The paper presents the findings of 20 completions in both oil and gas wells. These completions were performed from the period of 1973 through 1994. The early completions employed sand control technology of the 1970's and 1980's with most requiring acid stimulation immediately after sand placement to assure the removal of completion damage. The 1994 completions Involved fracturing combined with sand control (frac-packing) in the same reservoirs which had been gravel packed in the '70's and '80's.The unique aspect of this review is that these fracturing treatments were carried out using a solidsfree viscoelastic surfactant fluid. The fluid system is discussed along with the reasons why this particular fluid was selected. The implications that this fluid has on the fracture placement as well as productivity are discussed.Laboratory testing indicates that the solids based polymer fluids actually exhibit "deep bed" filtration and plug the formation pore throats, the fracture packs, and perforations. This damage can require acid stimulation for optimized production.The completion results are compared by use of a productivity index (J), normalized Jl\ and bottom hole pressure build-up analysis.
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COPYTWII 1SS4, SOcidY of Potrolaum EnQnaafs kc. rI TWO papar was pmparad for prasantation at tha Annual Tadmkal Ccmfamnce andExhibitibrI hold in NW Orkms, IA, SSPWIIW 25-2S, 1994. This p-was sdactad for prasantsitii by m SPE Program Cunmha follwing review d infarmaIii catsind in an abstraci aubrMtad Cy tha wthor(s). @!!entt c!~~, 6S prwentad, have not bean raviawd by Iiw S.xMy c# FW9@.% Er@nGefs.+ am~io cormckn by the miihcx(a). TheI matafiai, as pmwnted, does not nocewariiy tied rny positii 01 the %c4aty 01 Pabuieum Engineers, its c4?icm, w rrmmbus, PaperY prasonted at SPE rnaetirw am subject to publicatii rwiaw by Editorial CCmKniltwa 01 M SQ@ety e! Patrolwrn Enginaara, Pannission to ccpy is rastriued to M abslrad e! !?s! M tkb W .WX%S ihimiii may M be wpied. Tha abstrwl should cantain conspicuousõ f-and w wimnn ltw papsr in praaanted. Writs Publii@ns Mmugar, SPE, P.O. Sox S22S2S, Rkhudaon, TX 7SOSS-SW U.S.A. Taias, ?'SC9S9 SPEDAL.
Copyr(ghl 1S96, Soc(efy of Petroleum Eng,neers lnc This paper was prepared lo< presenlahon a! the 1996 SPE Arm. al Techrvcal Conference and Exh,b(tton held m Denver, Colorado, U S A., 6-9 October 1996 Th(s paper was selecled Ior presental!on by an SPE Program Comml!tee Iollowmg rtwew o! mlorma!lon contained m an abslracl submf! led by the author(s) Conlenls 01 [he paper, as pfesenled, have not been reviewed by the Soc!ely of Pelroleum Eng(neers and are subject to correcimn by the author(s) The material, as presented, does not necessarily rellect any pos,t$on of the Soc,ety of Pe!role.m Engineers, IIS oti!cers, or members Papers presented at SPE meetings ace s.blect to publcabon rev(ew by Ed,tortal Commtlees of tha %c(ety of Petroleum E"gmeem Perrmswon !0 copy IS rest, (cted 10 an abstract of not more Ihan 3C0
AbstractThis is a study of height growth in nine (9) wells encompassing thirteen (13) productive intervals that were completed as frac packs.
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