Quality Assurance
Uniform Guidelines for Downhole Tool Maintenance
- New Equipment

Upon arrival of new equipment from suppliers all tools are completely disassembled and checked for quality assurance. Tool components are then crated and shipped off to undergo a process called Salt Bath Nitriding. This is a thermo chemical process in which nitrogen and carbon are diffused simultaneously into the surface of the metal. This process increases surface hardness to enhance anti-galling characteristics. This process has been utilized at Trinity Tool Rentals since 2001 and the long term results are outstanding.

Tool components that are returned from the Salt Bath process are once again visually inspected by our technicians for possible shipping damage. After these checks are made, all tool components undergo a routine full length transverse inspection. This consists of buffing and removing all particles from the surface of the equipment. Tool is then magnetized along a longitudinal field and components are checked for transverse indications. Components with indications of cracks or metal fatigue are discarded and replaced. This is followed by another visual inspection is conducted for quality assurance.

Finally components are then checked for strict tolerances on ID's, OD's o-ring seats etc. This information is documented on a micrometer sheet and recorded in each tool's individual quality manual.

Tool is then assembled and tested to 10,000 psi for 5 minutes. Upon completion of the test, the tool is painted, all documentation recorded and turned into the Quality Manager. Tool is now ready for service.
 
Uniform Guidelines for Down hole Tool Maintenance
- Tools Returning From the Field Utilized

Tools that are returned from the field used are checked for damages as they are unloaded off the trucks. Any damages found are reported to the General Manager and the Quality Manager. Tools are then fully disassembled by certified tool technician and placed for inspection. Tool components undergo a Full Length Transverse inspection by third party inspector.

Any components that show indications of metal loss, fatigue or cracks are discarded and replaced. New replacement components undergo same inspection before being utilized.

After all components have passed inspection, each is checked for strict tolerances and recorded on a micrometer sheet. This information along with an individual tool redress procedure document is completed and submitted to the Quality Manager.

Proper completion of these forms is checked by the Quality Manager for quality assurance purposes. Tool is now ready for assembly.

All elastomers used in the redress procedure are tracked and recorded within the individual tool manual. This will aid Trinity in the event that we have a recall on any elastomers or if we encounter problems on a job. Once assembled, the tool is then hydrostatically tested to 10,000 psi for 5 minutes. (Service tools are tested to 5000 psi for 5 minutes.) If tool fails hydrostatic test, it is disassembled to determine source of failure and then reassembled and re-tested until test is successful. After test is completed, tool is painted and tagged ready for use. All paperwork; inspection reports, mic sheets, redress reports and elastomer packaging is submitted to the Quality Manager for approval and recording.

All maintenance on each tool is recorded on an individual basis and tracked accordingly.
 
Uniform Guidelines for Down hole Tool Maintenance
- Tools Returning From the Field Not Utilized

Tools returned from field not utilized undergo a careful visual inspection by a certified tool technician. Any damage to tools or equipment is reported to the General Manager and also the Quality Manager.

Service tools returned not utilized undergo visual inspection and subsequent function testing that pertains to that particular tool. Any failures are reported, repaired, documented, and recorded within the individual quality manual assigned to that tool. After any necessary repairs, function tests are repeated until successfully completed successfully. Service tools are then hydrostatically tested to 5,000 psi for 5 minutes.

Setting tools returned unused are visually inspected for external damage. If none are visible, the tool is hydrostatically tested again to 10,000 psi for 5 minutes.

All hydrostatic tests are recorded within the quality manual for each individual tool. Technician performing the tests certifies that tool is once again ready for field use, completes and submits tool redress sheet along with a copy of the hydrostatic test chart to the Quality Manager for approval and proper recording of the documents. Tool is painted and tagged ready for service.
 
Uniform Guidelines for Down hole Tool Maintenance
- Shelf life of Tools

All tools inspected here at TTR carry a one year shelf life. This means if a tool sits on the shelf for one year or returns from the field not utilized during same period, its inspection expires and tool undergoes the process as if it is being returned from the field not utilized.

Wireline setting tools are tested to 10,000 psi for 5 minutes. Service tools are tested to 5,000 psi for 5 minutes.


   

 

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