Node without wells or specified head outside aquifer. Geological reservoir characterization and modelling of a co2. Reservoir fluid characterisation supplementary scripts used at the montanuniversitat up to the retirement. Pdf reservoir simulation of co2 storage in deep saline aquifers. Blackoil and compositional simulators can be used for reservoir simulation. When successfully integrated with a reservoir simulator, the net result is a model that effectively simulates performance of water drive reservoirs. Introduction to reservoir simulation dr panteha ghahri. The difficulty in applying traditional reservoir simulation and modeling techniques for unconventional reservoir forecasting is often related to the systematic time variations in productiondecline rates.
Department of energy national energy technology laboratory. Nagaoka project the nagaoka site is located near nagaoka, niigata prefecture, in the niigata basin of central japan fig. Accurate fluid flow simulation in geologically complex reservoirs is of particular importance in construction of reservoir simulators. Compositional reservoir simulator cmggem was used to. For edgewater drives, the thicknesses of the reservoir and aquifer are identical. The student will use a model of an aquifer to describe how ground water flows through an aquifer, how ground water can become contaminated, and why it is so difficult to clean contaminated ground water. The reservoir simulates the innermost production part of the geothermal system, and the aquifers simulate the outer parts of the system. It was found that the grid size is a key parameter in modeling. Well production rates of oil, water and gas field reservoir pressure individual wells pressures and pi reservoir simulation tasks. The reservoir modeling team team was established within the flow rate technical group frtg to develop an independent assessment of the rate at which oil and gas can be produced from the sands penetrated by bps macondo well. Permeability modeling reservoir model caprock co 2 entry pressure dynamic simulation results the arbuckle group saline aquifer is a thick 800 ft and deeply buried 3,500 ft siliceous dolomite with interbedded shales. This article describes the steps necessary to conduct a detailed reservoir simulation study also see reservoir modeling for simulation purposes. Dynamic modeling of pilot scale co2 injection in the. Modeling co 2 sequestration in saline aquifer and depleted.
Jan 01, 2005 in the north sea tilted oilwater contacts owcs are recognized in fields of paleocene, cretaceous and jurassic age. Most importantly, they predict the cumulative water influx history. In this paper, we present as a case study, an example of reservoir characterization and development of a reservoir model for a saline aquifer near nagaoka, japan. Reservoir modeling and simulation cairo university. Reservoir simulation is an area of reservoir engineering that, combining physics, mathematics, and computer programming to a reservoir model allows the analysis and the prediction of the fluid behavior in the reservoir over time it can be simply considered as the process of mimicking the behavior of fluid flow in a.
The simulation results, therefore, represent impacts of the maximum quantity of co 2 that was originally planned for the wellington project. In the north sea tilted oilwater contacts owcs are recognized in fields of paleocene, cretaceous and jurassic age. A compositional simulation model is prepared for the aruma aquifer using the available log data and flow test data. Core and welllogging analysis show that the target aquifer consists of deltaic deposits, which. Abstract reservoir simulation is an important tool that can be used to simulate as well as predict production from shale reservoirs. General approaches in naturally fractured reservoir simulation involve use of unstructured grids or a structured grid coupled with locally unstructured grids and discrete fracture models. This aquifer is part of the paleozoicage ozark plateau aquifer system opas in southern kansas. A reservoir simulation study consists of two essential elements. Although such problems can be computed with reservoir simulation, the objective of this work was to develop an empirical method of making water production predictions. In general, simulation refers to the representation of some process by either a theoretical or a physical model. Compositional reservoir simulator cmggem was used to simulate 10 years of co 2 injection phase and simulate the fate of co 2 post injection from hundreds to thousands of years. Dynamic modeling of pilot scale co2 injection in the arbuckle. The objectivewas to better understand and quantify estimates of the most important co2storage mechanisms under realistic physical conditions. Abstract the proposed study modeling co2 sequestration in saline aquifer and depleted oil reservoir to evaluate regional co2 sequestration potential of ozark plateau aquifer system, southcentral kansas is focused on the paleozoicage ozark plateau aquifer system opas in southcentral kansas.
