The Design and Execution of an Alkaline/Surfactant/Polymer Pilot Test
- Abhinav Sharma | Alex Azizi-Yarand (Rex Energy Corporation) | Bryan Clayton (Rex Energy Corporation) | Greg Baker (Rex Energy Corporation) | Patrick Mckinney (Rex Energy Corporation) | Christopher Britton (University of Texas at Austin) | Mojdeh Delshad (University of Texas at Austin) | Gary Pope (University of Texas at Austin)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- October 2013
- Document Type
- Journal Paper
- 423 - 431
- 2013. Society of Petroleum Engineers
- 5.6.4 Drillstem/Well Testing, 2.5.2 Fracturing Materials (Fluids, Proppant), 5.6.5 Tracers, 5.4.1 Waterflooding
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A tertiary alkaline/surfactant/polymer (ASP) pilot flood was implementedduring 2010 in the Illinois basin of the US, and is continuing currently. Withinitial discovery of the Bridgeport sandstone formation in the early 1900s andmore than 60 years of waterflooding, the pilot was designed to demonstrate thatASP flooding could produce sufficient quantities of incremental oil to sanctiona commercial project. Laboratory experiments, including corefloods, wereperformed to determine the optimal chemical formulation for the pilot and toprovide essential parameters for a numerical-simulation model.Polymer-injectivity tests, single well chemical tracer tests (SWCTTs), and aninterwell-tracer-test (IWTT) program were all performed to prepare for andsupport a full interpretation of the pilot results. A field laboratory was runthrough the duration of the pilot to monitor the quality of the injection andproduction fluids, which turned out to be critical to the success of the pilot.We present the results and interpretation of the ASP pilot to date, thechallenges faced during the project, and the lessons learned from the fieldperspective.
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