尼日尔三角洲Buma油田储层地震测井特征研究

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引用次数: 1

摘要

利用地震和测井资料对尼日尔三角洲Buma油田储层进行表征是本研究的重点。SEG-Y格式的地震数据和测井套件已被用于实现研究的目的和目标。在这项工作中使用的方法是在这类研究中使用的标准方法。地震资料分析结果表明,共发现断层15条,其中9条为北西-东向反断层,6条为NESW向合成断层。这些断层形成了闭包,可以在已确定的层位/储层中作为油气的圈闭机制。通过地震和测井分析,确定了D层和F层两个含油气层,砂岩和页岩为主要岩性。井间对比显示出岩性、储层顶部和岩石物性等地质性质的相似性。对两个储层进行的体积估算表明,D储层的平均厚度为26.73 ft,面积为3784.89 acres,体积为4407 × 106 ft3,净体积为4226 × 106 ft3,孔隙体积为216 × 106 RB,油气孔隙体积(油)为143 × 106 RB, STOIIP为77 MMSTB。F储层平均厚度为41.55 ft,面积为2790.63 acre,体积为5051 × 106 ft3,净体积为4769 × 10106 ft3,孔隙体积为248 × 10106 RB,油气孔隙体积(油)为167 × 10106 RB, STOIIP为88 MMSTB。综合构造解释、测井分析、岩石物性和体积估算结果表明,这两个储层都具有很好的孔隙度和渗透率,产砂厚度好,含水饱和度低,有利于油气孔隙流体的储存和易流动。因此,布马油田D、F两个储层含烃孔隙流体(油)丰富,可经济开发
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reservoir Characterization of Buma Field Reservoirs, Niger Delta using Seismic and Well Log Data
The reservoir characterization of Buma Field, Niger Delta using seismic and well log data is the focus of this research. Seismic data in SEG-Y format and suites of well logs have been used to achieve the aim and objectives of the research. Methodologies used in this work are standard methods used in this kind of research. Results of the analysis seismic data shows fifteen faults have been identified, nine trend NW-SE and are antithetic faults whereas the six trend NESW and are synthetic faults. These faults formed closures and could act as trapping mechanisms for hydrocarbon in the identified horizons/reservoirs. Two hydrocarbon bearing horizons D and F have been mapped on the seismic and analysis of the well logs showed that sand and shale are major lithologies in the studied wells. Well correlation showed similarities in geological properties such as lithology, reservoir tops and petrophysical properties. Volumetric estimation carried out on the two reservoirs showed Reservoir D having average thickness of 26.73 ft., area of 3784.89 acres, bulk volume of 4407x106 ft3 , net volume of 4226x106 ft3 , pore volume of 216 x106 RB, hydrocarbon pore volume (oil) of 143x106 RB and STOIIP of 77 MMSTB. Reservoir F has an average thickness of 41.55 ft., area of 2790.63 acres, bulk volume of 5051x106 ft3, net volume of 4769x10106 ft3 , pore volume of 248x10106 RB, hydrocarbon pore volume (oil) of 167x10106 RB and STOIIP of 88 MMSTB. Integrating results of structural interpretation, well log analysis, petrophysical properties and volumetric estimation it is evident that both reservoirs have very good porosities and excellent permeability, good thicknesses of productive sand and reduced water saturation as to aid storage and easy flow of hydrocarbon pore fluids. Therefore, the two Buma Field Reservoirs D and F are prolific with hydrocarbon pore fluids (oil) which can be exploited economically
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