... Two miscible CO2 WAG pilots (North and East) were successfully implemented in the far north part of the reservoir where the contrast between Upper zone and Lower zone permeability is much lower (1 to 5) compared to western and southern parts of the reservoir, where the permeability contrast range...

... Abstract This paper presents results obtained in a laboratory study investigating incentives for near-miscible CO2 processes. Reservoir-condition corefloods were processes. Reservoir-condition corefloods were completed in both idealized and West Texas-type fluid/ rock systems at pressures...

... Objectives/Scope: The purpose of this thesis is to reduce CO2-oil minimum miscible pressure (MMP) in CO2 flooding some heavy oil which is difficult to miscible with CO2 in general cases. 2 Methods, Procedures, Process: In order to reduce CO2-oil minimum miscible pressure (MMP), a brave idea...

... Introduction Miscible flooding was invented many years ago, and in the 1950's it was viewed as one of the most promising techniques to use for improving oil recovery from a reservoir. Since that time many groups have researched what would be the most important parameters to optimize in the lab...

.... Mathematical Models In this section, we present the mathematical models of compressible miscible displacement and multicomponent gas flow. We first introduce the original forms of the models in unfractured porous media. We then incorporate them with RDFM and give their accommodated forms for the ease...

... Abstract Miscible CO2 flood – similar to miscible hydrocarbon gas injection - is a well-established proven EOR development scheme. There have been a large number of CO2 EOR developments worldwide, with deployment in both carbonate and clastic reservoirs. Potential controlling factors on CO2 EOR...

... conference depletion procedure international presented An innovative laboratory-testing protocol to investigate oil production due to primary depletion and huff-n-puff miscible gas injection from an ultra-tight reservoir rock sample Le Van Si*, Mahdi Khishvand, Keerti Sharma, Mohammad Piri, University...

... One of the key design parameters of Gas Flooding operations is Minimum Miscibility Pressure (MMP) which is a physical parameter, measuring the local displacement efficacy along with some limitations. MMP can be described as the minimum pressure essential for the Residual Oil in Place (ROIP...

..., the miscible gas injection via the huff-and-puff technique has shown promising results from the pilot tests. However, the pilot tests typically show lower recoveries than originally predicted by laboratory work and simulation studies. This paper extends the previous work and utilizes the Lorenz/Cauchy...

... Abstract The minimum miscible pressure (P m ) of CO 2 -hydrocarbon mixtures in nanopores is a key parameter for CO 2 -enhanced shale oil recovery. Although the miscible behaviors of CO 2 -hydrocarbon mixtures in nanopores have been widely investigated through the simulations and calculations...

... a systematic approach toward overcoming the challenges encountered during history matching of the performed experiments. Two vertical core flooding experiments are conducted on tight chalk composite cores at two different pressures providing immiscible and near-miscible conditions for the natural gas and live...

... Abstract As the unconventional shale development matures, the industry has been actively seeking new ways to unlock incremental value beyond primary depletion. In particular, the miscible gas injection EOR via huff-and-puff technique has garnered interest in recent years. However, the pilot...

... permeability zones plays a significant role in determining the reservoir performance in terms of the hydrocarbon yield. In this manuscript, the contribution of crossflow to oil recovery in layered sandstone porous media during miscible CO 2 flooding is explored. We conducted core flooding experiments using...

...Molecular optimization design of improved miscible assistants Considering the cost of fluorine-containing molecules and environmental hazards, non-fluorine-containing aids were designed. The solubility parameters of ester group molecules (CH 3 COOCH 3 ) are close to those of alkanes...