← Risk register SOC 19-4043 · reviewed 2026-08-11

Geological Technicians, Except Hydrologic Technicians

6,980 US workers · median $53,350/yr · Science

EXPOSED

The modal worker splits time between rough field settings — collecting rock, soil and core samples, running downhole and surface instruments, mudlogging at active drill sites — and screen work compiling logs, plotting data and drafting reports, which is the automatable half. Automated core scanners, real-time telemetry, and ML lithology/log interpretation are already eating the description and data-reduction tasks, while the sample handling and rig-side presence stay human because there is no robot that will hike a claim block or babysit a drill floor. No license shields the role and geologists sign the deliverables, so the protection is physical, not legal.

10-year outlook: Employment stays small and roughly flat, with report-writing and data-reduction hours shrinking while field acquisition, sample handling and wellsite monitoring keep the job physically anchored.

US employment, 2021–2025-24.2%
9,2106,980 workers

Most of this decline happened after 2021 — it is not the pandemic dip.

The job count is not the verdict

This line is counted by the Bureau of Labor Statistics — the one figure on this page that isn't a judgement of ours. Headcount moves on demand, offshoring, demographics and the business cycle, and automation is one term among several, often not the loudest.

So a falling line is not evidence that AI did it, and a rising one is not evidence that it won't. Both happen in this register: some occupations resist automation and shrink anyway, others are highly automatable and keep growing.

BLS projection, 2024–2034

+1.5%

Percentage only. The projection counts a different population from the 6,980 above — it includes self-employed workers, which for this occupation is most of them, so the two headcounts are not comparable.

Exposed, but growing

AI can already do a lot of these tasks, and the BLS still expects +1.5% more of these jobs by 2034. Demand for the output is growing faster than the work is being automated away — the mechanism BLS gives for software developers, and the combination people most often misread as an error.

Different clocks. The score is what current AI could do to this work today. The projection is how many of these jobs will exist in 2034. Everything between the two — how fast employers actually adopt, whether demand grows in the meantime — is why they can point opposite ways without either being wrong.

~1,300 openings a year on average, including replacing people who leave.

One email if this score changes. Watch as many occupations as you like from the same address — no account, and nothing is sent on a schedule, only when a verdict actually moves.

Also known as — 24 job titles this covers

Titles reported by people doing this work, from the US Department of Labor's O*NET survey. If your job title is here, this page is about your work even though the name doesn't match.

TesterLocaterLocatorObserverGeologistOil ScoutGas ProverGas TesterMud LoggerOil TesterOre TesterAcid TesterField ScoutGas AnalystOil AnalystWell LoggerWell TesterChalk TesterCrude TesterField TesterLine LocatorScout LeaserGeotechnicianSeismographer

Score — 43/100 resistance

Holding it up: embodiment (15/20). Weakest point: liability shield (3/20).

Five dimensions, 0–20 each, summed. Higher means more protected. The arithmetic is shown so you can check it: 11 + 15 + 3 + 6 + 8 = 43. · Scored 2026-08-11, and re-examined when evidence accumulates rather than on a schedule.

Task resistance 11/20

Mixed — a routine tier and a judgment tier Sample prep, core description, log plotting and report compilation — roughly half the shift — are already being handled by hyperspectral core scanners and ML log-interpretation packages, but rig-side mudlogging, sample chain-of-custody, geophysical instrument setup and troubleshooting a stuck downhole tool keep it out of the single-digit band.

Embodiment 15/20

Hands-on in uncontrolled environments The job happens on drill floors, claim blocks, quarry benches and offshore rigs with H2S monitors and hardhats, hauling core boxes and running trenching and sampling gear in weather nobody controls; it sits at 15 rather than 18 because a real share of hours are spent in a core shack or trailer at a screen.

Liability shield 3/20

No licence, no signature requirement There is no license or registration to hold — the Professional Geologist stamp on the report belongs to the geologist you report to, and the 3 reflects only site-specific tickets like MSHA Part 46/48, HAZWOPER or offshore safety training that gate access to the location, not to the work itself.

Trust premium 6/20

Some relationship component Clients and regulators buy the assay results and the log, not you, though repeat crews and consultancies do keep techs who know a particular basin's stratigraphy or a specific rig's quirks and who the drillers will actually listen to.

Judgment & accountability 8/20

Meaningful discretion You make real calls on the fly — where to cut the sample interval, whether a gas show is worth flagging to the mudlogger, whether an instrument reading is a formation or a bad calibration — but the interpretation, the well decision and the resource estimate belong to the supervising geologist, which caps this at 8.

Confidence: medium · reviewed 2026-08-11 · how scoring works

What this job involves — and which parts are yours

The verdict above describes this occupation as a whole. Almost nobody does the typical version of a job — tick what's actually in your week and see how your own mix sits.

AI already does these at usable quality

These still need a person

Active moats on the surviving side: embodiment, physical-presence

How to future-proof this job

Training paths for your skill gaps: Apprenticeship.gov — industrial maintenance and millwright programs paid to train · Apprenticeship.gov — paid, employer-sponsored trade apprenticeships, searchable by trade and ZIP paid to train · MIT OpenCourseWare — circuits, systems and diagnostic method, free and ungated free · Apprenticeship.gov — electrical, HVAC, plumbing and fitting programs that pay while you learn paid to train

All 35 skills ranked by how many jobs they open →

Where this experience transfers — occupations you could move toward

Computed from U.S. Dept. of Labor O*NET skill and knowledge profiles: high overlap with what you already do, a materially higher resistance score, no large jump in required training, and no licence you would have to start a new pipeline to get. Targets that pay meaningfully less, that are themselves COOKED, or whose own headcount is falling are excluded — a move into a shrinking trade is not an escape.

