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Fractured reservoir modeling by discrete fracture network and seismic modeling in the Tarim Basin,china

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Petroleum Science 2011年第4期8卷 433-445页

作者： Sam Zandong Sun Zhou Xinyuan Yang Haijun Wang Yueying WangDi Liu Zhishui Laboratory for Integration of Geology ＆ Geophysics China University of Petroleum Beijing 102249 China Research Institute of Exploration ＆ Development PetroChina Tarim Oilfield Company Korla 841000 China

Fractured reservoirs are an important target for oil and gas exploration in the Tarim Basin and the prediction of this type of reservoir is *** to the complicated fracture system in the Tarim Basin,the conventional AVO inversion method based on HTI theory to predict fracture development will result in some ***,an integrated research concept for fractured reservoir prediction is put forward in this *** modeling plays a bridging role in this concept,and the establishment of an anisotropic fracture model by Discrete Fracture Network （DFN） is the key *** the fracture system in the Tarim Basin shows complex anisotropic characteristics,it is vital to build an effective anisotropic *** on geological,well logging and seismic data,an effective anisotropic model of complex fracture systems can be set up with the DFN *** effective elastic coefficients,and the input data for seismic modeling can be *** seismic modeling based on this model is performed,and the seismic response characteristics are *** modeling results can be used in the following AVO inversion for fracture detection.

关键词： Fractured reservoir Discrete Fracture Network (DFN) equivalent medium seismic modeling azimuth-angle gathers

煤层气直井开发概要——以鄂尔多斯盆地韩城地区煤层气开发为例

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天然气工业 2011年第12期31卷 66-71,128页

作者：李景明巢海燕聂志宏中石油煤层气有限责任公司中联煤层气国家工程中心有限责任公司

煤层气钻井方式中,直井技术(包括丛式井)最为成熟,费用较低,操作简单,没有太大的使用限制,无论在前期开发评价,还是后期的增产改造和规模开发中,其作用都不可替代,是国内煤层气开发普遍采用的方式。为此,论述了其开发要点:①煤层气的选... 详细信息

煤层气钻井方式中,直井技术(包括丛式井)最为成熟,费用较低,操作简单,没有太大的使用限制,无论在前期开发评价,还是后期的增产改造和规模开发中,其作用都不可替代,是国内煤层气开发普遍采用的方式。为此,论述了其开发要点:①煤层气的选区、选井及选层主要依靠地震勘探技术结合基础地质技术完成;②单井评价通常以测井评价为主,录井技术和试井技术为辅,而测井记录的数据常需使用经过选择的煤心和试井数据标定,这样才能提高储层评价参数及单井评价的可靠性,进而确定射孔压裂层段;③直井的增产改造方法除水力压裂外,还可考虑裸眼完井和筛管完井技术,裸眼完井需考虑煤层适应性,而筛管完井除了应用于水平井外,也可以用于裸眼完井的直井中;④煤层气排采需紧密结合排采装备,初期以最小的强度稳定缓慢排采,然后根据地层实际供液能力调整工作制度,尽量使地层供液与排液量保持一致,稳定持续缓慢降液,尽可能地扩大压降范围。

关键词：煤层气直井开发布井地质录井裸眼完井筛管完井增产改造排水采气

Seismic attributes and integrated prediction of fractured and caved carbonate reservoirs in the Tarim Basin,china

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Petroleum Science 2011年第4期8卷 455-461页

作者： Liu Lifeng Sam Zandong Sun Yang Haijun Han Jianfa Gao Hongliang Jing Bing Zhu Xinghui Laboratory for Integration of Geology ＆ Geophysics China University of Petroleum Beijing 102249 China Research Institute of Exploration ＆ Development PetroChina Tarim Oilfield Company Korla 841000 China

The carbonate reservoirs in the Tarim Basin are characterized by anisotropy and strong *** with an integrated analysis of data from seismic,geology,and drilling results,a series of attributes which are suitable for fractured and caved carbonate reservoir prediction is discussed,including amplitude,coherence analysis,spectra decomposition,seismic absorption attenuation analysis and impedance ***,3-D optimization of these attributes is achieved by integration of multivariate discriminant analysis and principle component analysis,where the logging data are taken as training *** the optimized results,the spatial distribution and configuration features of the caved reservoirs can be characterized in *** technique not only improves the understanding of the spatial distribution of current reservoirs but also provides a significant basis for the discovery and production of carbonate reservoirs in the Tarim Basin.

关键词： coherence analysis spectra decomposition seismic absorption and attenuation impedance inversion seismic attribute optimization

Pre-stack inversion for caved carbonate reservoir prediction:A case study from Tarim Basin,china

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Petroleum Science 2011年第4期8卷 415-421页

作者： Zhang Yuanyin Sam Zandong Sun Yang Haijun Wang Haiyang HanJianfa Gao Hongliang Luo Chunshu Jing Bing Laboratory for Integration of Geology ＆ Geophysics China University of Petroleum Beijing 102249 China Research Institute of Exploration ＆ Development PetroChina Tarim Oilfield Company Korla 841000 China

The major storage space types in the carbonate reservoir in the Ordovician in the TZ45 area are secondary dissolution *** the prediction of caved carbonate reservoir,post-stack methods are commonly used in the oilfield at present since pre-stack inversion is always limited by poor seismic data quality and insufficient logging *** this paper,based on amplitude preserved seismic data processing and rock-physics analysis,pre-stack inversion is employed to predict the caved carbonate reservoir in TZ45 area by seriously controlling the quality of inversion *** procedures mainly include angle-gather conversion,partial stack,wavelet estimation,low-frequency model building and inversion residual *** amplitude-preserved data processing method can achieve high quality data based on the principle that they are very consistent with the ***,the foundation of pre-stack inversion and reservoir prediction criterion can be established by the connection between reservoir property and seismic reflection through rock-physics ***,the inversion result is consistent with drilling wells in most *** is concluded that integrated with amplitude-preserved processing and rock-physics,pre-stack inversion can be effectively applied in the caved carbonate reservoir prediction.

关键词： Carbonate reservoir prediction pre-stack inversion amplitude-preserved processing rock physics