Importance

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Abstract

In one example, an integrated well survey management and planning tool is implemented by a computer system. The tool can receive a trajectory of a proposed well from a surface to a subterranean geological target to be reached by drilling the well, and a survey plan indicating the number, position and survey type of surveys to be performed on the well while drilling the well. The tool can apply multiple error models based on the survey type for drilling the well. Each error model defines a respective uncertainty in reaching the subterranean geological target by drilling the well along the received trajectory. The tool can display, in a user interface, the received trajectory of the well and an uncertainty indicator determined by applying the multiple error models. The uncertainty indicator represents a combination of respective uncertainties defined by the multiple error models and indicates an uncertainty in drilling the well on the received trajectory.

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First Claim