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2018, 37(1) 207-217 DOI:
10.3969/j.issn.1004-5589.2018.01.018 ISSN: 1004-5589 CN: 22-1111/P |
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Cretaceous hydrocarbon accumulation and favorable reservoir characteristics in Fulongquan sag |
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FU Mao1, WANG Fu-kui2, GAO Yu-hui3, LI Qing-sheng2, XU Wen-xiu4, WANG De-hai1 |
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1. College of Earth Sciences, Jilin University, Changchun 130061, China; 2. Chengde Petroleum College, Chengde 067000, Hebei, China; 3. Research Institute of Petroleum Exploration and Development, PetroChina Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China; 4. Fengcheng Oilfield Operation District, PetroChina Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China |
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Abstract��
Fulongquan sag is a second-order structural unit of the southeast uplift in Songliao Basin, and lies in an anticline belt with strong inversion structure. Based on the study of basic conditions of hydrocarbon accumulation in the study area, the authors summarize the hydrocarbon accumulation and favorable reservoir characteristics of Fulongquan sag. The oil and gas in Fulongquan sag mainly come from the source rocks of Shahezi Formation and Yingcheng Formation. The accumulation occurred in three periods:deposition period of Quantou-and Nenjiang formations, end-Nenjiang Formation structural period, and post-Nenjiang Formation period. Structure is the most important factor to control the hydrocarbon accumulation in Fulongquan sag, deep oil-gas reservoirs possess the characteristics of accumulation prior to the compaction and source-proximal early accumulation. The reservoir of early accumulation has better physical properties. Shallow reservoirs are all secondary accumulations, which are controlled by the tectonic movement at the end of Nenjiang Formation. |
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Keywords��
Songliao Basin
sag
hydrocarbon accumulation
reservoir
compaction
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Received 2017-05-19 Revised 2017-11-02 Online: |
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DOI: 10.3969/j.issn.1004-5589.2018.01.018 |
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Fund: |
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Corresponding Authors: |
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Email: wdh3608@126.com |
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