Rotary Services
Rotary Drilling: Quality sampling and additional testing or instrumentation
Gregg Drilling maintains a large inventory of rotary drilling and coring drill rigs that when partnered with our highly experienced drillers, are able to meet a wide range of environmental drilling and geotechnical drilling site investigation and remediation needs.
Our full-time mechanics and preventative maintenance program ensure that all necessary equipment is available and operating at maximum efficiency. This commitment to quality allows us to offer the most responsive and cost effective drilling services.
Depending on your project requirements Gregg Drilling can advise you on the right drill and team to use. From small limited-access drill rigs that fit inside a building, to large truck-mounted drill rigs capable of achieving depths over 1000ft, Gregg Drilling has a full suite of choices. Support trucks accompany our rigs to all sites and provide extra equipment at no extra cost to the client.
Truck and track mounted equipment
Geotechnical sampling
Piston sampling
Pitcher barrel sampling
Wireline HQ coring and packer testing
Instrumentation installation (piezometers, inclinometers)
Vane shear, pressuremeter and SPT energy calibration testing
Gregg’s vast experience drilling throughout California and exceptional safety rating provides the confidence and trust our clients have learned to value.
Gregg constantly strives to maintain one of the highest safety ratings across California. Recently Gold Shovel Certified, Gregg is constantly improving our safety program and equipment to provide our clients the highest quality service available. Gregg’s employees have some of the most extensive safety training available and are able to work on refineries, military sites, railroads and confined spaces. Gregg Drilling Specifications
Download our equipment specifications to learn more about our services offerings.
Rotary Drilling
Click to download the Rotary Drilling Datasheet
Geotechnical Testing Services
Click to download the Geotechnical Testing Services Datasheet
CME-45 Drilling Specifications
Click to download the CME-45 Drilling Specifications Datasheet
Scorpion Limited Access Equipment
Click to download the Scorpion Limited Access Equipment Datasheet
We’re ready for you
With over 35 years experience drilling in California and surrounding states, Gregg Drilling can handle any size project. We hope to demonstrate our value through quality equipment, knowledgeable and experienced personnel and our exceptional safety standards
