General Meeting Society of Petroleum Engineers - Denver Section - November 16, 2011
Wednesday, November 16, 2011 from 11:30 AM to 1:00 PM (MST)
SPE General Meeting
Topic: Integrating Fracture Diagnostics and Engineering Data in the Marcellus Shale
Speaker: Mike Mayerhofer, Pinnacle
Date: Wednesday - November 16, 2011
Time: 11:30 am
Place: Denver Athletic Club
1325 Glenarm Place
Map of 1325 Glenarm Pl
Denver, CO 80204-2114
Cost: $25.00 ($30.00 at the door, if space is available)
Reservation Deadline: Noon, Monday November 14, 2011
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This paper presents results from a group of Marcellus shale horizontal wells. The wells were completed in sequential order with preplanned fracture and reservoir diagnostics to better understand completion and stimulation efficiency and drainage patterns given a certain well spacing in the Marcellus Shale. Insights were gained by integrating microseismic fracture mapping, diagnostic fracture injection tests (DFITs), downhole pressure gauges, post-frac pressure transient analysis, non-toxic chemical tracer and production data.
Microseismic fracture mapping was performed during the completion of two offset horizontal wells. Since the two wells were completed sequentially, it was possible to deploy downhole pressure gauges in one well while the offset well was being completed. This procedure allowed for the unique opportunity to monitor potential communication between the two wells and correlate this with the overlap of microseismic activity. The gauge was also used to monitor the initial post-frac buildup in that well. A second buildup test was conducted after approximately 5 months of production.
The integration of various engineering data leads to interesting conclusions with respect to effective fracture length, correlation of microseismic events with actual hydraulic fracture communication, and production interference. These insights provide important information for optimizing infill drilling, well placement, and fracture completion strategies in the Marcellus shale.
Mr. Mayerhofer is the director of the Hydraulic Fracturing Center of Excellence at Pinnacle a Halliburton Service in Houston. His responsibilities include the application of microseismic and tiltmeter hydraulic fracture mapping results for optimizing fracture completion, well placement and infill drilling strategies, the design and evaluation of hydraulic fracturing treatments, reservoir engineering, and integrated field studies. His twenty-year involvement with hydraulic fracturing and reservoir engineering includes fundamental research and real field applications in various global producing areas and has resulted in over 50 technical papers and journal articles. Prior to joining Pinnacle Technologies in 1997, he worked for Union Pacific Resources in Ft. Worth. He has a Doctorate in Petroleum Engineering from Mining University Leoben in Austria. He was a member of the SPE Well Completions Committee from 1998 to 2001 and has also served on the JPT Editorial Committee.