收稿日期: 2010-05-24
修回日期: 2010-09-15
网络出版日期: 2011-06-10
基金资助
国家科技重大专项(编号:2008ZX05001-006)资助.
Sedimentary Facies of Permian Clastic Rocks in Zhongguai-Wuba Area in Northwestern Margin of Junggar Basin
Received date: 2010-05-24
Revised date: 2010-09-15
Online published: 2011-06-10
准噶尔盆地西北缘中拐—五八区是有利的石油勘探区带,沉积相空间分布对油气勘探具有重要的控制作用。结合该区二叠系的钻井\,测井以及录井等资料的分析,认为准噶尔盆地西北缘中拐—五八区二叠系是在石炭系发育的火山岩基底上沉积的一套碎屑岩地层,沉积环境由冲积扇\,扇三角洲组成,发育扇根、扇中、扇端、扇三角洲平原、扇三角洲前缘及前扇三角洲等6类亚相,每种亚相具有不同的沉积特征,还可以划分出不同的微相。基于沉积相的空间展布,认为该区物源主要来自西部红车逆冲断裂带附近的中拐凸起,物源组分为火山碎屑。并且由于构造隆升的阶段性,该区从佳木河组一直到夏子街组发育时期,沉积范围由下段到上段逐渐向东部玛湖凹陷萎缩,表现为湖盆沉积基准面下降,可容纳空间减小;而在乌尔禾组发育时期,湖盆水域扩大,沉积基准面上升,整个地区接受了统一的沉积。由于该地区构造—沉积作用的独特性,对该区不同类型的油气藏的成藏过程具有较好的控制作用,是今后油气勘探的重点区带。
李兵, 党玉芳, 贾春明, 史基安, 张顺存 . 准噶尔盆地西北缘中拐—五八区二叠系碎屑岩沉积相特征[J]. 天然气地球科学, 2011 , 22(3) : 432 -439 . DOI: 10.11764/j.issn.1672-1926.2011.03.432
The northwest margin of Junngar basin as a continental foreland-basin exists the profitable target of oil and gas. The sedimentary facies space is important for oil and gas exploration. The Permian clastics at the tope of Carboniferous volcanic in the Zhongguai-Wuba area at the northwest margin of Junngar basin is identified by logging data. By means of well logging,mud logging and rock slices,the sedimentary environment is divided alluvium and fan-delta,and subdivided into fan-root,fan-bosom,fan-edge,fan delta plain,fan delta foreside,and frontal fan delta. Each sub-facies consist into several micro-facies. Based on the sedimentary facies space,we consider that the deposits would be sourced from volcanic rocks in the Zhongguai bulge near the western part of the Hongche thrust faulting belt. The phase of tectonic uplift caused the sedimentary scope shrunk gradually from lower segment to upper segment during the Jiamuhe and Xiazijie Periods. At the Wuerhe Period,the spread of water area and depositional base level rise caused continues deposition. The unique character of the structure and sedimentation in this area formed the preferable targets of oil and gas accumulation in the future exploration of oil and gas.
Key words: Sedimentary facies; Favorable zones; Zhongguai; Wuba area; Northwest Junngar basin.
[1]Jia Chengzao,Zhao Zhengzhang,Du Jinhu,et al.PetroChina key exploration domains:Geological cognition,core technology,exploration effect and exploration direction[J].Petroleum Exploration and Development,2008,35(4):385-396.[贾承造,赵政璋,杜金虎,等.中国石油重点勘探领域——地质认识、核心技术、勘探成效及勘探方向[J].石油勘探与开发,2008,35(4):385-396.]
[2]Bilotti F,Shaw J H.Deep-water Niger delta fold and thrust belt modeled as a critical-taper wedge:The influence of elevated basal fluid pressure on structural styles[J].AAPG Bulletin,2005,89(11):1475-1491.
[3]Doyel J D,Sweet M L.Three dimensional distribution of lithofacies,bounding surfaces,porosity and permeability in a fluvial sandstone Gypsy sandstone of north Oklahoma[J].AAPG Bulletin,1995,79(1):70-96.
[4]He Dengfa,Yin Cheng,Du Shekuan,et al.Characteristics of structural segmentation of foreland thrust belts:A case study of the fault belts in the northwesternmargin of Junggar basin[J].Earth Science Frontiers,2004,11(3):91-101.[何登发,尹成,杜社宽,等.前陆冲断带构造分段特征——以准噶尔盆地西北缘断裂构造带为例[J].地学前缘,2004,11(3):91-101.]
[5]Sun Guoqiang,Zheng Jianjing,Su Long,et al.Mesozoic-Cenozoic tectonic evolution in northwestern Qaidam basin[J].Natural Gas Geoscience,2010,21(2):212-217.[孙国强,郑建京,苏龙,等.柴达木盆地西北区中—新生代构造演化过程研究[J].天然气地球科学,2010,21(2):212-217.]
[6]Tao Guoliang,Hu Wen,Zhang Yijie,et al.NW-trending transverse faults and hydrocarbon accumulation in the northwestern margin of Junggar basin[J].Acta Petrolei Sinica,2006,27(4):23-28.[陶国亮,胡文,张义杰,等.准噶尔盆地西北缘北西向横断裂与油气成藏[J].石油学报,2006,27(4):23-28.]
[7]Jia Fanjian,Yao Weijiang,Liang Zeliang,et al.Diagenic feature and evolution of reservoir pore of permian reservoir under the Kebai fault in the northwestern margin,Junggar basin[J].Natural Gas Geoscience,2010,21(3):458-463.[贾凡建,姚卫江,梁则亮,等.准噶尔盆地西北缘克百断裂下盘二叠系储层成岩作用特征及其孔隙演化[J].天然气地球科学,2010,21(3):458-463.]
[8]Mu Zhonghai,Liu Jishan,Xu Jie.Lithofacies of canic rock at the top of upper Carboniferous stratigraphy in Luxi area of Junggar basin[J].Natural Gas Geoscience,2010,21(1):47-53.[牟中海,刘继山,徐洁.准噶尔盆地陆西地区上石炭统上层序火山岩岩相研究[J].天然气地球科学,2010,21(1):47-53.]
[9]Kuang Jun,Qi Xuefeng.The structural characteristics and oil-gas explorative direction in Junggar foreland basin[J].Xinjiang Petroleum Geology,2006,27(1):5-9.[况军,齐雪峰.准噶尔前陆盆地构造特征与油气勘探方向[J].新疆石油地质,2006,27(1):5-9.]
[10]Wei Yuanjiang,Li Desheng,Hu Suyun,et al.Fans sedimentation and exploration direction of fan hydrocarbon reservoirs in foreland thrust belt of the northwestern Junggar basin[J].Acta Geoscientica Sinica,2007,28(1):62-71.[蔚远江,李德生,胡素云,等.准噶尔盆地西北缘扇体形成演化与扇体油气藏勘探[J].地球学报,2007,28(1):62-71.]
[11]Zhang Daowei,Zhang Shuncun,Shi Ji′an.Reservoir characteristics of sand beds Ⅰ and Ⅱ in lower member of Xiaganchaigou Formation,Hongliuquan-Yuejin area and influence factors [J].Natural Gas Geoscience,2010,21(1):26-32.[张道伟,张顺存,史基安.红柳泉—跃进地区下干柴沟组下段(E1)Ⅰ和Ⅱ砂层组的储层特征及其影响因素浅析[J].天然气地球科学,2010,21(1):26-32.]
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