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  • Mudlogger

  • Mudlogger



As a Mudlogger, you will use your geological expertise to gather, process and monitor information for oil drilling activities.

Also known as

  • Mudlogging Geologist
  • Mudlogging Technician

Work Activities

As a Mudlogger, you will use your geological expertise to gather, process and monitor information for oil drilling activities.

Your data will help to influence the most important decisions about where to start drilling.

You will use a range of techniques to collect this data, which include:

  • collecting oil samples
  • using chromatographs
  • using binocular microscopes
  • using ultraviolet fluorescence
  • using thin selection analysis

Once you have the data, you will write a specialist report on the samples that have been taken. This will indicate to Oil Drillers whether the site is safe to use, its efficiency and how much it will cost to drill in that area. You might work with other Mudloggers and Geologists to do this.

You may also look for any signs of danger, as you will be collecting this data regularly. If there any signs of danger, then you will need to make sure that everyone is notified immediately.

Your other duties may include:

  • completing onsite maintenance
  • carrying out health and safety checks
  • predicting dangerous or harmful situations

Being able to read, write and speak Welsh may be an advantage when you’re looking for work in Wales.

Personal Qualities and Skills

To become a Mudlogger, you need:

  • to like writing reports
  • to be prepared to learn and follow safety procedures, as safety is very important
  • good practical skills
  • to be able to tolerate harsh weather, and not mind being away from home for long periods
  • a good head for heights
  • good communication and written skills
  • to enjoy working as part of a team

Pay and Opportunities


The pay rates given below are approximate.

  • Starting: £29,500 - £33,500
  • With experience: £36,000 - £43,000
  • Senior Mudloggers earn £44,500

Hours of work

Mudloggers work 12-hour shifts. You normally spend two or three weeks offshore at work and two or three weeks resting onshore.

Where could I work?

Employers are drilling contractors employed by oil companies.

Opportunities for Mudloggers occur in drilling locations around the UK.

Opportunities for experienced Mudloggers occur in other countries where oil and gas is extracted throughout the world.

Where are vacancies advertised?

Vacancies are advertised in local/national newspapers, trade industry publications, at Jobcentre Plus and on the Find a Job website.

Vacancies can also be found through specialist engineering recruitment agencies, internet job boards and the websites of professional engineering bodies.

Entry Routes and Training

Entry routes

For most offshore jobs in the UK, you need to be at least 18 years of age.

All applicants have to pass a medical examination that may include a drugs test. Your colour vision may also be tested.

You will also need a degree to become a Mudlogger. Useful degrees include:

  • geology
  • environmental geoscience
  • engineering
  • geochemistry
  • chemistry
  • physics

A great way to get into this career is through an internship. Take a look at our information article 'Internships', for more details.


All offshore employees must undertake an offshore survival course, which includes safety, survival and dealing with fires.

OPITO (The Oil & Gas Academy) provides a list of centres that run these courses. You will need to contact the individual course provider to find out the cost.

Training is given on the job and may be combined with short courses taken while you are on shore leave.

If you would like some more training, then NExT Training offer a course in mudlogging operations. You will learn some theory, as well as completing some hands-on practical learning workshops. The units you could be studying include:

  • introduction to geology and sedimentology
  • geological phenomena and drilling problems
  • sensors, signals, and systems
  • understanding gas detection
  • degassing processes and technologies
  • types of gas analysis
  • mudlogging and added value

Other courses could be available in your area.

Work Experience

Previous experience working as a Geologist or working in the oil drilling industry would be really useful for this career.


For entry to a degree course, the usual minimum requirement is:

  • 2/3 A levels
  • GCSEs at grade C/4 or above in your A level subjects
  • a further 2/3 GCSEs at grade C/4 and above, including English and maths

Alternatives to A levels include BTEC level 3 qualifications and the International Baccalaureate Diploma.

Further Information


Tel: 01224 787830



Careers Wales - Welsh Apprenticeships

Tel: 0800 028 4844


NExT Training

Oil & Gas Training and Competency Development


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