WATERJETTING: A NEW DRILLING TECHNIQUE IN COALBED METHANE RESERVOIRS

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Title: WATERJETTING: A NEW DRILLING TECHNIQUE IN COALBED METHANE RESERVOIRS
Author: Funmilayo, Gbenga M.
Abstract: WATERJETTING : A NEW DRILLING TECHNIQUE IN COALBED METHANE RESERVOIRS Applications of waterjeting to drill horizontal wells for the purpose of degassing coalbeds prior to mining operations and for creating rock -bolts in coalbeds , have long been established . The closest application of waterjet technology in oil and gas industry has been in the development of jet -assisted drill bits . This dissertation investigates the use of high pressure waterjet technology for drilling horizontal wells in coalbed methane reservoirs . Horizontal Well technology has been in existence for many years . It has found successful applications in both conventional and unconventional reservoirs . The major difference between the conventional horizontal well technology and the proposed waterjet horizontal well technology is the use of waterjet to drill , as opposed to a bit . Secondly , the components of their drillstrings are different . This research aims at investigating the use of high pressure waterjet technology as a new and a more cost effective technique to drill horizontal wells in coalbed methane reservoirs . The ability of high pressure hose to replace the conventional metallic drill pipe will be investigated . The use of a nozzle to drill horizontal wells in coalbed methane reservoirs , as opposed to a bit will also be investigated . Optimization of tool (nozzle ) for best drilling practices will be a major part of the field trials . The various factors that control the direction of hose and nozzle , during drilling operations , will form part of the investigation . Finally , sensitivity studies will be carried out to determine the significance of all the variables that contribute to the impact forcethe force from jets of water that cuts the rocks (coalbeds ) .
URI: http : / /hdl .handle .net /2346 /23333
Date: 2010-08

Citation

WATERJETTING: A NEW DRILLING TECHNIQUE IN COALBED METHANE RESERVOIRS. Texas Tech University. Available electronically from http : / /hdl .handle .net /2346 /23333 .

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