Following the general discussion of The Worldwide Occurrence of Abnormal Pressures Part I, Part II discusses some specific type Part I, Part II discusses some specific type examples in the United States, the North Sea, Africa and South East Asia.
The following examples are selected as the general type example for the area under discussion. In each case the general trend of the pore pressure profile is plotted versus depth. pore pressure profile is plotted versus depth. Naturally, since each area is covered in a very general manner the type example is only a general example. When drilling, variations in the depositional pattern and in the position in a basin may cause an entirely different pressure profile. So these profiles are not to be profile. So these profiles are not to be considered as a drilling guide but rather as a general description of the conditions that have already been found in these areas.
In all of the examples given the general mechanism is compression of the shales with the formation of a cap structure. As a guide, the cap structure and the general lithology of the area is indicated in the text.