System and method for formation detection and evaluation
First Claim
1. A method for using one or more planned markers with a drilling plan, comprising:
- using, by a computer system, a first log file of a first well in order to identify and store one or more markers that have a name, a true vertical depth (TVD) and a waveform;
creating, by the computer system, one or more planned markers for a second well, where each of the one or more planned markers corresponds to one of the identified and stored markers;
assigning, by the computer system, an estimated TVD value and an uncertainty range value to each of the one or more planned markers; and
storing, by the computer system, each of the one or more planned markers with the assigned estimated TVD and the uncertainty range value.
2 Assignments
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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.
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Citations
30 Claims
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1. A method for using one or more planned markers with a drilling plan, comprising:
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using, by a computer system, a first log file of a first well in order to identify and store one or more markers that have a name, a true vertical depth (TVD) and a waveform; creating, by the computer system, one or more planned markers for a second well, where each of the one or more planned markers corresponds to one of the identified and stored markers; assigning, by the computer system, an estimated TVD value and an uncertainty range value to each of the one or more planned markers; and storing, by the computer system, each of the one or more planned markers with the assigned estimated TVD and the uncertainty range value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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; using, by a computer system, a first log file of a first well in order to identify and store one or more markers that have a name, a true vertical depth (TVD) and a waveform; creating, by a computer system, one or more planned markers for a second well, where each of the one or more planned markers corresponds to one of the identified and stored markers; assigning, by a computer system, an estimated TVD value and an uncertainty range value to each of the one or more planned markers; and storing, by a computer system, each of the one or more planned markers with the assigned estimated TVD and the uncertainty range value. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for using one or more planned markers with a drilling plan, comprising:
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using, by a computer system, a first log file of a first well in order to identify and store one or more markers that have a name, a true vertical depth (TVD) and a waveform; creating, by the computer system, one or more planned markers for a second well, where each of the one or more planned markers corresponds to one of the identified and stored markers; assigning, by the computer system, an estimated TVD value and an uncertainty range value to each of the one or more planned markers; storing, by the computer system, each of the one or more planned markers with the assigned estimated TVD and the uncertainty range value; using, by the computer system, a second log file during drilling of the second well; scanning, by the computer system, the second log file to indentify a first planned marker of the one or more planned markers, wherein the first planned marker corresponds to a first baseline marker of a plurality of baseline markers; identifying, by the computer system, a measured TVD value of the first planned marker from the second log file; comparing, by the computer system, the measured TVD value with the estimated TVD value of the first planned marker to obtain a comparison result; and reporting, by the computer system, the comparison result. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. 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; using, by a computer system, a first log file of a first well in order to identify and store one or more markers that have a name, a true vertical depth (TVD) and a waveform; creating, by a computer system, one or more planned markers for a second well, where each of the one or more planned markers corresponds to one of the identified and stored markers; assigning, by a computer system, an estimated TVD value and an uncertainty range value to each of the one or more planned markers; storing, by a computer system, each of the one or more planned markers with the assigned estimated TVD and the uncertainty range value; drilling a portion of the second well using the drilling plan; and assessing, by the computer system, an accuracy of the drilling plan based on comparisons between the estimated TVD values of the one or more planned markers and measured TVD values of the one or more planned markers identified from a second log file obtained while drilling the second well. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification