CAJ | 학술논문

开发作业过程中，各种采油工程入井液进入油层后，由于入井液与油层固有的岩石和所含流体性质不配伍，或由于压差、温度等条件的改变，造成了对油气层的伤害。对采油工程入井液伤害油层的主要因素(矿化度、pH值、表面张力、固相颗粒尺寸、固相颗粒含量等)进行了试验研究；对现场采油工程入井液和室内配制的低伤害入井液的综合伤害率进行了评价，得到了各种因素对地层损害的影响规律，提出了避免或减轻入井液伤害储层的对策。
개발작업과정중，각충채유공정입정액진입유층후，유우입정액여유층고유적암석화소함류체성질불배오，혹유우압차、온도등조건적개변，조성료대유기층적상해。대채유공정입정액상해유층적주요인소(광화도、pH치、표면장력、고상과립척촌、고상과립함량등)진행료시험연구；대현장채유공정입정액화실내배제적저상해입정액적종합상해솔진행료평개，득도료각충인소대지층손해적영향규률，제출료피면혹감경입정액상해저층적대책。
During oil recovery, such working fluids as killingfluid, flushing fluid, fracturing fluid and perforationfluid, etc. , enter into oil reservoir and cause forma-tion damage, because of the incompatibility with for-mation fluids or changes of pressure and temperature.This paper discusses the main factors of formationdamage caused by oil recovery working fluids, such assalinity, pH value, surface tension, solid size andsolids content, etc. The influencing tendency is ob-tained by evaluating the field fluids sample and lab-made sample, and a proposal of minimizing this kind of formation damage is presented.