The carbonate reservoir plays a pivotal role in conventional oil and gas reservoirs. However, due to limited knowledge of fluid flow characteristics fractured-vuggy formations (vuggy means small medium-sized cavity inside rock), high efficiency development remains challenging. In this study, the similarity principle is utilized design two-dimensional visual model based on geological data inject...

During the development of oilfields, casings in long-term service tend to be damaged different degrees, leading poor ineffective water circulation, and wasted resources. In this paper, we propose a data-based method for predicting casing failure risk at both well well-layer granularity illustrate application GX Block an eastern oilfield China. We first quantify main control factors damage by ad...

Abstract We predict waterflood displacement on a pore-by-pore basis using pore network modelling. The structure is captured by high-resolution image. then use an energy balance applied to images of the assign average contact angle, and modify local pore-scale angles in model about this mean match observed sequence. Two waterflooding experiments oil-wet rocks are analysed where sequence was imag...

[1] Residual non-wetting phase saturation and wetting-phase permeability were measured in three limestones and four sandstones ranging in porosity from 0.13 to 0.28 and in absolute permeability from 2 10 15 to 3 10 12 m. This paper focuses on the residual state established by waterflooding at low capillary number from minimum water saturation achieved using the porous plate technique, which yie...

We present a novel methodology for the prediction of three-phase oil relative permeability, kro, through a sigmoid-based model. This modeling choice allows us to incorporate key effects of the pore-scale phase distributions into the proposed effective empirical model for kro. Our sigmoid-based model is able to reproduce: (i) oil remobilization induced by gas injection in water-wet media; (ii) a...

Abstract Understanding the dynamic migration mechanism of oil-water two-phase is key to improve effect water injection development in low permeability fractured reservoir. Based on artificial fracturing core and basic physical parameter testing, online NMR displacement experiments cores with different fracture widths are conducted analyze distribution characteristics mechanisms. The experimenta...

The article presents an analysis of the intellectual property market in field enhanced oil recovery (EOR) methods. search retrospectively covers period from 2010 to 2020. Russia, China, and United States are leading countries Canada, Germany, Saudi Arabia also have a high level patent activity compared with other countries. Semantic statistical obtained sample documents made it possible highlig...