水平井产能与人工裂缝参数相关性模拟实验

于雷 车飞 许磊明 杨焕英 平义

中国石油长庆油田公司勘探开发研究院，陕西 西安 710018

Research Institute of Exploration and Development, Changqing Oilfield Company, PetroChina, Xi′an 710018, China

水平井与体积压裂技术相结合是目前致密油藏规模有效开发的重要手段，但是压裂水平井由于受到裂缝参数和储层特征等多因素的耦合影响，传统的单一因素分析，难以定量描述不同裂缝参数对产能影响的主次顺序和显著程度。文中应用相似原理，通过水￣电模拟实验对水平井压裂裂缝类型及规模进行分析，明确了裂缝特征与油井产能的关系；并对影响油井产能的裂缝形态、长度、密度等因素进行了定量描述。结果表明，矩形压裂缝能更大程度提高单井产量，裂缝长度、密度与水平井产量呈正相关关系。这对于目前正处于试验阶段的致密油藏水平井开发具有一定的指导意义。

The combination of horizontal well with volume fracturing technology is an important method to effectively develop tight oil reservoir. But because the fracturing horizontal well is affected by many factors such as fracture parameters and reservoir characteristics, the traditional single?鄄factor analysis is difficult to quantitatively describe the primary and secondary order and significant extent affecting productivity by different fracture parameters. In this paper, a similar theory is used. Through a series of simulation experiments, the fracture type and size of fracturing horizontal well are analyzed to determine the relationship between the fracture characteristics and oil well productivity. The fracture morphology, length, density and other factors affecting the oil well productivity are quantitatively analyzed. The results show rectangular fractures can improve the single well production, and fracture length and density are positively related with horizontal well production, which has a certain guiding and practical significance for the horizontal well development of tight reservoir in the experimental stage at present.

10.6056/dkyqt201502019