C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/035 (2006.01) C09K 8/584 (2006.01) C09K 8/60 (2006.01) C09K 8/62 (2006.01) C09K 8/94 (2006.01) E21B 43/16 (2006.01) E21B 43/25 (2006.01)
Patent
CA 2425481
Methods are provided for increasing the production of hydrocarbons from shaly formations that contain adsorbed condensed hydrocarbon gases by treating such formations with dewatering compositions comprising surfactants that cause the surfaces of the formation to be or to remain oil-wet. The methods may be used in stimulation (acidizing or acid fracturing or hydraulic fracturing), remediation or workover, and in enhancing flow from natural fractures or from unstimulated formations.
La présente invention concerne des procédés permettant d'augmenter la production d'hydrocarbures issus de formations schisteuses qui contiennent des gaz d'hydrocarbure condensés adsorbés. Ces procédés consistent à traiter ces formations avec des compositions déshydratantes comprenant des surfactants qui laissent les surfaces de formation mouillées de pétrole. On peut utiliser ces procédés dans la stimulation (acidification ou fracturation à l'acide, fracturation hydraulique), dans des mesures correctives ou dans le reconditionnement, et pour renforcer l'écoulement en provenance de fractures naturelles ou de formations n'ayant pas fait l'objet d'un processus de stimulation.
Boney Curtis
England Kevin
Hinkel Jerald
Miller Matthew
Schlumberger Canada Limited
Smart & Biggar
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