Tight gas reservoir characterization software

Characterizing natural fractures productivity in tight gas reservoirs. The role of petrophysics in unconventional reservoir characterization study and its interaction with other disciplines will be demonstrated. Reservoirs can be tight because of smaller grains or matrix between larger grains, or they might be tight because they consist predominantly of silt or claysized grains, as is the case for shale reservoirs. The upper green river tight gas reservoir in the uinta basin, northeast utah was chosen for the project as a suitable reservoir to test the seismic technologies. Tight gas reservoir limestone, dolomite, and tight sand development has been taking place since early 1992. Geosoftwares comprehensive portfolio covers the entire seismic reservoir characterization workflow. Characterizing natural fractures productivity in tight gas. The key reservoir characterization technology in strategic.

Beicip fracaflow, the most advanced package for fractured reservoir characterization, modeling and calibration on the market. One must determine what level of reservoir characterization is needed tooptimize production from tight reservoirs efficiently. Ghanizadeh a, aquino s, haeriardakani o, sanei h, clarkson cr. Tightflow production optimization of unconventional and tight. Tight gas reservoirs have one thing in commona vertical well drilled and completed in the tight gas reservoir must be successfully stimulated to produce at commercial gas flow rates and produce commercial gas volumes. The suite of advanced tools and workflows results in increased understanding of the reservoir and adds value through facilitating informed decisions. Vpvs estimation from multicomponent seismic data for improved characterization of a tight sandstone gas reservoir, rulison field, colorado.

Contains industryleading software tools for analyzing well performance in conventional, tight, shale and coalbed methane reservoirs. Pdf welltesting challenges in unconventional and tightgas. A full spectrum of gas reservoir engineering techniques is addressed and their application to a large variety of gas resource management options is discussed. Reservoir and hydraulicfracture characteristics are estimated with average errors ranging between 12. A case study of the shanxi formation in the northeastern ordos basin, china. Paper spe 171633 presented at the specsur unconventional resources conference, calgary, alberta, canada, 30 september2 october. An inverselooking neural network is developed for reservoir characterization of tightgas sand reservoirs. Fundamentals of gas reservoir engineering book osti. Tight gas reservoirs are generally defined as having permeability less than 0. The contribution of the presented study is to provide a methodology of characterization and reexploration of tight gas sands reservoirs of complex lithology based on unconventional concepts. This case study, then, represents at least part of an integrated workflow for reservoir characterization in tight gas and shale gas plays. As the maximum stress is the maximum horizontal stress, the intermediate stress is the vertical stress and the minimum stress is the minimum horizontal. Tight gas sandstones represent an important unconventional resource.

Introduction integrated workflows for shale gas reservoirs have received increased attention following the step changes achieved in operational efficiency over the last decade. The benefit of utilizing our technologies have been proven by operators worldwide. Modeling group of calgary numerical reservoir simulation software. Improved technology in drilling and completion has made it possible to produce gas from many tight sandstone reservoirs.

Tight gas reservoirs have one thing in commona vertical well drilled and completed in the tight gas reservoir must be successfully stimulated to produce at commercial gas flow rates and produce commercial gas. Dec 19, 2016 the petrophysics of tight gas sandstones petgas iii jip, coordinated by the industry technology facilitator itf in partnership with energie beheer nederland and petroleum development oman, hopes its research findings will substantially enhance the industrys ability to assess remote and stranded gas resources for economic viability. The objective of this project was to test and verify specific seismic methods to detect and characterize fractures in a naturally fractured reservoir. Integrated reservoir characterization and modeling. Uncovering the potential of thin, tight gas reservoirs in. Apr 17, 2019 this study focuses on a tight gas reservoir located in the glauconitic formation. An overview in indian context tarun kumar and ashutosh shandilya summary to sustain the supply of hydrocarbons resources world is looking towards unconventional reserves of hydrocarbon along with conventionals. Brito, 2012, improved reservoir characterization of tight gas sands through the 3d. As reservoir characterization workflows for shale gas plays evolve. The key reservoir characterization technology in strategic discovery of a giant ancient carbonate gas field in. Porosity averages from 5 to 10% with permeability between 0. Production and well testing analysis of tightgas reservoirs.

Characterization of the natural fractures generally includes estimating. The discovery of a giant ancient carbonate gas field the key reservoir petrophysical evaluation technology for the deep giant ancient vug. Thus, the sum of produced gas plus proven reserves adds up to 92 tcf. Rock flow dynamics tnavigator supports black oil, compositional and thermal compositional simulations for workstations and high performance computing clusters.

