Download or read book Linking Petrophysical and Geomechanical Characterization to Production Behavior in the Haynesville Shale written by Silas O'Silas and published by . This book was released on 2019 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the Haynesville shale has become a target for natural gas exploitation, especially with the advent of horizontal drilling and hydraulicfracturing. Located in East Texas and Northwest Louisiana, it is believed to be one of the largest producing natural gas plays in the U.S., with estimated recoverable reserves of around 75 TCF according to the Energy Information Administration (EIA, 2011). Current total daily production for the entire play is around 5.4 Bcf/d. The economic potential of the Haynesville shale gas play is propelled by recent gradual rebounds in natural gas prices, increased industrial utilization of gas, and expansion of LNG export terminals along the gulf coast due to the lifting of the decades-old ban on exporting petroleum products. Consequently, it is imperative to properly evaluate the petrophysical attributes of the shale in order to understand the reservoir characteristics that may ultimately influence production. This study focused on the petrophysical evaluation of wells in East Texas and Northwest Louisiana. Wireline logs and core data were integrated to provide a predictive template for targeting and landing lateral wellbores within the shale in order to provide useful insight for hydraulic fracture stimulation with the view of optimizing production. The critical factors determined to influence the target zones include geomechanical properties such as brittleness, and geochemical properties such as the mineral volumes in the rock. These were calculated from logs using equations previously published in literature and correlated to nearby core measurements for verification. Already drilled and completed laterals were also evaluated to identify potential refracturing opportunities that could remedy production decline. The stimulation techniques and production outcomes of these laterals were examined in an attempt to identify possible trends and contrasts accordingly. The results show that the geomechanical properties vary across the shale play area. The geomechanical and geochemical properties can be useful in target selection for landing horizontal wells and effective fracture treatments, but they cannot by themselves guarantee productivity as other factors have to be taken into consideration such as completions method. The various operational constraints and development patterns such as different lateral lengths and age/style of completions make it difficult to do effective well-to-well production comparison; however the results points to trends such as longer lateral lengths with greater fracture stages to boost production. Additionally, in some areas, it has been established via the petrophysical analysis that there may be additional intervals in which to land a second horizontal well. This will surely lead to better exploitation and increased production from the reservoir.
Download or read book Characterization of Petrophysical Properties of Organic rich Shales by Experiments Lab Measurements and Machine Learning Analysis written by Han Jiang (Ph. D.) and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing significance of shale plays leads to the need for deeper understanding of shale behavior. Laboratory characterization of petrophysical properties is an important part of shale resource evaluation. The characterization, however, remains challenging due to the complicated nature of shale. This work aims at better characterization of shale using experiments, lab measurements, and machine leaning analysis. During hydraulic fracturing, besides tensile failure, the adjacent shale matrix is subjected to massive shear deformation. The interaction of shale pore system and shear deformation, and impacts on production remains unknown. This work investigates the response of shale nanoscale pore system to shear deformation using gas sorption and scanning electron microscope (SEM) imaging. Shale samples are deformed by confined compressive strength tests. After failure, fractures in nanoscale are observed to follow coarser grain boundaries and laminae of OM and matrix materials. Most samples display increases in pore structural parameters. Results suggest that the hydrocarbon mobility may be enhanced by the interaction of the OM laminae and the shear fracturing. Past studied show that the evolution of pore structure of shale is associated with thermal maturation. However, the evolution of shale transport propreties related to thermal maturation is unclear due to the difficulty of conducting permeability measurement for shale. This work studies evolution of permeability and pore structure measurements using heat treatment. Samples are heated from 110°C to 650°C. Gas sorption and GRI (Gas Research Institute) permeability measurements are performed. Results show that those petrophysical parameters, especially permeability, are sensitive to drying temperature. Multiscale pore network features of shale are also revealed in this study. Characterizing fluids in shale using nuclear magnetic resonance (NMR) T1-T2 maps is often done manually, which is difficult and subjected to human decisions. This work proposes a new approach based on Gaussian mixture model (GMM) clustering analysis. Six clustering algorithms are performed on T11-T2 maps. To select the optimal cluster number and best algorithm, two cluster validity indices are proposed. Results validate the two indices, and GMM is found to be the best algorithm. A general fluid partition pattern is obtained by GMM, which is less sensitive to rock lithology. In addition, the clustering performance can be enhanced by drying the sample
