Application
This unit is appropriate for those working in supervisory or technical specialist roles, in coal-seam methane gas drilling operations worksites, within:
Coal mining
Drilling
Prerequisites
Not applicable.
Elements and Performance Criteria
ELEMENT | PERFORMANCE CRITERIA |
1. Manage well control strategies | 1.1. Access, interpret and apply compliance documentation relevant to the work activity 1.2. Identify hazards, and assess and manage risks associated with well control operations under varying working conditions 1.3. Calculate mud weight, pressure losses, drill stem and annular volumes, MAASP and initial and final circulating pressures 1.4. Identify interpret and respond to the early warning signs of kicks and well going under-balance while drilling 1.5. Recognise kick indicators and apply kick detection methods and responses during well control operations |
2. Assess well control equipment and report and record faults | 2.1. Identify the purpose, use and relationship between equipment, indicators, counters and detection systems to determine fitness of equipment for well control. 2.2. Identify flow paths for normal drilling operations and well control from appropriate sources 2.3. Identify and apply well-control testing procedures and principles in accordance with company/regulatory requirements 2.4. Perform primary equipment failure well shut-in procedures in accordance with company/regulatory requirements 2.5. Conform to safe working practices and operational requirements |
3 Carry out well kill operations | 2.6. Brief crew on well control procedures 2.7. Identify and apply appropriate pre-recorded information. 2.8. Check, read, interpret and record pressures and gauges and undertake corrective action 2.9. Determine and apply well kill procedures 2.10. Demonstrate correct application of trip kill sheet data and well-closure procedure when dealing with influx and shutting in a well 2.11. Calculate hydrostatic head at specific depths, and apply correct procedure when observing loss of circulation. 2.12. Perform correct tripping methods and tests in accordance with company/regulatory requirements. 2.13. Apply stripping methods in accordance with operating requirements. 2.14. Apply recording and reporting procedures in accordance with regulations and company policies/procedures 2.15. Manage and communicate with crew during well control incident |
Required Skills
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 |
Evidence Required
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. |
Range Statement
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 |
Sectors
Drilling (Oil and Gas)
Competency Field
Refer to Unit Sector(s).
Co-Requisites
Not applicable.
Employability Skills
This unit contains employability skills.
Licensing Information
Refer to Unit Descriptor.