| 准噶尔盆地陆东-五彩湾地区石炭系火山岩电性与地震响应特征 |
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| 引用本文： | 吴晓智,李建忠,杨迪生,张丛侦,侯连华,郑曼.准噶尔盆地陆东-五彩湾地区石炭系火山岩电性与地震响应特征[J].地球物理学报,2011,54(2):481-490. |
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| 作者姓名： | 吴晓智 李建忠 杨迪生 张丛侦 侯连华 郑曼 |
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| 作者单位： | 1. 中国地质大学能源学院, 北京 100083;
2. 石油勘探开发科学研究院,北京 100083;
3. 中国石油新疆油田分公司,新疆克拉玛依 834000 |
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| 基金项目： | 国家重点基础研究发展计划(973)项目 |
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| 摘 要： | 勘探实践证实,准噶尔盆地石炭系已成为一套现实勘探层系;陆东-五彩湾地区石炭系火山岩体规模大、分布广,是重要的天然气储集体;火山岩储层有效性主要受不整合、岩性、岩相控制,识别火山结构、火山岩岩性、岩相成为判别储层有效性的关键.由于主要目的层巴塔玛依内山组特殊的三段式火山岩组合层序结构,为通过测井、地震物探手段识别火山岩岩...
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| 关 键 词： | 火山岩 电性特征 地震响应 石炭系 陆东-五彩湾 准噶尔盆地 |
| 收稿时间： | 2010-06-29 |
The electric characteristics and seismic response of Carboniferous volcanic rock in Ludong-Wucaiwan area of Junngar basin |
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| WU Xiao-Zhi,LI Jian-Zhong,YANG Di-Sheng,ZHANG Cong-Zhen,HOU Lian-Hua,ZHENG Man.The electric characteristics and seismic response of Carboniferous volcanic rock in Ludong-Wucaiwan area of Junngar basin[J].Chinese Journal of Geophysics,2011,54(2):481-490. |
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| Authors: | WU Xiao-Zhi LI Jian-Zhong YANG Di-Sheng ZHANG Cong-Zhen HOU Lian-Hua ZHENG Man |
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| Institution: | 1. The Energy College China Geology University,Beijing 100083, China;
2. Research Insitute of Petroleum Exploration & Development,Beijing 100083, China;
3. Xinjiang Oilfield Company, PetroChina, Karamy 834000, China |
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| Abstract: | It has been proved by practice of exploration that the Carboniferous System in the Junggar Basin is a set of prospective strata of actual exploring. The carboniferous volcanic rock has a large scale and a wide distribution in the Ludong-Wucaiwan area, and is an important reservoir rock of gas. The availability of volcanic reservoir rock is mainly influenced by unconformity, lithology and lithofacies control. Hence, the key to judge the availability of reservoir are to identify volcanic architecture, volcanic rock lithology and lithofacies. The major bed of interest called Batamayineishan Formation has a special triple architecture of volcanic rock sequence, which facilitates the identification of volcanic rock lithology and lithofacies through logging and seismic geophysical prospecting. Basic lavas have the features of high density, high resistivity and high electrical properties of natural gamma. Intermediate basic lavas are similar to basic lavas, but they have low electrical properties of natural gamma. On the contrary, volcanic breccia facies have a low resistivity and medium to low density, but have high electrical properties of natural gamma. Similarly, tuff, whose density is lower, also have the features like volcanic breccia. In addition, intermediate acid lavas have the features between the two extremes, with slightly high electrical properties of natural gamma. The upper segment and the lower segment which are volcanic rocks show the discontinuous mounded reflection or chaotic refection, but the middle segment which is sedimentary rock displays stronger amplitude and more continuous parallel and sub-parallel reflection. According to the characters of composite wave reflection configuration, it is possible to identify three volcanic rock architectures which are layered volcano, konide and hypabyssal intrusive, respectively. Volcanic rock reservoirs all belong to the type of weathering crust reservoirs and the reservoir availabilities are controlled by lithology and lithofacies. The sub-facies nearby the volcanic vents mainly develop in the Dinan bulge zone, Dibei bulge zone, Shixi-Shinan bulge zone, the south and north margins of Wucaiwan Sag and the north of Baijiahai. Most of the sub-facies which are far away from volcanic vents develop on the east and west sides of sub-facies after the volcano explode. Effluence facies mainly distribute in South-North major faults. The weathering crust reservoirs which are coupled with nearby structures, lithology and lithofacies, are the best to form the oil/gas reservoir, which form the stratigraphy-lithology origin volcanic rock gas reservoirs in the tectonic settings. |
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| Keywords: | Volcanic rock Electrical character Seismic response Carboniferous Ludong-Wucaiwan Junggar Basin |
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