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Large-volume acid treatment with coiled tubing on Yugomashevskoe oil field

Authors: A.V. Akimkin (Bashneft JSOC, RF, Ufa), S.A. Vakhrushev, I.M. Gallyamov (BashNIPIneft LLC, RF, Ufa)
The paper reviews the results of a pilot project which was designed to test a bottomhole treatment technique on wells with carbonate target reservoirs. The technique involves injecting large volumes of hydrochloric acid (specific volume over 2 m3 for 1 m of the treated interval) through coiled tubing. Coiled tubing makes the acid treatment possible without any lifting or tripping-out of the down-hole pumping equipment.
The paper reviews the results of a pilot project which was designed to test a bottomhole treatment technique on wells with carbonate target reservoirs. The technique involves injecting large volumes of hydrochloric acid (specific volume over 2 m3 for 1 m of the treated interval) through coiled tubing. Coiled tubing makes the acid treatment possible without any lifting or tripping-out of the down-hole pumping equipment.


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