Method of drilling a bore hole
First Claim
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1. A method for drilling a borehole through a production zone underlying an overburden of various earth formations, the method comprising:
- drilling the borehole through the overburden with at least one drill bit selected to optimize at least one drilling performance parameter; and
drilling the borehole through at least part of the production zone with at least one other drill bit selected to optimize at least one production performance parameter.
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Abstract
A method for drilling a borehole through a production zone underlying an overburden of various earth formations includes drilling the borehole through the overburden with a first drill bit. The first drill bit being selected to optimize at least one drilling performance parameter. The method further includes drilling the borehole through at least part of the production zone with a second drill bit. The second drill bit being selected to optimize at least one production performance parameter. Methods for selecting parameters to optimize production performance are also disclosed.
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Citations
9 Claims
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1. A method for drilling a borehole through a production zone underlying an overburden of various earth formations, the method comprising:
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drilling the borehole through the overburden with at least one drill bit selected to optimize at least one drilling performance parameter; and drilling the borehole through at least part of the production zone with at least one other drill bit selected to optimize at least one production performance parameter. - View Dependent Claims (2, 3)
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4. A method for selecting parameters to optimize a production performance parameter in a drilled borehole, comprising:
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selecting initial bit design parameters and initial drilling operating parameters; simulating drilling of a selected earth formation, the simulating including determining at least one parameter related to production performance in the selected earth formation; adjusting at least one of the initial bit design parameters or at least one of the initial drilling operating parameters; repeating the simulating; and repeating the adjusting of the at least one of the bit design or drilling operating parameters and the simulating until the at least one parameter related to production performance is optimized, wherein the at least one parameter related to production performance comprises a size of drill cuttings. - View Dependent Claims (5, 6)
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7. A method for selecting parameters to optimize a production performance parameter in a drilled borehole, comprising:
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selecting initial bit design parameters and initial drilling operating parameters; simulating drilling of a selected earth formation, the simulating including determining at least one parameter related to production performance in the selected earth formation; adjusting at least one of the initial bit design parameters or at least one of the initial drilling operating parameters; repeating the simulating; and repeating the adjusting of the at least one of the bit design or drilling operating parameters and the simulating until the at least one parameter related to production performance is optimized, wherein the at least one parameter related to production performance comprises a surface area of the borehole. - View Dependent Claims (8, 9)
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Specification