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Drill cuttings[1] are broken bits of solid material removed from a borehole drilled by rotary, percussion, or auger methods and brought to the surface in the drilling mud. Boreholes drilled in this way include oil or gas wells, water wells, and holes drilled for geotechnical investigations or mineral exploration.[2]
The drill cuttings are commonly examined to make a record (a well log) of the subsurface materials penetrated at various depths. In the oil industry, this is often called a mud log.
Drill cuttings are produced as the rock is broken by the drill bit advancing through the rock or soil; the cuttings are usually carried to the surface by drilling fluid circulating up from the drill bit. Drill cuttings can be separated from liquid drilling fluid by shale shakers, by centrifuges, or by cyclone separators, the latter also being effective for air drilling. In cable-tool drilling, the drill cuttings are periodically bailed out of the bottom of the hole. In auger drilling, cuttings are carried to the surface on the auger flights.
One drilling method that does not produce drill cuttings is core drilling, which instead produces solid cylinders of rock or soil.
^http://www.glossary.oilfield.slb.com/Display.cfm?Term=cuttings Archived 2012-05-31 at the Wayback Machine Schlumberger: Oilfield Glossary
^Gordon, E. D.; Withington, Charles Francis; Dow, V. T. (1953). Practices and Results Obtained with Sample Collectors for Wagon-drill Cuttings. U.S. Department of the Interior, Geological Survey.
for air drilling. In cable-tool drilling, the drillcuttings are periodically bailed out of the bottom of the hole. In auger drilling, cuttings are carried...
drillcuttings while drilling is paused such as when the drilling assembly is brought in and out of the hole. The drilling fluid also keeps the drill...
Drilling is a cutting process where a drill bit is spun to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary...
of the method by which drillcuttings are removed from the cutting face of the drill and returned to surface. An automated drill rig (ADR) is an automated...
A drill bit is a cutting tool used in a drill to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes...
diameter of the excavation, is attached to the drill string and raised back towards the machine. The drillcuttings from the reamer head fall to the floor of...
machine tools, such as lathes, milling machines, drill presses, or others, are used with a sharp cutting tool to remove material to achieve a desired geometry...
borehole by examining the cuttings of rock brought to the surface by the circulating drilling medium (most commonly drilling mud). Mud logging is usually...
the cuttings. Some hand drills have been designed to retrieve cores without using auger flights to transport the cuttings up the hole. These drills typically...
separates drillcuttings from the drilling fluid before it is pumped back down the wellbore. Stand (#16) is a section of 2 or 3 joints of drill pipe connected...
A drill is a tool used for making round holes or driving fasteners. It is fitted with a bit, either a drill or driver chuck. Hand-operated types are dramatically...
reclaimer which removes the drillcuttings and maintains the proper viscosity of the fluid. Drilling fluid holds the cuttings in suspension to prevent them...
Drill bits are the cutting tools of drilling machines. They can be made in any size to order, but standards organizations have defined sets of sizes that...
rock. More data may be obtained from the mudlogger, who analyzes the drillcuttings and the rock formation thicknesses. Today, there are also unconventional...
to assist in the cleanup of a spill at sea. Equipment for receiving drillcuttings may also be installed on deck. Anchor handling tugs supply (AHTS): Similar...
wellbore. Some oil wells are drilled with air or foam as the drilling fluid. The generated rock "cuttings" are swept up by the drilling fluid as it circulates...
the cost of drilling operations, drilling fluid losses are minimized by stripping them away from the drilledcuttings before the cuttings are disposed...
technique has been used for years in the management and disposal of drillcuttings, oily sludge and other petroleum refinery wastes. The equipment employed...
outbursts based on spatial chaos theory using gas desorption index of drillcuttings". Mining Science and Technology. 21 (3): 439–443. Bibcode:2011MiSTC...
This phenomenon is used in oil exploration drilling to identify very small amounts of oil in drillcuttings and core samples. Humic acids and fulvic acids...
Gun drills (through coolant drill) are straight fluted drills which allow cutting fluid (either compressed air or a suitable liquid) to be injected through...
heavier fluid is displaced into the well. Air drilling requires a faster up hole volume as the cuttings will fall faster down the annulus when the compressors...
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