摘要:
In one aspect, a method of making a drill bit is disclosed that includes selecting a drill bit configuration, obtaining a stress map for the drill bit configuration relating to a drilling operation, performing a mechanical test with an actual drill bit having the selected configuration, and selecting a location on a surface of the drill bit for installing a sensor thereat based on a location of low stress from the stress map and results of the mechanical test, and placing a sensor at the selected location.
摘要:
In one aspect, a method of making a drill bit is disclosed that includes selecting a drill bit configuration, obtaining a stress map for the drill bit configuration relating to a drilling operation, performing a mechanical test with an actual drill bit having the selected configuration, and selecting a location on a surface of the drill bit for installing a sensor thereat based on a location of low stress from the stress map and results of the mechanical test, and placing a sensor at the selected location.
摘要:
Methods of designing an earth-boring tool are described, including calculating one or more performance parameters of the tool based on drilling conditions, a plurality of depth of cut values, and a set of values of other design variables. Methods of enhancing a performance parameter in the design of an earth-boring tool are also described, including calculating the performance parameter based at least partially on a plurality of depth of cut values and a first set of values of other design variables, calculating the performance parameter based at least partially on a second set of values of the other design variables different than the first set, and comparing the calculated performance parameters to determine which of the first and the second set is closer to a target range or value across a range of the plurality of depths of cut. Related methods of forming an earth-boring tool are also described.
摘要:
Methods of designing an earth-boring tool are described, including calculating one or more performance parameters based on drilling conditions, a plurality of wear state values, and a set of values of other design variables. Methods of enhancing a performance parameter in the design of an earth-boring tool are also described, including calculating the performance parameter based at least partially on a plurality of wear state values and a first set of values of other design variables, calculating the performance parameter based at least partially on the plurality of wear state values and a second set of values of design variables different than the first set, and comparing the calculated performance parameters to determine which of the first and the second set is closer to a target range or value across a range of the plurality of wear state values. Related methods of forming an earth-boring tool are also described.
摘要:
A method for optimizing drill bit design and an optimized drill bit for drilling a well in an earth formation, wherein, in one embodiment, the optimized drill bit comprises a bit body with a plurality blades spaced along the bit body, each blade having a curved outer edge, a substantially flat forward face, and a number of insert pockets milled into each blade. A cutter insert is preferably secured into each insert pocket. The inserts are selected to give a desired cutter orientation, which is preferably independent of the orientation of the insert. Finally, a cutter is preferably secured at least partially within each cutter insert. The insert pockets may be formed by a cylindrical flat ended mill oriented substantially orthogonal to an outer edge of the blade, thereby creating the insert pockets with two substantially flat sidewalls, a curved endwall, and a substantially flat bottom.
摘要:
Methods of designing an earth-boring tool are described, including calculating one or more performance parameters based on drilling conditions, a plurality of wear state values, and a set of values of other design variables. Methods of enhancing a performance parameter in the design of an earth-boring tool are also described, including calculating the performance parameter based at least partially on a plurality of wear state values and a first set of values of other design variables, calculating the performance parameter based at least partially on the plurality of wear state values and a second set of values of design variables different than the first set, and comparing the calculated performance parameters to determine which of the first and the second set is closer to a target range or value across a range of the plurality of wear state values. Related methods of forming an earth-boring tool are also described.
摘要:
Methods of designing an earth-boring tool are described, including calculating one or more performance parameters of the tool based on drilling conditions, a plurality of depth of cut values, and a set of values of other design variables. Methods of enhancing a performance parameter in the design of an earth-boring tool are also described, including calculating the performance parameter based at least partially on a plurality of depth of cut values and a first set of values of other design variables, calculating the performance parameter based at least partially on a second set of values of the other design variables different than the first set, and comparing the calculated performance parameters to determine which of the first and the second set is closer to a target range or value across a range of the plurality of depths of cut. Related methods of forming an earth-boring tool are also described.