喇嘛甸油田高渗透砂岩层钻井过程中井径异常扩大原因分析  

Analysis of the borehole diameter anomaly expanding in well drilling process of high permeability sandstone formation in Lamadian Oil Field

作　　者：施尚明[1] 李佳蕙[1] 王连生[2] 申家年[1] 

机构地区：[1]大庆石油学院地球科学学院,黑龙江大庆163318 [2]大庆钻探工程公司钻井二公司,黑龙江大庆163413

出　　处：《大庆石油学院学报》2009年第2期16-19,122,共4页Journal of Daqing Petroleum Institute

摘　　要：为解决喇嘛甸油田高渗透砂岩层井径异常扩大,根据喇嘛甸油田砂岩层高孔隙度高渗透率的特征,选取喇嘛甸油田1997～2006年具有代表性的3口井不同层位的20块岩心样品,进行岩石单轴抗压强度和剪切强度实验,分析新老井岩石力学参数中弹性模量、剪切模量和弹性强度的变化规律.利用X-射线衍射、扫描电镜等实验,分析与泥岩层地区不同的砂岩层岩石力学参数的主要影响因素,同时提出预防井径扩大的建议,为高渗透砂岩层井径异常扩大的预防提供指导.In order to solve the phenomenon of high permeability sandstone borehole diameter anomaly expanding in well drilling process in Lamadian Oil Field,in view of the Lamadian Oil Field sandstone's characteristic of high porosity and high permeability.Twenty rock cores of different position from 1997 to 2006 have been collected to carry on experiment of compressive resistance and shear intensity in Lamadian Oilfield.Through analysis of the rule of chang from the rock mechanics parameter such as elastic modeling quantity and modulus of shearing of the experiment measured.And using X beam diffraction and SEM discovery the primary factor which influence the sandstone level rock mechanics properties that differ from mudstone,and raise the proposal of preventing the borehole diameter anomaly expanding.Instruction the prevention of high permeability sandstone formation borehole diameter anomaly expanding.

关 键 词：喇嘛甸油田 岩石力学 井径扩大 注入水 黏土矿物 

分 类 号：TE28[石油与天然气工程—油气井工程]