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3.o sai.urro~ ~nr;ltic. ADD ru(mt:cr raocL~s~l~r, <br />tiofutinn minim; of nahcolite ,,vill cxcur from vertical solution mining; wells. <br />Riulnple ;c}lotion mining wells well operate slmultaneraush•; however, Bath ~+•ell <br />will L+e mined indi~pendently. b4inrd nahro(ite will fk rentnved from the <br />subsurface in solution form and x•111 ~ubceyuently fx• prLx~•ssed into lural <br />prrduits, iniludin}; sodium iarbunatr, sodium bicarhanah~, and utlter sodium <br />eampuunds. i'rocessing ~.•ill occur at hvo facilities, and pipelines ti.•ill providr <br />intermediate transport tx°haccn the facilities. <br />I tlc soluhun mining pra};ram leas Lx~~n developed using; data froth ttte existing <br />test sl+lotion minim; wells (211.2 and 211-3) and nrck mL~.fianres arrah•sis iandurted <br />by Agapito Asslkiales, Ini. (Agapito i99R). "fhe process design r~•as ronrl?leted <br />he f:vaerner Metals, Davv Nonferrous Division. <br />3.l SOLUTIOK AlIN1NC. <br />Cunsiruitinn detaik for the solution milling lYl'I1S arl' dL'sit'Ibed in `x•itnm 1.-t <br />"l he wells will pruvide.tciess la the naturalh cx•.urrin}; n+hcuhte resource, tisl•liih <br />is generally lcxatrd from about i,•ICitl to 2,1111 feet beiaw gruwni surface (bawd <br />an a ground elevation of b,21)(! het msl). 'f'}x~ well strings transport fluids <br />bcttvccn tlli~ surtoec anti the nahculitc resuttrcc and also sen•c as iundwts fur <br />instrumentation equipment. As nahcolite is rained, a leached area is crr.urd at <br />the h~+ttum of thr wall over the approximate interval from 15511 to 2,21H1 feet <br />helotiti• ground surface. 1~'hen tntalh nuned, the leached arra tivill have had _'S to <br />~U percent of its anginal volumcr, i.e., that part occupiLtii by nahiolite, remuvLyi <br />by solution mining. Although it is nut actually a void, fire lcaihed area is <br />referred to herein as a solution raining; cavih•. <br />Eaih well will contain 1111 Ilrlt'Ct1011 N'IrII stria}; and a production well string, Lx+th <br />of whirh may be moved up nr down ivlthin the intennediatr well rasing; and <br />whose hur.aions may be alternated. Otte string will rxtend deeper than t}te ut}rc~r <br />aunt; G+ minimize short-circuiting, i.e., injstion fluid traveling directly to the <br />}~raducti~rn st:•ing nether than rir.•utatint; within the cavity. Generallt•, the <br />inlectiun fluid will exit tl.e upper wrll string, enter thr cavih~, and dissolve the <br />nahrolite. l'he fluid, now called pn~durhon fluid, tii•ill leave the cavih• thrrnt};h <br />the lawrr (proLlurtion) well string and will exit t:he well carn-ing the dicaolcLtii <br />nalliolitc in si+luuon. <br />The solution mining, cavftiLw tivill grow in diameter as the wells o}n rate over <br />hme. The prreLiicted boat cunfiguralion of a single solution mining cavih• is <br />roughh~ a c>.•lindcr with an average diameter of approximately 2011 het and a <br />