Application of chlorine dioxide as an oilfield-facilities-treatment fluid
- Rio Linda Chemical Co., Inc., Sugar Land, TX (United States)
- Exxon Co. USA, Gillette, WY (United States)
- Nalco/Exxon Energy Chemicals L.P., Sugar Land, TX (United States)
Both mechanical and chemical treatments are used to clean waterflood-injection distribution systems whose efficiency has been reduced as a result of plugging material, such as iron sulfide (FeS) containing sludge. Most mechanical treatments rely on uniform-line diameter to be effective, while chemical treatments require good contact with the plugging material for efficient removal. This paper describes the design and operation of a new innovative application using chlorine dioxide (ClO{sub 2}) for the removal of FeS sludge from waterflood-injection distribution systems. The use of ClO{sub 2} for continuous treatment of injection brines will also be discussed. Exxon USA`s Hartzog Draw facility in Gillette, WY, was the site for the application described. A total of 4,500 bbl of ClO{sub 2} was pumped in three phases to clean 66 miles of the waterflood-distribution system. Results indicated that ClO{sub 2} was effective in cleaning the well guard screens, the injection lines, and the injection wells. The addition of excess ClO{sub 2} to the frac tanks used to collect the treatment fluids also reduced waste handling and disposal costs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 194742
- Journal Information:
- SPE Production and Facilities, Vol. 11, Issue 1; Other Information: DN: Paper presented at the 1995 SPE International Symposium on Oilfield Chemistry, San Antonio, TX, February 14--17; PBD: Feb 1996
- Country of Publication:
- United States
- Language:
- English
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