.... By choosing the most efficient patterns in terms of gas utilization it is possible to increase oil recovery in these areas by 10-15% OOIP. reservoir characterization gas injection method upstream oil & gas gas injection structural geology enhanced recovery waterflooding fluid dynamics...

... Abstract Eagle Ford Cyclic Gas Injection EOR (CGEOR) was started in late 2012, by EOG Resources, and has expanded to over 30 leases by 6 operators (266 wells) to date where produced gas is being injected. An extensive EOR evaluation was initiated by Shale IOR to understand results...

... Abstract Huff-n-puff gas injection enhanced oil recovery has received increased attention especially in the unconventional plays like the Eagle Ford, where oil recovery is as low as 5 - 10%. An increase in 1% of recovery could realize a potential of 2.3 billion barrels of oil, which has...

... Abstract This paper focuses on simulation modeling of a gas injection pilot operated in the Eagle Ford Shale play. The main objective of this case study is to understand the flow mechanisms in the reservoir due to hydraulic fracturing of multiple wells and gas injection operations. A dual...

... Lessons from gas injection in oil reservoirs are that gas volumetric swept efficiency is inherently low due to gravity override caused by low gas viscosity, density and formation heterogeneity. Therefore, methods to improve volumetric sweep efficiency are valuable. Gas mobility can be reduced...

... hydraulic fracture stages along their horizontal section in all major unconventional plays in the US. We then can visualize the application of gas injection as a process that follows the primary production of the well and takes advantage of the existing well architecture. For doing so, we developed...

... Abstract The improved oil recovery of unconventional shale reservoirs has attracted much interest in recent years. Gas injection, such as CO 2 and natural gas, is one of the most considered techniques for its sweep efficiency and effectiveness in low permeability reservoirs. However...

... artificial lift system hydraulic fracturing thermal method SAGD enhanced recovery re-fracturing Modeling & Simulation gas injection method gas lift fragoso fracture capacity horizontal well Oil Recovery Upstream Oil & Gas oil production hydraulic fracture property...

... Table 1 Properties of Bentheimer sandstone cores used in the core-flood experiments. Five different experiments were conducted: a) continuous gas injection at varying pressure (CGI VP), b) continuous gas injection at a constant pressure of 5 bar (CGI CP 5 bar), c) continuous gas injection...

... Abstract A miscible injectant was used in a single injection well pilot in the Yates field to mobilize remaining oil in the gas cap and accelerate gravity drainage. Nitrogen, CO 2 and recycled gas injection, all immiscible with Yates oil due to low original and current reservoir pressure, have...

... to contain high-pressure gas injection near the well. Wellbores contact the most productive rock. The completion maximizes the fractured area within a restricted zone around the wellbore. Abstract This paper describes the use of advanced completions employing passive inflow control devices (ICD...

... of molecular diffusion at the fracture-matrix interface for the incremental oil recovery from gas injection. Model results indicate that converting three producers to injector wells, and producing from the remaining eight producers, yielded total oil recovery of 4.68% in fifteen years of production with 13...

... Abstract Enhanced-oil-recovery techniques by gas injection in shale reservoirs have been introduced and investigated. Laboratory and simulation works have shown good results for enhanced shale oil recovery, but one problem with gas injection is asphaltene precipitation and deposition. Damage...

... Abstract Cyclic gas injection is considered as an effective and quick responding recovery process that has been widely used in the worldwide. Studies showed that cyclic gas injection combined with modern technologies such as horizontal well drilling and hydraulic fracturing has achieved...

... Figure 6-a indicates that, the water relative permeability is identical during the two gas injection cycles. Simply, the water relative permeability is independent of saturation history and trapped gas saturations, a characteristic of the wetting phase relative permeability ( Holmgren and Morse...

... Abstract Gas injection is a widely used enhanced oil recovery method and its application is expected to increase due to the high oil price and the need for sequestering carbon dioxide. In order to build a method of characteristics (MOC) solution to a two-phase gas injection system, we need...

... Abstract Miscible and immiscible hydrocarbon and non-hydrocarbon gas injection have been effective in enhancing oil recovery in conventional reservoirs. In unconventional shale reservoirs, gas injection could potentially improve oil recovery based on experimental observations of Hawthorne et...

.... injection period Upstream Oil & Gas enhanced recovery gas production co 2 oil production Modeling & Simulation water saturation recovery kozluca field saturation reservoir development strategy gas injection injection heavy oil carbonate reservoir injection pattern permeability...

... Abstract This paper focuses on studies carried out to explore possibilities to improve both areal and vertical sweep efficiency in mature WAG patterns in the Magnus oil field. Magnus tertiary miscible gas injection started in 2002 through a WAG scheme taking the recovery factor close to 56...

... Abstract Minimum misciblility pressure (MMP) is a critical parameter in designing a miscible gas injection process. It is expected that 100% displacement efficiency on the microscopic scale can be achieved provided the injection pressure is above MMP. Two approaches are usually employed...