A Unique Method of Evaluating Stimulation Effectiveness in Production Damaged Slotted Liners

Abstract

bht 1995, society of PetroleumEngineer%Inc. Thle paper wee preparedfur preeentetiin at the Weetern RegioneiMeeting held in Bakersfield,CA, U.S.A., B-10 March 19S5. This peper wee eeboted for preaentetii by an SPE ProgramCommitteefollowingreviewof information oonteinedin an ebetreotsubmittedby the author(s). C0ntent8of the Paper, ee preeented,hew not been reviewedby the Sooiatyof PetroleumEnglneereand areeubjeotto correctionby the author(s). The materiel,ae preeented,doee not neoeeeerltyrefbtt any poeitbnof the Sooietyof Petrmleum i%gineere,iteoiikere, c+ merniim.~@WS~~t X s~~~I~W~r :~ti~:~P' M!C+!OR~~h. Frl&!Q! @rnm!tteee cd !hQ SOOiety of PetroleumEngiwre. Perr&esbntoCOPY ie reetrbtedtoan dwtreotcdnotmorethenS00wrote. Iiluetratbnemaynotbe oopbd.The ebetreol shouldcontelnoonepkuoue eoknowiadgment ..-, -of where and by whomthe paper is preeented.Write Librarian,SPE, P.O. Box SSSSSS, Rbherdeon,TX 750S$SBW, U.S.A., Telex 1SS245SPEUT. ABBTRAC TAfter years of service in steamflood and cyclically steamed reservoirs, slotted liners tend to become clogged with migrating formation material and heavy asphaltene deposits'.These deposits seriously restrict inflow and typically make the wells economically unproductive. Acid wash jobs performed through coiled tubing jet wash tools have been found to be extremely effective as a damage removal technique. This paper describes development, testing and preliminary findings of a test vessel which can mechanically isolate small sections of damaged slotted liners and evaluate the effectiveness of different stimulation scenarios.