Wells – Processes – Dissolving or preventing formation of solid oil deposit
Patent
1996-11-06
1999-03-16
Neuder, William
Wells
Processes
Dissolving or preventing formation of solid oil deposit
166307, 166312, E21B 4328
Patent
active
058818138
ABSTRACT:
A method is provided for improving the effectiveness of cleaning up wells in a subterranean formation. The treatment is made more effective by first treating the well with a clean-up fluid that enzymatically degrades residual polymeric viscosifiers followed by removing solids contained in drill-in fluids.
REFERENCES:
patent: 2602778 (1952-07-01), Snyder et al.
patent: 2681704 (1954-06-01), Menaul
patent: 2801218 (1957-07-01), Menaul
patent: 3044550 (1962-07-01), Eilers
patent: 3684710 (1972-08-01), Cayle et al.
patent: 4119546 (1978-10-01), Wernau
patent: 4157116 (1979-06-01), Coulter
patent: 4160483 (1979-07-01), Thomas et al.
patent: 4342866 (1982-08-01), Kang et al.
patent: 4343363 (1982-08-01), Norton et al.
patent: 4410625 (1983-10-01), Cadmus
patent: 4479543 (1984-10-01), Kalfayan et al.
patent: 4502967 (1985-03-01), Conway
patent: 4514309 (1985-04-01), Wadhwa
patent: 4609475 (1986-09-01), Hanlon et al.
patent: 4665985 (1987-05-01), Berrod et al.
patent: 4690891 (1987-09-01), Hou et al.
patent: 4713449 (1987-12-01), Vanderslice et al.
patent: 4809783 (1989-03-01), Hollenbeck et al.
patent: 4886746 (1989-12-01), Cadmus et al.
patent: 4928763 (1990-05-01), Falk
patent: 4996153 (1991-02-01), Cadmus et al.
patent: 5032297 (1991-07-01), Williamson et al.
patent: 5067566 (1991-11-01), Dawson
patent: 5103905 (1992-04-01), Brannon et al.
patent: 5126051 (1992-06-01), Shell et al.
patent: 5165477 (1992-11-01), Shell et al.
patent: 5201370 (1993-04-01), Tjon-Joe-Pin
patent: 5224544 (1993-07-01), Tjon-Joe-Pin et al.
patent: 5226479 (1993-07-01), Gupta et al.
patent: 5247995 (1993-09-01), Tjon-Joe-Pin et al.
patent: 5421412 (1995-06-01), Kelly et al.
patent: 5441109 (1995-08-01), Gupta et al.
patent: 5447197 (1995-09-01), Rae et al.
patent: 5562160 (1996-10-01), Brannon et al.
patent: 5566759 (1996-10-01), Tjon-Joe-Pin et al.
Beall et al., "Evaluation of a New Technique for Removing Horizontal Wellbore Damage Attributable to Drill-in Filter Cake," SPE 3429, Oct. 6-9, 1996.
Borman, "Bacteria That Flourish Above 100.degree. C Could Benefit Industrial Processing," C&EN--Science/Technology, 31-34, Nov. 4, 1991.
Brannon and Tjon-Joe-Pin, "Application of Polymeric Damage Removal Treatment Results in Multi-Fold Well Productivity Improvement: A Case Study," SPE 29822, 491-501, Mar. 11-14, 1995.
Brannon and Tjon-Joe-Pin, "Biotechnological Breakthrough Improves Performance of Moderate to High-Temperature Fracturing Applications," SPE 28513, 513-530, Sep. 25-28, 1994.
Burnett, "Using a Physical Wellbore Model to Study Formation Damage Problems in Well Completions," SPE 27393, 495-504, Feb. 7-10, 1994.
Cadmus and Slodki, "Bacterial Degradation of Xanthan Gum," Industrial Polysaccharides: Genetic Engineering, Structure/Property Relations and Applications edited by M. Yalpani, 101-107, 1987.
Cadmus and Slodki, "Enzymic Breakage of Xanthan Gum Solution Viscosity in the Presence of Salts," Developments in Industrial Microbiology, 26:281-289, Aug. 11-17, 1984.
Hodge et al., "Evaluation and Selection of Drill-in Fluid Candidates to Minimize Formation Damage," SPE 31082, 101-115, Feb. 14-15, 1996.
Jeanes, "Applications of Extracellular Microbial Polysaccharide-Polyelectrolytes: Review of Literature, Including Patents," J. Polymer Sci.: Symposium No. 45, 209-227, 1974.
Kelly and Brown, "Enzymes From High-Temperature Microorganisms," Current Opinion in Biotechnology, 4:188-192, 1993.
LeBlanc, "Limiting, Treating Formation Damage in Horizontal, Extended Reach Wells," Offshore, 56-61, Jun. 1996.
McLarty et al., "Overview of Offshore Horizontal Drilling/Completion Projects in Unconsolidated Sandstones in the Gulf of Mexico," OTC 7352, 861-868, May 3-6, 1993.
Ryan et al., "Mud Clean-Up in Horizontal Wells: A Major Joint Industry Study," SPE 30528, 801-810, Oct. 22-25, 1995.
Slodki and Cadmus, "Production and Stability of Xanthan Gums; Xanthanases and Their Applicability," Microbes and Oil Recovery vol. 1, International Bioresources Journal, 190-199, 1985.
Cadmus et al., "High-Temperature, Salt-Tolerant Xanthanase," Journal of Industrial Microbiology, 4:127-133, 1993.
Cadmus et al., "Biodegradation of Xanthan Gum by Bacillus sp.," Applied and Environmental Microbiology, 5-11, 1982.
Ahlgren, "Characterization of Xanthan Gum Degrading Enzymes from a Heat-stable, Salt-tolerant Bacterial Consortium," in Microbial Enhancement of Oil Recovery: Recent Advances, edited by Premuzic and Woodhead; published by Elsevier: Amsterdam, pp. 55-63, 1993.
Ahlgren, "Enzymatic Hydrolysis of Xanthan Gum at Elevated Temperatures and Salt Concentrations," in Gas, Oil and Environmental Biotechnology VI, edited by Srivastava et al., published by Institute of Gas Technology: Des Plaines, pp. 245-253, 1995.
Ahlgren, "Purification and Characterization of a Pyruvated-Mannose-Specific Xanthan Lyase from Heat-Stable, Salt-Tolerant Bacteria," Applied and Environmental Microbiology, 57(9):2523-2528, Sep. 1991.
Ahlgren, "Purification and Properties of a Xanthan Depolymerase from a Heat-Stable Salt-Tolerant Bacterial Consortium," Journal of Industrial Microbiology, 12:87-92, 1993.
International Search Report, Feb. 18, 1998.
Beall Brian B
Brannon Harold D.
Tjon-Joe-Pin Robert M.
BJ Services Company
Neuder William
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