泥页岩水化应力实验方法与实验装置  

Methods and Apparatus for Shale Hydration Experiments

作　　者：徐加放[1] 邱正松[1] 韩丰欣 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营 [2]中海油监督监理技术公司,天津塘沽

出　　处：《钻井液与完井液》2008年第4期13-15,共3页Drilling Fluid & Completion Fluid

基　　金：山东省自然科学基金(Y2006F66)

摘　　要：分析了泥页岩水化应力产生机理及其影响因素,建立了泥页岩水化应力测试方法,并通过对原有实验仪器的改进,建立了泥页岩水化应力定量测定模拟实验装置,实现了泥页岩水化应力的定量测定。实验结果表明,提出的实验方法得当,使用的实验仪器平行性好,完全可以满足泥页岩水化应力的定量测定,为泥页岩水化应力定量测定和深入研究泥页岩井壁稳定机理提供了一种室内实验研究手段和方法。实验结果证明了水化应力的存在,其最大值出现在泥页岩与水作用一定时间后,为井壁周期性坍塌提供了解释依据。A test method for measuring shale hydration stress was constructed,and the test devices originally used were modified based on laboratory researches on the mechanism and influential factors of hydration stress.Using the method and the devices,shale hydration stress can be measured quantitatively.The test results showed very good repeatability and accuracy.It was concluded from the test results that the maximum hydration pressure appeared a certain period of time after the start of hydration,and this may explain the periodic sloughing of the water sensitive formations.

关 键 词：泥页岩 井壁稳定 实验方法 水化应力 实验装置 

分 类 号：TE283[石油与天然气工程—油气井工程]