Acid placement and coverage in the acid jetting process

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Title: Acid placement and coverage in the acid jetting process
Author: Mikhailov, Miroslav I.
Abstract: Many open -hole acid treatments are being conducted by pumping acid through jetting ports placed at the end of coiled tubing or drill pipe . The filter -cake on the bore -hole is broken by the jet ; the acid -soluble material is dissolved , creating wormholes in the formation . This combination of two acting factors creates more stimulation beyond the jetting action area . Existing papers have mentioned the advantages of using jetting both for damage removal and as the preliminary stage before further acidizing . Many papers discuss theory and practical implementation of wormholing during acid jobs and the resulting injectivity enhancement , too . However , there is no complete research regarding jetting efficiency with regards to permeability restoration due to filter -cake disruption , and therefore , no data exists for efficient filter -cake removal by acid jetting just prior to wormholing . My project objective is to conduct experiments of acid jetting , defining the parameters that aid to restore injectivity . Based on the parameters obtained from the experiments , I developed a set of recommendations for acid jetting design and optimization .
URI: http : / /hdl .handle .net /1969 .1 /ETD -TAMU -1592
Date: 2009-05-15

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Acid placement and coverage in the acid jetting process. Available electronically from http : / /hdl .handle .net /1969 .1 /ETD -TAMU -1592 .

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