanchang Formation, Longdong Area, Ordos Basin were comprehensively analyzed, the distribution characteristics of sand bodies more than...
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2021-02-01
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doaj-a42235136be341879e70e6d58fc3dfe22021-02-17T04:11:26ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042021-02-01481123135Distribution of shallow water delta sand bodies and the genesis of thick layer sand bodies of the Triassic Yanchang Formation, Longdong Area, Ordos BasinHanlin LIU0Zhen QIU1Liming XU2Fengqin WANG3Qiang TONG4Jiahao LIN5Shuai YIN6Wenqiang WANG7PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China; School of Earth and Space Sciences, Peking University, Beijing 100871, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China; Corresponding authorPetroChina Changqing Oilfield Company, Xi'an 710021, ChinaCollege of Geosciences and Engineering, Xi'an Shiyou University, Xi'an 710065, ChinaState Key Laboratory of Continental Dynamics/Department of Geology, Northwest University, Xi'an 710069, ChinaNo.3 Gas Production Plant, PetroChina Changqing Oilfield Company, Wushenqi 017300, ChinaCollege of Geosciences and Engineering, Xi'an Shiyou University, Xi'an 710065, ChinaState Key Laboratory of Petroleum Resources and Prospecting, College of Geosciences, China University of Petroleum (Beijing), Beijing 102249, ChinaBased on the cores from 47 wells and logging data of 130 wells, the main types of sand bodies in the shallow water delta of the Chang 82 sub-member in the Triassic Yanchang Formation, Longdong Area, Ordos Basin were comprehensively analyzed, the distribution characteristics of sand bodies more than 20 m thick were identified, and the genetic types of the thick sand bodies were sorted out. In this region, thick-bed sand bodies can be divided into two types according to the shape and position: type 1 is the sand body in wide strip and is distributed between the average high water mark and the average low water mark; type 2 is distributed on both sides of the average low water mark and is in irregular lump shape. Based on the principle of the volume distribution of sediments and the change rule of accommodation space, the genetic models of two types of thick-bed sand bodies in the Chang 82 sub-member are superimposed distributary channel sand bodies in high accommodation space and superimposed composite sand bodies in low accommodation space.http://www.sciencedirect.com/science/article/pii/S1876380421600095Ordos BasinLongdong areashallow deltasand body distributionsand body genetic typeTriassic Yanchang Formation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hanlin LIU Zhen QIU Liming XU Fengqin WANG Qiang TONG Jiahao LIN Shuai YIN Wenqiang WANG |
spellingShingle |
Hanlin LIU Zhen QIU Liming XU Fengqin WANG Qiang TONG Jiahao LIN Shuai YIN Wenqiang WANG Distribution of shallow water delta sand bodies and the genesis of thick layer sand bodies of the Triassic Yanchang Formation, Longdong Area, Ordos Basin Petroleum Exploration and Development Ordos Basin Longdong area shallow delta sand body distribution sand body genetic type Triassic Yanchang Formation |
author_facet |
Hanlin LIU Zhen QIU Liming XU Fengqin WANG Qiang TONG Jiahao LIN Shuai YIN Wenqiang WANG |
author_sort |
Hanlin LIU |
title |
Distribution of shallow water delta sand bodies and the genesis of thick layer sand bodies of the Triassic Yanchang Formation, Longdong Area, Ordos Basin |
title_short |
Distribution of shallow water delta sand bodies and the genesis of thick layer sand bodies of the Triassic Yanchang Formation, Longdong Area, Ordos Basin |
title_full |
Distribution of shallow water delta sand bodies and the genesis of thick layer sand bodies of the Triassic Yanchang Formation, Longdong Area, Ordos Basin |
title_fullStr |
Distribution of shallow water delta sand bodies and the genesis of thick layer sand bodies of the Triassic Yanchang Formation, Longdong Area, Ordos Basin |
title_full_unstemmed |
Distribution of shallow water delta sand bodies and the genesis of thick layer sand bodies of the Triassic Yanchang Formation, Longdong Area, Ordos Basin |
title_sort |
distribution of shallow water delta sand bodies and the genesis of thick layer sand bodies of the triassic yanchang formation, longdong area, ordos basin |
publisher |
KeAi Communications Co., Ltd. |
series |
Petroleum Exploration and Development |
issn |
1876-3804 |
publishDate |
2021-02-01 |
description |
Based on the cores from 47 wells and logging data of 130 wells, the main types of sand bodies in the shallow water delta of the Chang 82 sub-member in the Triassic Yanchang Formation, Longdong Area, Ordos Basin were comprehensively analyzed, the distribution characteristics of sand bodies more than 20 m thick were identified, and the genetic types of the thick sand bodies were sorted out. In this region, thick-bed sand bodies can be divided into two types according to the shape and position: type 1 is the sand body in wide strip and is distributed between the average high water mark and the average low water mark; type 2 is distributed on both sides of the average low water mark and is in irregular lump shape. Based on the principle of the volume distribution of sediments and the change rule of accommodation space, the genetic models of two types of thick-bed sand bodies in the Chang 82 sub-member are superimposed distributary channel sand bodies in high accommodation space and superimposed composite sand bodies in low accommodation space. |
topic |
Ordos Basin Longdong area shallow delta sand body distribution sand body genetic type Triassic Yanchang Formation |
url |
http://www.sciencedirect.com/science/article/pii/S1876380421600095 |
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