Abstract: The global economy is dependent on many factors in which oil/gas prices are one of the most dominating factors. The cost of drilling an oil/gas well plays a vital role in the assessment of final oil/gas prices. Any drilling difficulties and drilling time delays increases the drilling cost. In present, stuck pipe is the main culprit for drilling time delays and generating drilling problems. When formation rock swells, the inside dia of the well bore decreases and the larger parts of the drill strings get stuck. Same drastic problem occurs when a key-seat is generated while drilling a deviated well. The only solution to overcome this problem is to ream out the well bore section of small dia i.e. well bore enlargement. This short note presents a new technique for this well bore enlargement by a reamer that is basically a turbo machine operated by drilling fluid flow. This technique eliminates the limitations of conventional reamers, those does not give required results when well bore is deviated. In conventional solution the drill string is not permitted to rotate in a deviated well bore but this new proposed technique is able to provide a solution in a deviated well bore too. So this proposed technique is a time savior, money savior and easy to establish.
Title: TURBO-REAMER FOR WELL BORE ENLARGEMENT AND HEALING KEY-SEAT PROBLEMS IN A DIRECTIONAL OR HORIZONTAL OIL/GAS WELL WHERE DRILL STRING ROTATION IS NOT POSSIBLE
Author: Ritesh Soni
International Journal of Mechanical and Industrial Technology,
ISSN 2348-7593 (Online)
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