Patent ID: 9541672
Date: 2017-01-10
CPC Classifications: G01V

Claim:
1. A method of characterizing a parameter relating to at least one fluid in a formation intersected by a borehole, the method comprising: taking a first gravity measurement in the borehole using a first gravimeter, the borehole containing a first reference feature; after taking the first gravity measurement, removing the first gravimeter and the first reference feature from the borehole; after removing the first gravimeter and the first reference feature from the borehole, positioning a second reference feature and a second gravimeter in the borehole; taking a second gravity measurement using the second gravimeter; estimating a difference in position between a position of the first reference feature during the first gravity measurement and a position of the second reference feature during the second gravity measurement using the first gravity measurement and the second gravity measurement; adjusting at least one additional gravimeter measurement in the borehole using to compensate for the estimated difference; and using the adjusted at least one additional gravimeter measurement to characterize the parameter.