Gas adsorption, geomechanical law controlling aperture and conductivities can be. It gives an overview of the characteristics of tight gas sandstone reservoirs, and presents an integrated methodology for lithofacies analysis and modeling. Integrated reservoir characterization and 3d modeling of. Imaging and characterization of a shale reservoir in. Selecting drilling technologies and methods for tight gas. The paradigm reservoir characterization product portfolio has been specially designed to provide reservoir geoscientists with a full range of characterization, modeling and risk assessment solutions, to locate new prospects, identify drilling targets, optimize completions, and accelerate development. Integrated rock characterization of tight reservoir by multiple analytical techniques omprakash pal. Paradigm reservoir characterization solutions include. Coalbed methane, gas hydrates, shale gas, fractured reservoirs, and tight gas sands are considered unconventional resources. Reservoir characterization and exploration assessment of. Tightflow production optimization of unconventional and tight reservoirs. Reservoir characterization while drilling methods and software development. Our professionals have taught a broad range of core subjects and competencies.

Integrate and view datasets regardless of the source. Overview of tight gas field development in the middle east and north. Under the auspices of this project, ari utilized and refined this approach in tight gas reservoir characterization and exploratory activities in three basins. Selecting drilling technologies and methods for tight gas sand reservoirs authors nicolas pilisi. Petroteligence offers a wide variety of training courses and modules. The objective of this book is to bring together the fundamentals of gas reservoir engineering in a coherent and systematic manner. Commercially available software is used in the construction, simulation and analysis of the reservoir models. Abstract as compared to a well in a conventional gas reservoir, a well in a tight gas sand tgs reservoir will have a lower productivity index and a small drainage area. Production from unconventional petroleum reservoirs includes petroleum from shale, coal, tight sand and oilsand. The importance of water saturation has been further identified when the reservoirs refer to rocks with low porosity and permeability such as shale and tight. The formation of interest in the hoadley field rimbey, alberta, canada, has thickness of about 43 m at a total vertical depth tvd of 1892 m rafiq et al. Tight gas reservoirs an unconventional natural energy source.

The data required to run both models are similar and can be divided into two groups. A predictive approach for tight oil and gas exploration fujian ma. Tight gas basics most of us are familiar with traditional tight gas reservoirs clean, low porosity sandstones or siltstones that look unattractive on log analysis, at least by the conventional wisdom of the 1960s. We are eager to share our knowledge and have developed a series of highly effective training courses aimed at teaching practical reservoir characterization, reservoir simulation, reservoir management, enhanced oil recovery, field. Many tight gas sandstone formations are known as tease intervalsdthere is a gas show or gas kick but no or little production occurs on a conventional test. A reservoirengineering study for tight reservoirs requires us to balance data collectioncosts with the level of detail necessary to describe the reservoir accurately. Gem compositional reservoir simulation accurately replicates the physics and chemistry of a reservoir to assist in field optimization and overall recovery. In the process of fluid flow characterization in shale reservoir, two basic approaches were used.

Tight gas is the term commonly used to refer to low permeability reservoirs that produce mainly dry natural gas. Integrated reservoir characterization and 3d modeling of the. The primary focus of this report is the knowledge gained on natural fractural prediction along with practical applications for enhancing gas. The upper triassic xujiahe formation in the basin includes several tight gas sandstone reservoirs, whose porosity is less than 6. In regions where there is a drive to develop tight gas reservoirs, the margins for economic success are often finely balanced.

Evaluating factors controlling damage and productivity in tight gas reservoirs springer theses bahrami, nick on. Petroleum reservoir evaluation an overview sciencedirect topics. This course will help participants understand the engineering drivers on gas reservoir management and how a gas reservoir s value can be maximized through sound engineering practices. Many software, private, open source or commercial, are available for reservoir simulation. Diagenetic characteristics and reservoir quality in tight gas sandstones. Optimization of infill drilling in naturallyfractured tightgas. Annual report, fy 1987, author law, b e and spencer, c w and keighin, c w and lickus, m r and pollastro, r m and johnson, r c and nuccio, v f and charpentier, r r and wandrey, c j, abstractnote the objectives of us geological survey usgs work are to conduct geologic research characterizing tight gas. To evaluate a layered, tight gas reservoir and design the well completion, the operator must use both a reservoir model and a hydraulic fracture propagation model. Pdf reservoir characterization and origin of tight gas sandstones.

