In this paper, on the basis of the theory of the formation pressure prediction, the drilling complex and accidents were analyzed by the generalized stress--strength interference theory , and the risk probability and its vulnerable sections were determined.
According to the generalized stress-strength interference theory, the drilling risk modes are as follows:
On the basis of the analysis of the drilling risk mode, the formation pressure and the drilling fluid density, by the generalized stress-strength interference theory, the drilling risks probability calculation formula are as shown in Table 3.
1] The interference theory refers to competition between early and later memories, with the later learning obscured by earlier learning.
Although researchers found that sleep after learning positively influenced memory the interference theory was disputed.