Patent ID: 8867040
Filing Date: 2014-10-21
Classification: E21B,G01V

Abstract:
1. A method of measuring and assigning fluid, geochemical and geomechanical properties to individual coal seam in a well penetrating multiple coal seams, comprising the steps of: (a) deploying a test string, comprising a straddle packer assembly, at least one valve assembly, and two pressure gauges positioned at different heights above the valve assembly into a well on a work string, (b) positioning the straddle packer across a coal seam and setting the packers to isolate the test string and work string proximate to the coal seam and from the remainder of the wellbore, (c) opening a valve above the straddle packer assembly to allow fluid to flow from the coal seam into the work string, (d) monitoring fluid flow rates and pressures at the coal seam during a flow period, (e) monitoring fluid properties with a spectroscopic analyzer that have entered the test string, and (f) continuing the flow period until the monitored fluid reach a steady state condition.