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The Leading Edge; January 2003; v. 22; no. 1; p. 32-36; DOI: 10.1190/1.1542752
© 2003 Society of Exploration Geophysicists
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Seismic facies analysis based on 3D multiattribute volume classification, La Palma Field, Maracaibo, Venezuela

Victor Linari, Marcelo Santiago and Carlos Pastore

Tecpetrol, Argentina

Kostia Azbel and Manuel Poupon

Paradigm Geophysical, Houston, Texas, U.S.

Corresponding author: Victor.Linari@tecpetrol.com

Corresponding author: kazbel@ParadigmGeo.com

The first 20% of the full text of this article appears below.

La Palma Field, in the southwest corner of Maracaibo Basin (Zulia State, Venezuela) approximately 300 km south of the city of Maracaibo, is in a license block called Col-n Unit (Figure 1). The field is operated by Tecpetrol (Argentina), which leads a consortium of three oil companies that also includes CMS Oil & Gas (U.S.) and Coparex (France).


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  		Figure 1. Location of the Col-n Unit license block (green) and La Palma Field (purple).

 
La Palma was discovered in June 1999, when exploration well LPT-1X penetrated oil-bearing reservoirs within Mirador Formation (Eocene) at 8687 ft subsea. The initial production rate (of 2000 b/d of light oil) encouraged Tecpetrol to drill the LPT-2 step-out well, which confirmed a significant amount of hydrocarbons in the Mirador reservoir. Consequently, a Venezuelan contractor (Suelopetrol) shot a 190 km2 3D seismic survey in 2000. Development drilling was begun soon after its completion, and five wells were located at the crest of a regional North-South anticline structure (Figure 2). This anticline is part of a much larger structural trend that extends nearly 80 km across the Col-n Unit. Within this trend, hydrocarbons are produced from Tertiary and Cretaceous reservoirs in several neighboring fields, namely Rosario to the north and Socuavo to the south.


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  		Figure 2. (a) Time map of the M1 horizon (peak). Dashed black line shows the location of inline 332. (b) W-E inline 332. M1 horizon is red. The reservoir zone is between the blue lines. Note that La Palma Field is at the apex of a major N-S anticline structure.

 
The primary drilling target within La Palma is Mirador Formation, a succession of fluvial sediments deposited in a braided river environment that are known for excellent reservoir properties. Mirador Formation has an upper member (Mirador I) and a lower member (Mirador II) separated by . . . [Full Text of this Article]




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