Experimental Investigation on the Imbibition Behavior of Nanofluids in the Tight Oil and Gas Reservoir through the Application of Nuclear Magnetic Resonance Method

Tight oil and gas resources are widely distributed play an important role in the petroleum industry. Due to its nanoscale pore-throat characteristics, capillary effect is remarkable, spontaneous imbibition very beneficial development of low-permeability reservoirs. In this study, experiments 2D nano blackcard, nanoemulsion, water were carried out, respectively. The fluid distribution characteristics before after core analyzed with nuclear magnetic resonance technology, enhanced recovery effects blackcard comprehensively evaluated. results show that final factors cores soaked (0.005 ωt%) nanoemulsion (0.02 or imbibed 32.29%, 26.05%, 7.19%, It can be found best effect. work, a new type was proposed identified as functional for tight reservoirs, providing practical reference effective tight,