The Optimization And Application Of The Colloidal Dispersed Gel

Recent years,the important measure to increase the crude oil recovery ratio is using displacing fluid.The nonhomogeneity of oil field make the displacing fluid to displace along high permeability formation,can't spread to the low permeability with no oil.Using low concentration polymer and crosslinked impregnant make it form low viscosity glue state separating gel,simply intitule CDG.It put up no immobile shape ,have relative flowability , can intrude into the deep formation,selectively plug big pore pathor and high permeability formation,make the fluid turn to low permeability formation ,improve the low conformance factor caused by the nonhomogeneity ,improve the recovery ratio in big range .CGD is a new rising technology of enhance recovery, it have important significance of improving old oil field waterflooding efficiency. Simplicity polymer oil drive technology can't satisfy the durative development of DaQing oil field ,the paper go deep research into the study of CDG technology, integrate the status of pilot area ,develop the experimental study aimed at CDG effect factor drive ,study and contrast analysis the capability of vary CGD system ,combine the viscosity ,converse pressure,resistance coefficient,,residual resistance coefficient,oil drive effect and rheological property and other technical parameter to filter the CDG analysis formulation.base on the chamber oil drive experiment ,develop relative repeat experiment about polymer odd slug, CGD sistym odd slug ,system and CGD combination slug,compare the oil drive effect, optimize and design the slug combination, offer credible experimental and theory gist for lucubrate lease experiment blue print ,numerial modeling and CDG technique.