What is a Geoprobe drill rig?
In a geotech industry ruled by rate-per-foot, Geoprobe® geotechnical drill rigs capable of swiftly sliding from rotary to automatic drop hammer, even to CPT or direct push — without having to move drill mast or machine — position you for increased production and profit.
What is a sonic drill rig?
Sonic Rigs Sonic drilling uses high-frequency, resonant energy to advance a core barrel or casing into subsurface formations. Simultaneously rotating the drill string evenly distributes the energy and impact at the bit face.
Is Geoprobe direct push?
Geoprobe pioneered Direct Push Subsurface Sampling Technology in 1987. Geoprobe direct push machines rely on a relatively small amount of static (vehicle) weight combined with percussion as the energy for advancing a tool string.
What is rotary drilling rig?
Rotary drilling is a general method in drilling in which a string of drill pipe is hung from a derrick and turned by the engine. Rotary cutting is also used to drill small boreholes in soft rocks. For medium to hard rocks, rotary crushing is used. Ai rotary drilling is used to drill deep boreholes in rock formations.
What are the two types of drilling technique for soil?
Direct air rotary drilling and reverse air drilling are the most common types. This method penetrates the ground quickly and can penetrate hard formations easily. Air rotary drilling is good for setting monitoring wells at specified layers as well as taking good representative samples of soil at different layers.
What is direct push drilling?
Direct push technology, often referred to as DPT, uses the static weight of the rig combined with a hydraulic hammer to advance tooling or instrumentation through the subsurface. Unlike rotary, the drill cuttings are not removed from the hole.
How deep can sonic drilling go?
Sonic provides the most accurate installations of multi-point (CMT-type) wells where precise-depth installations are critical. Diameters as large as 12 inches are possible, and depths in excess of 850 feet have been reached.
How deep can a Geoprobe go?
Soil conditions determine sampling depths for Geoprobe® machines, but typically they can collect samples from depths less than 50 feet, but some of our customers regularly sample to depths of 100 feet, and a few have sampled to nearly 200 feet.
What engine is used in rotary drilling?
Steam engines provided the power to the early drill rigs. Gas and diesel engines became the norm after World War II. Recently, while diesel engines still compose the majority of power sources on rotary rigs, other types of engines also are in use; more so in the oil and gas industry than in the water well sector.
How much does a drilling rig cost?
They usually cost a minimum of US$200 million and upwards. This depends on the level of drilling & pipe handling equipment you want to have on the drill-floor (and which shipyard is building the rig).
