Spontaneous imbibition is a phenomenon of fluid displacement under the action capillary force, which great significance to reservoir protection, enhanced oil recovery, flow-back optimization, and fracturing selection in unconventional gas reservoirs. Remarkable progress has been made research gas, overall situation needs be analyzed more systematically. This paper aims provide scientometric rev...

This paper presents a generalized mathematical model that comprehensively characterizes the flow behavior of matrix nanopores and natural/hydraulic fractures in tight oil reservoirs during spontaneous imbibition. The incorporates various influencing factors such as fracture distribution, displacement pressure gradient, gravity, buoyancy. complex pore structure reservoirs, including natural micr...

Spontaneous imbibition (SI) of the injected fluid into pore space a tight oil reservoir and replacing crude therein has been considered as one possible mechanisms in increasing recovery. Such deeply buried rocks is usually under high-pressure high-temperature conditions. Besides, their interior porous structures are characterized irregular bodies slit-shaped throats. As result, an accurate desc...

Efforts to enhance oil recovery through wettability alteration by nanoparticles have been attracted in recent years. However, many basic questions have been ambiguous up until now. Nanoparticles penetrate into pore volume of porous media, stick on the core surface, and by creating homogeneous water-wet area, cause to alter wettability. This work introduces the new concept of adding ZnO nanopart...

Abstract Capillary dominated flow or imbibition—whether spontaneous forced—is an important physical phenomena in understanding the behavior of naturally fractured water-driven reservoirs (NFR’s). When water flows through fractures, it imbibes into matrix and pushes oil out pores due to difference capillary pressure. In this paper, we focus on modeling quantifying recovered from NFR’s imbibition...

In this paper, a very efficient method, called single matrix block analyzer (SMBA), has been developed to determine relative permeability and capillary pressure curves from spontaneous imbibition (SI) data. SMBA mimics realistically the SI tests by appropriate boundary conditions modeling. In the proposed method, a cuboid with an identical core plug height is considered. The equal dimensions of...