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Application of the depth-domain waveform inversion for identifying ultra-thin sandstone reservoir

Li HailiangZhang LipingWang HailongBi Jianjun

Research Institute of Petroleum Exploration & Development-Northwest,CNPCChina University of Mining and Technology-Beijing

摘要:Oil&gas exploration in Daqing oilfeild has long been focused on the thin and ultra-thin reservoirs in which the thickness of the target layers is generally about 2~5 m and the ultra-thin reservoirs account for 80%. Thus, deploying the horizontal wells can be a tricky task since the ultra-thin reservoirs are genenrally unstable in lateral dimension. The effectiveness of the traditional method in identifying the 2~5 m reservoir is usually unstisfactory and low-accuary. For this, we propose a noval method by using the full-bandwidth depth-domain waveform inversion to detect the underground untra-thin reservoirs. Based on the wide-bandwidth siemisc reflection data, the proposed method applies the Markvo Chian Monto Carlo simulation algorithm retrieved from the seismic waveform indication and facies-control theory to enhance both the accuracy and stability of the ultra-thin reservoir exploration by exploiting all the low, middle, and high frequency components of seismic reflection data. We conclude that, the proposed method can be an effective measure for identifying the ultra-thin reservoirs in field applcaiton.
会议名称:

SPG/SEG南京2020年国际地球物理会议

会议时间:

2020-09-14

会议地点:

中国江苏南京

  • 专辑:

    基础科学; 工程科技Ⅰ辑

  • 专题:

    地质学; 地质学; 地球物理学; 石油天然气工业; 矿业工程

  • DOI:

    10.26914/c.cnkihy.2020.016107

  • 分类号:

    P631.4;P618.13

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