Oil & Natural Gas Projects
Exploration and Production Technologies
Integrated Approach for the Petrophysical Interpretation of Post- and Pre-Stack
3-D Seismic Data, Well-Log Data, Geological Information, and Reservoir Production
Data via Bayesian Stochastic Inversion
This project was selected in response to DOE's Oil Exploration and Production
solicitation DE-PS26-01NT41048, focus area Critical Upstream Advanced Diagnostics
and Imaging Technology. The goal of the solicitation was to continue critical
upstream cross-cutting, interdisciplinary research for the development of advanced
and innovative technologies for imaging and quantifying reservoir rock and fluid
properties for improved oil recovery.
The objective of this project is to develop novel algorithms for the efficient
quantitative integration of 3-D pre-stack seismic amplitude data, well logs,
rock-core data, geological information, and reservoir production measurements
into accurate and reliable space-time descriptions of hydrocarbon reservoirs.
University of Texas
This project developed:
- Reliable and efficient stochastic and deterministic algorithms to invert
pre-stack seismic amplitude measurements into one-dimensional spatial distributions
of P-wave impedance, S-wave impedance, and bulk density.
- Novel algorithms for the joint inversion of pre-stack seismic amplitude
data, well logs, and time records of fluid production measurements into 3-D
distributions of lithology, porosity, permeability, and fluid saturation.
The joint inversion algorithms developed in this project provide a reliable
quantitative methodology to describe hydrocarbon reservoirs and to predict their
behavior after the onset of production. Such a methodology allows active control
of reservoirs in order to optimize the recovery of existing hydrocarbon assets.
This is the first research undertaken to address the problem of measurement
integration in hydrocarbon reservoirs with a rigorous inversion methodology
that jointly honors pre-stack seismic amplitude measurements, well logs, and
fluid production measurements.
- Successfully demonstrated the joint inversion methodology on challenging synthetic
and field data sets.
- Developed original and novel algorithms to construct spatial distributions
of lithology, porosity, permeability, and fluid saturation based on the statistical
integration of pre-stack seismic amplitude measurements, rock-core data, and
time records of fluid production.
Current Status (November 2005)
This project was successfully completed in September 2003. The final report
was submitted to DOE shortly thereafter.
Three annual reports and one final report were submitted to DOE. The publication
list stemming from this project also includes four journal articles published,
four journal articles currently under review, and eight refereed conference
Project Start: September 28, 2000
Project End: February 29, 2004
Anticipated DOE Contribution: $1,200,000
Performer Contribution: $240,000 (16% of total)
NETL - Purna Halder (firstname.lastname@example.org or 918-699-2083)
U. of Texas - Carlos Torres-Verdin (email@example.com or 512-471-4216)