System and method for formation detection and evaluation
First Claim
1. A method for using a plurality of planned markers with a drilling plan comprising:
- obtaining, by a computer system, a marker archive containing a plurality of baseline markers from at least one existing well, wherein each of the baseline markers corresponds to a waveform from a first log file obtained from the first well, and wherein each of the baseline markers is associated within the marker archive with a name, a true vertical depth (TVD) value of the corresponding waveform, and a waveform representation of the corresponding waveform;
creating, by the computer system, a plurality of planned markers for a drilling plan for a second well;
associating, by the computer system, each of the plurality of planned markers with one of the baseline markers;
assigning, by the computer system, an estimated TVD value and an uncertainty range to each of the planned markers; and
saving, by the computer system, each of the planned markers.
2 Assignments
0 Petitions
Accused Products
Abstract
Provided are a system and method for identifying planned markers while drilling a borehole. In one example, the method includes obtaining a plan containing planned markers that each corresponds to a baseline marker from an existing well. Each of the baseline markers corresponds to a waveform from a log file obtained from the existing well and is associated with a waveform representation of the corresponding waveform. Each of the planned markers is associated with an estimated true vertical depth (TVD) value. A second log file corresponding to the borehole is obtained that contains waveforms representing formation information detected within the borehole. The second log file is scanned for a planned marker based on the estimated TVD value and the waveform representation of the baseline marker corresponding to the planned marker. At least one match may be identified and reported for the planned marker.
98 Citations
30 Claims
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1. A method for using a plurality of planned markers with a drilling plan comprising:
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obtaining, by a computer system, a marker archive containing a plurality of baseline markers from at least one existing well, wherein each of the baseline markers corresponds to a waveform from a first log file obtained from the first well, and wherein each of the baseline markers is associated within the marker archive with a name, a true vertical depth (TVD) value of the corresponding waveform, and a waveform representation of the corresponding waveform; creating, by the computer system, a plurality of planned markers for a drilling plan for a second well; associating, by the computer system, each of the plurality of planned markers with one of the baseline markers; assigning, by the computer system, an estimated TVD value and an uncertainty range to each of the planned markers; and saving, by the computer system, each of the planned markers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for identifying a planned marker while drilling a borehole through a formation for a first well comprising:
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obtaining, by a computer system, a plan containing a plurality of planned markers expected while drilling the borehole, wherein each of the planned markers corresponds to a baseline marker from an existing second well, wherein each of the baseline markers corresponds to a waveform from a first log file obtained from the second well and is associated with a waveform representation of the corresponding waveform, and wherein each of the planned markers is associated with an estimated true vertical depth (TVD) value and an uncertainty range; obtaining, by the computer system, a second log file corresponding to the borehole, wherein the second log file contains a plurality of waveforms representing formation information detected within the borehole and includes formation information to a TVD that includes at least a portion of the uncertainty region of a first planned marker of the plurality of planned markers; scanning, by the computer system, the second log file for the first planned marker based on the estimated TVD value of the first planned marker, the uncertainty range of the first planned marker, and the waveform representation of the baseline marker corresponding to the first planned marker; identifying, by the computer system, at least one match for the first planned marker; and reporting, by the computer system, the at least one match. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A system comprising:
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a network interface; a processor coupled to the network interface; a memory coupled to the processor and configured to store a plurality of instructions executable by the processor, the instructions including instructions for; obtaining, by a computer system, a plan containing a plurality of planned markers expected while drilling a borehole through a formation for a first well, wherein each of the planned markers corresponds to a baseline marker from an existing second well, wherein each of the baseline markers corresponds to a waveform from a first log file obtained from the second well and is associated with a waveform representation of the corresponding waveform, and wherein each of the planned markers is associated with an estimated true vertical depth (TVD) value and an uncertainty range; obtaining a second log file corresponding to the borehole, wherein the second log file contains a plurality of waveforms representing formation information detected within the borehole and includes formation information to a TVD that includes at least a portion of the uncertainty region of a first planned marker of the plurality of planned markers; scanning the second log file for the first planned marker based on the estimated TVD value of the first planned marker, the uncertainty range of the first planned marker, and the waveform representation of the baseline marker corresponding to the first planned marker; identifying at least one match for the first planned marker; and reporting the at least one match. - View Dependent Claims (27, 28, 29, 30)
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Specification