000 02642nmc a2200253 4500
005 20260520005609.0
008 260224s2001 xxu ing
041 _aInglés
245 0 0 _aCrosslinked Methanol: Analysis of a Successful Experience in Fracturing Gas Wells
_bSPE 69585
260 _aDallas, Texas
_bSociety of Petroleum Engineers
_c2001
270 _a12/09/06 ; 01/08/01
520 _aOver 200 hydraulic fracturing jobs using crosslinked anhydrous methanol as fracture fluid, have been performed in Argentina since the introduction of the technology in the country in 1992. Initial development of the crosslinked methanol was intended to reduce formation damage caused by swelling clays and capillary blockage related to high fluid surface tension when stimulating gas reservoirs. This paper summarizes the basic development of the technology, presenting recent findings on lower friction pressure, proppant carrying properties, environmental concerns solutions and larger temperature range of application. It also reviews the acquired experience, focused on its application in the field with the most extensive usage in Argentina, and it includes references to the broadening of the span of applications to different gas bearing rocks, higher temperatures and deviated wells; and a brief discussion on safety and cost issues. A study of the factors influencing the gas flow initiation stress (FIS) at fracture faces after being invaded by fluid filtrate is presented, supported by laboratory tests comparing water base fluid against methanol base fluid. Finally, the influence of fluid vaporization is presented as a key mechanism unique to methanol that overcomes the effect of FIS (both at the fracture faces and in the propped fracture) in reducing effective fracture length. Methanol vaporization explains that the effective fracture lentgh will approach total propped length resulting in increased early time productivity and ultimate gas recovery.
942 _cCONGTP
100 1 _aAntoci, Juan Carlos
_92440
100 1 _aBriggiler, Norberto J.
_96419
100 1 _aChadwick, Jorge A.
_96420
111 2 _aLatin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina)
_95738
700 1 _aBriggiler, Norberto J.
_96419
700 1 _aChadwick, Jorge A.
_96420
711 2 _aLatin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina)
_95738
800 1 _aAntoci, Juan Carlos
_92440
999 _c131136
_d131136
856 _uhttps://biblioteca.iapg.org.ar/ArchivosAdjuntos/LACPEC2001/Spe69585.pdf