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首页> 外文学位 >Reservoir estimation in the Penobscot 3D seismic volume using Constrained Sparse Spike Inversion, offshore Nova Scotia, Canada
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Reservoir estimation in the Penobscot 3D seismic volume using Constrained Sparse Spike Inversion, offshore Nova Scotia, Canada

机译：使用约束稀疏峰反演的Penobscot 3D地震体积中的储层估算，加拿大新斯科舍省近海

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摘要

The Penobscot study area is located offshore Nova Scotia, Canada. There are two wells, which penetrate the highest potentially commercial bodies in the Abenaki Formation. In order to investigate the potential for locating additional hydrocarbon reservoirs, well log data was used and the Penobscot 3D seismic dataset was analyzed using Constrained Sparse Spike Inversion. From the well log data, low GR and SP values are an indication of a permeable sand layer, which provides the target zone in this study. Impedance -- porosity crossplots gave the relationship between impedance and porosity, where a low impedance sand layer is correlated with high porosity. It was found that the target sand layer has low impedance, a feature recognizable from the inversion results. The porosity of the whole sand layer calculated by the linear function from the relationship between impedance and porosity. The calculation of thickness of this sand layer from maps representing different impedance intervals provided numeric evidence to show there is a low impedance sand layer in the well L-30. The pore thickness map results indicate there is greater pore thickness in well L-30 than B-41. It appears that the company drilled at the optimal location for the initial (L-30) well, and tested the extent of potential reservoir rock with the second (B-41) well. The potential reservoir is apparently fairly small, and restricted to the area around L-30. There may or may not be value in testing another location across a fault, but the rock behind the fault is likely not as high quality as at L-30 and the high-quality regions are small in size and not connected.
机译：Penobscot研究区位于加拿大新斯科舍省近海。有两口井，可渗透到Abenaki组中潜在的最高商业机构。为了调查寻找更多油气藏的潜力，使用了测井数据，并使用约束稀疏峰值反演分析了Penobscot 3D地震数据集。从测井数据来看，低的GR和SP值表示渗透砂层，这是本研究的目标带。阻抗-孔隙度交会图给出了阻抗与孔隙度之间的关系，其中低阻抗砂层与高孔隙度相关。发现目标砂层的阻抗较低，这是反演结果可识别的特征。根据阻抗与孔隙率之间的关系，通过线性函数计算出整个砂层的孔隙率。从代表不同阻抗区间的地图计算该砂层的厚度提供了数字证据，表明L-30井中存在低阻抗砂层。孔厚图结果表明，L-30井的孔隙厚度大于B-41。看来该公司在第一口（L-30）井的最佳位置进行了钻探，并用第二口（B-41）井测试了潜在的储层岩石范围。潜在的储层显然很小，并且被限制在L-30附近。测试跨断层的另一个位置可能有或没有价值，但是断层后面的岩石质量可能不如L-30高，并且高质量区域的尺寸很小并且没有连接。

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  • 作者

    Xiao, Mengchu.;

  • 作者单位

    Michigan Technological University.;

  • 授予单位 Michigan Technological University.;
  • 学科 Geophysics.
  • 学位 M.S.
  • 年度 2016
  • 页码 45 p.
  • 总页数 45
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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