Technical Paper: Regional Trends in Undercompaction and Overpressure in the Gulf of Mexico

Society: SEG
Paper Number: 2147903
Presentation Date: 2005


Shallow water flow and overpressure, arising primarily from rapid sedimentation rates generated by the Mississippi River depocenter, represent major drilling hazards in the deepwater Gulf of Mexico. In this paper, checkshots released by the Minerals Management Service (MMS) for the Gulf of Mexico are inverted for velocity versus depth below mudline, then kriged to populate a 3D Mechanical Earth Model (MEM) with both velocity and expected uncertainty. The 3D velocity cube thus obtained is used to infer regional variations in overpressure and undercompaction of shallow sediments.