Process for removing and preventing near-wellbore damage due to

Details Process for removing and preventing near-wellbore damage due to Process for removing and preventing near-wellbore damage due to

1993-09-21

1995-06-20

Suchfield, George A.

Wells

Processes

Separating material entering well

166303, 166304, 166312, 507 90, E21B 3700, E21B 3706, E21B 4340

Patent

active

054254221

ABSTRACT:
In accordance with the present invention, there is now provided a method for removing asphaltene deposits in a well environment such as the wellbore and near-wellbore regions, comprising the injection of deasphalted oil therein to solubilize the asphaltene deposits obstructing the well environment. More specifically, the method of the invention comprises the injection of deasphalted oil into the wellbore and the near-wellbore formation followed by a soaking period and a production period. The method of the present invention has the great advantage of readily dissolving precipitated asphaltene in a well environment without other costly treatments such as the use of solvents like xylene or toluene. Furthermore, the present method does not require the incorporation of any additives in the deasphalted oil.

REFERENCES:
patent: 1448997 (1923-03-01), Foggan
patent: 4418752 (1983-12-01), Boyer et al.
patent: 4465138 (1984-08-01), Hunt, III
patent: 4756368 (1988-07-01), Ikuta et al.
patent: 4919207 (1990-04-01), Ikuta et al.
patent: 5139088 (1992-08-01), De Boer et al.
Database WPI, Week 9133, Derwent Publications Ltd., London GB; AN 91-243962/33, Nov. 30, 1990.
Database WPI, Week 9235, Derwent Publications Ltd., London GB; AN 92-290590/35, Sep. 30, 1991.
Database WPI, Week 9228, Derwent Publications Ltd., London GB; AN 92-232593/28, Oct. 7, 1991.
Database WPI, Week 9224, Derwent Publications Ltd., London GB; AN 92-198209/24, Sep. 15, 1991.
Database WPI, Week 9205, Derwent Publications, Ltd., London GB; AN 92-039228/05, Feb. 23, 1991.
Can. J. Chem. Eng., 1985, 63, 878-885.
J. Can. Petroleum Tech., 1992, 31(4), 24-30.
Fuhr et al., Proceedings of the 4th UNITAR/UNDP International Conference on Heavy Crude and Tar Sands, Aug. 7-12, 1988, pp. 637-646, Paper No. 75.
Newberry et al. in the proceedings of the Society of Petroleum Engineers Symposium in Oklahoma City, Okla., Mar. 10-12, 1985, Paper SPE 13796.
Douglass et al. in the proceedings of the Society of Petroleum Engineers Regional Meeting in Billings, Mont., May 19-21, 1986, Paper SPE 15167.
Akbar et al. in the proceedings of the Society of Petroleum Engineers Middle East Technical Conference and Exhibiton, Manama, Bahrain, Mar. 11-14, 1989, Paper SPE 17965.
Monger et al. in the proceedings of the Society of Petroleum Engineers 63nd Annual Technical Conference and Exhibiton in Houston, Tex., Oct. 2-5, 1988, Paper SPE 18063.
Thaver et al. in the proceedings of the Society of Petroleum Engineers Internatinoal Symposium on Oil Field in Houston, Tex., Feb. 8-10, 1989, Paper SPE 18473.
Addison, in the proceedings of the Society of Petroleum Engineers Production Operations Symposium in Oklahoma City, Okla., Mar. 13-14, 1989, Paper SPE 18894.
Trbovich et al. in the proceedings of the Society of Petroleum Engineers International Symposium on Oil Field Chemistry in Anaheim, Feb. 20-22, 1991, Paper SPE 21038.
Leontaritis et al. in the proceedings of the Society of Petroleum Engineers Intl. Symposium on Formation Damage Control in Lafayette, La., Feb. 26-27, 1992, Paper SPE 23810.
Samuelson et al., in the proceedings of the Society of Petroleum Engineers Intl. Symposium on Formation Damage Control in Lafayette, La., Feb. 26-27, 1992, Paper SPE 23816.
Chang et al. in the proceedings of the Society of Petroleum Engineers International Symposium on Oilfield Chemistry in New Orleans, La., Mar. 2-5, 1993, Paper SPE 25185.
Bernadiner in the proceedings of the Society of Petroleum Engineers Intl. Symposium on on FOilfield Chemistry in New Orleans, La., Mar. 2-5, 1993, Paper SPE 25192.
Database WPI, Week 9132, Derwent Publications Ltd., London, GB; AN 91-236081/32, Sep. 15, 1990.

Affiliated with

Also associated with

Rating

Process for removing and preventing near-wellbore damage due to does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for removing and preventing near-wellbore damage due to , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for removing and preventing near-wellbore damage due to will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1839568