The phrase reservoir characterization is sometimes used to refer to reservoir modeling activities up to the point when a simulation model is ready to simulate the flow of fluids. Reservoir characterization of tight sandstones using nuclear magnetic resonance and incremental pressure mercury injection experiments. This course will cover the evaluation, completion, stimulation, along with the development of tight gas reservoirs. Petrophysical and geomechanical characteristics of canadian. Surface and downhole logging advanced tools, services, and expertise for logging any well. For unconventional reservoirs using wrong log analysis methods will be produced silly results, so the course will be guide to understand what type of unconventional reservoir. Quantify uncertainty in production forecasting and reservoir characterization using a probabilistic approach e. Jul 10, 2012 to evaluate natural fracture parameters in tight gas reservoirs, reservoir simulation is performed based on the field data from a tight gas reservoir, using the widely used commercial cmg computer modeling group of calgary numerical reservoir simulation software. We focus on different scales of reservoir characterization ranging from pore to core scale studies in the laboratory and well to field scale analyses using production and geologicalgeophysical data. Describing a relatively impermeable reservoir rock from which hydrocarbon production is difficult.

Introduction the reservoir characterization is a fundamental task for the determination of future reservoir performance. Crains petrophysical handbook tight gas reservoir analysis. Generate workflows for characterization of a conventional reservoir, tight gas reservoirs, and shale gas or shale oil. Proven reserves in tight gas reservoirs are 34 tcf. Keywords shale, petrophysical properties, water saturation, gep, lssvm 1. Welltesting challenges in unconventional and tightgas. Petrophysical and geomechanical characteristics of canadian tight oil and liquidrich gas reservoirs. The montney formation is a primary focus of unconventional gas reservoir in northeastern british columbia, western canada. Fracture modeling and fault zone characteristics applied to reservoir characterization of the rulison gas field, garfield county, colorado. Tight formations normally have production problems mainly due to very low matrix permeability and various forms of formation damage that occur during drilling completion and production operation. These reservoirs contain enormous quantities of oil and natural gas but pose a technology challenge to both geoscientists and engineers to produce economically on a commercial scale. Compared to traditional timedomain, sectored imaging and data analysis, depth imaging in the local angle domain a natural domain for geologists provides more reliable attributes for seismic characterization of reservoirs.

Our rich solution suite is used daily in oil and gas basins around the world to better understand the mineral composition, geomechanical fabric, facies distribution, and pore pressure distribution of the reservoir. Located in central china, the sichuan basin holds the biggest gas reserve in the country. May 12, 2017 tight gas sandstone samples are imaged at high resolution industrial xray computed tomography ict systems to provide a threedimensional quantitative characterization of the fracture geometries. This study focuses on a tight gas reservoir located in the glauconitic formation. Because a typical tight gas reservoir is a layered formation, it is necessary to determine values of reservoir properties, such as permeability, net pay, porosity, and water saturation on a layerbylayer basis. Schlumberger eclipse suite e100, e300, eadvanced eclipse is an oil and gas reservoir simulator originally developed by ecl exploration consultants limited and currently owned, developed, marketed and maintained by sis formerly known as geoquest, a division of schlumberger. Gti estimates the volume of technically recoverable gas from known u.

We are eager to share our knowledge and have developed a series of highly effective training courses aimed at teaching practical reservoir characterization, reservoir simulation, reservoir management, enhanced oil recovery, field development, and. Equationofstate hydraulic fracturing reservoir simulator for compositional and unconventional reservoir simulation modelling. A threedimensional shale gas reservoir model was created. A number of diversion techniques are available and each of them has certain advantages, disadvantages, and limitations wei et al. Can anyone advise on how to carry out core analysis for reservoir. One important decision to make in completing a tight gas sandstone reservoir is to select a diversion method table 14. Measurement of basic properties helps you determine if a rock contains a fluidfilled space porosity, identify the hydrocarbons in that space saturation, and assess the ability of those hydrocarbon fluids to be produced permeability. Furthermore, new methods proposed in this study are useful for the characterization of shale and tight reservoirs and can be applied to the relevant software. Coviz 4d quantitative visualization and analysis solutions for reservoir management. Overview of tight gas field development in the middle east.

Tight gas sands successful exploration starts here. Demystifying tightgas reservoirs using multiscale seismic data. Tight gas reservoirs contain a variety of formations, such as shale gas, tight sandstone, and carbonates, etc. The determination of water saturation is a key step for the reservoir characterization and prediction of future reservoir performance in. Ihs offers reservoir characterization software and data kingdom and petra to help you evaluate potential oil and gas reservoirs, and plan field development. Our software is tuned for performance in even the most computeintensive steps of the inversion workflow. The methodology hampsonrussell software is similar to that employed by pearson in. There is no fear of running out of oil or natural gas.

