Drilling scorecard
AssigneeCanrig Drilling Technology Ltd.
InventorsScott G. Boone, Colin Gillan
Life of this patent
Estimating the term…
Abstract
Method, system, and apparatus for evaluating drilling accuracy performance in drilling a wellbore that can include: (1) monitoring an actual toolface orientation of a tool, e.g., a downhole steerable motor, by monitoring a drilling operation parameter indicative of a difference between the actual toolface orientation and a toolface advisory; (2) recording the difference between the actual toolface orientation and the toolface advisory; and (3) scoring the difference between the actual toolface orientation and the toolface advisory.
Claims19
A method of evaluating drilling performance in a wellbore, which comprises:
- monitoring, during wellbore drilling, an actual toolface orientation of a downhole steerable motor by monitoring a drilling operation parameter indicative of a difference between the actual toolface orientation and a toolface advisory;
- recording, at a plurality of times during the wellbore drilling, the difference between the actual toolface orientation and the toolface advisory;
- scoring each of the differences between the actual toolface orientation and the toolface advisory by assigning respective values to the differences, each of the values representing drilling performance at the corresponding time at which the corresponding difference was recorded, each of the values depending on the corresponding difference;
- generating a total score, the total score being based on a sum of the values, the total score indicating the degree to which the actual toolface orientation was kept in a correct orientation over the plurality of times during the wellbore drilling;
- and
- providing at least the total score to an evaluator.
A system for evaluating drilling performance in drilling a wellbore, which comprises:
- means for monitoring, during wellbore drilling, an actual toolface orientation of a downhole steerable motor by monitoring a drilling operation parameter indicative of a difference between the actual toolface orientation and a toolface advisory;
- means for recording, at a plurality of times during the wellbore drilling, the difference between the actual toolface orientation and the toolface advisory;
- means for scoring each of the differences between the actual toolface orientation and the toolface advisory by assigning respective values to the differences, each of the values representing drilling accuracy at the corresponding time at which the corresponding difference was recorded, each of the values depending on the corresponding difference;
- means for generating a total score, the total score being based on a sum of the values, the total score indicating the degree to which the actual toolface orientation was kept in a correct orientation over the plurality of times during the wellbore drilling;
- and
- means for providing at least the total score to an evaluator.
A drilling-accuracy scoring apparatus for evaluating performance in drilling a wellbore, the apparatus comprising:
- a sensor configured to, during wellbore drilling, detect a drilling operation parameter indicative of a difference between an actual toolface orientation of a downhole steerable motor and a toolface advisory, and record, at a plurality of times during the wellbore drilling, the difference between the actual toolface orientation and the toolface advisory;
- a controller configured to calculate and score each of the differences between the actual toolface orientation and the toolface advisory by assigning respective values to the differences, each of the values representing drilling performance at the corresponding time at which the corresponding difference was recorded, each of the values depending on the size of the corresponding difference, the controller being further configured to generate a total score, the total score being based on a sum of the values, the total score indicating the degree to which the actual toolface orientation was kept in a correct orientation over the plurality of times during the wellbore drilling;
- and
- a display adapted to provide at least the total score to an evaluator.
Dependencies are inferred from the claim text.