Study and Application on Layered Polymer Injection with Concentric String

Ya Wei He; Li Cai Liu

doi:10.4028/www.scientific.net/AMR.535-537.1135

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 535-537Study and Application on Layered Polymer Injection...

Study and Application on Layered Polymer Injection with Concentric String

Abstract:

At present, the domestic pipe string on layered polymer injection is mainly focused on the layered polymer injection technology with the hollow single pipe string, but it's limited by facts such as complicated operating and retrieving, subjecting to plugging, and single injection fluid system for each and every zones in a well. This paper starts with the idea of concentric string, directing at the construction about the profile controlling on the injection well which has 2-section or 3-section, the layered injection technique of 2-section with tubing-casing and 3-section with concentric string is investigated separately. Based on the actual formation section properties, relatively independent injecting channels are established from wellbore, and its technical proposal and corresponding tools are preceded. Now the technique has been successfully performed on 15 wells, meeting the requirements of the layered profile controlling by injecting different fluid system and displacement as well as different concentration to different layers.

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Periodical:

Advanced Materials Research (Volumes 535-537)

Pages:

1135-1141

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.535-537.1135

Citation:

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Online since:

June 2012

Authors:

Ya Wei He, Li Cai Liu

Keywords:

Anti-Corrosion Polymer Injection, Layered Polymer Injection, Layered Polymer Injection with Concentric String, Lower Shear, Separate Injection through Tubing and Casing

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