Gravity from exploration to field management

Gravity surveys are well known for the exploration of frontier basins and understanding of the crustal structures.  Recent advances in gravity instrumentation along with processing and interpretation techniques have significantly improved the accuracy of the gravity surveys. The increased accuracy of the gravity measurements has led to Time Lapse gravity (also known as 4D gravity) monitoring of the Oil/Gas fields, where repeatability of the various gravity surveys at different time intervals are crucial.

Plan is to showcase two examples, one related optimum gridding of land 2-D gravity survey based on the scaling concept from Vindhayan basin of India and another where gravity is efficiently used in a very cost effective way for the field management based on repeated gravity measurements at seafloor (Time Lapse gravity) for subsidence and fluid movement monitoring in North sea.