利用阵列声波测井资料预测静态压裂参数

摘要

Proposed is a method to calculate rock static elastic modulus and predict rock fracturing parameters by combining with core experimental data and log data. The slowness of formation P-wave and S-wave is extracted from the multipole array acoustic log data. Relation between dynamic and static elastic modulus is established through regression of laboratory measured rock static modules and calculating results, and then, we can get the static elastic modulus. It can help make fracturing operation scheme for pay zones. It is considered that field operating fracturing curves is unreliable, only the downhole pressure gauge measured curves can accurately reflect the pay zone fracturing situation. Three wells practical applications show that this method is reliable and accurate.%提出了一种通过岩心实验数据与测井数据相结合进行岩石静态弹性模量计算和压裂参数预测的方法.利用阵列声波测井资料提取地层的纵波、横波慢度,结合体积密度测井资料计算岩石动态弹性模量和压裂参数.计算的结果与实验室测定的岩样的静态参数进行回归拟合,从而建立动静态弹性力学参数之间的关系式,计算出静态的压裂参数,为制定油气层的压裂施工方案提供参考依据；提出现场压裂施工曲线数值不能检验阵列声波测井压裂预测结果,井下压力计曲线才能准确反映井下地层压裂结果.3口井的实际应用表明,该方法准确可靠.