Optimized geosteering using real-time geological models

A non-transitory program carrier device tangibly carrying computer executable instructions for optimized geosteering using real time geological models, the instructions being executable to implement:

• a) creating a parameter matrix, which comprises a formation property for each pair of TVD coordinates from a geological model and MD coordinates from a predefined well trajectory;
• b) initializing the parameter matrix by initializing a value for each parameter entry in the parameter matrix;
• c) updating the initialized parameter matrix by replacing the TVD coordinates and the MD coordinates for each parameter entry in the parameter matrix with the TVD coordinates and the MD coordinates for an actual well trajectory;
• d) compiling a DTBB array and one or more other LWD arrays using corresponding measurements at the MD coordinates of the actual well trajectory;
• e) calculating a value for each parameter entry in the updated parameter matrix, which is a sum of a geology array, the DTBB array and the one or more other LWD arrays that are each multiplied by one of (i) respectively assigned weights when the TVD coordinates and the MD coordinates for each parameter entry in the updated parameter matrix are not located within stratigraphic boundaries of the DTBB array and the one or more other LWD arrays;
• and (ii) respectively calculated weights when the TVD coordinates and the MD coordinates for each parameter entry in the updated parameter matrix are located within the stratigraphic boundaries of the DTBB array and the one or more other LWD arrays;
• and
• f) updating the geological model in real time during drilling operations by replacing each initialized value for each parameter entry in the updated parameter matrix with the respective calculated value.

A non-transitory program carrier device tangibly carrying computer executable instructions for optimized geosteering using real time geological models, the instructions being executable to implement:

• a) creating a parameter matrix, which comprises a formation property for each pair of TVD coordinates from a geological model and MD coordinates from a predefined well trajectory;
• b) initializing the parameter matrix by initializing a value for each parameter entry in the parameter matrix;
• c) updating the initialized parameter matrix by replacing the TVD coordinates and the MD coordinates for each parameter entry in the parameter matrix with the TVD coordinates and the MD coordinates for an actual well trajectory;
• d) compiling a DTBB array and one or more other LWD arrays using corresponding measurements at the MD coordinates of the actual well trajectory;
• e) calculating a value for each parameter entry in the updated parameter matrix, which is a sum of a geology array, the DTBB array and the one or more other LWD arrays that are each multiplied by respective weights;
• f) updating the geological model in real time during drilling operations by replacing each initialized value for each parameter entry in the updated parameter matrix with the respective calculated value;
• g) adjusting the actual well trajectory during drilling operations based on the updated geological model;
• and
• h) repeating steps c)-g) until the drilling operations have reached a reservoir and the actual well trajectory is optimized.