新疆石油地质

新疆石油地质 ›› 2005, Vol. 26 ›› Issue (2): 199-201.

• 应用技术 • 上一篇    下一篇

准噶尔盆地低幅度背斜圈闭识别方法——以盆5井区圈闭为例

李学义, 李天明, 王兵, 薛冽, 徐群洲   

  1. 中国石油 新疆油田分公司 勘探开发研究院 地球物理研究所，乌鲁木齐 830011
  • 收稿日期:2004-05-11 出版日期:2005-04-01 发布日期:2020-08-24
  • 作者简介:李学义(1965-),男,河南登封人,高级工程师,博士,石油地质,(Tel)0991-4299059.

Approach to Low-Amplitude Trap Identification in Junggar Basin一-An example of trap al Peng-5 Wellblock

LI Xue-yi, LI Tian-ming, WANG Bing, XUE Lie ,XU Qun-zhou   

  1. Institute of Geophysics, Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina,Urumqi, Xinjiang 830011, China
  • Received:2004-05-11 Online:2005-04-01 Published:2020-08-24

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摘要： 随着准噶尔盆地勘探的深入,图闭识别的难度越来越大,低幅度背斜圈闭的识别已成为人们关注的对象。以准噶尔盆地盆5井区圈闭识别为例,根据钻井结果和地震解释引发的矛盾,精细分析表层速度特征、地震速度资料,建立速度模型;利用模型正演和速度拟合以及速度模型建场方法,对盆5井区进行了重新构造成图研究。研究结果表明,盆5井区闭合面积应为40km2,闭合度应为40m,而不是5,6km2和12m,高点位置偏移4km,这一研究成果已被钻井所证实。

关键词: 准噶尔盆地, 构造, 圈闭, 地震波速度, 模型

Abstract: The stratigraphic trap idenification is becoming more and more difcult with progressing petroleum exploration in Junggar basin. How to find the low-amplitude traps in it? Taking P-5 Wellblock in Junggar basin as an example, this paper examines the inconsis-tence between drilling and seismic interpretation for its low-amplitude trap identification, and includes the detailed analysis of subsurface velocity feature and seismic velocity data and the development of the velocity model. With the model showing forward modeling and veloc-ity field modeling, remapping of the structure in P-5 Wellblock is made. The result shows that the existing trapping area becomes larger than before, and high spot moves four km toward southwest, which has been confirmed by drilling.

Key words: Junggar basin, structure, trap, seismic wave velocity, model

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