摘要
针对胜坨油田高含水期出砂严重的实际情况,对该油田的储层砂岩进行了岩芯三轴抗压强度试验,获得了可靠的试验数据。通过对测井数据和岩芯试验数据分析比较,选择了几个与岩石三轴抗压强度密切相关的数据作变量,通过不断引入重要变量、检验旧变量和剔除不重要变量的方法,进行多元逐步回归分析,建立了岩石三轴抗压强度与井深、岩石密度、孔隙度、声波时差、杨氏模量等数据的回归关系式,用于现场计算地层岩石三轴抗压强度和指导防砂、压裂等油田开发措施的实施。
In order to deal with serious sanding problem in Shengtuo Oil Field in high water cut period,triaxial tests on the reservoir sandstone are carried out,and reliable data are gained. A few data closely related to the triaxial compression strength of the rock are selected as regression variables after well measurement data and core test data are analyzed and compared. The regression relation of compressive strength to well depth,rock density,porosity,interval transit time and Youngs modulus of the reservoir rock is established in the process of introducing new important variables,checking the old variables and eliminating the unimportant variables continually. The regression relation can be used to calculate the compressive strength of reservoir rock in site and guide the sand control or fracturing projects.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第14期2471-2475,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
石油工程
岩芯试验
多元回归
抗压强度
砂岩
petroleum engineering,core test,multivariable regression,compressive strength,sandstone
