WELCOME TO THE MAY 2026
TD TOOLS TECHNOLOGY UPDATE
MAY 2026
UltraSlim 3 Acid Stimulation
A Case Study
Acid stimulations are very effective and common treatments to help improve communication between the well and the reservoir. Directing the power of the acid, under pressure, directly into the producing zone can provide greater effectiveness to a widely accepted treatment process. Recently we had an opportunity to run our UltraSlim 3 tool for an acid stimulation in a well that had lower than anticipated injectivity. Drilling fluid damage was suspected as the cause. This month's technology update looks at a case study for acidizing with our slimhole jetting tool.
Injectivity Test Prior to Acid Stimulation
The well for this study is a 14,000' total depth horizontal injection well drilled in 2024 with a tubing free completion and open hole in the horizontal section. From its initial completion, the well produced lower injectivity levels than anticipated due to suspected damage from overbalanced drilling mud. An acid stimulation program was created to address the near wellbore damage with a jetting tool that could inject the acid under pressure. Advanced Lines Group (ALG) provided the TD Tools UltraSlim 3 tool and technical support for the job. The UltraSlim 3 would provide pin point stimulation to the open formation, enhancing communication with the reservoir.
2-1/8" OD UltraSlim 3 Sand Jet Perforator
The program included acidizing the entire 6,000 feet of horizontal well section. Utilizing 2-3/8" coiled tubing, the BHA which included the UltraSlim 3 tool was run in hole to the maximum depth and perform a pre-job injectivity test. After the testing was complete, the acid was pumped to the tool in a stationary position for a set volume of acid and then while slowly moving up the well to the next stationary location. The treatment process alternated between fixed depth stations and slow tool movement up the well. ALG personnel were able to assist their customer and the operator in determining flow rates and circulating pressures to achieve maximum efficiency.
Sand Jet Perforator Post Job
Results of the stimulation were very positive. Over 3,200 barrels of hydrochloric acid were pumped through the Ultraslim 3 tool to perform the treatment. The acid displaced the wellbore fluid and was allowed to soak in the well. After circulating out the acid, a post job injection test was performed. Data from the two injection tests indicated that more than twice as much fluid could be injected at 1,518 psi (6.5 bpm) after the job as prior to the job (3 bpm at 1,517 psi) Thanks and congratulations to our partners at ALG on a very successful job!
Acid stimulation is also especially effective when paired with abrasive jet perforating to create perforations and treat in the same run. The acid can be injected directly into the perforation tunnel under pressure for stimulation.
For more information about slimhole intervention capabilities, contact:
Rami El-Brmawy at rami@advanced-lines.com
Ahmed Qino at sales.ksa@advanced-lines.com
Cesar Tiberio Perozo Elias at cesar@advanced-lines.com
or
Thomas Dotson at tdotson@tdtoolsinc.com