Site characterization is critical for safe and effective geological storage of co 2 because geological heterogeneity affects reservoir quality, plume migration, and trapping. Heilweil was simulated as well withdrawals, shallow drains at the base of reservoir dams, and seepage to the virgin river. Classical reservoir simulators allow for simulation of multiphase flow in heterogeneous reservoirs with special variations of reservoir properties including pay zone thickness, fluid saturation, porosity. Reservoir simulation of co2 storage in deep saline aquifers. Modeling co 2 sequestration in saline aquifer and depleted oil reservoir to evaluate regional co 2 sequestration potential of ozark plateau aquifer system, southcentral kansas project number defe0002056 u. Simulation studies are carried out based on a homogeneous aquifer model.
Reservoir simulation of co2 storage in deep saline aquifers article pdf available in spe journal 103 september 2005 with 673 reads how we measure reads. Discretization and gridding in reservoir simulation 2. This paper proposes a nonparametric statistical approach to resolve this difficulty. We present the results of compositional reservoir simulation of aprototypical co2 sequestration project in a deep saline aquifer. The modeler calibrates the flow model by verifying and refining the reservoir description during the. Basics of reservoir simulation with the eclipse reservoir simulator.
Aquifer characterization and modelling, a case study of. The irregular shape may be accomodated by either numerical simulation or by using an apparent radius and angle which provide a reasonable equivalent shape. Integrated reservoir modeling and simulation reservoir simulation is a branch of petroleum engineering developed for predicting reservoir performance using computer programs that through sophisticated algorithms numerically solve the equations governing the complex physical processes occurring during the production of an oilgas reservoir. Drive mechanism, is there any aquifer reservoir performance results. Natural fractured reservoir engineering phdg textbooks in preparation, intended to be issued during 2015. In areas where lateral pressure potentiometric gradients exist in the aquifer, owcs dip in the direction of pressure drop and hydrodynamic flow occurs. Input data four basic information of reservoir, aquifer, temperature, and well are involved as significant parameters in developing this hsa model.
Basics of reservoir simulation with the eclipse reservoir. Such analyses are orders of magnitude faster than one using reservoir simulations. Reservoir simulation study for co2 sequestration in saline. The simulation grid can be extended artificially below the owc.
The aruma aquifer, a shallow saline aquifer in southwest qatar is used as a case study for co2 sequestration. Chapter cl finitedifference model for 0 aquifer simulation. Reservoir simulation is based on well known reservoir engineering equations and techniques the same equations and techniques the reservoir engineer has been using for years. Geological reservoir characterization and modelling of a.
Reservoir modeling of co2 injection in arbuckle saline. Reservoir simulation of co2 storage in aquifers onepetro. Reservoir simulation is the study of how fluids flow in a hydrocarbon reservoir when put under production conditions. Naturally fractured hydrocarbon reservoir simulation by. Input data four basic information of reservoir, aquifer, temperature, and well are involved as. The proposed study modeling co2 sequestration in saline aquifer and depleted oil reservoir to evaluate regional co2 sequestration potential of ozark plateau aquifer system, southcentral kansas is focused on the paleozoicage ozark plateau aquifer system opas in southcentral kansas. Modeling flow and nitrate transport in an over exploited.
Reservoir simulation has become an industry standard practice in production forecast at well level, facility level, and field level. Numerical simulation of groundwater movement and managed. Explanation node symbols inside aquifer transmissivity o w discharge well. Water influx models are mathematical models that simulate and predict aquifer performance.
Described by coupled, nonlinear partial differential equations pdes solution to pdes cant be found analytically we are left with solving. Apr 03, 2015 when production starts, for example by water injection or depletion, fluid saturation and fluid pressure change in time. Often this is called natural water drive to distinguish it from artificial water drive that involves the injection of water into the formation. Water volume of the aquifer connected to the injection site connectivity kh in the connected analytical aquifer pressure developments for large scale injections very sensitive to the size of the simulation domain and type of boundary conditionsof the simulation domain and type of boundary conditions s. The reservoir modeling team team was established within the flow rate technical group frtg to develop an independent assessment of the rate at which oil and gas can. As production continues, and oil is extracted from the reservoir, the aquifer expands into the reservoir displacing the oil. Paper open access geothermal reservoir simulation of hot. Reservoir simulation an overview sciencedirect topics. This is a valid approach when modelling aquifers that are small compared to the oil zone.
