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KBUG – kelly bushing underground (drilling up in coal mines, West Virginia, Baker & Taylor drilling) KCI – potassium chloride; KD – kelly down; KMW – kill mud weight; KOEBD – gas converted to oil-equivalent at 6 million cubic feet = 1 thousand barrels; KOH – potassium hydroxide; KOP – kick-off point (directional drilling) KOP ...
Steerable motors are used to drill the kick-off point. When drilling the kick-off point be sure to avoid drilling a soft formation immediately below a hard one. In hard abrasive formations the high-side forces at kick off can cause severe bit shank wear. Ideally the kick-off point should be selected in a non-abrasive homogenous formation. [2]
Free point: The highest point at which the drill pipe is "free" or not stuck. Free-point tools are designed to measure torque and stretch in tubing, casings, and drill pipes and to provide accurate free pipe indication. A common method which involves deploying a wireline device to estimate the depth at which the pipe string is stuck.
As technology has advanced, more modern drillers have better control of the overall well. Oil well control is the management of the dangerous effects caused by the unexpected release of formation fluid, such as natural gas and/or crude oil, upon surface equipment of oil or gas drilling rigs and escaping into the atmosphere.
Backing off pipe, is an industry term which means unscrewing the pipe at a desired depth downhole. Inside Back Off or String Shot. Once the free point of a stuck pipe string is determined, the stringshot back-off service can be used to remove the free portion from the well. The string-shot is a metal rod wrapped in explosive primer cord.
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There are several kinds of underbalanced drilling. The most common are listed below. Dry air. This is also known as dusting. Here air compressors combined with a booster (which takes the head from the compressors and increases the pressure of the air, but does not increase the volume of air going down hole) are used and the only fluid injected into the well is a small amount of oil to reduce ...
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