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Overview
They work close to drilling operations and laboratory analysis, preparing and testing fluids, oil or geochemical samples while monitoring natural gas and identifying lithology.
In job descriptions, look for drilling fluids, sample preparation, geochemical analysis, soil or oil samples, depth-based hydrocarbon records, gas monitoring, equipment condition and safe chemical work.
Explore this occupation
Search jobsWork context
Mud loggers sit between drilling activity and geological interpretation. They prepare and test drilling-fluid, oil, soil or geochemical samples, then connect results to depth, gas readings and lithology.
Skills and specializations
Useful depth includes geology, chemistry, natural gas, sample preparation, pollutant checks, data analysis and safe chemical work. Some roles advise extraction teams or help assess operational risks around rigging and drilling equipment.
Salary context
Pay context depends on drilling-site conditions, shift coverage, laboratory responsibility, data-reporting expectations, risk exposure and whether the role only tests samples or also interprets geological signals for operations.
Career paths
Entry may come from geology, laboratory work, drilling support, geochemistry or field sampling. Development can move toward wellsite geology, drilling data analysis, laboratory coordination, mineral-extraction advice or operations safety support.
Good to know
Check whether vacancies name the drilling setting, sample types, depth logs, gas monitoring and reporting tools. A useful advert explains how laboratory findings are handed to drilling or geology teams.
Editorial note
This guide gives editorial career context for mud logger work. It is not official labour-market statistics or salary data.
Where might this occupation occur?
This occupation may occur in several kinds of economic activity. Here are some examples and other occupations that may be found in the same areas.
Support activities for petroleum and natural gas extraction
This is one example. Other occupations in this activity include geochemist, mine geologist and exploration geologist.
Explore this activityTest drilling and boring
This occupation may also occur in this activity. Other occupations there include geochemist, mine geologist and exploration geologist.
Explore this activityThese examples offer an overview but do not show every economic activity where the occupation may occur.
About this information
The selection is based on how occupations are connected to economic activities in ESCO and NACE. Only a few examples are shown to make the information easier to use. The occupations were selected because they are close in occupation area and important skills. The examples are not a ranking. They do not show where most people work, where demand is highest, or which occupation is best suited to a particular person.
Map overview
Click the map to search for mud logger jobs.
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O*NET relationships
See occupations connected to this ESCO occupation in the official O*NET–ESCO mapping. The relationship type comes from the source and is not a ranking or recommendation.
O*NET relationships: 1
Helpers--Extraction Workers
47-5081.00
Close relationship
The occupations are closely related, but the official mapping does not treat them as exact equivalents.
Open in O*NETSource and method
These relationships come from the official European Commission O*NET–ESCO crosswalk.
Relationship direction: O*NET occupation to ESCO occupation.
Several O*NET occupations can point to the same ESCO occupation, and one O*NET occupation can point to several ESCO occupations.
AltoTrail preserves the source relationship type. The order is technical and does not show which occupation is best, most relevant or recommended.
AltoTrail validates and presents the source relationships without adding ranking or recommendation semantics.
NACE Rev. 2.1
Economic activities linked to this occupation.
09.1Support activities for petroleum and natural gas extraction06Extraction of crude petroleum and natural gas43.13Test drilling and boring
Alternative labels
Occupation group
geologist (2114.1)
Source facts
| ESCO URI | http://data.europa.eu/esco/occupation/d8ff83c0-be8b-47f9-93e3-b13e261e7da5 |
|---|---|
| ESCO code | 2114.1.7 |
| ISCO group | 2114 |
| Concept type | Occupation |