干扰试井模型及试井分析方法研究

发布时间：2018-10-05 19:34

【摘要】：随着油气田的不断开发,地质情况、井网布置变得越来越复杂,为了确定井间的连通状况,求解储层参数,干扰试井分析方法的研究引起了国内外专家的重视。近年来随着水平井在油气田广泛应用,油气田布井也变得更加复杂,出现水平井与直井、水平井与水平井联合布井的井网,而国内外的干扰试井研究大多为直井与直井之间,关于水平井的多井干扰试井研究相对较少。针对这一问题,研究了水平井与直井、水平井与水平井联合布井的干扰试井理论基础和试井分析方法。按照不同布井方式及油气藏类型的特点,建立并求解了一系列水平井联合布井的干扰试井分析物理数学模型,绘制出各模型的理论样版曲线,并分析了各参数对干扰试井样版曲线的敏感性特征。研究的主要模型有：(1)直井干扰试井模型(均质油藏、双重介质油藏),着重分析了井筒储集系数、表皮系数、窜流系数、激动井与观察井的距离等参数对样版曲线的敏感性特征；(2)水平井与直井联合布井干扰试井模型(均质油藏、双重介质油藏),着重分析了激动井与观察井距离、窜流系数等参数对样版曲线的敏感性特征；(3)水平井与水平井干扰试井模型(均质油藏),着重分析了水平井堆栈方式对样版曲线的敏感性特征。在此基础上提出了相应的干扰试井解释方法,然后通过对4口典型实例井进行了试井解释,得到了较为准确可靠的解释结果,验证了模型的适用性。通过论文的研究,最后形成一套水平井与直井、水平井与水平井的不同布井方式的干扰试井解释方法,为现场实际应用和生产提供了技术理论支持。
[Abstract]:With the continuous development of oil and gas fields, the layout of well pattern becomes more and more complicated. In order to determine the connectivity between wells, solve reservoir parameters and interfere well test analysis methods, the research of well pattern arrangement has attracted the attention of experts at home and abroad. In recent years, with the wide application of horizontal wells in oil and gas fields, well distribution in oil and gas fields has become more and more complex. Horizontal wells and vertical wells, horizontal wells and horizontal wells combined to layout wells, and most of the interference well testing research at home and abroad is between straight wells and vertical wells. There is relatively little research on multi-well interference test for horizontal wells. In order to solve this problem, the interference well testing theory foundation and well test analysis method of horizontal well and vertical well, horizontal well and horizontal well are studied. According to the characteristics of different well layout modes and reservoir types, a series of physical mathematical models for interference well test analysis of horizontal wells combined with well layout are established and solved, and the theoretical sample curves of each model are drawn. The sensitivity of each parameter to interference well test curve is analyzed. The main models are as follows: (1) the interference well test model (homogeneous reservoir, dual medium reservoir), the well bore reservoir coefficient, skin coefficient, channeling coefficient are analyzed. The sensitivity of the parameters such as the distance between the excited well and the observation well to the pattern curve; (2) the interference test model of horizontal well and vertical well (homogeneous reservoir, dual medium reservoir), the distance between the excited well and the observation well is analyzed emphatically. (3) horizontal well and horizontal well interference well test model (homogeneous reservoir), the sensitivity of horizontal well stack mode to sample curve is analyzed emphatically. On this basis, the corresponding interference well test interpretation method is put forward, and then through the well test interpretation of 4 typical wells, the more accurate and reliable interpretation results are obtained, and the applicability of the model is verified. Through the research of the paper, a set of interference well test interpretation methods of horizontal well and vertical well, horizontal well and horizontal well layout are formed, which provides technical theoretical support for practical application and production in the field.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE353

【参考文献】