Yang H., Wei K., Qiu X., Zhou C.C.
University of Wyoming, US
Keywords: gel dam, horizontal well, plugging agent, tight fractured oil reservoir, water channeling
To address the challenge of water channeling in water flooding of Honghe oilfield, a tight fractured sandstone reservoir characterized by extensive fractures, experimental study on polymeric gel and field trial of constructing a polymeric gel dam had been conducted. Numerous performance indices of a formula of polymer gel were examined including anti-aging, salinity tolerance, plugging rate and anti-flushing resistance. The experimental results showed superior performances of the plugging agent. The field trial performed in two horizontal wells indicated that with the application of gel dam technology, the oil production rate of producers increased due to the decreased water cut. The accumulated increased oil was up to 102 t, and water cut dropped from 99.0% to 92.3% with effective duration of over 217 days. The gel dam technology shows great potential to solve the water channeling and to enhance the oil recovery during water flooding in tight fractured reservoir.
Journal: TechConnect Briefs
Volume: TechConnect Briefs 2021
Published: October 18, 2021
Pages: 93 - 96
Industry sector: Advanced Materials & Manufacturing
Topics: Advanced Materials for Engineering Applications, Materials Characterization & Imaging
ISBN: 978-0-578-99550-2