... Abstract CO 2 flooding is a promising technique for improving oil recovery in tight oil reservoirs. Because of existence of nanoscale pores in tight oil reservoirs, which can affect phase equilibrium, there will be some variations between CO 2 immiscible and miscible processes in conventional...

... Abstract Small pore sizes on the order of nanometers in the shale gas and tight oil reservoir formations can lead to a large capillary pressure. The presence of capillary pressure significantly affects both the thermodynamic behavior of fluid mixtures and the fluid flow process. Although...

..., and the first part of this paper analyzes the available public data on these pilots. Injectivity of gas or water does not appear to be an issue in the Bakken; however, the projects, in general, show early breakthrough times and poor reservoir sweep efficiencies. Offset wells showed little to no additional oil...

... Abstract The successful development of unconventional reservoir relies on the massive hydraulic fractures which provide high conductive paths and large contact area between matrix and wellbore. Since well production always shows a steep decline after the early high flow rate, refracturing can...

..., D, L fj ) is the pseudoskin factor for the multiple-fracture system. As our focus is on boundary-dominated flow, we have derived asymptotic solutions for a number of situations of interest: One-dimensional, linear flow, flow to a well at the center of a cylindrical reservoir and a flow...

... models in simulation tools. In this work, we analyze the numerical aspects of including capillarity phenomena in VLE calculations in an effort to arrive at robust and efficient algorithms for stability analysis that can be used in compositional modeling/simulation of unconventional reservoirs. When...

... at different stages of well life, including this early-time performance. In particular, linear flow analysis is used to estimate the total effective fracture area from online production data, provided that reservoir and fluid properties are known. However, a primary complication in linear flow analysis...

... Abstract Modeling transient flow of horizontal wells with complex fracture networks is attractive and challenging topic for economically exploitation of low permeability reservoirs. Previous works have been done by employing analytical, semi-analytical and numerical models to solve this problem...

... Abstract When the oil price is low, it is essential to optimize an EOR process in low-permeability reservoir, especially in unconventional shale oil reservoirs. Gas huff-n-puff, has shown to be an effective EOR method. This paper is to optimize this process to enhance oil recovery in shale oil...

... application in oil and gas industry is new despite of the fact that it has huge potential to explore the knowledge regarding reservoir characterization, PVT properties estimation, maximize productions, locating sweet spot using pattern recognition, optimum design of fracturing job, calculation of recoverable...

... Abstract Analytical models available in Rate-Transient-Analysis (RTA) packages are widely used as tools for history matching and forecasting production in unconventional resources. There has also been an increasing interest in the use of numerical simulation of unconventional reservoirs...

... Abstract A database of Wyoming oil reservoirs is developed to identify candidate reservoirs suitable for miscible or immiscible CO 2 flooding, a method that has already proven to be a viable enhanced oil recovery process at Lost Soldier, Wertz, and Salt Creek fields in Wyoming. Based on the CO...

... Abstract The Haynesville Shale is an unconventional gas reservoir located in east Texas and northwest Louisiana. High gas prices and the success of other shale gas plays have led operators to invest highly in this unconventional reservoir. It has great potential for development by applying all...

... nonlinearity pressure transient analysis Upstream Oil & Gas exponential permeability function permeability function numerical solution straight line reservoir reservoir geomechanics pressure range differential equation production monitoring flow in porous media equation reservoir...

... Abstract Sand jet perforating (SJP) is a process that uses high pressure fluid slurry to perforate tubulars and cement within an oil or gas well, and simultaneously extend a cavity into the reservoir. SJP has its origins in the 1960s with many large scale commercial successes in several...

... Abstract Fracturing of horizontal wells is responsible for increasing rates and reserves from many reservoirs. Determining the optimum number of treatments, spacing, and eventual completion efficiency is critical to the success of a horizontal well development. This paper details the production...

... is the petroleum source rock. It serves as part of the continuous reservoir in the Bakken Formation and makes a contribution to the hydrocarbon production 1 . The middle Bakken member is the principal reservoir facies consisting of silty and sandy dolomite found at a depth of approximately 10,000 ft...

... Abstract There is currently a need in rock engineering for a coherent approach, which allows the identification and incorporation of the important parameters and mechanisms for any rock engineering activity. This is the case of reservoir numerical simulation studies of oil/gas recovery...

... technology fracture reservoir hpohp mechanical isolation drilling operation stimulation plug packer horizontal well wellbore vertical well multi-stage fracturing openhole horizontal completion technology vertical application mechanical diversion open hole multi-stage completion equipment...

... Abstract Recent advances in production data analysis (PDA) techniques have greatly assisted engineers in extracting meaningful reservoir and stimulation information from well production and flowing pressure data. Application of these techniques to coalbed methane (CBM) reservoirs requires...