Earth boring – well treating – and oil field chemistry – Earth boring – Contains intended gaseous phase at entry into wellbore
Reexamination Certificate
2007-04-03
2007-04-03
Tucker, Philip C. (Department: 1712)
Earth boring, well treating, and oil field chemistry
Earth boring
Contains intended gaseous phase at entry into wellbore
C507S202000, C507S103000, C507S120000, C507S112000, C507S113000, C507S114000, C507S110000, C507S138000, C507S140000, C507S141000, C507S145000, C166S309000
Reexamination Certificate
active
10313344
ABSTRACT:
Self-generating foamed fluids for circulation through a well during drilling operations and methods for circulating such self-generating foamed drilling fluids are provided for. The drilling fluid comprises an aqueous solvent, a polymer, a surfactant, a first foam generating agent, and a second foam generating agent. The first and second foam generating agents react to generate a gas within the drilling fluid and thereby to foam the drilling fluid. Preferably, the foam generating agents are selected such that they react to generate carbon dioxide. Preferably a base fluid comprising excess amounts of only one of the foam generating agents is pumped into the drill string using a hydraulic pump. The other foam generating agent then is injected in a controlled manner downstream of the circulation pump such that the drilling fluid is foamed after being pumped for circulation through the well. The novel drilling fluids preferably have a density of from about 5.8 lb/gal to about 0.83 lb/gal, and most preferably, from about 3.3 lb/gal to about 0.83 lb/gal.
REFERENCES:
patent: 3155178 (1964-11-01), Kirkpatrick et al.
patent: 3251417 (1966-05-01), Holman et al.
patent: 3297098 (1967-01-01), Elman et al.
patent: 3410344 (1968-11-01), Cornelius
patent: 3591394 (1971-07-01), Digglemann et al.
patent: 3958638 (1976-05-01), Johnston
patent: 3977470 (1976-08-01), Chang
patent: 4121674 (1978-10-01), Fischer et al.
patent: 4142909 (1979-03-01), Gaines
patent: 4219083 (1980-08-01), Richardson et al.
patent: RE30395 (1980-09-01), Wright et al.
patent: 4232741 (1980-11-01), Richardson et al.
patent: 4267887 (1981-05-01), Watanabe
patent: 4289633 (1981-09-01), Richardson et al.
patent: 4304298 (1981-12-01), Sutton
patent: 4333764 (1982-06-01), Richardson
patent: 4340427 (1982-07-01), Sutton
patent: 4367093 (1983-01-01), Burkhalter et al.
patent: 4450010 (1984-05-01), Burkhalter et al.
patent: 4565578 (1986-01-01), Sutton et al.
patent: 4624314 (1986-11-01), Clark
patent: 4692269 (1987-09-01), Kmiec et al.
patent: 4741401 (1988-05-01), Walles et al.
patent: 4813484 (1989-03-01), Hazlett
patent: 4832123 (1989-05-01), Abou-Sayed et al.
patent: 4844163 (1989-07-01), Hazlett et al.
patent: 5105884 (1992-04-01), Sydansk
patent: 5373901 (1994-12-01), Norman et al.
patent: 5495891 (1996-03-01), Sydansk
patent: 5552377 (1996-09-01), Kindred
patent: 5591699 (1997-01-01), Hodge
patent: 5613558 (1997-03-01), Dillenbeck, III
patent: 5639715 (1997-06-01), Patel
patent: 5658380 (1997-08-01), Dillenbeck, III
patent: 5706895 (1998-01-01), Sydansk
patent: 5780395 (1998-07-01), Sydansk
patent: 5789352 (1998-08-01), Carpenter et al.
patent: 5962808 (1999-10-01), Lundstrom
patent: 5990052 (1999-11-01), Harris
patent: 5996693 (1999-12-01), Heathman
patent: 6035933 (2000-03-01), Khalil et al.
patent: 6063737 (2000-05-01), Haberman et al.
patent: 6063738 (2000-05-01), Chatterji et al.
patent: 6121215 (2000-09-01), Rau
patent: 6123159 (2000-09-01), Brookey et al.
patent: 6138760 (2000-10-01), Lopez et al.
patent: 6162839 (2000-12-01), Klauck et al.
patent: 6209646 (2001-04-01), Reddy et al.
patent: 6268314 (2001-07-01), Hughes et al.
patent: 6270565 (2001-08-01), Heathman
patent: 6302209 (2001-10-01), Thompson, Sr. et al.
patent: 6715553 (2004-04-01), Reddy et al.
patent: 6722434 (2004-04-01), Reddy et al.
patent: 2001/0016561 (2001-08-01), Hayatdavoudi
patent: 2002/0061831 (2002-05-01), Kaziska et al.
patent: 2047642 (1995-11-01), None
R. Bullock et al.,New-Generation Underbalanced Drilling 4-Phase Surface Separation Technique Improves Operational Safety, Efficiency, and Data Management Capabilities, SPE/IADC 72153, Oct. 8-9, 2001.
J. Cameron et al.,The Effect of Drilling Fluid Density and Underbalanced Drilling on Formation Damage Minimization, Amoco Drilling Technology—EPTG (F95-P-84), Sep. 11, 1995.
G. Chitty et al.,Chase Studies in Underbalanced Drilling with Oxygenated Fluids, World Oil, Mar. 2000.
B. Gedge,Underbalanced Drilling Gains Acceptance in Europe and the International Arena, SPE/IADC 52833, Mar. 9-11, 1999.
D. Hannegan et al.,Technologies Manage Well Pressures, The American Oil & Gas Reporter, Sep. 2001.
D. Hannegan et al.,Underbalanced Drilling—Perceptions and Realities of Today's Technology in Offshore Applications, SPE/IADC 74448, Feb. 26-28, 2002.
A. Lage et al.,Drilling with Aerated Drilling Fluid from a Floating Unit. Part 2: Drilling the Well, SPE/IADC 71361, Sep. 30-Oct. 3, 2001.
E. Nakagawa et al.,Application of Aerated-Fluid Drilling in Deepwater, SPE/IADC 52787, Mar. 9-11, 1999.
D. Park et al.,Planning and Implementation of the Repsol-YDF-MAXUS Krisna Underbalanced Drilling Project, SPE/IADC 67689, Feb. 27-Mar. 1, 2001.
H. Santos et al.,Drilling with Aerated Fluid from a Floating Unit. Part 1: Planning, Equipment, Tests, and Rig Modifications, SPE/IADC 67748, Feb. 27-Mar. 1, 2001.
D. Velazques Cruz et al.,Underbalanced Drilling Analysis of Naturally Fractured Mexican Fields Through 2D Multiphase Flow, SPE/IADC 59054, Feb. 1-3, 2000.
T. Wilkes,Right Fluid Critical to UBD Success, The American Oil & Gas Reporter, Aug. 1999.
Underbalanced Drilling, Petroleum Technology Transfer Council, Jul. 11, 2001.
Underbalanced Drilling in Marine Environments, Petroleum Technology Transfer Council—Texas, Jul. 2002.
Untitled Powerpoint™ Slide Show, Drilling Contactor, May/Jun. 2000.
Use of Underbalanced Drilling Technology Expands, Drilling Contractor, Jan./Feb. 2001.
Newpark Drilling Fluids Webpages, Nov. 24, 2002.
M1 Drilling Fluids Manual, Chapter 21D—Air Drilling(Rev. No. A-O, Mar. 31, 1998).
Dowell Drilling Fluids Manual, Section 7—Pneumatic Drilling Fluids(Rev. Jun. 1994).
Self Generating Foam Incoporated
Tucker Philip C.
Willhelm Keith B.
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