综合录井技术在川西地区钻探中的应用

APPLICATION OF COMPOUND LOGGING TECHNOLOGY IN EXPLORATIONS IN WEST SICHUAN BASIN

综合录井仪在提供地质参数的同时,对钻井施工过程中钻井液参数、工程参数信息的实时采集和快速数字化处理,直观地展现随钻过程中的钻井实况,起到了明显作用,这是在地质录井技术发展新的一方面。以川西地区天然气钻探中的川江566井为例,阐述该井应用综合录井技术在钻井过程中发现油气的情况,即经录井发现气测异常,并解释为气层的,经完井测试90%以上获得工业性天然气气流。

The compound logging can gather realtime drilling fluid parameters and engineering data meanwhile providing more geologic parameters during drilling, and fast speed digitalization is completed to display the real drilling status visually. This is not only a great step forward in geologic logging, but more importantly it provides large amount of realtime drilling fluid and engineering data which will be very helpful for increasing drilling speed. Gas Well CJ-566 drilled in West Sichuan basin is taken as an example in this article. The engineering accidents have been reduced on that well due to timely forecast of engineering abnormally and decisive measures taken correspondingly. And the abnormal gas detection has been interpreted as gas formations by compound logging technology from the oil indications during drilling, from 90% of which commercial gas stream has been proved to be obtained by completion tests.