E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
354/21, 166/3
E21B 47/00 (2006.01) G01V 11/00 (2006.01)
Patent
CA 1315191
ABSTRACT The present invention relates generally to a method and system for geophysical exploration and more particularly to a method and system for obtaining selected physical properties of the subterranean formations sur- rounding a wellbore and for obtaining inverse logs of the selected physical properties so as to aid the geophysicist in evaluating the oil and gas bearing potential of such formations. In one embodiment of the invention, contin- uous core samples are obtained from along the length of a wellbore. Discrete samples are obtained from the contin- uous core samples at selected intervals so as to be repre- sentative of the formation lithologies traversed by the wellbore along its length. The samples can then be proc- essed at the wellsite with a transportable laboratory so as to obtain measures of a plurality of selected physical properties of the subterranean formations representative of their in-situ condition. An inverse log of each phys- ical property as a function of depth can be prepared with which explorationists can evaluate geophysical survey data for oil and gas potential. In more detail, measures of the subterranean formation's compressional wave velocity, shear wave velocity, bulk density, saturated density, dry density, magnetic susceptibility and compressive strength can be determined from which one can also calculate the formation's acoustic impedance and porosity. Addi- tionally, inverse logs of one or more of the physical pro- perties can be used to perform basin analyses. When used for basin analysis, the physical properties of each inverse log can be used to calibrate geophysical survey data of the basin at one or more wellbore sites within the basin from which the inverse logs were obtained. Having thus calibrated the geophysical survey data, exploration- ists can then extrapolate the physical properties to other locations in the basin remote to the wellbore site with the geophysical survey data to evaluate the oil and gas potential of the earth's formations at such remote locations. 89179ART0098
606112
Rai Chandra Shekhar
Sondergeld Carl H.
Amoco Corporation
Gowling Lafleur Henderson Llp
LandOfFree
Method and system for geophysical exploration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for geophysical exploration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for geophysical exploration will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1292571