E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/22 (2006.01) C09K 8/588 (2006.01)
Patent
CA 2723799
A method of removing clay compounded on drilling equipment in a well that includes contacting the drilling equipment with a treatment fluid comprising an oxidizing agent. Methods disclosed also relate to drilling a wellbore though a clay-containing formation that includes drilling through the formation with a water-containing drilling fluid; reducing applied weight-on-bit when bit balling detected; emplacing a treatment fluid comprising an oxidizing agent to disrupt clay compounded on drilling equipment; and increasing weight-on-bit to continue drilling through the formation
Linvention concerne un procédé délimination dargile accumulée sur léquipement de forage dans un puits qui comprend la mise en contact de léquipement de forage avec un fluide de traitement comportant un oxydant. Linvention concerne également des procédés pour forer un puits de forage à travers une formation contenant de largile qui comprend le forage à travers la formation avec une boue de forage contenant de leau ; la réduction dun poids appliqué au trépan lorsquun bourrage du trépan est détecté ; le placement dun fluide de traitement comportant un oxydant pour désintégrer largile accumulée sur léquipement de forage, et laugmentation du poids au trépan pour poursuivre le forage à travers la formation.
Mettath Sashikumar
Patel Arvind D.
Stamatakis Emanuel
Young Steven
M-I L.l.c.
Smart & Biggar
LandOfFree
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