鄂尔多斯盆地志丹探区长2+3油藏类型对比及评价 |
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作者单位: | ;1.西安石油大学地球科学与工程学院;2.中国地质调查局西安地质调查中心;3.西北大学地质学系大陆动力学国家重点实验室 |
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摘 要: | 鄂尔多斯盆地志丹探区长2+3油藏差异类型较大。通过构造、沉积和油气藏对比剖面研究,结果表明:1)志丹探区长2+3油藏主要类型有岩性圈闭油藏、构造—岩性圈闭油藏、岩性—构造圈闭油藏;2)志丹探区典型岩性油藏分布在长23、长33层位,产量较低;构造—岩性油藏主要分布在长21、长23层位,产量较低;岩性—构造油藏主要分布在长21,主要受构造控制,产量较高;3)受构造、岩性圈闭控制因素影响,构造控制油藏产能相对大于岩性控制油。
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关 键 词: | 鄂尔多斯盆地 志丹探区 油藏类型 岩性圈闭 岩性—构造圈闭 构造—岩性圈闭 |
Comparison and evaluation of reservoir type of long 23 reservoir in Zhidan exploration area of Ordos Basin |
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Affiliation: | ,School of Geosciences and Engineering, Xi'an Petroleum University,China Geological Survey Bureau Xi'an Geological Survey Center,Department of Geology, Northwestern University Key Laboratory |
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Abstract: | The reservoir types of Chang2+3 in Zhidan exploration area of Ordos Basin are quite different. The results show that: 1) main types of reservoir in Chang2 +3 of Zhidan exploration area include lithologic trap reservoir, structure-lithologic trap reservoir, and lithological-tectonic trap reservoir. 2) typical lithologic reservoirs in Zhidan exploration area are distributed in Chang23 and Chang33 strata, with low production. Structure-lithologic reservoirs are mainly distributed in Chang21 and Chang23 strata, with low production. Lithology-structure reservoirs are mainly distributed in Chang21, which are mainly controlled by structure and have high yield. 3) affected by structural and lithologic trap control factors, the productivity of structure-controlled reservoir is relatively higher than that of lithologically controlled oil. |
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Keywords: | Ordos basin Zhidan exploration area Reservoir type Lithologic trap Lithology structure trap Structure-lithologic trap |
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