Methods and devices to perform offset surveys
AssigneeNabors Drilling Technologies USA, Inc.
InventorBosko Gajic
Life of this patent
Estimating the term…
Abstract
Systems, devices, and methods for performing surveys are provided. A first set of surveys may be performed during a drilling operation on a drilling rig. A tubular may be removed from a drill string, and a second set of surveys may be performed during a tripping out operation on the drilling rig, such that the first set of surveys is offset from the second set of surveys. A tubular may be added to the drill string, and a third set of surveys may be performed during a tripping in operation on the drilling rig, such that the third set of surveys is offset from the first set of surveys and the second set of surveys.
Claims20
A method of performing surveys during a drilling operation on a drilling rig, comprising:
- forming a stand by joining a plurality of tubulars;
- performing a drilling operation that advances a drill string to form a wellbore through a subterranean formation, including:
- adding a plurality of stands to the drill string;
- and
- taking a downhole survey when a stand of the plurality of stands is added to the drill string to create a first set of surveys;
- performing a tripping out operation to remove a portion of the drill string from the wellbore, including:
- removing only a portion of a first stand from the drill string;
- removing full-length stands from the drill string during the tripping out operation;
- and
- taking a downhole survey when each stand of the plurality of stands is removed from the drill string to create a second set of surveys, such that the second set of surveys is offset from the first set of surveys, wherein the first and second sets of surveys are offset from each other by a distance approximately equivalent to a length of the portion of the first stand removed during the tripping out operation.
A method of performing surveys during a drilling operation on a drilling rig, comprising:
- forming a plurality of stands by joining a plurality of tubulars;
- performing a drilling operation that advances a drill string through a subterranean formation to a downhole position, including taking a first set of downhole surveys at a first set of survey locations as stands of the plurality of stands are added to the drill string;
- removing only a portion of the stand from the drill string;
- and
- performing a tripping out operation to remove the drill string from the downhole position, including taking a second set of downhole surveys at a second set of survey locations as stands are removed from the drill string, wherein the first and second sets of surveys are offset from each other by a distance approximately equivalent to a length of the portion of the stand that was removed.
A method of performing surveys, comprising:
- performing a first set of surveys during a drilling operation advancing a drill string, the first set of surveys being performed at first locations spaced apart by a first distance along a length of a wellbore;
- removing a tubular from the drill string;
- performing a second set of surveys during a tripping out operation, the second set of surveys being performed at second locations spaced apart from the first set of surveys by a second distance along the length of the wellbore, the second distance being a different distance than the first distance;
- adding a tubular to the drill string;
- and
- performing a third set of surveys during a tripping in operation, the third set of surveys being performed at third locations being spaced apart from the first set of surveys by a third distance along the length of the wellbore, the third distance being a different distance than the first and second distances.
Dependencies are inferred from the claim text.