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COSL develops logging-while-drilling system

14th October 2014

China Oilfield Services Limited (COSL) has succeeded in the first offshore beta operation of its self-developed logging-while-drilling (LWD) equipment, Drilog

COSL develops logging-while-drilling system
The successful development and launch of this new technology will help alleviate overdependence of COSL on its peers

Self-developed by COSL, the Drilog system, is a LWD technology with full intellectual property. The system can be plug onto the self-developed rotary steering system, the Welleader, to perform geo-steering functions. LWD is a high-end technology that has enjoyed rapid development in recent years, allowing contractors to grasp real-time positions and logging geo-data as necessary. These have significantly improved the accuracy and save time for drilling operations.

There are only a handful of international oilfield service companies in the world that are in possession of this technology. The successful development and launch of this new technology will help alleviate overdependence of COSL on its peers and provided a brand-new high-end platform for further research and development efforts on logging.

At the moment, COSL has successfully developed and produced six Drilog system engineering sample units, which have received valid approvals for all designed functions and performance indicators while the system continues to improve on stability. These have established a firm footing for offshore operation promotions in the future.

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