Expression of Interest - Wells Engineer

About us

Worley is a global company of energy, chemicals and resources experts headquartered in Australia. We partner with our customers to deliver projects and create value across the life of their assets. We specialize in consulting, engineering, procurement and construction across the project lifecycle, with services extending through to operations and decommissioning. Leveraging extensive experience and AI-enabled delivery, we support customers in navigating complexity as they meet today's needs and transition to more sustainable solutions.

Responsibilities Include:

Technical Leadership
•    Develop geothermal well concepts, design bases, functional requirements and well delivery strategies for production, injection, monitoring and make-up wells.
•    Prepare and assure well designs, including casing and cementing programmes, tubular selection, wellhead and tree specifications, completion design, drilling fluids, directional plans and barrier philosophies.
•    Define design loads and operating envelopes considering pressure, temperature, thermal cycling, corrosive fluids, scaling, gas content, geological uncertainty and anticipated well life.
•    Develop drilling, completion, testing, stimulation, workover, intervention, integrity management and abandonment programmes.
•    Undertake or review casing design, hydraulics, torque and drag, well control, cementing, thermal stress, materials selection and well integrity calculations.
•    Specify well testing, injectivity and productivity testing, pressure-temperature surveys, production logging, fluid sampling and well clean-up requirements.
•    Integrate geological, geophysical, geomechanical, reservoir, geochemical and drilling information into well design and delivery decisions.
•    Provide well performance and operating inputs to reservoir, steamfield, gathering-system and power-plant design.
•    Lead or contribute to well risk assessments, HAZID, HAZOP, DWOP, peer reviews, technical assurance reviews and design-stage gate reviews.
•    Ensure that well designs comply with applicable legislation, recognised industry standards, client requirements and good international geothermal and petroleum industry practice.
Project Delivery
•    Act as the client’s wells engineering focal point across FEED, detailed design, EPC/EPCM, Owner’s Engineer and drilling-contractor interfaces.
•    Prepare and review well engineering philosophies, design criteria, technical specifications, scopes of work, calculations, drawings, drilling programmes and contractor deliverables.
•    Review drilling contractor, rig, wellhead, casing, cementing, directional drilling, logging, testing and specialist service tenders.
•    Support technical bid evaluations, contractor selection, procurement recommendations and clarification of technical deviations.
•    Develop well cost estimates, basis of estimates, drilling schedules, material take-offs, equipment lists and well delivery risk registers.
•    Monitor contractor performance, design changes, non-conformances and technical queries, ensuring that risks are appropriately assessed and controlled.
•    Support rig selection and acceptance, equipment readiness reviews, drilling start-up, wellsite operations, testing, commissioning and handover where required.
•    Review daily drilling reports, operational performance, well incidents and lessons learned, and recommend corrective or optimisation measures.
•    Coordinate interfaces between wells, subsurface, reservoir, geoscience, geochemistry, process, mechanical, piping, civil, electrical, instrumentation, HSE and project controls disciplines.
•    Support due diligence, independent technical review, investment decisions and lender or investor assurance for geothermal developments.
•    Communicate complex well risks and design decisions clearly to clients, project teams, contractors and non-technical stakeholders.
•    Mentor junior engineers and contribute to technical quality, knowledge sharing, continuous improvement and business development.

Knowledge and experience will include the following: 
•    Typically 8+ years of relevant wells, drilling or completion engineering experience, including substantial experience associated with geothermal, high-temperature, petroleum or similarly demanding well environments.
•    Demonstrable experience developing and assuring well designs through feasibility, concept selection, FEED and detailed design.
•    Practical knowledge of geothermal production and injection wells, including high-temperature drilling, lost circulation, formation damage, thermal cycling, corrosive fluids, scaling and well integrity risks.
•    Experience in casing and tubing design, cementing, drilling hydraulics, well control, drilling fluids, directional drilling, wellheads, completions, well testing, stimulation, workover and abandonment.
•    Experience preparing drilling and completion programmes, technical specifications, scopes of work, cost estimates, schedules and well delivery risk assessments.
•    Experience reviewing drilling contractor and specialist service-provider proposals, technical deviations, procedures and operational performance.
•    Working knowledge of drilling rigs, pressure-control equipment, wellhead systems, tubulars, cementing services, directional drilling, logging, testing and completion equipment.
•    Experience supporting drilling operations, wellsite activities, equipment readiness, operational troubleshooting or post-well performance review.
•    Familiarity with recognised well engineering software for casing design, hydraulics, torque and drag, cementing, directional planning and cost or schedule analysis.
•    Competence in interpreting geological, geomechanical, reservoir, pressure, temperature, drilling and well-test information for well design purposes.
•    Understanding of well integrity management, barrier verification, management of change, technical assurance and lifecycle well risk management.
•    Knowledge of applicable geothermal and wells-related legislation, standards, recommended practices, HSE requirements and quality-management processes.
•    Experience working within consultancy, operator, drilling contractor, EPC/EPCM, PMC or Owner’s Engineer environments.
•    Strong technical writing, analytical, client-facing communication and multidisciplinary coordination skills.
•    Willingness to travel and undertake office, vendor, rig-site and field assignments as required.
Desirable
•    Experience with both conventional hydrothermal and enhanced geothermal system developments.
•    Experience designing or delivering high-temperature, corrosive or deep geothermal wells.
•    Knowledge of well stimulation, injectivity enhancement, induced-seismicity interfaces and geomechanical risk management.
•    Experience with geothermal wellhead, gathering-system and power-plant interfaces.
•    Experience undertaking independent technical review, due diligence or lender’s technical advisory assignments.
•    Experience supporting bids, proposals, workshare arrangements and business development.
•    Previous responsibility for mentoring or supervising wells engineering personnel.
Qualifications:
•    Bachelor’s degree in petroleum, drilling, mechanical, chemical or geological engineering, or a closely related discipline.
•    Postgraduate study or specialist training in well engineering, drilling, geothermal engineering or a related field is desirable.
•    Chartered Engineer, Professional Engineer or equivalent professional registration is desirable.
•    Recognised well-control certification appropriate to the role is desirable, particularly where operational or wellsite support is required.
•    Relevant training in well integrity, barrier management, HAZID/HAZOP, drilling risk assessment or operational safety is advantageous. 
Personal Attributes
•    Strong engineering judgement with a practical and risk-based approach to well design and delivery.
•    Clear commitment to process safety, well integrity, quality and environmental performance.
•    Commercially aware, client focused and capable of balancing technical, safety, cost and schedule considerations.
•    Able to lead technical discussions and influence clients, contractors and multidisciplinary teams.
•    Collaborative, proactive and effective in resolving complex technical and operational issues.
•    Strong written communication, presentation and stakeholder-management skills.
•    Commitment to innovation, knowledge sharing and continuous improvement.

Moving forward together

We want our people to be energized and empowered to drive sustainable impact. So, our focus is on a values-inspired culture that unlocks brilliance through belonging, connection and innovation. We're building a diverse, inclusive and respectful workplace. Creating a space where everyone feels they belong, can be themselves, and are heard.

And we're not just talking about it; we're doing it. We're reskilling our people, leveraging transferable skills, and supporting the transition of our workforce to become experts in today's low carbon energy infrastructure and technology. Whatever your ambition, there's a path for you here.

And there's no barrier to your potential career success. Join us to broaden your horizons, explore diverse opportunities, and be part of delivering sustainable change.