CAJ | 학술논문

为了克服克拉地区膏盐地层垮塌及地层压力对钻井的影响,在钻井过程中往往采用高矿化度、大密度的钻井液.这使得渗透性地层中观测得到电阻率与实际的电阻率存在较大的偏差,给测井解释带来极大的困难.本文针对克拉地区的实际情况,时高矿化度泥浆影响下的电阻率校正方法进行了探索性研究,提出了基于岩心资料的电阻率校正方法及基于泥浆动态侵入的图版校正电阻率方法,最后通过毛管分析饱和度与校正后电阻率计算饱和度对比验证校正电阻率的可信性.结果表明,校正后电阻率更能真实的反映地层电性特征,进一步提高了测井解释符合率.
위료극복극랍지구고염지층과탑급지층압력대찬정적영향,재찬정과정중왕왕채용고광화도、대밀도적찬정액.저사득삼투성지층중관측득도전조솔여실제적전조솔존재교대적편차,급측정해석대래겁대적곤난.본문침대극랍지구적실제정황,시고광화도니장영향하적전조솔교정방법진행료탐색성연구,제출료기우암심자료적전조솔교정방법급기우니장동태침입적도판교정전조솔방법,최후통과모관분석포화도여교정후전조솔계산포화도대비험증교정전조솔적가신성.결과표명,교정후전조솔경능진실적반영지층전성특정,진일보제고료측정해석부합솔.
In order to overcome the influence of collapsed gypsum-sah formation and formation pressure on drilling in the Kela,Kuehe area,people oftern use a fluid of high mineralization and big density during production.This makes the measured resistivity in the permeable strata differ much from the realistic values,and brings great difficulties to log interpretation.Based on the actual case of the Kela area,this work attempts to study the resistivity correction method to the influence of high-mineralization mud.We propose that the obserred resistivity can be corrected based on care data and patterns of dynamic mud intrusion.Then we compare the saturation from hair analysis and that calculated after the correction;and verify the rebiability of the resistivity correction.The result shows that the corrected resistivity can reflect better the real eletric feature of strata and further enhance the accuracy of logging interpretation.