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玛东斜坡达巴松扇典型油藏解剖及勘探领域优选
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  • 英文篇名:Investigation of the Typical Oil Reserves and Selection of Exploration Fields of the Dabasong Fan, Eastern Slope of the Mahu Depression
  • 作者:钱海涛 ; 白雨 ; 尤新才 ; 李鹏 ; 尹路
  • 英文作者:QIAN Haitao;BAI Yu;YOU Xincai;LI Peng;YIN Lu;Research Institute of Exploration and Development,Xinjiang Oilfield Company,PetroChina;Northwest Branch,Research Institute of Petroteum Exploration and Development,PetroChina;
  • 关键词:玛东斜坡 ; 达巴松扇 ; 百口泉组 ; 控制因素 ; 勘探领域
  • 英文关键词:eastern slope of the Mahu Depression;;Dabason Fan;;Baikouquan Formation;;controlling factor;;exploration field
  • 中文刊名:XNSY
  • 英文刊名:Journal of Southwest Petroleum University(Science & Technology Edition)
  • 机构:中国石油新疆油田分公司勘探开发研究院;中国石油勘探开发研究院西北分院;
  • 出版日期:2018-09-13 09:57
  • 出版单位:西南石油大学学报(自然科学版)
  • 年:2019
  • 期:v.41;No.192
  • 语种:中文;
  • 页:XNSY201901005
  • 页数:11
  • CN:01
  • ISSN:51-1718/TE
  • 分类号:60-70
摘要
准噶尔盆地玛湖凹陷东斜坡成藏条件优越,具备大面积含油特征,该区勘探程度低,是油气勘探的重点领域。为明确玛东斜坡油藏富集规律,进一步深化该区油气勘探,综合运用钻井、岩芯、地震及分析化验等资料,通过古地貌恢复、沉积相刻画及含砾中—粗砂岩储层预测等技术,对达巴松扇北翼DA13井区三叠系百口泉组油藏特征、主控因素及勘探领域进行了研究。结果表明,该油藏为断层-岩性油藏,主要受大型宽缓平台区、坡折、前缘有利相带及断裂共同控制,具有"构造控聚、坡折控砂、断层-岩性控藏"的成藏特征。在此基础上,通过类比成藏条件,明确了达巴松扇南翼与北翼具有类似的成藏背景与条件,通过单井相与地震相分析,指出了达巴松扇南翼坡下前缘有利相带广泛发育且发育多个断层-岩性圈闭,勘探潜力巨大,是下一步拓展玛东斜坡百口泉组油气勘探的有利领域。
        The eastern slope of the Mahu Depression in the Junggar Basin possesses excellent conditions for oil reserve formation and characteristics indicative of an oil reserve of large area. The region has been scarcely explored, so it is a key area for oil and gas exploration. To determine the oil reserve formation pattern along the eastern slope of the Mahu Depression and to allow in-depth oil and gas exploration in the region, data from boreholes, cores, seismology, and analytical tests were integrated and techniques such as palaeo-geomorphology reconstruction, sedimentary facies characterization, and reservoir prediction for gravel-containing medium to coarse sandstones were employed. The oil reserve characteristics, main controlling factors, and exploration fields of the Triassic Baikouquan Formation at the DA13 site in the north wing of the Dabasong Fan were examined.The results demonstrate that the oil reserve is a fault-lithologic reservoir and is mainly jointly controlled by faults and largescale wide and gentle platform zones, slope breaks, and favorable front facies belts. While oil accumulation and sand bodies are determined by tectonics and slope breaks, respectively, the reserve itself is controlled by both lithology and faults. Therefore,by comparing the reserve formation conditions, it is confirmed that the south and north wings of the Dabasong Fan have similar reserve formation backgrounds and conditions. By analyzing the single-well facies and the seismic facies, large-scale favorable front facies belts and multiple fault-lithological traps are noted under the south wing of the Dabasong Fan. The region has great potential for exploration and is the favorable site for expanding oil and gas exploration in the Baikouquan Formation along the eastern slope of the Mahu Depression.
引文
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