PORE PRESSURE FROM SPECTROSCOPY AND SONIC DATA

A logging tool capable of making different types of measurements is provided, and a plurality of measurements on a formation are obtained. Certain mineral properties of the formation are assumed and a mixed properties theorem for the formation is invoked. Upper and lower velocity limits for sonic wa...

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Hauptverfasser: GEOFF WELLER, COLIN MICHAEL SAYERS, ALEXIS S. HUSSER, ARON KRAMER, JOHN P. HORKOWITZ
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creator GEOFF WELLER
COLIN MICHAEL SAYERS
ALEXIS S. HUSSER
ARON KRAMER
JOHN P. HORKOWITZ
description A logging tool capable of making different types of measurements is provided, and a plurality of measurements on a formation are obtained. Certain mineral properties of the formation are assumed and a mixed properties theorem for the formation is invoked. Upper and lower velocity limits for sonic waves traveling through the formation are determined using the above information. Biot's constant is also computed using the above information. LWD data on the formation is obtained and an effective stress is determined. A total stress is determined and, from that and the other information, a pore pressure is determined. Se proporciona una herramienta de digrafía capaz de hacer diferentes tipos de mediciones, y se obtiene una pluralidad de mediciones en una formación. Ciertas propiedades minerales de la formación se asumen y se invoca un teorema de propiedades mixtas para la formación. Los límites de velocidad superior e inferior para ondas sónicas que viajan a través de la formación se determinan utilizando la información anterior. La constante de Biot también se computa utilizando la información anterior. Se obtienen datos LWD en la formación y se determina una tensión efectiva. Se determina una tensión total y, a partir de eso y la demás información, se determina una presión intersticial.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title PORE PRESSURE FROM SPECTROSCOPY AND SONIC DATA
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