断层相关裂缝损伤刻画及在油气高产中的应用
发布时间：2018-08-30 17:49
【摘要】：关于断层相关裂缝的研究工作,目前国内外相关领域在对断层相关裂缝的特征及分布规律方面开展了大量的描述和统计工作,并取得了一些经验性的认识,但是仍然存在诸多问题,断层相关裂缝在油气高产中的应用目前仍是一个难点。在断层发展演化过程中总是伴随着附近相关裂缝的形成和演化,由于地层岩石材料的复杂性,模拟地层岩石断裂试验存在诸多困难:目前天然裂缝的模拟产生主要采用“高温加热、自然冷却”的方法在试件中随机产生裂缝,难以预制裂纹;裂纹长度和分布密度难以测量。因此无法照搬金属试件的测试规范研究断层相关裂缝,须采用新方法。本文通过多组构造物理模拟实验、结合粒子成像测速技术等手段,从损伤力学的角度定义断层相关裂缝的损伤变量(M),计算模拟各阶段断层相关裂缝损伤场,基于损伤变量研究断层相关裂缝的分布规律,分析断距大小、断层演化规模、断层部位等对断层相关裂缝的控制作用,得到断层相关裂缝的分布发育模式。结合泾河17井区长8段油藏天然裂缝的特征及成因,用损伤变量表征其天然裂缝的分布规律、划分断层附近损伤场,评价天然裂缝分布预测结果。通过损伤分布对油气产量的控制规律和油气高产富集区的预测,研究断层相关裂缝损伤刻画及其在油气高产中的应用,确定其在实例泾河17井区长8油藏断层附近损伤分布和油气高产中的应用效果。主要解决了断层相关裂缝的精细刻画;通过对断层相关裂缝形成的力学机理的研究着重解决断层相关裂缝的起裂与演化的控制机理;利用“损伤场”的概念预测了断层相关裂缝的发育区,为其形成演化和分布预测提供一定的理论基础;解决主要受与断层相关裂缝控制的油气藏的勘探方向问题,以及油气高产控制作用问题;在断层相关裂缝机理认识、研究方法方面有新的进展和突破;能够对断层相关的裂缝性油气藏的勘探和高效开发工作提供一定的借鉴意义。
[Abstract]:About the research work of fault related fractures, at present, a large number of description and statistics work have been carried out on the characteristics and distribution rules of fault related fractures in the relevant fields at home and abroad, and some experiential understandings have been obtained. However, there are still many problems. The application of fault-related fractures in oil-gas production is still a difficult point. In the process of fault development and evolution, the formation and evolution of related fractures in the vicinity are always accompanied by the complexity of strata and rock materials. There are many difficulties in simulating rock fracture test: at present, the method of "high temperature heating, natural cooling" is mainly used to simulate the formation of natural cracks in the samples, so it is difficult to preform cracks; Crack length and distribution density are difficult to measure. Therefore, a new method should be adopted to study the fault-related cracks, which can not be copied from the test code of the metal specimen. In this paper, by means of multi-group structural physical simulation experiments and particle imaging velocimetry, the damage variables of fault related cracks are defined from the point of view of damage mechanics, and the damage field of each stage of fault-related fractures is calculated and simulated by (M),. Based on the damage variables, the distribution law of fault related fractures is studied, and the distribution and development pattern of fault related fractures is obtained by analyzing the controlling effect of fault distance size, fault evolution scale and fault location on fault related fractures. Combined with the characteristics and causes of natural fractures in Chang 8 member reservoir of Jinghe well 17, the distribution of natural fractures is characterized by damage variables, the damage field near faults is divided, and the prediction results of distribution of natural fractures are evaluated. Based on the control law of damage distribution on oil and gas production and the prediction of oil and gas rich areas, the damage characterization of fault related fractures and its application in high oil and gas production are studied. Its application effect in fault distribution and high oil and gas production of Chang8 reservoir in Jinghe well 17 is determined. The fine characterization of fault related fractures is mainly solved, and the control mechanism of the initiation and evolution of fault related fractures is mainly solved by studying the mechanical mechanism of the formation of fault related fractures. By using the concept of "damage field", the authors predict the development area of fault-related fractures, provide a theoretical basis for their formation, evolution and distribution prediction, and solve the problem of exploration direction of oil and gas reservoirs mainly controlled by fault-related fractures. And the problem of controlling high oil and gas production; understanding of fault related fracture mechanism and research methods have new progress and breakthrough; it can provide some reference for the exploration and high efficiency development of fault-related fractured oil and gas reservoirs.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TE31
[Abstract]:About the research work of fault related fractures, at present, a large number of description and statistics work have been carried out on the characteristics and distribution rules of fault related fractures in the relevant fields at home and abroad, and some experiential understandings have been obtained. However, there are still many problems. The application of fault-related fractures in oil-gas production is still a difficult point. In the process of fault development and evolution, the formation and evolution of related fractures in the vicinity are always accompanied by the complexity of strata and rock materials. There are many difficulties in simulating rock fracture test: at present, the method of "high temperature heating, natural cooling" is mainly used to simulate the formation of natural cracks in the samples, so it is difficult to preform cracks; Crack length and distribution density are difficult to measure. Therefore, a new method should be adopted to study the fault-related cracks, which can not be copied from the test code of the metal specimen. In this paper, by means of multi-group structural physical simulation experiments and particle imaging velocimetry, the damage variables of fault related cracks are defined from the point of view of damage mechanics, and the damage field of each stage of fault-related fractures is calculated and simulated by (M),. Based on the damage variables, the distribution law of fault related fractures is studied, and the distribution and development pattern of fault related fractures is obtained by analyzing the controlling effect of fault distance size, fault evolution scale and fault location on fault related fractures. Combined with the characteristics and causes of natural fractures in Chang 8 member reservoir of Jinghe well 17, the distribution of natural fractures is characterized by damage variables, the damage field near faults is divided, and the prediction results of distribution of natural fractures are evaluated. Based on the control law of damage distribution on oil and gas production and the prediction of oil and gas rich areas, the damage characterization of fault related fractures and its application in high oil and gas production are studied. Its application effect in fault distribution and high oil and gas production of Chang8 reservoir in Jinghe well 17 is determined. The fine characterization of fault related fractures is mainly solved, and the control mechanism of the initiation and evolution of fault related fractures is mainly solved by studying the mechanical mechanism of the formation of fault related fractures. By using the concept of "damage field", the authors predict the development area of fault-related fractures, provide a theoretical basis for their formation, evolution and distribution prediction, and solve the problem of exploration direction of oil and gas reservoirs mainly controlled by fault-related fractures. And the problem of controlling high oil and gas production; understanding of fault related fracture mechanism and research methods have new progress and breakthrough; it can provide some reference for the exploration and high efficiency development of fault-related fractured oil and gas reservoirs.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TE31
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