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Statewide Well Surveys LLC

California · Arizona · Nevada · Western U.S.

Geophysical Well Logging Services

Statewide Well Surveys LLC provides complete geophysical well logging for water wells, monitoring wells, and engineering projects throughout the Western United States. We operate both the SDS Warrior and Robertson Geologging platforms for maximum flexibility and data quality.

Statewide Well Surveys geophysical well logging equipment at a well site
Tools & Techniques

What We Log

SWS provides complete geophysical well logging for water, monitoring, and engineering wells. Select a service category to see what it covers, what it tells you, and when it is used.

Open Hole Logging

A full suite of tools run in the open borehole before casing — electric, gamma-ray, caliper, sonic, and deviation — to characterize the formations and help identify potential water-bearing zones.

What it tells you

Formation characteristics, potential aquifer zones, formation resistivity, and borehole condition.

When to use it

After drilling and before casing, on new water, monitoring, and engineering wells.

Cased Hole Services

Logging run after casing and screen are installed — spinner, fluid, cement bond, and video — to evaluate how the completed well performs.

What it tells you

Producing zones, cement integrity, and casing and screen condition.

When to use it

On existing or newly completed wells to assess performance and integrity.

Electric & Gamma-Ray Logs

Electric logs measure formation resistivity and spontaneous potential, while Gamma Ray measures natural gamma radiation. Together, these logs provide valuable information for formation evaluation and geologic correlation.

What it tells you

Formation boundaries, lithologic changes, and resistivity characteristics that can help identify potential water-bearing intervals.

When to use it

Commonly used as a baseline dataset for open-hole formation evaluation.

Flow & Fluid Logs

Spinner flowmeter, fluid resistivity, and temperature logs evaluate fluid movement and changes within the water column of a cased well.

What it tells you

Producing or receiving zones, relative flow contribution, and changes in fluid characteristics with depth.

When to use it

To diagnose yield and design pumping or rehabilitation.

Video Survey

A downhole camera provides a direct visual inspection of casing, screen, and the water column.

What it tells you

The physical condition of the well and any obstructions or damage.

When to use it

For inspection, troubleshooting, and pre- and post-rehabilitation documentation — surveys can be repeated as often as a well needs.

Deliverables & Documentation

Logging data is available in industry-standard LAS format where applicable, along with clear log presentations and supporting field documentation.

What it tells you

Data your engineer, geologist, or regulator can use directly.

When to use it

On every project — deliverables are included as standard.

Related Services

Explore More

Open Hole Logging→ Cased Hole Services→ Modern Digital Logging→

Ready to Schedule?

Call us directly — we typically respond the same day.

(909) 801-0262 statewidewellsurveys@gmail.com