1999 Conference Abstracts

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1999 Abstract: Rosete et al.

Integrated Characterization of Clastic Reservoirs in the Veracruz Basin: A Case Study from Novillero Field, Veracruz, Mexico

Karyna Rodriguez Rosete
Alvaro Chaveste Gutiérrez
Nancy L. Engelhardt-Moore
Bruce E. Hill
Jeff Chen
Eduardo Berendson
The Andrews Group International
A Core Laboratories Company
1880 Augusta Drive, Suite 200
Houston, Texas 77057-3130

Shamsuddin Shenawi
PGS Reservoir (U.S.), Inc.
1001 South Dairy Ashford, Suite 300
Houston, Texas 77077

Marcos Quesada Dimas
Felipe Jaime León Islas
Pedro Vela
PEMEX Exploration and Production
Av. Urano No. 420 Módulo "L"
Col. Ylang Ylang
Boca del Río, Veracruz, Mexico


Tertiary clastic sequences within the Veracruz Basin of Mexico have been prolific hydrocarbon producers for many decades. However, during the last few years, production in older fields has declined. Several fields have recently been restudied to evaluate behind-pipe, deepening potential, and new exploration opportunities in the area. This paper focuses on a multidisciplinary integrated reservoir characterization study of Novillero field situated in the Veracruz Basin.

Novillero field is located about 100 km southeast of Veracruz, Mexico, between the towns of Loma Bonita and Cosamaloapan. Discovered in 1966, this 15-well field has produced about 59 BCF of gas from calcareous turbidites and mudstone-rich debris flows.

Reprocessing of 2D seismic in 1996-97, along with the generation and calibration of synthetic seismograms, permitted seismic sequence stratigraphic analysis. Integration of the seismic and sequence stratigraphy, AVO analysis, biostratigraphy, well and core data, petrophysical analysis, and production data resulted in a complete reservoir model based on all available data. This field study led to the identification of numerous exploration and exploitation opportunities (both short- and long-term) in the field area.

A multidisciplinary team working on a common integrated Landmark platform incorporated geological, geophysical, petrophysical, and engineering data and expertise. This integration significantly reduced turnaround time and risk and obtained results that surpassed those of previous studies. Single-well recompletion of behind-pipe potential in previously untested horizons doubled total field production and led to renewed interest and development of older fields in the Veracruz Basin.