Geotechnical Drilling
Services
Our own rigs and crews — truck-mounted and all-terrain.
Coastal Testing Laboratories provides professional geotechnical and environmental drilling services across Southeast Texas, utilizing our own fleet of truck-mounted and buggy rigs for flexible site access and dependable performance.
We drill for the engineering firms behind Houston’s projects. Our experienced in-house crews follow your boring plan, log every boring in the field, and deliver accurate, well-labeled samples to your lab — with consistent communication and efficient scheduling that keep your project on track.
Core Geotechnical Drilling Services
The Fleet
Our fleet is anchored by powerful Mobile Drill B59 and B60 units featuring 30-foot masts, enabling higher productivity to meet accelerated drilling schedules. Combined with our SIMCO and specialized buggy rig, we ensure efficient execution in any environment.
Mobile Drill B58
Calibrated- Year
- 2024
- Carrier
- Truck-mounted
- Rotary torque
- 17,000 ft-lb
- Pulldown / retract
- 23,300 / 35,300 lb
Mobile Drill B59
Calibrated- Year
- 2007
- Carrier
- Truck-mounted
- Rotary torque
- 13,500 ft-lb
- Pulldown / retract
- 20,000 / 28,500 lb
Mobile Drill B60
Calibrated- Year
- 2014
- Carrier
- Truck-mounted
- Rotary torque
- 19,000 ft-lb
- Pulldown / retract
- 23,300 / 35,300 lb
SIMCO 2800
Calibrated- Year
- 2014
- Carrier
- Truck-mounted
- Rotary torque
- 6,800 ft-lb
- Pulldown / retract
- 12,000 / 12,000 lb
Ardco Buggy · Mobile Drill B-56
CalibratedOur specialized buggy rig for marsh and difficult site conditions, where truck-mounted rigs can't go.
- Year
- 1976
- Carrier
- Ardco buggy (all-terrain)
Precision Sampling & Specification Compliance
We tailor our drilling operations to the exact demands of your project, strictly adhering to City, County, and TxDOT specifications alongside environmental protocols to ensure data integrity and site preservation.
Depending on the drilling method and site conditions, our crews average between 85 and 120 ft per rig per day, and can exceed that when conditions allow, accelerating project schedules and reducing field costs for our engineering partners.
Production & Partnership
Why Choose
CTL
One team, start to finish. Six decades of getting it right.
Our fleet, our crews
Four truck-mounted rigs and an all-terrain buggy, maintained in-house, so your schedule never waits on a subcontractor.
Every drilling need, covered
From SPT and Shelby tubes to TxDOT TCP and monitoring wells, one crew handles it all.
Drilled to spec
Full adherence to City, County, and TxDOT standards, with environmental protocols when the project calls for them.
A2LA Accredited
MBE Certified
ISNetworld Prequalified
DBE CertifiedReady to get a rig on site?
Send us your boring plan and schedule, and we’ll put together a proposal for the drilling.