Optimize your well cleanout Whether the job involves lifting fill, removing scale, or spotting fluids, our CT well-cleaning processes offer practical solutions for achieving your objectives.
The patented Baker Hughes Tornado well cleanout process cleans sand beds from deviated and horizontal wells at efficiencies approaching 100%
For ultralow reservoir pressure wells, our Sand-Vac and Well-Vac systems provide specialized options for removing solids and retrieving fluids
The Baker Hughes Roto-Jet rotary jetting system is a highly effective alternative to conventional milling to disintegrate and remove scale in a single run.
Tornado Coiled Tubing Cleanout System
Recover lost production and reduce cleanout frequency
The Tornado coiled-tubing (CT) cleanout system from Baker Hughes is the most powerful, flexible, and effective CT wellbore cleanout method available. It is ideal for removing a variety of solids from any wellbore geometry and trajectory. The patented system allows flexibility in running accompanying bottomhole assemblies such as standard wash nozzles, motors and mills, or rotary jetting tools. You get an optimized cleanout, even with compacted or loosely consolidated fill such as formation fines, pebbles, and proppants.
A suite of proprietary, custom-designed downhole tools complement field-proven operating methods to maximize the Tornado system’s capabilities. These tools provide full forward-facing washing capability while penetrating fill material, and can be switched to high-rate uphole sweeping during the engineered wiper-trip procedure.
A unique solids transport simulator, based on results of nearly 10,000 flow-loop tests and correlated with thousands of successful jobs from around the world, is integrated into the Baker Hughes CIRCA modeling software. The CIRCA software maps the progress of solids accumulation along the completion on their way to the wellhead and generates an optimized cleanout solution, including required flow rates, circulation time, tool configuration, penetration, and wiper-trip speeds. Combining the power of the CIRCA software with optimized downhole tools enables Baker Hughes engineers to perform successful cleanouts that were previously impossible to complete.
The forward-facing jets break up compacted solids while running in hole. These solids typically form a fill bed along the wellbore, behind the bottomhole assembly (BHA)
The rearward-facing jets erode the fill bed while wiper-tripping out of hole, carrying the solids to surface
Applications
Removal of loose fill material such as formation fines, rocks, proppants, and perforating and milling debris
Removal of compacted solids requiring high-pressure jetting or milling such as scale
Large-diameter, highly deviated, or horizontal wellbores
Features and benefits
- CIRCA engineered circulation and wiper-trip methodology
– Boosts production while increasing the interval between cleanouts
- Uses simple cleanout fluids and smaller CT
– Reduces job costs and minimizes nitrogen and fluid volumes
- Choice of flow operated multicycle, or single-trip, ball-operated switching tool
– Provides the right tool for nearly every operational requirement
- Easy-to-apply field procedures
– Maximizes reliability and system efficiency
- Rearward-facing jets
– Decreases overall job time
– Prevents solids from compacting around the BHA and reduces the risk of stuck pipe
Roto-Jet Jetting Tool
Remove hard-scale deposits with single-pass cleaning from surface to total depth
Remove downhole deposits
The Baker Hughes Roto-Jet jetting tool economically removes downhole deposits that can impede well productivity. This unique, rotary jetting technology introduces destructive stress cycling to the deposit by accurately controlling the rotational speed of the jetting nozzle.
With each pass of the jet stream, surface cracks are briefly pressurized to induce local tensile stress in the scale. This stress cycling occurs several times each second and causes brittle scale to shatter into small particles that are easily transported to surface.
The result is single-pass cleaning from surface to total depth. Even the hardest scales, such as silicates and barium sulfate composites, can be removed with Roto-Jet technology.
In cases of significant scale accumulation, the Roto-Jet tool can be used after an initial pass with a motor and mill. While no damaging to the completion, the aggressive jetting action provides full inside-diameter cleaning, including completion jewelry profiles of varying geometry.
Stimulate production
The Roto-Jet tool enhances acid delivery to the formation, maximizing the benefits of stimulation chemicals and, ultimately, well performance. The tool’s aggressive rotary jetting action is compatible with nitrogen, many diverting agents, and all fluids, and combines with our proprietary stimulation chemical systems to aggressively wash and remove filter cake and drilling mud damage in horizontal openhole completions. In conventional completions, focused radial jets ensure acid is delivered uniformly to each perforation.
Improve performance
The rotating action of the Roto-Jet tool enables it to clear a path through bridges and restrictions, providing full wellbore coverage. The jet selection is based on the fluid pump rate and completion geometry.
The Baker Hughes proprietary CIRCA™ modeling software is used to configure the tool and to optimize the choice of jet.
The software also analyzes the standoff performance of various jet profiles and determines flow rates and pressure drops through the Roto-Jet tool.
Performance can be further enhanced when the tool is combined with Baker Hughes chemical scale dissolver products. This combination of chemical attack and stress cycling maximizes scale dissolution and removal, and is exclusive to the Baker Hughes Roto-Jet treatments and technology.
In applications requiring nitrogen, an optional downhole phase separator can be incorporated in the tool string. This directs the nitrogen into the annulus above the Roto-Jet and maximizes tool performance with a pure fluid jet.
Applications
- Removal of hard deposits or other obstructions
- Stimulation of openhole, slotted, and pre-perforated liner completions
- Stimulation of gravel-pack completions through the Roto-Pulse™ process
Features and benefits
- Compatible with virtually all chemical scale dissolvers and acid systems
– Maximizes scale dissolution and fluid efficiency
- Accurate and reliable control of the jetting nozzle’s rotational speed
– Permits 360° coverage
– Achieves optimal rotation speed regardless of pump rate
– Removes downhole deposits economically
- Compatible with nitrogen
– Provides lift in the wellbore
– Returns all jetting fluid and debris to surface
- Multiple setup configurations
– Offers 90° and 45° mole configurations
– Performs effectively in a wide range of deposits and well conditions
- Powerful Baker Hughes CIRCA simulation software
– Optimizes time on location by providing accurate job design, simulation, tool setup, and safe operating guidelines.
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