Evaluating factors controlling damage and productivity in. In naturally fractured tight gas reservoirs, gas is mainly stored in the rock matrix with very low permeability, and the natural fractures have the main contribution on total gas production. Fracaflow and pumaflow software are intensively used in this methodology for characterization and simulation of these unconventional and tight reservoirs. Multidisciplinary analysis of tight gas sandstone reservoirs. Use one of the most sophisticated tools for modelling hydraulically fractured reservoirs to accurately capture transient flow behaviour and to achieve better production forecasts. New methods to calculate water saturation in shale and tight. The importance of water saturation has been further identified when the reservoirs refer to rocks with low porosity and permeability such as shale and tight formations. Many of the low permeability reservoirs that have been developed in the past are sandstone, but significant quantities of gas are also produced from low permeability carbonates, shales, and coal seams. Customer logins obtain the data you need to make the most informed decisions by accessing our extensive portfolio of information, analytics, and expertise. Oil and gas reservoir characterization and analysis software. The gas produced through the year 2000 from tight gas reservoirs is estimated to be 58 tcf. In naturally fractured tight gas reservoirs, gas is mainly stored in the rock matrix. Then you may use a statistical software such as r, sgems, and gslib and.

The isis inversion software, which is utilized in the following case study, uses a simulated. Tight oil consortium toc is a multidisciplinary consulting team of reservoir characterization and engineering experts. New methods to calculate water saturation in shale and. I recently read two distinctly different articles particularly relevant to tight reservoirs.

At present, the term is used in reference to oil and gas resources whose porosity, permeability, fluid trapping mechanism, or other characteristics differ from conventional sandstone and carbonate reservoirs. A set of appraisal tools over its stages, the petgas jip has created a computerized reservoir consultant and a set of tools to help appraisal teams seek realistic petrophysical property analogs for reservoirs where. Gas reservoir management training course petroskills grm. Shale gas reservoir evaluation unit distribution of the chang 7 of the yanchang. Modeling and simulation of gas flow behavior in shale reservoirs. Table 1 lists the data required to run both the reservoir model and the fracture treatment design model. Today, the most common unconventional hydrocarbon resources are shale gas, coal bed methane, tight.

Blueback reservoir delivers consulting services and software solutions to the oil and gas market. Production of tight oil comes from very low permeability rock that must be stimulated using hydraulic fracturing to create sufficient permeability to allow the mature oil andor natural gas liquids to flow at economic rates. Geomodeling software is designed for use on key reservoirs that are being developed today. The monteith formation is an important tight gas reservoir in the deep basin, alberta, and consists of a progradational succession of shallow marine sediments, nonmarine carbonaceous and coaly, coastal plain facies, and coarsegrained fluvial deposits, from base to top, respectively. The carbontracker gas metering system is a new development in reservoir characterization for tight gas, underbalanced drilling operations. Analysis and development of tight gas reservoirs this course will provide participants with an overview of the analysis and development of tight gas reservoirs. Original article feasibility study on application of volume acid fracturing technology to tight gas carbonate reservoir development, nianyin li a, jinxin dai a, chao liu b, pingli liu a. Chapters 2, 3 and 4 are concerned with the basic physical properties of reservoirs and natural gas fluids, insofar as of relevance to gas reservoir engineering.

The determination of water saturation is a key step for the reservoir characterization and prediction of future reservoir performance in terms of production. Wireline pressure measurements improve reservoir characterization in tight gas formation in tight gas reservoirs, new wireline tools that use precise pretest mechanisms can achieve the required dataacquisition objectives. Integrated rock characterization of tight reservoir by. Core analysis services characterization schlumberger. Geology oil found in relatively impermeable reservoir rock. Since then, relatively thicker gas reservoirs have been commonly developed, and more challenging, very thin reservoirs are now being targeted. As the maximum stress is the maximum horizontal stress, the intermediate stress is the vertical. Many of the low permeability reservoirs that have been developed in the past are sandstone, but significant quantities of gas are also produced from low. Oil found in relatively impermeable reservoir rock. Our solutions are categorized into the four techniques described in the tabs below. The tool is trained with results from a large set of numericalsimulation cases. This course will provide participants with an overview of the analysis and development of tight gas reservoirs. Seismic and geophysical services that enhance reservoir characterization and monitoring throughout the life of the reservoir.

This chapter is the first to evaluate and model these types of reservoirs. Threedimensional quantitative fracture analysis of tight gas. Tight reservoirs are still in the early stages of becoming a dominant source of energy and economic growth throughout the world for years to come. Research aims to cut time and cost of characterizing tight. A predictive approach for tight oil and gas exploration. However, much of the same technology applies to tight carbonate and to gas shale reservoirs. Integrated approach for fracture characterization of. Seismic reservoir characterization reservoir software.