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Abstract
Conventional water-jet nozzle systems have been developed and partially used in the oil and gas industry to drill horizontal sidetracks. However, this technique still presents a few shortcomings associated with tube buckling and water jet sagging. Due to these problems, the drilled hole deviates from the desired path and does not reach the target reservoir. The issue becomes more complex due to the continuously moving boundaries representing the borehole profile, which is, in turn, governed by the nozzle dynamics. A mathematical model representing the dynamics of water jet drilling confined in a borehole along with drilling mud is developed to predict the sagging phenomenon during the drilling process. The closed form solution of the governing equation is obtained for horizontal drilling in shallow formation layers. The solution shows the strong influence of nozzle vibration and the magnitude of thrust force at the nozzle tip on the profile and the diameter of drilled hole. For sidetrack drilling of greater than 400 m length, the magnitude of sagging is large enough to miss the target reservoir. Furthermore, the dril string buckles at certain magnitudes of thrust forces and penetration lengths.
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References
- Buset P, Riiber M, Eek A (2001), Jet drilling tool: Cost-effective lateral drilling technology for enhanced oil recovery. SPE 68504, SPE Coiled Tubing Roundtable, USA.
- Dickinson W, Pesavento MJ, Dickinson RW (1990), Data acquisition, analysis and control while drilling with horizontal water jet drilling systems. CIM/SPE # 90-127, Canada.
- Fair C (1998), Development of high pressure abrasive jet drilling. SPE of AIME, USA.
- Halliburton Case History (2009), Short-radius drilling technology enhances production in depleted field. Case History # HO1770.
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- Kolle JJ, Marvin MH (2000), Jet-assisted coiled tubing drilling with supercritical carbon dioxide. Proceedings of ETCE/OMAE2000 Joint Energy Conference, New Orleans, USA.
- LaPrade JD (2000), Slim hole rotary steerable shortradius horizontal drilling system. 8th International Williston Basin Horizontal Well Workshop, North Dakota, USA.
- Stoner MS (1999), Hole deviation is defined. Denver SPE Drilling Study Group Meeting, USA.
- Schiesser WE (1991), The numerical method of lines integration of partial differential equations. Academic Press, San Diego, USA.
- Tabatabaei M, Ghalambor A (2009), A new method to predict performances of horizontal and multilateral wells. IPTC Paper # 13122, Doha, Qatar.
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References
Buset P, Riiber M, Eek A (2001), Jet drilling tool: Cost-effective lateral drilling technology for enhanced oil recovery. SPE 68504, SPE Coiled Tubing Roundtable, USA.
Dickinson W, Pesavento MJ, Dickinson RW (1990), Data acquisition, analysis and control while drilling with horizontal water jet drilling systems. CIM/SPE # 90-127, Canada.
Fair C (1998), Development of high pressure abrasive jet drilling. SPE of AIME, USA.
Halliburton Case History (2009), Short-radius drilling technology enhances production in depleted field. Case History # HO1770.
Jansen JD (1993), Nonlinear dynamics of oilfield drillstrings. Ph.D Thesis, Delft University.
Kolle JJ (1998), Water and abrasive jetting, and mechanical techniques expedite hard rock drilling. Oil and Gas Journal 96(16):90-94.
Kolle JJ, Marvin MH (2000), Jet-assisted coiled tubing drilling with supercritical carbon dioxide. Proceedings of ETCE/OMAE2000 Joint Energy Conference, New Orleans, USA.
LaPrade JD (2000), Slim hole rotary steerable shortradius horizontal drilling system. 8th International Williston Basin Horizontal Well Workshop, North Dakota, USA.
Stoner MS (1999), Hole deviation is defined. Denver SPE Drilling Study Group Meeting, USA.
Schiesser WE (1991), The numerical method of lines integration of partial differential equations. Academic Press, San Diego, USA.
Tabatabaei M, Ghalambor A (2009), A new method to predict performances of horizontal and multilateral wells. IPTC Paper # 13122, Doha, Qatar.
Zhu H (2009), Development and trend of underbalanced drilling technology. Petroleum Geology and Engineering 23(2):80-82.