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 the carrying out of well control and blow out prevention

implementation of appropriate procedures and techniques for the safe, effective and efficient well control and blow out prevention

working with others to plan, prepare and conduct well control and blow out prevention

provision of clear and timely instruction and supervision by the individual of those involved in carrying out of well control and blow out prevention

evidence of the consistent successful well control and blow out prevention

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.

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.

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.

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

consistently achieving the required outcomes

first hand testimonial evidence of the candidate's:

working with others to plan, prepare and conduct well control and blow out prevention

provision of clear and timely instruction and supervision by the individual of those involved in the conduct of the well control and blow out prevention

Guidance information for assessment

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

Required skills

Specific skills are required to achieve the performance criteria in this unit, particularly for the application in the various circumstances in which this unit may be applied. This includes the ability to carry out the following, as required, to carry out well control and blow out prevention:

apply legislative, organisation and site requirements and procedures

work in a team

take measurements such as:

penetration rate

circulating pressure

rotary torque

active surface volume

frequency

pump pressure

make calculations and estimations such as:

pressure

density

volume

height

velocity

length

weight

interpret gauges, graphs

detect kick warning signs and indicators

complete trip sheets

complete kill sheets

Required knowledge

Specific knowledge is required to achieve the Performance Criteria of this unit, particularly its application in a variety of circumstances in which the unit may be used. This includes knowledge of the following, as required to carry out well control and blow out prevention:

risk management related to well control

well control procedures and their application

function, operation, maintenance and use of well control and auxiliary equipment

causes, effects and response to equipment failures

drilling parameters and their interpretation

measuring and testing device purpose and operation

calculations necessary for well control procedures

kick detection warnings and indications and the responses to them

kill methods and procedures

managing well control crew requirements

well control emergency drills

effects of swabbing and surging

pressure concepts and effects

formation integrity

influx parameters

safe well shut-in procedures

tripping requirements and techniques

constant bottom hole pressure method

accumulator

type, format and implementation of well control documentation

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

Hazards may include:

blow out gas to surface

ignition of gas

toxic gases

pressurised coal seam gas system

Working conditions may include:

night time operations

day time operations

hot climates

cold climates

snow

wet weather conditions

high wind

Early warning signs may be:

rate of penetration trends

drilling break

trends shown in torque/drag

Kick indicators may include:

flow from wells (pump off)

increase in flow from well (pumps on)

pit volume gain

Equipment may include:

mud system

blow out preventer

manifolds and chokes

accumulator

degassers

monitors

diverters

Well-control testing procedures may include:

to be identified

Working practices may include:

industry best practice

confirmation of shut-in

monitoring of shut-in pressures

monitoring of accumulator pressures

correct SPM to be maintained during kill

monitoring pump efficiency

individual operation

team operation

use of personal protective equipment

consideration of H2S and other toxic substances

consideration of flammables and ignition sources

maintaining continuous communication

reacting to on-site emergencies

Briefing of crew may include:

time of well shut-in

initial shut-in pressures

kill sheets

stage of kill

type of kill procedure employed

status of well control equipment

flow path for well control method

safety briefing/induction

pre-tour safety meeting

weekly safety meetings

job safety analysis (JSA)

agreed procedures including:

company

facility

client

Corrective action may include:

changing over pumps in the event of primary failure

using secondary choke in the event of primary failure

using alternate preventer in the event of primary failure

running accumulator emergency backup in case of primary failure

Operational instructions may include:

type of kill procedure to use

type of shut-in procedure to use

action to be taken in the event of approaching MAASP

monitoring pit levels

Recording and reporting documents may include:

specifications

operator's instructions

drilling program

technical information

relevant legislation

industry regulations

government requirements

daily pre-tour checklist

daily pre-drilling checklist

AP RP 53

tour sheet

tour reports and drilling logs

kill sheet

incident report form

drilling line record sheet

shut-in procedures

weekly safety meeting report

equipment damage report

Managing crew during well control incident may include:

informing subordinates of their roles and responsibilities in a well control situation

observing and reacting on the performance of subordinates that falls below acceptable levels

assessing crew performance to ensure competent handling of well control situations

communicating potential problems to the crew and taking necessary actions

instructing the crew to take up their assigned positions during well kill

allocating personnel assignments to increase the fluid density and handle the resulting increased volumes during the well kill

Communication channels may include:

2-way radio

hand signals

telephone

public address system

written work instructions

internet and intranet