SPE NL YP invites you to a lecture on Thursday, May 23rd:
“Would you drill into a Volcano?”
By Prof. Stefan M. Luthi
Head of the section Applied Geology at Delft University of Technology
Discovery of a Gas accumulation in Lower Cretaceous Volcanic Rocks in the Songliao Basin, Northeast China, has led to a thorough evaluation of the prospect with the goal of assessing its economic viability. Thew gas is contained in rhyolitic pyroclastics and lava flows, and subordinately in the overlying conglomerates. The volcanic sequence structure forms a saddle along a fault where the volcanic vents were located. Trapping conditions are best described as combined stratigraphic-structural, since no full closure exists. Coal-bearing strata in the underlying sediments are considered the source rock. The volcanics consist of about equal parts of lavas and pyroclastics and their vertical and lateral distribution patterns allowed reconstructing the sequence of volcanic events. Porosity is vesicular and fractured in the lava flows, and microporous, vuggy and leached in the pyroclastics. Petrophysical analysis indicated that the volcanics are within a capillary transition zone througout their entire thickness, and that saturations have to be obtained from a saturation-height function above free water level as well as the capillary pressure curves from the various lithologies.
read full abstract and biography here:
SPE YP Lecture
Thursday 23rd of May 2013
Location: Café “Schlemmer”, Lange Houtstraat 17, The Hague
17.30-18.00 Welcome drinks - 18.00 Start lecture
Register for free by sending a message to SPE.YP.NL@gmail.com
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