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US 10,590,755 B2Granted
Constructing survey programs in drilling applications
AssigneeSchlumberger Technology Corporation
InventorSebastien Labrousse
Life of this patent
Estimating the term…
Abstract
A computing system, non-transitory computer-readable medium, and a method for surveying a wellbore. The method includes receiving a first survey of the wellbore from a first survey tool, receiving a second survey of the wellbore form a second survey tool, determining a first uncertainty of the first survey tool and a second uncertainty of the second survey tool, determining a first growth rate of the first uncertainty and a second growth rate of the second uncertainty, and generating a combined survey based at least partially on the first and second growth rates.
Claims20
A method for surveying a wellbore to generate an improved survey of the wellbore, comprising:
- receiving a first survey of the wellbore from a first survey tool that utilizes a first, sensor-based technique to determine a first series of survey measurements with respect to depth for a depth range of the wellbore;
- receiving a second survey of the wellbore from a second survey tool that utilizes a second, different sensor-based technique to determine a second series of survey measurements with respect to depth for the depth range of the wellbore;
- determining, for the depth range of the wellbore, a first uncertainty of the first survey tool in making the first series of survey measurements and a second uncertainty of the second survey tool in making the second series of survey measurements;
- determining a first growth rate of the first uncertainty with respect to depth of the depth range of the wellbore and a second growth rate of the second uncertainty with respect to depth of the depth range of the wellbore;
- and
- generating the improved survey of the wellbore by using a combination of the first and second growth rates to determine, for the depth range of the wellbore, that, where the first growth rate is lower than the second growth rate, the improved survey of the wellbore includes a portion of the first series of survey measurements and that, where the second growth rate is lower than the first growth rate, the improved survey of the wellbore includes a portion of the second series of survey measurements.
3 more elements
A computing system, comprising:
- one or more processor;
- and
- a memory system comprising one or more non-transitory, computer-readable media storing instructions that, when executed by at least one of the one or more processors, cause the computing system to perform operations, the operations comprising:
- receiving a first survey of a wellbore from a first survey tool that utilizes a first, sensor-based technique to determine a first series of survey measurements with respect to depth for a depth range of the wellbore;
- receiving a second survey of the wellbore from a second survey tool that utilizes a second, different sensor-based technique to determine a second series of survey measurements with respect to depth for the depth range of the wellbore;
- determining, for the depth range of the wellbore, a first uncertainty of the first survey tool in making the first series of survey measurements and a second uncertainty of the second survey tool in making the second series of survey measurements;
- determining a first growth rate of the first uncertainty with respect to depth of the depth range of the wellbore and a second growth rate of the second uncertainty with respect to depth of the depth range of the wellbore;
- and
- generating an improved survey of the wellbore by using a combination of the first and second growth rates to determine, for the depth range of the wellbore, that, where the first growth rate is lower than the second growth rate, the improved survey of the wellbore includes a portion of the first series of survey measurements and that, where the second growth rate is lower than the first growth rate, the improved survey of the wellbore includes a portion of the second series of survey measurements.
6 more elements
A non-transitory, computer-readable medium storing instructions that, when executed by at least one processor of a computing system, cause the computing system to perform operations, the operations comprising:
- receiving a first survey of a wellbore from a first survey tool that utilizes a first, sensor-based technique to determine a first series of survey measurements with respect to depth for a depth range of the wellbore;
- receiving a second survey of the wellbore from a second survey tool that utilizes a second, different sensor-based technique to determine a second series of survey measurements with respect to depth for the depth range of the wellbore;
- determining, for the depth range of the wellbore, a first uncertainty of the first survey tool in making the first series of survey measurements and a second uncertainty of the second survey tool in making the second series of survey measurements;
- determining a first growth rate of the first uncertainty with respect to depth of the depth range of the wellbore and a second growth rate of the second uncertainty with respect to depth of the depth range of the wellbore;
- and
- generating an improved survey of the wellbore by using a combination of the first and second growth rates to determine, for the depth range of the wellbore, that, where the first growth rate is lower than the second growth rate, the improved survey of the wellbore includes a portion of the first series of survey measurements and that, where the second growth rate is lower than the first growth rate, the improved survey of the wellbore includes a portion of the second series of survey measurements.
3 more elements
Dependencies are inferred from the claim text.