探矿工程-岩土钻掘工程Issue(7)：36-38,3.
“等电位”钻进与“零电位”钻井液初探
Primary Study on Isoelectric Drilling Method and Zero Potential Drilling Fluid
摘要
Abstract
The concepts of isoelectric drilling method and zero potential drilling fluid are presented.By the concept of isoe-lectric drilling method, zeat potential on rock surface is zero, that is, in IEP state, both penetration rate and bit service life can be improved with consequent higher drilling efficiency.As for zero potential drilling fluid, that is changing currently used Na-bentonite with zeta(-40~-35 mv) potential into bentonite with zero potential(-5~+5 mv);changing“anion suspension system(ζpotential>-45 mv)”of the drilling fluid into“cationsuspension system( zeta potential close to zero potential)”and changing anionic treating agents, such as filtrate reducer and viscosifier, into cationic or nonionic ones to form the drilling fluid with the corresponding performance.Drilling experiment shows that drilling efficiency can be effectively improved by isoelectric drilling method and zero potential drilling fluid.Some understandings of the relevant research are put forward.关键词
“等电位”钻进/“零电位”钻井液/破岩效率Key words
isoelectric drilling/zero potential drilling fluid/rock breaking efficiency分类
天文与地球科学引用本文复制引用
苏宁..“等电位”钻进与“零电位”钻井液初探[J].探矿工程-岩土钻掘工程,2014,(7):36-38,3.
