[PDF] Petrophysical Evaluation Of Hydrocarbon Pore Thickness In Thinly Bedded Clastic Reservoirs eBook

Author : John Dolson
Publisher : Springer
Page : 498 pages
File Size : 39,46 MB
Release : 2016-06-15
Category : Technology & Engineering
ISBN : 3319297104

GET BOOK

This book explains in detail how to use oil and gas show information to find hydrocarbons. It covers the basics of exploration methodologies, drilling and mud systems, cuttings and mud gas show evaluation, fundamental log analysis, the pitfalls of log-calculated water saturations, and a complete overview of the use of pressures to understand traps and migration, hydrodynamics, and seal and reservoir quantification using capillary pressure. Also included are techniques for quickly generating pseudo-capillary pressure curves from simple porosity/permeability data, with examples of how to build spreadsheets in Excel, and a complete treatment of fluid inclusion analysis and fluid inclusion stratigraphy to map migration pathways. In addition, petroleum systems modeling and fundamental source rock geochemistry are discussed in depth, particularly in the context of unconventional source rock evaluation and screening tools for entering new plays. The book is heavily illustrated with numerous examples and case histories from the author’s 37 years of exploration experience. The topics covered in this book will give any young geoscientist a quick start on a successful career and serve as a refresher for the more experienced explorer.

Author : Haytham El Atfy
Publisher : Springer Nature
Page : 295 pages
File Size : 48,13 MB
Release : 2022-12-05
Category : Science
ISBN : 3031163966

GET BOOK

This book is directed to those who are interested in petroleum geology, especially source rock from both academia and industrial societies. Our chapter-based book is written by a list of world-class subject-matter experts. The book includes recent advancements in analytical source rock characterization methods with some case studies. It is also used as part of a course curriculum or guide for source rock interpretation for all researcher categories. Significant improvement in the source rock characterization techniques in the last two decades and the knowledge is disseminated in a huge amount of papers and studies. The book intends to collect these recent advancements in one textbook to benefit students and researchers in general. In addition, it is supplemented by many case studies from all over the world that represent important data sets for the regional geology of these areas.

Author : Michael Poppelreiter
Publisher : AAPG
Page : 359 pages
File Size : 46,77 MB
Release : 2010-08-25
Category : Science
ISBN : 089181373X

GET BOOK

Borehole imaging is among the fastest and most accurate methods for collecting high resolution subsurface data. Recent breakthroughs in acquisition, tool design, and modeling software provide real-time subsurface images of incredible detail, from the drill bit straight to a workstation. This text portrays key applications of dipmeter and image log data across the exploration and production life cycle.

Author : Jianchao Cai
Publisher : Elsevier
Page : 354 pages
File Size : 32,12 MB
Release : 2019-01-24
Category : Business & Economics
ISBN : 0128172894

GET BOOK

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

Author : Vahid Shabro
Publisher :
Page : 396 pages
File Size : 44,17 MB
Release : 2013
Category :
ISBN :

GET BOOK

The main objective of this dissertation is to quantify petrophysical properties of conventional and unconventional reservoirs using a mechanistic approach. Unconventional transport mechanisms are described from the pore to the reservoir scale to examine their effects on macroscopic petrophysical properties in hydrocarbon-bearing organic shale. Petrophysical properties at the pore level are quantified with a new finite-difference method. A geometrical approximation is invoked to describe the interstitial space of grid-based images of porous media. Subsequently, a generalized Laplace equation is derived and solved numerically to calculate fluid pressure and velocity distributions in the interstitial space. The resulting macroscopic permeability values are within 6% of results obtained with the Lattice-Boltzmann method after performing grid refinements. The finite-difference method is on average six times faster than the Lattice-Boltzmann method. In the next step, slip flow and Knudsen diffusion are added to the pore-scale method to take into account unconventional flow mechanisms in hydrocarbon-bearing shale. The effect of these mechanisms is appraised with a pore-scale image of Eagle Ford shale as well as with several grain packs. It is shown that neglecting slip flow in samples with pore-throat sizes in the nanometer range could result in errors as high as 2000% when estimating permeability in unconventional reservoirs. A new fluid percolation model is proposed for hydrocarbon-bearing shale. Electrical conductivity is quantified in the presence of kerogen, clay, hydrocarbon, water, and the Stern-diffuse layer in grain packs as well as in the Eagle Ford shale pore-scale image. The pore-scale model enables a critical study of the [delta]LogR evaluation method commonly used with gas-bearing shale to assess kerogen concentration. A parallel conductor model is introduced based on Archie's equation for water conductivity in pores and a parallel conductive path for the Stern-diffuse layer. Additionally, a non-destructive core analysis method is proposed for estimating input parameters of the parallel conductor model in shale formations. A modified reservoir model of single-phase, compressible fluid is also developed to take into account the following unconventional transport mechanisms: (a) slip flow and Knudsen diffusion enhancement in apparent permeability, (b) Langmuir desorption as a source of gas generation at kerogen surfaces, and (c) the diffusion mechanism in kerogen as a gas supply to adsorbed layers. The model includes an iterative verification method of surface mass balance to ensure real-time desorption-adsorption equilibrium with gas production. Gas desorption from kerogen surfaces and gas diffusion in kerogen are the main mechanisms responsible for higher-than-expected production velocities commonly observed in shale-gas reservoirs. Slip flow and Knudsen diffusion marginally enhance production rates by increasing permeability during production.

