Interactive method for real-time displaying, querying and forecasting drilling event and hazard information
First Claim
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1. A method for characterizing a drilling hazard in a proposed wellbore, comprising:
- determining a well plan including at least a wellbore trajectory;
estimating a likelihood of occurrence of, a position along the trajectory and a severity of consequences of at least one drilling hazard; and
displaying on a representation of at least a portion of the wellbore trajectory, at least one of the position of, the likelihood and the severity of the at least one drilling hazard.
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Abstract
A method is disclosed for characterizing a drilling hazard. The method includes determining a well plan including at least a wellbore trajectory. A likelihood of occurrence of at least one drilling hazard is estimated. A severity of the at least one drilling hazard is estimated. The hazard is displayed on a representation of the wellbore trajectory, by indicating thereon a position of, the likelihood and the severity of the at least one drilling hazard.
154 Citations
33 Claims
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1. A method for characterizing a drilling hazard in a proposed wellbore, comprising:
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determining a well plan including at least a wellbore trajectory;
estimating a likelihood of occurrence of, a position along the trajectory and a severity of consequences of at least one drilling hazard; and
displaying on a representation of at least a portion of the wellbore trajectory, at least one of the position of, the likelihood and the severity of the at least one drilling hazard. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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13. A method for optimizing a well plan for a proposed wellbore, comprising:
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selecting an initial well plan comprising at least a wellbore trajectory;
determining for the initial well plan a position along the trajectory, a likelihood of occurrence, and a severity of consequence of encountering at least one drilling hazard;
adjusting at least one parameter of the initial well plan;
redetermining the position, likelihood and severity of the at least one drilling hazard; and
repeating the adjusting and redetermining until at least one of a most likely cost to drill a wellbore, an amount of lost time and a likelihood of encountering the at least one drilling hazard is minimized.
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23. A method for drilling a well, comprising
selecting an initial well plan comprising at least a wellbore trajectory; -
starting drilling the well according to the initial well plan;
measuring at least one of a drilling operating parameter and an earth formation characteristic during the drilling;
determining at least one of a position along the trajectory, a likelihood of encountering and a severity of occurrence of at least one drilling hazard in response to the measuring;
adjusting at least one parameter of the initial well plan for an unfinished portion of the well;
redetermining the position, likelihood and severity of the at least one drilling hazard;
repeating the adjusting and redetermining until for the unfinished portion of the well at least one of a most likely cost to drill, an amount of lost time and a likelihood of encountering the at least one drilling hazard is minimized; and
drilling the unfinished portion of the well according to the adjusted well plan.
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Specification