Stationary Engineers and Boiler Operators EXPOSED · 64/100 · you already have ~56% of the skill profile

Skills to close: Equipment Maintenance, Repairing, Troubleshooting, Installation

Electro-Mechanical and Mechatronics Technologists and Technicians EXPOSED · 55/100 · you already have ~54% of the skill profile

Skills to close: Installation, Repairing, Troubleshooting, Equipment Maintenance

Farm Equipment Mechanics and Service Technicians SAFE · 67/100 · you already have ~53% of the skill profile

Skills to close: Equipment Maintenance, Repairing, Troubleshooting, Installation

What would move this back up — beyond any one person

The moves above are yours to make. This is the other half: what would have to change in the world for the occupation itself to score higher. None of it is in any one person's gift, but it is where the floor actually comes from. Scores here are not a one-way ratchet. Only two of the five dimensions — task resistance and embodiment — track what machines can do. The other three track law, what buyers will pay for, and who is answerable, and those move in both directions, often in response to the same pressure AI creates. If every lever below landed, this occupation would score around 54/100, still EXPOSED.

4 specific changes that would raise this score
  • already happening task resistance +3

    Task-mix shift: as ML lithology/log interpretation and automated core scanning absorb description and data-reduction work, what remains is field QA/QC — sample chain-of-custody, contamination judgment, deciding when an instrument reading is an artifact vs. real, and re-sampling calls at the rig. The occupation genuinely has a routine tier (plotting, log compiling) and a judgment tier (sample validity, rig-side anomaly calls); the second is what the job becomes.

  • plausible judgment accountability +3

    If assay-fraud enforcement (post-Sino-Forest, post-Rangold style cases) leads exchanges or the SEC to demand named, documented sign-off on the specific field sampling events feeding a resource estimate, the technician who took the sample becomes an identified accountable party in the audit trail rather than an anonymous input.

  • plausible embodiment +2

    If mineral exploration shifts further toward greenfield/brownfield drilling in terrain where drone and autonomous-rig coverage is poor (steep claim blocks, permafrost, jungle), and if mudlogging remains required onsite under state oil-and-gas commission witnessing rules rather than moving to remote operations centers, the physical share of the day rises. The counter-motion is real: Halliburton/SLB remote-ops centers already pull mudloggers off the rig floor.

  • unlikely liability shield +3

    NI 43-101 / SK-1300 (SEC Subpart 1300) sampling and QA-QC provisions currently place the attestation on the Qualified Person/licensed geologist, not the technician. A concrete raise would require a rule change making a registered geologist or certified sampling technician personally attest to chain-of-custody and field duplicate/blank insertion — for example, an ASBOG-linked technician registration tier, or a state board rule (Texas BPG, California PG) extending practice-act coverage to field sampling. Nothing like this is currently in motion; treat as unlikely.

The limit. There is no realistic route to a trust premium — buyers of geological data are mining companies and E&P operators who pay for defensible numbers, not for human hands. And the liability route is genuinely blocked: the entire regulatory architecture (NI 43-101, SK-1300, state practice acts) is built to place liability on the geologist above the technician, and no professional body is lobbying to change that. Realistic ceiling is low-to-mid 50s, driven almost entirely by task-mix shift plus terrain, and remote-operations centers are actively eroding the embodiment floor at the same time.

These are conditions, not forecasts — what would have to happen, not what will. Specific rules, cases and bills are named so you can go and check whether they exist and where they stand; verify before relying on any of them. Nothing here is legal or financial advice.

Where this work is, and what it pays there

BLS metro figures for 22 areas. The verdict above does not change by city — the rubric judges what the work involves, not where it happens — but pay and headcount do, and the national median hides a very wide range.

Most of these jobs

Houston-Pasadena-The Woodlands, TX 680 $59,630 +12%
Dallas-Fort Worth-Arlington, TX 240 $47,710 -11%
Oklahoma City, OK 200 $47,510 -11%
San Antonio-New Braunfels, TX 160 $49,280 -8%
New York-Newark-Jersey City, NY-NJ 140 $57,150 +7%
Pittsburgh, PA 80 $43,440 -19%
Raleigh-Cary, NC 80 $47,920 -10%
San Diego-Chula Vista-Carlsbad, CA 80 $82,350 +54%

Best paid

San Diego-Chula Vista-Carlsbad, CA 80 $82,350 +54%
Denver-Aurora-Centennial, CO 60 $70,280 +32%
Las Vegas-Henderson-North Las Vegas, NV 60 $62,520 +17%

Percentages are against this occupation's national median of $53,350. Counts are jobs in that metro, not vacancies. Metros where the BLS suppressed the cell are absent rather than shown as zero.

Who is actually doing this — nobody, on the record

We have no reported case of a named organisation automating this occupation. Not one deployment, not one announcement.

That is worth saying out loud next to a score of 43. The verdict above is about what the work exposes — what current AI could do to these tasks. It is not a claim that anyone has done it. For this occupation those two things have come apart completely: the capability argument is on this page, and the evidence column is empty.

Read that as a gap in the reporting we can see, not proof of absence — the dispatch runs on English-language feeds and misses plenty. If you know of a case, tell us, or add a field report from inside the job.

Quick take — do you do this job?

Has AI actually changed your work? One tap, anonymous, and the running tally is public. Nothing else is asked of you.

Self-reported and unverified — a sentiment signal, not a survey. One response per person per occupation; you can change your answer.

Field reports — what people say has changed

No field reports yet. A written account takes a paragraph rather than a tap, goes to an editor before it appears, and is the one thing on this page the rubric cannot produce on its own.

File a field report

Concrete beats general: a tool that arrived, a task that moved, a headcount decision you watched happen. Don't include anything that identifies you or your employer if that would put you at risk.

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