ELEMENT

PERFORMANCE CRITERIA

1. Plan and prepare for cable tool drilling

1.1. Access, interpret and apply compliance documentation relevant to the work activity

1.2. Obtain, confirm and apply work instructions for the allocated task

1.3. Identify, manage and report all potential hazards

1.4. Resolve coordination requirements with others at the site prior to commencing and during work activities

1.5. Raise alarm/report as required according to site procedures

2. Operate cable tool drill

2.1. Identify and use different tool/casing types, thread forms and thread make up parameters

2.2. Select appropriate bits, shoes, clamps, casing, tools and lifting devices for the expected formations

2.3. Use tool handling equipment such as spanners and chain tongs safely

2.4. Assemble tool strings according to organisation or manufacturer's procedures

2.5. Maintain correct tension on the drill line and correct stroke rate during drilling operations

2.6. Bail hole of cuttings as required to maintain satisfactory penetration rates

2.7. Control hazards associated with the use of wire rope for drilling and bailing

2.8. Measure drill string components and calculate depth of hole

2.9. Select drilling tools to maintain hole straightness

2.10. Drive and jack casing as required

2.11. Select appropriate tools to undertake fishing operations

3. Operate drill fluid system

3.1. Identify hole conditions requiring the use of drilling fluids/chemicals

3.2. Select, prepare, apply, test and monitor suitable fluids and additives

3.3. Adjust fluid level in the hole to maintain hole stability and optimise penetration rates

3.4. Dispose of drill fluids in an environmentally safe manner

4. Maintain equipment

4.1. Sharpen bits or remetal rope swivels in accordance with personal protective equipment and safety requirements

4.2. Clean and lubricate rope swivels to ensure correct operation

4.3. Check slings, drill lines and bailing lines for wear and replace as necessary using appropriate wire rope and spooling

4.4. Grease derrick sheaves regularly

4.5. Examine critical rig components such as sheaves and shackles regularly for wear or cracks

4.6. Maintain tool string components

4.7. Adjust clutch play, drive belt and jockey pulley tension as required

4.8. Perform routine maintenance to rig engine

5. Recover formation samples

5.1. Select appropriate sampling tools/methods depending on the type of formations being drilled

5.2. Obtain formation water samples as required

6. Respond to problems

6.1. Identify possible problems in equipment or processes

6.2. Determine problems needing action

6.3. Determine possible fault causes

6.4. Rectify problem using appropriate solution within area of responsibility

6.5. Follow through items initiated until final resolution has occurred

6.6. Report problems outside area of responsibility to designated person

Required skills

Specific skills are required to achieve the Performance Criteria of this unit, particularly for its application in the various circumstances in which this unit may be used. This includes the ability to carry out the following, as required to conduct cable tool drilling:

apply legislative, organisation and site requirements and procedures for conducting cable tool drilling

welding

oxy-acetylene use

Required knowledge

Specific knowledge is required to achieve the Performance Criteria of this unit, particularly for its application in the various circumstances in which this unit may be used. This includes knowledge of the following, as required to conduct cable tool drilling:

welding to dress bits, casing shoes

remetalling rope sockets

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The evidence required to demonstrate competency in this unit must be relevant to worksite operations and satisfy all of the requirements of the performance criteria, required skills and knowledge and the range statement of this unit and include evidence of the following:

knowledge of the requirements, procedures and instructions for conducting cable tool drilling

implementation of requirements, procedures and techniques for the safe, effective and efficient completion of cable tool drilling

working with others to undertake and complete the conduct of cable tool drilling that meets all of the required outcomes

consistent timely completion of cable tool drilling that safely, effectively and efficiently meets the required outcomes

Context of and specific resources for assessment

This unit must be assessed in the context of the work environment. Where personal safety or environmental damage are limiting factors, assessment may occur in a simulated environment provided it is realistic and sufficiently rigorous to cover all aspects of workplace performance, including task skills, task management skills, contingency management skills and job role environment skills.

Assessment of this competency requires typical resources normally used in a resources and infrastructure sector environment. Selection and use of resources for particular worksites may differ due to the site circumstances.

The assessment environment should not disadvantage the participant. For example, language, literacy and numeracy demands of assessment should not be greater than those required on the job.

Customisation of assessment and delivery environment to sensitively accommodate cultural diversity.

Aboriginal people and other people from a non English speaking background may have second language issues.

Where applicable, physical resources should include equipment modified for people with disabilities. Access must be provided to appropriate learning and/or assessment support when required.

Method of assessment

This unit may be assessed in a holistic way with other units of competency. The assessment strategy for this unit must verify required knowledge and skill and practical application using more than one of the following assessment methods:

written and/or oral assessment of the candidate's required knowledge

observed, documented and/or first hand testimonial evidence of the candidate's:

implementation of appropriate requirement, procedures and techniques for the safe, effective and efficient achievement of required outcomes

consistent achievement of required outcomes

first hand testimonial evidence of the candidate's:

working with others to undertake and complete the conduct of cable tool drilling

Guidance information for assessment

Consult the SkillsDMC User Guide for further information on assessment including access and equity issues.

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Relevant compliance documentation may include:

legislative, organisation and site requirements and procedures

manufacturer's guidelines and specifications

Australian standards

code of practice

Employment and workplace relations legislation

Equal Employment Opportunity and Disability Discrimination legislation

Work instructions may come from briefings, handovers, plans and work orders and may be written or verbal, formal or informal and may include:

nature and scope of tasks

specifications

quality of finished works

achieved targets

operational conditions

obtaining of required permits

site layout

out of bounds areas

worksite inspection requirements

lighting conditions

plant of equipment defects

coordination requirements or issues

contamination control requirements

environmental control requirements

barricade and signage requirements

Hazards may include:

working in proximity to drilling rig

Coordination requirements may include:

other equipment operators

maintenance personnel

supervisors

site personnel

Tool/casing types andthread forms may include:

AWW casing

slimline casing

API tool threads

goldfields tool threads

Southern Cross tool threads

Appropriate bits, shoes, clamps, casing, tools and lifting devices may include:

spudding bits

undercutting bits

star bits

chisel bits

jars

drive clamps

casing lift/drive caps

Handling equipment may include:

tool spanners

tool wrenches

slings

chain tongs

casing clamps

casing jacks

Hazards associated with the use of wire rope may include:

snags in wire rope

incorrect spooling of wire

wireline 'throws a loop'

Tools to maintain hole straightness may include:

drill stem stabilisers

torpedo bits

Tools to undertake fishing operations may include:

friction sockets

overshots

lead impression tools

wall hooks

casing spears

rope spears

rope cutter

latch jacks

fishing jars

Drilling fluids and additives may include:

water

API bentonite

native clays

various polymers

barite (barium sulfate)

dispersants

loss circulation products

Personal protective equipment may include:

welding mask/goggles

welding gloves

ear protection

eye protection

safety boots

hard hat

sunscreen

Tool string components may include:

swivel socket and mandrel

cable tool joints

cutting edges on bits

drilling jars

bailers

Sampling tools/methods may include:

sampling by bailer

sand barrel

clay barrel

chop pump

earth socket