The external non liner loading of wellcasing can be improved by changing elastic parameters of the cement mantle.
水泥环的弹性参数和泥岩含水量等对套管外载有一定影响。
2
Therefore, DGD may provide an alternative optimization method for deepwater wellcasing program design, which can produce remarkable economic and industrial values.
双梯度钻井为深水钻井井身结构设计提供了一种新的优化方法，具有显著的经济效益和工业实用价值。
3
And considering the features and particular requirements of deepwater drilling, a program for deepwater DGD wellcasing program design and optimization is developed.