Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow
Patent
1998-04-23
1999-11-02
Bagnell, David J.
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Measuring or indicating drilling fluid rate of flow
7315221, 7315222, E21B 4710, E21B 2108
Patent
active
059752190
ABSTRACT:
A well drilling system for drilling with gaseous drilling fluid, particularly natural gas, in a closed circulation path including an enclosure or bell nipple mounted on a wellhead between the wellbore and a rotary control head for the drillstem. The enclosure redirects the flow of cuttings laden gaseous drilling fluid being circulated out of the well and includes a plurality of fire extinguishing fluid injection nozzles arranged to inhibit or extinguish fire within the enclosure and the rotary control head. Drill cuttings are separated from the gaseous drilling fluid in a pressure vessel which includes separator baffles and a drill cuttings port and valve arrangement for dumping samples and substantial quantities of drill cuttings collected within the pressure vessel during operation of the system. The enclosure and fire extinguishing system may be used in conjunction with operations using conventional liquid drilling fluids and conventional liquid-solids separation equipment. Methods for monitoring pressure surges in the wellbore to control or minimize deviation from a predetermined pressure condition included monitoring fluid flow rate and pressures of drilling fluid flowing into and from the well and controlling the rate of insertion of a drillstem into the well to minimize pressure surges.
REFERENCES:
patent: 1847864 (1932-03-01), Cross
patent: 3417830 (1968-12-01), Nichols
patent: 3729986 (1973-05-01), Leonard
patent: 3942594 (1976-03-01), Smith et al.
patent: 4316506 (1982-02-01), Poole
patent: 4363357 (1982-12-01), Hunter
patent: 4430892 (1984-02-01), Owings
patent: 4553429 (1985-11-01), Evans et al.
patent: 4840061 (1989-06-01), Peltier
patent: 4899827 (1990-02-01), Poole
patent: 5080182 (1992-01-01), Thompson
"Electronic pressure Detection Improves Drilling Operations," Condon, Williams S. et al. World Oil, Mar. 1996.
Williams Tool Co., Inc. product data, Rotating Blowout Preventer Systems, (date unknown.).
"Underbalanced Drilling With Air Offers Many Pluses", Shale, Les, Oil & Gas Journal, pp. 33-39, Jun. 26, 1995.
"Applications widening for rotating control heads", Hannegan, Don, Drilling Contractor, pp. 17-19, Jul. 1996.
"Rotating control head applications increasing", Bourgoyne, Jr., Adam T., Louisiana State University, Oil and Gas Journal, Oct. 9, 1995.
"Rotating preventers: Technology for better well control", Tangedahl, Michael J.; Stone, Charles R. (Rick), World Oil, pp. 63-64, 66, Oct. 1992.
"Properly designed underbalanced drilling fluids can limit formation damage", Churcher, P.L.; Yurkiw, Fred J.; Bietz, Ron F., Bennion, D. Brant; pp. 50-56', Oil & Gas Journal, Apr. 29, 1996.
"Monitoring downhole pressures and flow rates critical for underbalanced drilling", Butler, S.D.; Rashid, A.U.; Teichrob, R.R., Oil & Gas Journal, pp. 31-39, Sep. 16, 1996.
"Air and Gas Drilling", Nicolson, K.M., Standard Oil Company of California publication, pp. 149-155, date unknown.
Drilling applications expand snubbing unit use, Lagendyk, R.; Loring, G. and Aasen, J., pp. 37-44, World Oil, May 1996.
Strong growth projected for underbalanced drilling, Duda, John R., Oil & Gas Journal Special, pp. 67-77, Sep. 23, 1996.
Recent Advances in Underbalanced Horizontal Drilling, Yee, Stewart; Comeaus, B. and Smith, R., Sperry-Sun Drilling Services, pp. 1-7, 9 Figures, copyright, 1995.
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