Working/control fluid for heavy and extra-heavy crude wells

摘要

A method for improving flow conditions in a porous media while servicing a well penetrating to the porous media includes: stopping drilling or production activities on the well; introducing a well control fluid into the well and the porous media, the well control fluid comprising a mixture of a surfactant, a co-surfactant and a carrier fluid; holding the well control fluid in the well and the porous media in the presence of water while the well is being serviced, such that the fluid penetrates the porous media and forms a water film on surfaces of the porous media; and when well servicing is finished, resuming drilling or production activities on the well.