A simulation study requires description of the reservoir s rock and fluid properties, validation of completion and production history, and extensive history matching to validate and modify this input data. This has the flexibility that goes with the usage of the entire suite of g r i d section keywords to modify the aquifer properties to match the simulation to the measured aquifer. Aquifer boundary mathematical boundary diml number of rows. Reservoir simulation modeling pdf eclipse reservoir simulation software download free mathematical modeling simulation visualization and elearning mathematical modeling and simulation in chemical engineering modeling and simulation of the economics of mining in the bitcoin market. It is best to use the simplest model which can meet the study objectives. Blackoil simulations are easier and less timeconsuming than. The outer aquifer can either be closed or can be connected to a. The modeler calibrates the flow model by verifying and refining the reservoir description during the history match. We present the results of compositional reservoir simulation of a prototypical co2 sequestration project in a deep saline aquifer.
This paper presents a simulation optimization model that integrates linear reservoir decision rules, detailed simulations of stream aquifer system hows, conjunctive use of surface and ground water. If the reservoir is small and vertical and areal effects are important, it may be possible to use a fullfield 3d model. The type of reservoir simulation model used, is significant in this process. Numerical simulation of groundwater movement and managed aquifer recharge from sand hollow reservoir, hurricane bench area, washington county, utah by thomas m. The modeling system of uthbal, uthrl, lak3 and modflow has been calibrated and successfully applied to lake karla watershed by 9. Pdf reservoir simulation of co2 storage in deep saline. The direction and magnitude of potentiometric gradients in the north sea vary locally. A lesson plan describing how to build a model aquifer. In this work, a reservoir simulation study is conducted for a nonvolumetric gas reservoir with different aquifer sizes so a correlation was developed for estimating the size of an underlying aquifer from material balance. Clearly, for most reservoirs, solution gas drive will also be taking place, and there may also be a gas cap contributing to the primary recovery.
Computer runs may be performed at an early stage of the reservoir study to estimate sensitivity of calculated reservoir performance to variations in the various required input data. The objective was to better understand and quantify estimates of. This model is intended to simulate edgewater and bottomwater drives. The simulation model itself can be a useful tool in allocating effort and expense in determination of reservoir fluid and rock data. Reservoir simulation is an area of reservoir engineering that, combining physics, mathematics, and computer programming to a reservoir model allows the analysis and the prediction of the fluid behavior in the reservoir over time. Modeling guides groundwater management in a basin with. The petrel reservoir engineering core provides a complete environment for pre and postprocessing simulation workflows. Reservoir geometry and dimensions the geometry and dimensions of the reservoir influence the selection of the model grid. These methods suffer from drawbacks such as lack of flexibility and of. The direction and magnitude of potentiometric gradients in the north sea vary locally, but are generally observed to be. Abstract modeling co2 sequestration in saline aquifer and. There are lots of sources of water production data in m1, and water production data are one of the most important and invaluable surveillance data to understand reservoir connectivity.
Jul 05, 2017 reservoir simulation is the study of how fluids flow in a hydrocarbon reservoir when put under production conditions. This work is based on mathematical modeling of rainfall runoff hydrological processes in the pbm and the infiltration, percolation and recharge in the dirm the detention and infiltration reservoir of mirassol. Understand flow and transport in our reservoirs to make engineering decisions develop mathematical models to describe pressure, velocity, saturation, etc. M1 reservoir is a large multilayered sandstone reservoir in middle east, which is under primary depletion and edge aquifer drive. Many gas and oil reservoirs are produced by a mechanism termed water drive. In this study, the doe and rs analysis is performed with jmp 8.
When production starts, for example by water injection or depletion, fluid saturation and fluid pressure change in time. The aim is to predict the longterm thermo hydraulic behavior of such fractured and karstified reservoir affected by different geothermal doublet and triplet arrays as well as smart. The effects of reservoir and aquifer size, permeability variations and flow path. This study evaluates feasibility of co 2storage in saline aquifers under different conditions. The drive energy is provided by an aquifer that interfaces with the oil in the reservoir at the oilwater contact owc. Similarly, for nonuniform properties, calculation of aquifer volume, and adjusting porosity may be one method. The modeling results indicate that the induced pore pressures in the arbuckle aquifer away from the injection well are of insufficient. Reservoir modeling team united states department of the. The reservoir model was described as a single well producing from the top of a. This study shows geological characterization and modeling of a co 2 storage aquifer near nagaoka, japan. Modeling guides groundwater management in a basin with riveraquifer interactions a scott valley study shows gains in understanding seasonal dynamics of groundwatersurface water fluxes as model tools address more complex natural phenomena. The software lets you start from a static 3d geological model and add dynamic data to create simulation models. The purpose is usually to predict the behavior of a reservoir to different production scenarios, or to increase the understanding of its geological properties by comparing known behavior to a simulation using different.