Abstract

Natural gas accumulations have been found in Eocene limestones in several large domal structures along the outer margin of the arcuate Baluchistan ranges, formed during the Himalayan orogeny, and along the older north-south-trending Khairpur uplift. The composition of the gas varies widely between fields, indicating that the methane, carbon dioxide, and nitrogen components were derived from different source rocks and were mixed during migration and accumulation.

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