Acid stimulation is a proven technique to enhance well productivity, but its effectiveness can be short-lived, especially in deep, formations like the Gulf of Mexico (GOM). In one GOM well, after frac-packing and two rounds of acid stimulations, performance improved initially, but the Productivity Index (PI) dropped from 2.10 Bbls/psi to 0.6 Bbls/psi. This decline left operators searching for answers: what went wrong, and how could they improve the long-term performance of the well?
A Major Roadblock
In this case study, productivity index loss was linked to formation damage. Despite initial frac-packing success, fines migration and asphaltene deposition reduced permeability, causing a drop in well output. Engineers analyzed performance data and used advanced, data-driven methods to uncover key insights and develop a targeted solution.
Data-Driven Insights to the Rescue
In an effort to pinpoint the root cause and determine a solution, engineers turned to advanced modeling and thorough analysis of historical data. This approach led to several key insights:
• Pressure & PI Matching: A SKIN value of 27 revealed the extent of formation damage, signaling the need for a more targeted treatment.
• Restimulation Potential: With a modified stimulation design, engineers proposed increasing the acid volume and introducing a diversion stage to enhance acid penetration. This approach would boost the well’s PI from 0.6 to 3.17 Bbls/psi.
A Smarter Approach
Rather than relying on previous treatments, operators were encouraged to take a more strategic, data-driven approach. By integrating a deeper understanding of reservoir conditions, formation damage, and historical performance, the revised stimulation plan focused on optimizing acid volumes and utilizing diversion techniques. This thoughtful adjustment increased the likelihood of achieving lasting improvements in well productivity.
To explore how this tailored approach played out and the specific strategies implemented to restore productivity, continue reading the full case study.
Looking Ahead
The key to sustainable well stimulation is continuous learning and adapting using real-time data. Solutions like StimPro help operators refine treatments, ensuring decisions are data-driven and tailored to the well’s needs. This case shows that with the right insights and approach, operators can overcome formation damage, extend well life, and boost productivity.
If you’re facing similar issues, our team is here to share how tools like StimPro can help refine and optimize your approach for better, long-term results. Contact our team to learn more.