The answer to the question asked about why Halliburton's Energy Task Group would compile such maps (Iraq, Saudi Arabia and United Arab Emirates) is simple - commercial intelligence. I dare say they have similar information on a great number of other regions. They will use the information for the following:
1. Status of existing oil reservoirs - as older fields come to what is perceived to be their end of life - a business opportunity exists to offer the services of reservoir engineers and modern technology to extend the life of those fields. Example UK's Argyll Field in the North Sea.
2. Keeping track on how long oil-field infrastructure has been in place lets you know when such infrastructure will require inspection, remedial maintenance and/or replacement.
3. Keeping yourself informed of the status of fields allows you to identify and maket new technology to improve those fields.
Another myth that should also be exploded regarding Halliburton being awarded work without competition. Halliburton is a Frame Work Contractor for the US Army - Halliburton won that competitive contract with the US Army about five years ago under the Clinton Administration - Source for this information is a letter, dated 8th April, 2003, from the US Army to a Senator Waxman, in response to his letter of 26th March, 2003.
Establishing Frame Work Agreements greatly reduces the cost of tendering and awarding contracts - with regard to the oil-field fire contract that would be why Halliburton got the job - they already had won a competitive contract, and that Frame Work Contract was in place.