The works highlighted in this year’s Acidizing feature demonstrate novel, diverse innovations in sustainability, enhanced productivity, and logistical efficiency by authors of SPE conference papers. Papers centered on important projects in Japan, Iraq, and Brazil indicate that global contributions are necessary for the industry’s advancement as it navigates a wide array of obstacles.
Paper SPE 226370 provides a case study in which a depleted Japanese onshore gas field designated for a carbon capture, use, and storage project posed difficulties for completion work because of high heterogeneity with a wide range of permeabilities. The authors write that a completions strategy involving oriented tubing-conveyed perforation followed by acidizing operations resulted in sufficient well productivity even in significant overbalanced conditions.
The authors of paper SPE 228992 detail what they describe as the industry’s first tool-free fishbone fracture stimulation technology using sand jetting and acidizing in openhole wells, applied to a low-permeability carbonate reservoir in central Iraq. The approach overcame traditional issues posed by irregular wellbore trajectories to the goal of efficient and low-cost multistage stimulation.
Finally, paper SPE 230588 describes a comprehensive effort by an operator to assess the true risk of using seawater in carbonate acidizing, a measure traditionally avoided because of concerns about calcium sulfate precipitation and scaling, but which is becoming increasingly appealing in an effort to reduce the amount of fresh water needed for offshore acidizing operations.
Whether striving to meet globally critical sustainability goals, unlocking the potential of highly challenging reservoirs in a cost-efficient manner, or tackling the important issue of freshwater demand for offshore operations, authors of SPE conference papers continue to deliver a spectrum of advancements that ensure the industry’s forward momentum in an environment fraught with uncertainty.
Summarized Papers in This June 2026 Issue
SPE 226370 TCP and Acidizing Operation Achieved Into Depleted Gas Reservoir for CCUS Project by Shun Dotoku, SPE, Ayumi Kubota, and Miki Kohyama, INPEX, et al.
SPE 230588 Study Reviews Use of Seawater Base-Acid Systems in Acidizing Presalt Carbonates by Alexandre Z.I. Pereira, SPE, Cecelia T. Azevedo, and Dayana N. Silva, SPE, Petrobras, et al.
SPE 228992 Tool-Free Fishbone Fracture Acidizing Stimulation Implemented in Openhole Horizontal Well by Yong Xiao, Cheng Ma, and Liping Jiang, China Zhenhua Oil Company, et al.
Recommended Additional Reading
SPE 231008 Green Acid Technology for Carbonate Reservoirs in Kuwait: A Sustainable Approach to Reservoir Stimulation and Management by Haithm Salah Hagar, University of Kansas, et al.
SPE 230556 A Novel Single-Stage Sandstone Acid System for Low-Temperature Applications by Konstantin Vidma, SLB, et al.
SPE 224030 Single-Stage Sandstone Acidizing Fluid Improves Well Productivity in Subsea Multiwell Hydraulic Intervention Campaign by Chinedu Okpalla, TotalEnergies, et al.
Chris carpenter joined SPE in 2001, starting his career as an associate editor and then managing editor of SPE’s peer-reviewed journals. In 2013, he joined the staff of the Journal of Petroleum Technology as technology editor. Carpenter is responsible for Tech Focus feature synopses of selected SPE conference papers and is liaison for the JPT Editorial Review Board. He has also served as an adjunct professor of English for several Texas community colleges since 2001. He holds a BA degree in history from Hendrix College, an MA degree in English from Texas A&M University, and an MFA in writing from the University of Arkansas.