Advancing Sustainability: Rig-Less, Environmentally Friendly Wireline Stimulation Technology for Enhanced Oil and Gas Production

Abstract This paper introduces an innovative wireline acidizing technique using a special sealed metal carrier with a dry chemical inside. The carrier is sent down the well using Wireline or digital slickline methods. When it reaches the target zone, an electric trigger causes a reaction that produces hot acid vapor, reducing the need for heavy equipment. The main goal was to stimulate a section of the Lower Cretaceous Reservoir Zone to clean the near-wellbore area, reduce skin, and improve productivity. This method, deploying the tool inside 3 1/2″ tubing, significantly cut costs and CO2 emissions compared to traditional coil tubing stimulation methods and increased injectivity by 1.8 times after stimulation. The process involved close cooperation between the operator and the service company. Damage mechanisms, well completion design, mineralogy, well deviation, formation characteristics, and compatibility were carefully assessed. A single 2.5″ HCl Thru-Tubing tool to treat a 9-foot perforated interval was used, which effectively removed scale and stimulated the near-wellbore matrix, improving fluid flow into the reservoir. Before treatment, an injection test showed a flow rate of 1.5 bpm at 1900 psig. After treatment, the injection rate increased to 2.7 bpm at the same pressure. The rig-less procedure only needed a wireline and pump unit, finishing in less than a day and allowing the well to return to production quickly. This method saved 25% in costs compared to coil tubing applications. Importantly, this new technique greatly reduces the carbon footprint of acid stimulation. It cut CO2 emissions by 69% compared to coil tubing applications, showing significant environmental benefits.