TGS has acquired around 75% of its 186,000-km (115,575-mi) Gigante 2D seismic survey over Mexico’s offshore sector.

This is designed to tie into the company’s regional 2D grid across the US Gulf of Mexico.

Analysis of preliminary data has led to identification of numerous prospective play fairways within a variety of structural provinces.

Delivery of fasttrack pre-stack time data continues, with 103,380 km (64,237 mi) currently available along with 64,000 km (39,768 mi) of preliminary pre-stack depth data for Mexico’s Deep Water Bid Round this December. 

In addition, TGS has acquired almost one-third of associated multi-beam data, used to identify hydrocarbon seeps on the seafloor. It is using the results for its seafloor coring operations which began on Jan. 22.

Coring in the Perdido area has finished. Seafloor core samples will be analyzed to determine hydrocarbon grade and will be combined with the company’s other geoscience data as part of a comprehensive interpretative study of the region.

Elsewhere, Norway’s government has notified TGS of a claim for compensation of up to NOK326 million ($39 million) covering the government’s alleged tax losses.

These are said to have arisen from tax benefits received by Skeie Energy (later known as E&P Holding AS) under the Petroleum Tax Act in connection with a sale of seismic data in 2009 from TGS to Skeie.

The government alleges that TGS has aided Skeie in attaining undue tax advantages. However, TGS denies any wrongdoing and maintains its position that it is not liable for the claims.

It views the sale of seismic data to Skeie Energy as a legitimate transaction between two independent companies, involving a sale at market prices.