直推存储式测井在富满油田超深地层中的应用优势及改进措施

Application Advantages and Improvement Measures of Direct Push Storage Logging in Ultra-Deep Formations in Fuman Oilfield

富满油田碳酸盐岩油藏埋深超过7500 m,储层温度可达160℃以上且油气显示活跃,测井风险极高,常规测井不能满足作业需求。直推存储式测井仪器最大抗拉、抗压强度分别为30 t、20 t,200℃高温环境下最长工作时间达50 h,在富满油田超深地层已累计完成测井作业50余井次。与钻具传输测井、泵出存储式测井、随钻测井相比,直推存储式测井在富满油田超深地层适用性更强,可较好满足储层评价需求。对于施工过程中出现的XMAC-F1仪器皮囊易破损、综合仪负荷大易造成元器件过载、SD卡存储故障、井径臂易折断等问题提出了针对性解决措施,改进后测井成功率可达90%。

The carbonate reservoir in Fuman Oilfield has a buried depth of more than 7500 m,the reservoir temperature can reach 160℃or more,and the oil and gas displays are active.Logging risks are extremely high.Conventional logging cannot meet operational requirements.The maximum tensile and compressive strength of the direct push storage logging tool are 30 t and 20 t respectively,and the longest working time is 50 hours under the high temperature environment of 200℃.The logging operations have been completed more than 50 times in the ultra-deep formation in Fuman Oilfield.Compared with drilling tool transmission logging,pump out storage logging and LWD logging,the direct push storage logging is more suitable for the ultra-deep formation in Fuman Oilfield,it can better meet reservoir evaluation needs.At the same time,targeted solutions are proposed to solve the problems of XMAC-F1 logging tool,such as skin bag fragile,heavy load of the comprehensive instrument leading to component overload,SD card storage failure,and caliper arm easy to break,etc.The logging success rate reaches 90%after improvement.