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Elements and Performance Criteria

1. Plan and prepare to assist coiled tubing
   • Obtain, interpret and confirm work requirements
   • Access, interpret and apply documentation required to assist coil tube drilling operations and confirm work activity is compliant
   • Identify and minimise environmental issues and potential hazards, and assess and address risks within scope of own role and according to workplace procedures
   • Select and wear personal protective equipment required for work activity
   • Communicate with other personnel at site according to work requirements and confirm briefings and handover details are communicated and received
   • Check, fit and replace restraining devices on all pressure hoses as required
   • Raise alarm and report as required
2. Assist storage reel installation
   • Position crane hook to centre of storage reel
   • Hoist the storage reel over the centre of the carrier and lower into saddles
   • Lock down storage reel with retainer brackets and set tension screws
   • Install circulating equipment
3. Assist storage reel removal
   • Remove mud tank side hoses, swivel and cross over
   • Line up saddles and cut excess coil tubing on rig floor with casing cutter
   • Align saddles to remove storage reel
   • Install dog nut and chain coil
   • Open level wind box, shut off motor and lockout rig and open storage reel saddles
   • Remove lockout and prepare to pick up coil
   • Measure amount of coil cut and record remaining length
4. Assist installation of tubing snake connector
   • Prepare coil tubing ends
   • Check the o-rings for die retention are not stretched out
   • Separate two-piece tubing snake connector in middle at the threads
   • Size, install and tighten threaded half of tubing snake connector into tail end of coil tubing on the storage reel
   • Size, install and tighten threaded half of tubing snake connector into tail end of coil tubing on the injector side
   • Align tubing connector up and screw two tubing stake connector pieces together at centre treads
5. Assist handling of tubing snake connector
   • Inspect derrick and rig floor for equipment
   • Monitor workplace and communicate with driller as required while conducting slip and cut of coil
   • Run coil with tubing snake connector and confirm safe distance of injector from iron roughneck and other objects
6. Assist installation of set screw tubing dimple
   • Prepare coil tubing end with a grinder
   • Install dimple template
   • Tighten all set screws on dimple template
   • Loosen screws and remove template
   • Deepen template indents with a drill to dimple screw depth
   • Inspect tubing dimple seals
   • Install dimple set screws
7. Assist bottom hole assembly operations
   • Place float on bit and install bit sub onto bit
   • Stab drill collar in bit sub and make up drill collar into bit sub
   • Pick up sub and position where needed for stabbing into stump
   • Guide driller stabbing the dimple into the bottom hole assembly on the stump and confirm dimple is lined up to prevent from cross threading
   • Apply make-up tong to dimple while making up bottom hole assembly
   • Apply breakout tong to dimple and make up tong to BHA and torque to specifications
8. Assist tripping in with coil tubing
   • Confirm the lube tube is down and air bag inflated on flow T
   • Confirm arch pin is retracted while tripping in and free movement of the arch
   • Grease and inspect injector as per industry standards
9. Assist tripping out with coil tubing
   • Verify level wind is lined up ready to trip out
   • Check the air bag on flow T is still inflated
   • Verify level wind continuously stays in with coil while tripping out
   • Assist lifting the lube tube when bottom hole assembly reaches 75 metres prior to pulling out of hole
10. Assist slipping and cutting of coil tubing-grinder/rod cutter
    • Place tubing dimple at the desired working height
    • Place the hole cover in position
    • Removing tubing dimple
    • Run coil tubing through table to acceptable height while taking precautions to reduce stress on coil
    • Cut coil tubing with grinder/rod cutter
    • Remove with double wrapping sling and wire line
    • Lay down through v door.
    • Measure length cut off to keep accurate length

Performance Evidence

The candidate must demonstrate the ability to complete the tasks outlined in the elements, performance criteria and foundation skills of this unit, including evidence of the ability to:

assist coiled tube drilling on at least two occasions, including:

using the following equipment:

coil tubing (diameter 1,200 – 2,200 metres)

storage reel

mud motor

dop drive

injector

level wind

in-coder

storage reel

spool coil

tubing snake connector

tubing dimple

saddles

lube tube

interpreting information from the weight indicator

measuring line string components and calculating hole depth

disassembling, describing the function of components, inspecting components, replacing unserviceable parts and reassembling a bottom hole assembly.

During the above, the candidate must:

locate and apply documentation, policies and procedures required to assist coiled tube drilling

implement the requirements, procedures and techniques for assisting coil tube drilling, including:

keeping work area clean

selecting and wearing required protective clothing and equipment

conducting pre-operational checks

reporting immediately any malfunction or equipment failure

work with others to undertake and complete conducting of coiled tubing that meets required outcomes, including:

organising work activities to meet all task requirements

communicating with others to receive and clarify work instructions

reporting regularly to and work as directed by the driller or derrickman.

communicating the hazards of cuttings in the return air stream to all crew members.

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Knowledge Evidence

The candidate must be able to demonstrate knowledge to complete the tasks outlined in the elements, performance criteria and foundation skills of this unit, including knowledge of:

key policies, procedures and established requirements for assisting coiled tube drilling, including those for:

work health and safety

emergencies

identifying hazards relevant to coiled tube drilling

environmental requirements

housekeeping

the critical need to hoist storage reel over the centre of the carrier correctly

the methods required to limit the contamination of samples/cuttings/returns

correct bit selection for different types of drilling and different ground conditions

identifying problems related to inaccurate measurement of bits and other related components

the importance of monitoring the hole for returns/cutting/sample quantity

the role that blockages play in affecting sample quality

the critical need for restraining devices to be fitted to all pressure delivery hoses and sample delivery hoses (if used), the devices available and their methods of attachment

the importance of checking gauges and monitoring pressures, flow rates and temperatures.

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