Download or read book Geomechanical Investigation and Characterization of a Utica Shale Producing Well in Southeastern Ohio written by Ian Laird Thomasset and published by . This book was released on 2018 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geomechanical Characterization of Marcellus Shale written by Rafael Villamor Lora and published by . This book was released on 2015 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given their potential applications for a number of engineering purposes, the geomechanics of shale reservoirs is becoming one of the most important issues in modern geomechanics. Borehole stability modeling, geophysics, shale oil and shale gas reservoirs, and underground storage of CO2 and nuclear waste are some of these potential applications to name a few. The growing interest in these reservoirs, as a source for hydrocarbons production, has resulted in an increasing demand for fundamental material property data. Laboratory analysis and constitutive models have shown that rock elastic and deformational properties are not single-value, well-defined parameters for a given rock. Finding suitable values for these parameters is of vital importance in many geomechanical applications. In this thesis an extensive experimental program to explore geomechanical properties of shale was developed. A series of triaxial tests were performed in order to evaluate the elasticity, yielding, and failure response of Marcellus shale specimens as a function of pressure, temperature, and bedding angle. Additional characterization includes mineralogy, porosity, and fabric. Rock samples used in this study came from three different locations and depths: one actual reservoir (~7,500 ft. deep), and two outcrops (~300 ft. and ~0 ft. deep).
Download or read book Geomechanical Characterization of Shale Using Nano indentation written by Vikas Kumar and published by . This book was released on 2012 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation Of Petrophysical Properties Of Gas Shale And Their Change Due To Interaction With Water written by Levent Yildirim and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas shale is a fine grained clastic, fissile sedimentary rock of gray/black color formed by consolidation of clays and silts. Successful petrophysical evaluation and stimulation treatments with horizontal drilling and hydraulic fracturing enable economic shale gas production. Shale gas development has contributed about 35 % of natural gas supply in US in 2013.Detailed evaluation of gas shales before and after stimulation treatments is a prerequisite to optimize gas production. Complex pore network in gas shales may result in inaccurate evaluation of petrophysical properties with traditional petrophysical models. Therefore, in this research we proposed a new methodology comprising a new understanding of evaluation of porosity, maturity analysis, geomechanical properties and initial gas in place calculations of gas shale via well logs and core analysis based on a new petrophysical model. We applied the methodology in a case study to investigate a Marcellus shale well in evaluating maturity, porosity and geomechanical properties to calculate initial gas in place and reserves and optimize stimulation designs. In the second part of this study, we conducted acoustic travel time measurements of Green River shale samples parallel and perpendicular to bedding plane before and after interaction with water to observe how shale interacts with water at different interaction times and bedding planes by analyzing change in acoustic velocity and mechanical properties before and after treatment to optimize stimulation designs. X-Ray diffraction analysis, scanning electron microscope imaging and horizontal and vertical permeability measurements of Green River shale samples using helium are conducted to characterize the samples by observing mineralogy, pore network and how permeability changes at different in-situ conditions. Therefore, the first and second parts of this research relate with utilization of well logs and core analysis to evaluate petrophysical properties of different gas shale formations.Maturity analysis, porosity evaluation and initial gas in place results of field case study of Marcellus shale show that total organic carbon content directly relates with porosity and adsorbed gas in place occupied in organic matter. Comparison of young's modulus and minimum in-situ stress values between Marcellus shale zone and adjacent boundaries are used for determination of stimulation interval in Marcellus Formation. An effective hydraulic fracturing treatment can be applied within the upper Marcellus Formation because of relatively higher minimum in-situ stress contrast between Stafford Limestone and upper Marcellus Formation. Closer porosity results of Marcellus shale when compared to that in literature and sufficient reserves suggest that density/resistivity separation method is more reliable than sonic/resistivity separation method. X-Ray diffraction and SEM images suggest that Green River Formation samples are dominantly comprised of carbonate minerals. Permeability measurements indicate that Green River Formation samples having very low permeability at various confining stresses needs to be stimulated effectively. Acoustic travel time measurements of Green River shale before and after interaction with water show that compressional and shear velocities increase as confining stress increases. Shear, young's and bulk modulus of Green River shale increase resulting in more rigid samples having more fracture conductivity as confining stress increases. Compressional and shear velocities decrease as Green River shale is exposed to water since minerals are dissolved by water solution and salinity of the samples decrease so that shear, young's and bulk modulus of the samples slightly decrease resulting in less rigid samples having lower fracture conductivity.The new methodology of petrophysical evaluation of gas shale based on the new petrophysical model serves a new understanding of evaluation of maturity analysis, porosity and mechanical properties and initial gas in place calculations of gas shale by utilizing well logs in field and core analysis in laboratory.
