Since mid-February, interested U.S. producers have been evaluating in more detail whether or not they should get involved in the new multiple service contracts (MSCs) that will be offered this summer by Petroleos Mexicanos for development of the gas-rich Burgos Basin in northeastern Mexico. The basin is on geological trend with the prolific, heavily drilled gas trends found throughout South Texas. Experts think the Burgos could add an additional 1- to 1.5 billion cubic feet of gas per day within two years. (For details, see "Mexico's new upstream philosophy," Oil and Gas Investor, September 2002.) An online dataroom operated by Schlumberger's IndigoPool.com has posted over 35 gigabytes of seismic, log and other data on the basin. Producers may also visit a physical dataroom located in Reynosa, Mexico., that is equipped with three Unix-powered workstations. Pemex has said it will sell more detailed data packages in April or May. Bids for the MSCs will be evaluated on a rolling schedule beginning sometime this summer. The national oil company is offering work opportunities-not concessions-on eight blocks. Each block is divide into parcels of 16,000 acres. Blocks 7 and 8 are small with just three parcels each, while other blocks are much larger and have up to 67 parcels. For example, the Ricos Block has 41 parcels. Each is described online by size, number of existing wells, production history, logs, engineering and production facility reports, cash flow and expenses, shot point maps, seismic data and other information. Data is downloadable by play-Frio, Lobo, Wilcox, Vicksburg-or by trend or block. Detailed reserve reports per block, as completed by Dallas-based engineering firm Netherland, Sewell, are also available online. Schlumberger has operated a number of fields in the Burgos for Pemex and has done eight regional studies on reservoir simulation, focused on new frac techniques that were successful in South Texas. Pemex contracted with Stephen A. Holditch & Associates in the mid-1990s for similar studies, and the latter has since merged into Schlumberger, so a wealth of data is available. Mexico imports about 750 million cubic feet of gas, and that number is increasing rapidly, a clear signal there has been under-investment in the sector, says Lisa Pearl, the head of the Mexico gas and power practice in Cambridge Energy Research Associates' Mexico City office. -Leslie Haines