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基于测井-地震多属性分析的储层预测方法及应用
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摘要
快速准确评价新的油藏并使其投入开发,是油田勘探开发的重要环节,储层预测技术是油藏评价的关键技术。本论文研究的意义在于,跟踪国内外测井与地震属性分析先进技术,探讨储层预测研究方法,建立快速有效的储层预测流程并能很好地应用于实际的油藏评价与预测工作。
    本论文的研究思路是,首先通过阅读大量的文献资料,基本掌握国内外同行业技术领域的研究与应用现状以及发展趋势;其次,按照方法学原理,初步形成储层预测方法学技术思路,运用地震多属性分析技术手段,建立合理的储层预测方法流程;同时在研究过程中结合实际工区资料建立合理的解释模型,最后用实际工区数据资料来检验流程的合理性、模型的适应性,并通过实际工区资料的处理使储层预测方法得到进一步优化。
    本研究所选择的研究工区是大庆油田西南部王府构造的临江地区,通过实际的测井与地震资料的处理,新的解释模型得到了有效应用,新建立的储层预测方法流程得到了有效检验。本文的创新性研究成果表现在:
    (1)首次将预测学、方法学理论引入油气储层预测领域,提出了导致储层预测失利的六大误区,为后续储层预测方法学的进一步研究、应用奠定了基础;
    (2)根据方法学原理,提出了以基础资料分析为基础,层序地层学、沉积学、石油地质等理论为指导,定性—定量储层预测技术为手段,岩性、物性、含油气性预测为目的的一整套优化的、多学科协同工作的测井—地震多属性分析储层综合预测方法,即提高预测可信度和精度的“五阶段”储层预测新方法;
    (3)针对低孔、低渗复杂油气藏,在常规的测井解释经验模型的基础上,建立了适合复杂沙泥岩油气藏的三孔隙度测井属性解释模型。对于提高储层预测精度和可靠程度,具有重要的作用;
Fast and accurate evaluating the new reservoir and putting it into development is an important segment in oilfield exploration and development, and reservoirprediction technology is a key of reservoir evaluation. The meaning of thisdissertation lies in, tracing the advanced technology in well logging and seismic multi-attribute analysis at home and abroad, investigating the reservoir prediction methods, establishing the fast and effective reservoir prediction technical process andputting it into the reservoir evaluation and prediction work very well.
    The study thought of this dissertation is follows, firstly, grasping the present status and developing trend of the study and application of this technology at home and abroad, secondly, in accordance with the methodology theory, forming the reservoir prediction technical thought basically, using seismic multi-attribute technical methods, establish the reasonable reservoir prediction technical process; in the samewhile, set up the rational interpretation model by combining the actual field data during the studying course, finally, verify the rationality of the technical process and the adaptability of the model with the real field data information, and optimize thereservoir prediction method by processing the real field data.
    After more than one year’s study, the analysis on a mount of documents about well logging, seismic multi-attribute and reservoir evaluation, etc, have been finished, proposed the primary concept and technical thought of reservoir prediction methodology, determined the critical technology and analysis method of reservoirprediction by combining organically with major discipline such as seismic and well logging: taking core analysis technology as the foundation, carry out the accurate well logging interpretation, determine the primary parameters and geology rules for reservoir study, then, extract the seismic attribution, predict the lithologic characters, petrophysical properties and oil or gas-bearing prediction by using the technologies including linear and nonlinear inversion, frequency division technology, AVOtechnology, multi-attribute analysis. Under the guide of methodology, we haveestablished well logging interpretation models, traced the most innovated seismic attribution analysis technology in the world, and set up the multi-discipline syntheticreservoir prediction technical process on the basis of well logging—seismic multi-attribute analysis.
    The target industrial district selected by this study is the Linjiang Area of Wangfu Structure in the southwest of Daqing Oilfield, by practically processing the well logging and seismic data, the new interpretation model was put into effectiveapplication, and the newly established reservoir prediction technical process was verified effectively.
    The innovative points of this dissertation are as follows:
    1 Introduced the basic concept about the methodology of reservoir prediction;
    2 Primarily established technical thought and working process of reservoirprediction method on the basis of well logging--seismic data processing and interpretation, i.e.: a new method of “five stage ”reservoir prediction in which the credible and accuracy of prediction was promoted.
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