System and method for formation detection and evaluation

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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LOCKHART DWIGHT A, BENSON TODD W, STOKELD BRIAN EUGENE
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MINING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS REGULATING
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Beschreibung
Zusammenfassung:	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.