Download or read book Study about Petrophysical and Geomechanical Properties of Bakken Formation written by Jun He and published by . This book was released on 2016 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Unconventional Reservoir Geomechanics written by Mark D. Zoback and published by Cambridge University Press. This book was released on 2019-05-16 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of the key geologic, geomechanical and engineering principles that govern the development of unconventional oil and gas reservoirs. Covering hydrocarbon-bearing formations, horizontal drilling, reservoir seismology and environmental impacts, this is an invaluable resource for geologists, geophysicists and reservoir engineers.
Download or read book Petrophysical Characterization and Fluids Transport in Unconventional Reservoirs written by Jianchao Cai and published by Elsevier. This book was released on 2019-01-24 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Petrophysical Characterization and Fluids Transport in Unconventional Reservoirs presents a comprehensive look at these new methods and technologies for the petrophysical characterization of unconventional reservoirs, including recent theoretical advances and modeling on fluids transport in unconventional reservoirs. The book is a valuable tool for geoscientists and engineers working in academia and industry. Many novel technologies and approaches, including petrophysics, multi-scale modelling, rock reconstruction and upscaling approaches are discussed, along with the challenge of the development of unconventional reservoirs and the mechanism of multi-phase/multi-scale flow and transport in these structures. Includes both practical and theoretical research for the characterization of unconventional reservoirs Covers the basic approaches and mechanisms for enhanced recovery techniques in unconventional reservoirs Presents the latest research in the fluid transport processes in unconventional reservoirs
Download or read book Fundamentals of Gas Shale Reservoirs written by Reza Rezaee and published by John Wiley & Sons. This book was released on 2015-07-01 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides comprehensive information about the key exploration, development and optimization concepts required for gas shale reservoirs Includes statistics about gas shale resources and countries that have shale gas potential Addresses the challenges that oil and gas industries may confront for gas shale reservoir exploration and development Introduces petrophysical analysis, rock physics, geomechanics and passive seismic methods for gas shale plays Details shale gas environmental issues and challenges, economic consideration for gas shale reservoirs Includes case studies of major producing gas shale formations
Download or read book Deep Shale Oil and Gas written by James G. Speight and published by Gulf Professional Publishing. This book was released on 2016-09-10 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural gas and crude oil production from hydrocarbon rich deep shale formations is one of the most quickly expanding trends in domestic oil and gas exploration. Vast new natural gas and oil resources are being discovered every year across North America and one of those new resources comes from the development of deep shale formations, typically located many thousands of feet below the surface of the Earth in tight, low permeability formations. Deep Shale Oil and Gas provides an introduction to shale gas resources as well as offer a basic understanding of the geomechanical properties of shale, the need for hydraulic fracturing, and an indication of shale gas processing. The book also examines the issues regarding the nature of shale gas development, the potential environmental impacts, and the ability of the current regulatory structure to deal with these issues. Deep Shale Oil and Gas delivers a useful reference that today’s petroleum and natural gas engineer can use to make informed decisions about meeting and managing the challenges they may face in the development of these resources. Clarifies all the basic information needed to quickly understand today’s deeper shale oil and gas industry, horizontal drilling, fracture fluids chemicals needed, and completions Addresses critical coverage on water treatment in shale, and important and evolving technology Practical handbook with real-world case shale plays discussed, especially the up-and-coming deeper areas of shale development
