2.7. New Technologies for Offshore Drilling in China

2.7.1. Optimized Drilling Technology in the Bohai Sea in China

There are marginal oil fields in the Bohai Sea of China, and it is predicted that the proven reserves of marginal oil fields is about 5×108 t. Among the factors constraining the costs of a marginal oil field, drilling cost is the most important factor besides the reasons related to development programs. The cost of drilling and completion takes up about half of oilfield development funds. Therefore, in order to develop a marginal oilfield effectively, work in the Bohai Sea has been looking to increase drilling speed, reduce drilling cost, and optimizing drilling technology. Due to significant efforts in recent years, there have been ...

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