CAJ | 학술논문

陈堡油田已经注水开发多年,油层水淹比较严重.从2009年起,采用俄罗斯ECOS–31–7型过套管电阻率测井技术测量了部分生产井.通过对比这两类测井曲线发现,过套管电阻率和裸眼电阻率曲线之间变化趋势基本一致,但是二者存在幅度差,并且水淹越严重,幅度差越明显.通过对陈堡油田ECOS测井资料的处理解释,提出了利用电阻率相对变化率这个参数来评价油层水淹的程度,结合各小层相应的生产数据,并根据过套管电阻率相对变化率有效地划分了油层水淹的级别.最后,分析了ECOS–31–7型过套管电阻率仪器在陈堡油田评价水淹层和剩余油的适应性.
진보유전이경주수개발다년,유층수엄비교엄중.종2009년기,채용아라사ECOS–31–7형과투관전조솔측정기술측량료부분생산정.통과대비저량류측정곡선발현,과투관전조솔화라안전조솔곡선지간변화추세기본일치,단시이자존재폭도차,병차수엄월엄중,폭도차월명현.통과대진보유전ECOS측정자료적처리해석,제출료이용전조솔상대변화솔저개삼수래평개유층수엄적정도,결합각소층상응적생산수거,병근거과투관전조솔상대변화솔유효지화분료유층수엄적급별.최후,분석료ECOS–31–7형과투관전조솔의기재진보유전평개수엄층화잉여유적괄응성.
Casing hole formation resistivity logging has been paid more and more attention to in recent years,and ECOS technology of Russia have been applied in some oilfields of China,and Chenbao Region,Jiangsu Oilfield,is one of those. Insofar at present,the critical task is to locate the residual oil zones and to evaluate the flooding grade of oil-bearing formation. Through comparison between ECOS-resistivity and conventional resistivity,we discover that the two kinds of resistivity have roughly similar trend. However,there are relatively obvious amplitude differences between them,and usually,the latter is larger than the former. The law is the more serious flooding,the larger amplitude difference. So this paper provides a novel method,which is the relative resistivity change rate(IR),to evaluate the flooding grade. Through two cases,this method is proved available. Finally,we conclude that the ECOS technology is suitable for Chenbao Oilfield.