Andes to explore Argentine Nirihuau basin block

Chubut government oil and gas concern Petrominera Chubut SE has awarded the Nirihuau Sur CN-1 block to a joint venture of Andes Energia Argentina SA and Kilwer SA.

By OGJ editors
HOUSTON, June 10
– The Chubut government oil and gas concern Petrominera Chubut SE has awarded the Nirihuau Sur CN-1 block to a joint venture of Andes Energia Argentina SA and Kilwer SA.

The 4,538 sq km block is in the northwest part of Chubut Province in the Nirihuau basin, which has geology similar to that of the Neuquen basin to the north and San Jorge basin to the southeast. Andes SA holds a 60% economic interest, Kilwer has 20%, and Petrominera Chubut has a 20% carried interest.

Oil springs are well known in the Nirihuau basin. A shallow well located 31 km west of the block supplies gas to a village. A neighboring block was awarded to YPF-Pluspetrol. The exploratory interest arises from a model supported by geochemical studies, surface data, and chronological data that indicate the presence of a petroleum system (Tertiary El Foyel Group), which would explain the origin of the oil springs, Andes Energia said.

Work program in the first 3 years of the 6-year license calls for collection of 3,000 geochemical samples, shooting 50 km of 2D seismic, and reprocessing of a further 150 km of 2D.

The award brings Andes’ interests in Argentina to 11 licenses totaling more than 30,000 sq km. YPF has taken farmouts from Andes on eight of the licenses.

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