Author : Joshua Christopher Bautista-Anguiano
Publisher :
Page : 0 pages
File Size : 17,28 MB
Release : 2016
Category :
ISBN :

GET BOOK

The Spontaneous Potential (SP) log has served for decades as a borehole correlation log and, under favorable circumstances, for the reliable in-situ assessment of water resistivity in rock formations of interest. Nevertheless, it is known from laboratory and field measurements that SP logs are sensitive to the presence of hydrocarbons. This report introduces the principles of SP log modeling using a mechanistic approach and describes their implementation in a SP log numerical simulator. Various synthetic and field cases verify the capabilities and improvement due to numerical modeling in the interpretation of SP logs. Quantification of hydrocarbon pore volume from SP logs is currently being validated with laboratory experiments. Those results and any modification to the models introduced in this document will be reported in a future doctoral dissertation. The main contribution and conclusions from this thesis originate from the presence of the electrical double layer (EDL) on the surface of mineral grains, its impact on SP measurements in the presence of hydrocarbons, and the utility and limitations it poses for the calculation of hydrocarbon pore volume and porosity. These petrophysical properties are independent of size. Thus, pore-size distribution and the volume of influence of the EDL in the pore space both determine whether SP logs will capture valuable information about hydrocarbon pore volume. Field cases are presented in which quantification of hydrocarbon pore volume is possible. Simulations made using the mechanistic principles presented in this work show consistency both in modeling and in comparison to measurements at the borehole scale. These field cases consider both water- and hydrocarbon-bearing formations in distinct petrophysical and geological environments. Calculations of hydrocarbon saturation and porosity are verified by the use of porosity and resistivity logs. The theory and results reported in this research highlight the importance of the EDL and the strong impact EDL has on improving interpretation of SP logs. Petrophysicists benefit from the possibility of mechanistically simulate SP logs that indicate the presence of hydrocarbon pore volume. This capability is useful in cases such as fresh-water environments where interpretation of resistivity logs may be problematic, or in mature hydrocarbon fields where only SP logs are available to the interpreter. The ability to simulate SP logs, particularly in mature hydrocarbon fields, offers a faster and less expensive way to evaluate new or overlooked gas or oil reservoirs.

Author : Toby Darling
Publisher : Elsevier
Page : 335 pages
File Size : 10,2 MB
Release : 2005-05-26
Category : Science
ISBN : 0080457959

GET BOOK

This hand guide in the Gulf Drilling Guides series offers practical techniques that are valuable to petrophysicists and engineers in their day-to-day jobs. Based on the author’s many years of experience working in oil companies around the world, this guide is a comprehensive collection of techniques and rules of thumb that work.The primary functions of the drilling or petroleum engineer are to ensure that the right operational decisions are made during the course of drilling and testing a well, from data gathering, completion and testing, and thereafter to provide the necessary parameters to enable an accurate static and dynamic model of the reservoir to be constructed. This guide supplies these, and many other, answers to their everyday problems. There are chapters on NMR logging, core analysis, sampling, and interpretation of the data to give the engineer a full picture of the formation. There is no other single guide like this, covering all aspects of well logging and formation evaluation, completely updated with the latest techniques and applications. · A valuable reference dedicated solely to well logging and formation evaluation.· Comprehensive coverage of the latest technologies and practices, including, troubleshooting for stuck pipe, operational decisions, and logging contracts.· Packed with money-saving and time saving strategies for the engineer working in the field.