Method For Predicting A Reservoir's Structure, Petrophysical Properties, And Associated Uncertainty In Front Of A Drill Bit

A computing system, comprising:

• one or more processors;
• and
• a memory system comprising one or more non-transitory computer-readable media storing instructions that, when executed by at least one of the one or more processors, cause the computing system to perform operations, the operations comprising:
• receiving seismic input data, wherein the seismic input data is captured before drilling begins, wherein the seismic input data is measured behind, on sides of, and in front of a drill bit, wherein the seismic input data comprises acoustic impedance measurements and/or seismic amplitude measurements, and wherein the seismic input data comprises spatial correlations between the acoustic impedance measurements behind the drill bit and the acoustic impedance measurements to the sides of and/or in front of the drill bit;
• receiving electrical input data, wherein the electrical input data is captured after drilling begins, wherein the electrical input data is measured behind the drill bit, wherein the electrical input data comprises logging-while-drilling (LWD) electrical property measurements including resistivity measurements, and wherein the electrical input data comprises spatial correlations between the resistivity measurements behind the drill bit and unknown resistivity measurements to the sides of and/or in front of the drill bit;
• determining cross-domain relationships between the seismic input data and the electrical input data;
• determining reservoir properties to the sides and/or in front of a trajectory of a well being drilled by the drill bit based upon the spatial correlations of the seismic input data, the spatial correlations of the electrical input data, and the cross-domain relationships;
• and
• generating a display that shows the trajectory extending through one or more transverse planes that represent the reservoir properties behind the drill bit and/or in front of the drill bit.

A non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a computing system, cause the computing system to perform operations, the operations comprising:

• receiving seismic input data, wherein the seismic input data is captured before drilling begins, wherein the seismic input data is measured behind, to the sides of, and in front of a drill bit, wherein the seismic input data comprises acoustic impedance measurements and seismic amplitude measurements, wherein the seismic input data comprises spatial correlations between the acoustic impedance measurements behind the drill bit and the acoustic impedance measurements to the sides of and/or in front of the drill bit;
• receiving electrical input data, wherein the electrical input data is captured while drilling, wherein the electrical input data is measured behind the drill bit, wherein the electrical input data comprises logging-while-drilling (LWD) electrical property measurements including resistivity measurements, wherein the electrical input data comprises spatial correlations between the resistivity measurements behind the drill bit and unknown resistivity measurements to the sides of and/or in front of the drill bit;
• determining cross-domain relationships between the seismic input data and the electrical input data, wherein the cross-domain relationships are determined using a multivariate stochastic model;
• determining reservoir properties to the sides and/or in front of a trajectory of a well being drilled by the drill bit based upon the spatial correlations of the seismic input data, the spatial correlations of the electrical input data, and the cross-domain relationships;
• and
• generating a display that shows the trajectory extending through one or more transverse planes that represent the reservoir properties behind the drill bit and/or in front of the drill bit.