摘要
以鄂尔多斯盆地某采油区延长组的长6油层组为例,利用测井资料开展地质建模、三维岩石力学场和三维应力场研究,获得井筒以外空间任一点与压裂密切相关参数的非均质网格节点数值模型。依据岩石破裂准则定量模拟计算出压裂缝的实际展布形态,建立非对称裂缝空间分布模型,包括缝高、缝长、缝宽和裂缝的走向。结合生产动态资料,开展剩余油分布研究,提出单井重复压裂措施方案。经过现场实施,日增产原油4吨左右,效果显著。
Based on Chang-6 formation of Yanchang group in Erdos basin, built the geology, 3D rock mechanics and 3D stress field models with core and logging data, and obtained the properties of any point between wellbores. With the fracturing principle, the actual geometry of the fractures can be calculated, and the asymmetry fractures model can be built, including the length, height, width and the direction of the fractures. With the analysis of production history, the residual oil distribution can be obtained, and the multiple fracturing procedure can be designed. With the guidance of the asymmetric fracture models, the daily increase of production is more than 4 ton.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第6期895-901,共7页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家重点基础研究发展计划(2009CB219300)资助
关键词
水力压裂
全缝长数值模拟
超低渗透
鄂尔多斯盆地
hydraulic fracturing
full-length
numerical simulation
ultra-low permeability
Erdos basin
