About our Chemical Cutter
Chammas Chemical Cutter
Chammas Chemical Cutter
The chemical cutter is a downhole oilfield tool typically run on wireline that is used to cut stuck oilfield tubulars. It is a pressure actuated device that utilizes an oxidizing liquid chemical Bromine Trifluoride.
Chemical Cutter Work Process
Chemical Cutter in Action
- The chemical cutter is a mechanical/chemical pipe cutting/puncturing device that is based on the oxidation/reduction process.
- An igniter is initiated electrically or mechanically that in turn initiates the gas generator grain. The grain burns at a controlled rate increasing the pressure and temperature in the system.
- Gas pressure forces the anchor out to anchor the tool inside the pipe and prevent the tool from moving.
- Gas pressure continues to increase inside the tool, forcing the seal discs in the cylinder to rupture.
- The chemical (bromine trifluoride) is then forced through an oil/steel wool mixture, placed at the top of the severing head. The BF3 chemical reacts with the oil and ignites the steel wool.
- The combination of the chemical and reactant causes the temperature and pressure in the chamber to increase. When the pressure exceeds the hydrostatic well pressure and the strength of the piston support washer, the severing head piston moves down to expose the severing orifices. Through these orifices the activated chemical is forced at high pressure and temperature to preheat and cut the wall of the tubing at the desired position.
- After the chemical has been expelled, pressure in the chemical cutter equalizes with the hydrostatic pressure allowing the anchors to retract under the action of their respective springs, and releasing the tool from the tubing, so that it can be retrieved from the well
Chemical Cutter
Chemical Cutter Advantages
Clean Cuts
Clean cuts, eliminating the need to redress the top of the fish due to flaring, saving time and money.
No need for miling
Cutting the internal sleeve of a packer eliminates the need for milling.
No effects to adjacent pipe
Being able to cut the internal pipe with out affecting the external casing or adjacent pipe.
Compatibility
Complete compatibility with the most common firing systems in use today.
Zero residual debris
CCI cutters are fully retrievable equipment with zero residual debris.
Size Flexibility
Flexibility in size to allowing for string restrictions, and also the ability to produce custom sizes that might be needed for specific situations.
Chemical Cutter Efficiency Chart
The success rate of CCI chemical cutters is more a factor of temperature than hydrostatic pressure.
Refer to the table for guidance.
Example: If downhole temperature is 200˚ F and the hydrostatic pressure is 9000 PSI, the tool will operate at 91% efficiency.
(Chart Displays Recommended Operational Ratings Based Off Temperature and Hydrostatic Pressure Only)”
Grain Selector
The grain selector is an online software used to easily determine correct grain length for your next chemical cut. The gas grain length is based on the chemical volume, hydrostatic pressure, and downhole temperature. Tandem anchors, top centralizers, and extension spacers also factor in the final gas grain length. It is extremely important to use the correct gas grain length so the chemical cutter can function properly.
CHEMICAL CUTTER
Training Session
We offer training courses which include a live shot of the tool. Safety, logistics, and operational procedures are covered in our hands-on training class.
ADDRESS INFO:
19737 Farm to Market 359, Hempstead, TX 77445
CUSTOMER CARE:
EMAIL:
info@chammascutters.com