Download or read book Petrophysics written by Erle C. Donaldson and published by Elsevier. This book was released on 2004-01-24 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt: The petroleum geologist and engineer must have a working knowledge of petrophysics in order to find oil reservoirs, devise the best plan for getting it out of the ground, then start drilling. This book offers the engineer and geologist a manual to accomplish these goals, providing much-needed calculations and formulas on fluid flow, rock properties, and many other topics that are encountered every day. New updated material covers topics that have emerged in the petrochemical industry since 1997. Contains information and calculations that the engineer or geologist must use in daily activities to find oil and devise a plan to get it out of the ground Filled with problems and solutions, perfect for use in undergraduate, graduate, or professional courses Covers real-life problems and cases for the practicing engineer
Download or read book Seismic Amplitude written by Rob Simm and published by Cambridge University Press. This book was released on 2014-04-17 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces practical seismic analysis techniques and evaluation of interpretation confidence, for graduate students and industry professionals - independent of commercial software products.
Download or read book Muds and Mudstones written by Andrew C. Aplin and published by Geological Society of London. This book was released on 1999 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shale Oil and Gas Production Processes written by James G. Speight and published by Gulf Professional Publishing. This book was released on 2019-11-18 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shale Oil and Gas Production Processes delivers the basics on current production technologies and the processing and refining of shale oil. Starting with the potential of formations and then proceeding to production and completion, this foundational resource also dives into the chemical and physical nature of the precursor of oil shale, kerogen, to help users understand and optimize its properties in shale. Rounding out with reporting, in situ retorting, refining and environmental aspects, this book gives engineers and managers a strong starting point on how to manage the challenges and processes necessary for the further development of these complex resources. Helps readers grasp current research on production from shale formations, including properties and composition Fill in the gaps between research and practical application, including discussions of existing literature Includes a glossary to help readers fully understand key concepts
Download or read book Applied Petroleum Geomechanics written by Jon Jincai Zhang and published by Gulf Professional Publishing. This book was released on 2019-06-15 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applied Petroleum Geomechanics provides a bridge between theory and practice as a daily use reference that contains direct industry applications. Going beyond the basic fundamentals of rock properties, this guide covers critical field and lab tests, along with interpretations from actual drilling operations and worldwide case studies, including abnormal formation pressures from many major petroleum basins. Rounding out with borehole stability solutions and the geomechanics surrounding hydraulic fracturing and unconventional reservoirs, this comprehensive resource gives petroleum engineers a much-needed guide on how to tackle today’s advanced oil and gas operations. Presents methods in formation evaluation and the most recent advancements in the area, including tools, techniques and success stories Bridges the gap between theory of rock mechanics and practical oil and gas applications Helps readers understand pore pressure calculations and predictions that are critical to shale and hydraulic activity
Download or read book Geologic Analysis of Naturally Fractured Reservoirs written by Ronald Nelson and published by Elsevier. This book was released on 2001-08-24 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geologists, engineers, and petrophysicists concerned with hydrocarbon production from naturally fractured reservoirs will find this book a valuable tool for obtaining pertinent rock data to evaluate reserves and optimize well location and performance. Nelson emphasizes geological, petrophysical, and rock mechanics to complement other studies of the subject that use well logging and classical engineering approaches. This well organized, updated edition contains a wealth of field and laboratory data, case histories, and practical advice. A great how-to-guide for anyone working with fractured or highly anisotropic reservoirs Provides real-life illustrations through case histories and field and laboratory data
