Scaling Accuracy of Laboratory Steam Flooding Models

Pujol, L.; Boberg, T.C.

doi:10.2523/4191-ms

Cited by 4 publications

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“…Scaled model studies are useful for clarifying and defining optimum well configuration and operating conditions for steam injection. The scaling of the 3-D model was performed by employing the formulas developed by Pujol and Boberg . The model selected for the tests was a hypothetical heavy oil reservoir drilled in a repeated seven-spot pattern.…”

Section: Scaling Of 3-d Modelmentioning

confidence: 99%

Seven-Spot Steam Injection Experiments in Heavy Oil Reservoirs Having a Bottom Water Zone

Bağcı

2005

Energy Fuels

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A 3-D scaled physical model was used to compare the performance of steam injection in reservoirs having a bottom water zone with the application of different well configurations. The model was triangular, designed to represent 1 / 12 of a seven-spot pattern in the Batı Kozluca field in Turkey. Nine experiments were conducted by using the triangular model with or without a bottom water zone. The well configurations were changed during the course of experiments to determine their effects on oil recovery. Bottom water thicknesses were changed to see the effects on oil recovery. The physical properties of a crushed limestone and crude oil (12.4°API) mixture were kept constant during the experiments. Steam was injected through a vertical well. Strings of thermocouples were used to observe the 3-D temperature distribution inside the model. The maximum oil recoveries were obtained by placing the horizontal producers along the hypotenuse of the triangular model. This well configuration provided better oil recovery than any other well configuration, even in the presence of a bottom water zone. Oil recoveries decreased with an increase in the thickness of the bottom water zone. The steam-oil ratio increased in the presence of bottom water. a V ) vertical, H ) horizontal, I ) injection, P ) production, (s) ) short perpendicular arm, (h) ) hypotenuse.

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Section: Scaling Of 3-d Modelmentioning

confidence: 99%

Seven-Spot Steam Injection Experiments in Heavy Oil Reservoirs Having a Bottom Water Zone

Bağcı

2005

Energy Fuels

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Upscale methodology for gas huff-n-puff process in shale oil reservoirs

Sheng

2017

Journal of Petroleum Science and Engineering

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Results of recent laboratory experiment studies suggest that huff-n-puff gas injection holds great potential to increase oil recovery from shale oil cores. However, our current knowledge of the field-scale performance of this process is very limited. Reservoir simulation is required to properly upscale this process from laboratory to field conditions in order to predict oil recovery and reduce the risk of failure in field projects. After examining the literature, the purpose of all upscale methods is to generate a single curve which can describe the relationship of oil recovery versus dimensionless time for different scales. For a gas huff-npuff process applied in a shale oil reservoir, it is also necessary to generate one single type curve to upscale a lab experiment to field-scale production. In this paper a new expression of dimensionless pressure was generated to describe the huff-n-puff efficiency, and a new version of dimensionless time was also derived that includes dimensionless pressure, permeability, porosity, viscosity, and core length. A compositional numerical model with dynamic gridding was built and validated by matching the experimental data, and the model was then used to test the upscale methodology. Several validation tests were conducted for different fluid and rock parameters, well constraints, and operation schedules. To this end, a type curve was developed for different scales which demonstrates that all sizes yield a similar relationship between oil recovery and dimensionless operation time. It proves that the cumulative oil recovery of gas huff-n-puff EOR in shale oil reservoirs can be predicted. In a case of high-permeability, the curve between oil recovery and dimensionless time deviates from the type curve (moves to the right side). This indicates huff and puff times are too long, and the process is inefficient. In this case, the huff and puff times can be reduced so that the curve follows the generated type curve.

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The Role of Screening and Laboratory Flow Studies in EOR Process Evaluation

Goodlett¹,

Honarpour²,

Chung³

et al. 1986

SPE Rocky Mountain Regional Meeting

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Thispaperwas selected forpresentation by an SPE ProgramCommitteefollowing review ofinformation contained inan abstract submitted by the author(s). Contents ofthepaper, as presented, have notbeen reviewed by theSociety ofPetroleum Engineers and aresubject tocorrection by the author(s). The material, ae presenfed, does nofnecessarily reflect anypoait!on ofthe%c!elyofPefroleum Engmeere,ita officers, ormembers,Papers preaentad atSPE meetingssresubject topublication review byEdtorial Commmeea oftheSociety ofPetroleum Engineers. Permission tocopyIS resfricfed loan abstract of not more than300words. Illustrations may notbe copied. The abatract should contain conspicuous acknowledgment ofwhere and by whom thepaperiapresented, WritePublications Manager,SPE, ABSTRACT displacements, the introduction of multiple capillary discontinuities significantly alters Numerous steps are involled in evaluating oil saturation distribution. Berea sandstone and enhanced oil recovery (EOR) methods for field sandpacks,widely used in petroleum research, are application. Technical screening guides are found to be more heterogeneousthan is consnonly consulted for Initial determination of believed. To accurately address the problems of applicability. This iS followed by a laboratory evaluation of individual EOR methods, comprehensiveanalysis of fluid, rock, and rock-appropriate laboratory apparatus and techniques fluid interactions. Prior to displacement should be designed and utilized. Concurrently,a studies, decisions concerning type of core, core realization of the limitationsof the laboratory size, and experimental apparatus are made model is necessaryfor accurate interpretationof considering scaling laws, dispersive effects, results obtained. duplication of reservoir conditions, and the unique parametersof the particularprocess being utilized. Experimental flooding techniques and INTRODUCTION interpretation of subsequent results are discussed for each type of EOR method. TheseSelecting and implementing an EOR method tests are based on those found in the published requires several steps (Fig. 1). Initially,with literatureand experience at this laboratory. a basic knowledge of reservoir properties and formation fluid characteristics, a technical EOR methods discussed include polymer,, screening guide is consulted for judging the surfactant-polyfner, alkaline flooding, thermal, possible applicability of a particular method. and miscible and inonisciblegas displacement. This is followed by crude oil characterization, The critical flow study parameters are considered injection water studies, and reservoir rock for each method. What can be learned from each property characterization. After selection of type 0: coreflood experiment is described and candidate methods, basic static tests are carried limitationsare given. Specific techniques used out* Methods which appear to be promising are in carrying out each type of coreflood experiment then subjected to flow studies in porous media are presented. The coreflooding aspects of where semi-realistic...

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Scaling Accuracy of Laboratory Steam Flooding Models

Cited by 4 publications

References 0 publications

Seven-Spot Steam Injection Experiments in Heavy Oil Reservoirs Having a Bottom Water Zone

Seven-Spot Steam Injection Experiments in Heavy Oil Reservoirs Having a Bottom Water Zone

Upscale methodology for gas huff-n-puff process in shale oil reservoirs

The Role of Screening and Laboratory Flow Studies in EOR Process Evaluation

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