System and method for performing a drilling operation in an oilfield

A method of performing a drilling operation at a wellsite having a drilling rig configured to advance a drilling tool into a subsurface, comprising:

• obtaining a geologic target based on geologic information, wherein the geologic target is associated with a first volume;
• specifying a well target based on the geologic target and the geologic information associated with the geologic target, wherein the well target corresponds to a subset of the first volume;
• obtaining a well trajectory based on the well target;
• and
• advancing the drilling tool into the subsurface based on the well trajectory.

A system for performing a drilling operation at a wellsite having a drilling rig configured to advance a drilling tool into a subsurface, comprising:

• an interface configured to:
• obtain a first well trajectory, wherein the first well trajectory is associated with a first volume;
• and
• obtain information associated with a first subsurface entity, wherein the first subsurface entity is associated with a second volume;
• and
• a modeling unit configured to:
• determine that the first volume intersects the second volume using a three-dimensional relational comparison to obtain first intersection information;
• and
• update the first well trajectory, based on the first intersection information, to obtain an updated well trajectory.

A computer program product, embodying instructions executable by the computer to perform method steps for performing a drilling operation at a wellsite having a drilling rig configured to advance a drilling tool into a subsurface, the instructions comprising functionality to:

• obtain a well trajectory associated with a first volume;
• obtain information related to a first subsurface entity associated with a second volume;
• use a three-dimensional relational comparison to determine that the first volume intersects the second volume to define a first intersection information;
• update the well trajectory, based on the first intersection information, to obtain an updated well trajectory;
• and
• advance the drilling tool into the subsurface based on the updated well trajectory.

A computer program product, embodying instructions executable by the computer to perform method steps for performing a drilling operation at a wellsite having a drilling rig configured to advance a drilling tool into a subsurface, the instructions comprising functionality to:

• obtain a geologic target based on geologic information, wherein the geologic target is associated with a first volume;
• specify a well target based on the geologic target and the geologic information associated with the geologic target, wherein the well target corresponds to a subset of the first volume;
• obtain a well trajectory based on the well target, wherein the well trajectory is associated with a second volume;
• and
• obtain information associated with a subsurface entity, wherein the subsurface entity is associated with a third volume;
• determine that the second volume intersects the third volume using a three-dimensional relational comparison to obtain intersection information;
• update the well trajectory, prior to advancing the drilling tool, based on the intersection information to obtain an updated well trajectory;
• and
• advance the drilling tool into the subsurface based on the updated well trajectory.