Competency Matrix for Completion Engineering
No. |
Task |
Minimum Competence
|
Minimum Competence
|
|---|---|---|---|
| 1 | Design tubing | Describe basic design principles (burst, collapse, tension, compression that the tubing will encounter) for the anticipated pressure/temperature environment and associated expected flow or injection rates. | Design a tubular system given a set of completion, stimulation, production or injection requirements. |
| 2 | Select and design completion equipment | Discuss the need for various completion equipment components including packers, flow control devices, and subsurface safety valves. | Select the appropriate completion equipment needs for a given completion scenario and associated metallurgy. |
| 3 | Formulate perforation system and scheme | Describe the basics of perforating options including phasing, diameter, depth of penetration, and spacing. | Select an appropriate perforation scheme and delivery method (i.e. wireline vs. tubing-conveyed). |
| 4 | Determine need for and design of sand control | Differentiate between the various sand control processes such as standalone screens. gravel packs, etc. | Calculate the required screen size and gravel size for a given mobile solids sieve analysis. |
| 5 | Design an acid or other reactive fluid stimulation treatment | Differentiate between acid or other reactive fluid treatment types such as matrix treatments, fracturing treatments, and soak treatments. | Quantify the controlling factors and calculate the maximum injection rates and pressures to pump a matrix stimulation. |
| 6 | Design a hydraulic fracturing treatment | Describe basic concepts and requirements (proppants, fluids, conductivity, equipment needs, mechanical properties, rock deformation, fracture mechanics, diversion options, etc.) | Plan a hydraulic fracturing treatment incorporating appropriate treatment scheduling, pressure calculations, leakoff behaviors, diversion requirements and HHP needs. |
| 7 | Design and understand a coiled tubing operation | Describe basic concepts and requirements (nozzles, tubing hydraulics, operations, fluids, viscosities, carrying capacity, well operations, etc.) | Plan a coiled tubing operation incorporating tubing sizing, fluid selection, bit and nozzle selection, sequencing, and well control requirements. |
| 8 | Determine completion fluids | Describe the need for non-damaging completion fluids given reservoir and well properties. | Identify non-damaging completion fluids for various formations and associated mineralogies. |
| 9 | Develop a recompletion | Elaborate the definition of a recompletion and the potential need for such. | Determine the need for remedial cementing operations and other potential remedial operations that may be required for a recompletion procedure to proceed. |
| 10 | Maintain well integrity | Discuss the need to maintain wellbore integrity during completion operations to protect groundwater and honor other regulatory and safety requirements. | Explain the well life cycle and the requirements to maintain well integrity through to well abandonment and beyond. |
| 11 | Maintain regulatory compliance | Describe the expectations and need to comply with regulatory processes and how to determine those processes in a given region. | Elaborate the processes required to comply with regulatory requirements. (for example, submission of fluid compositions to regulatory bodies; PPE requirements for given operations). |
| 12 | Incorporate diagnostic tools and procedures | Identify the various diagnostic tools and procedures available for completion, stimulation and recompletion needs | Select an appropriate diagnostic tool or process for a given need. |
| 13 | Wellhead tree design | Discuss the basic needs for a wellhead and define the components. | Design a wellhead tree assembly for a given set of completion parameters. |
| 14 | Determine presence of formation damage | Identify the various types and causes of formation damage | Identify the causes of formation damage in a given well scenario and determine options to eliminate further damage |
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