Patent ID: 11867050
Assignee: MAGNETIC VARIATION SERVICES, LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 6:
7. A system for drilling, the system comprising:
a processor;
a memory coupled to the processor and to one or more control systems coupled to a drilling rig, wherein the memory comprises instructions executable by the processor for the following:
receiving a plurality of typelogs from a plurality of offset wells;
establishing a depth to stratigraphy mapping that correlates the typelogs from different offset wells with respect to a plurality of geological formations;
generating a statistical model of the typelogs as being conditional on the plurality of geological formations;
applying a penalization method to the statistical model of the typelogs using a prior distribution to model the depth to stratigraphy mapping;
estimating an alignment function using a maximum a-posteriori probability (MAP) estimator, responsive to the prior distribution and the plurality of typelogs; and
applying the estimated alignment function to the plurality of typelogs and correlating the result with a portion of a log from the well being drilled.