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Bitumen/Heavy Oil (Oil Sands)

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Considering a career in industry? The oil and gas industry? In Exploration? Maybe Production? Perhaps Planning? This presentation of the Top Ten Tips for Working in Industry was developed during my 34 year career working for Mobil and ExxonMobil as a technical professional, supervisor, manager, and researcher. I’ll use examples and stories from my career, working with foreign governments in Azerbaijan and Kazakhstan, working in Mobil’s Headquarters in Fairfax, Virginia, being a supervisor and manager in exploration, and working as a senior research associate in ExxonMobil’s Upstream Research Company, recruiting for ExxonMobil at top American Universities interviewing students; and working as the Planning Manager, in Mobil’s Norwegian Affiliate in Stavanger, Norway. All of my experiences over the past 34 years have taught me how to be a successful in these fields, and I enjoy sharing these lessons with others who may be considering careers in the oil and gas industry.

Show more American Association of Petroleum Geologists (AAPG)
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Authigenic quartz overgrowths are the most common pore-occluding mineral in deeply buried (>2500 m) quartzose sandstones. But, deeply buried reservoirs of this kind in the North Sea contain more porosity than expected when the influence of authigenic microcrystalline quartz (microquartz, or the good quartz) is ignored. However, we know relatively little about the nature and origin of this porosity-preserving microquartz, which inhibits the bad and ugly quartz overgrowths from growing and occluding pores. Therefore, advanced analytical techniques have been utilized to improve our understanding of the controls on microquartz development in several examples where porosity is preserved in these and similar sandstone reservoirs.

In this study, several advanced analytical techniques were used to evaluate the crystallographic and compositional controls on the formation of microquartz. SEM/Cathodoluminescence (CL) confirms that (bad and ugly) quartz overgrowths have a complex growth history. Electron Backscatter Diffraction (EBSD) combined with Wavelength Dispersive Spectrometry (WDS) confirmed and elaborated on the complex growth history: the complex banding visible in CL is not due to changes in crystallographic orientation but more likely variations in quartz composition associated with changes in pore fluid composition and/or reservoir conditions. Finally, Secondary Ion Mass Spectrometry (SIMS) analysis provides oxygen isotope data providing insight into those initial reservoir conditions and temperature of formation of microcrystalline quartz.

Integrating the results from these advanced analytical techniques has developed an understanding of the processes controlling the formation of porosity-preserving microquartz and improved our ability to reconstruct the reservoir diagenetic history of microquartz growth leading to a proposed model for predicting porosity preservation in deep, hot sandstone reservoirs.

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Wildfires might be what come to mind when most people think of northeastern Alberta, owing to recent news coverage of the record evacuation of about 88,000 people from the Fort McMurray area. Current events notwithstanding, however, northeastern Alberta is historically best known for its huge bitumen resources.

American Association of Petroleum Geologists (AAPG)
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Hot pipes set me free! Tar sands, heavy oil, paraffin — three killers of mature fields. Finally, a simple and effective solution — hot pipes! It’s a great concept, but does it work? Here’s a continuation of an interview with Dr. Richard Snow, Pyrophase, who answers questions about their technology that helps stimulate flow in wells with paraffin or low-gravity oil problems.

American Association of Petroleum Geologists (AAPG)
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The solution to heavy oil and paraffin-clogged mature wells can often by heat, but heat is hard to economically introduce into a well. Welcome to an interview with Richard Snow, Chief Scientist at PyroPhase, whose new technologies are designed to economically heat the reservoir and allow the oil to flow.

American Association of Petroleum Geologists (AAPG)
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American Association of Petroleum Geologists (AAPG)
Desktop /Portals/0/docs/emd/reports/annual-meeting/2016-06-18/2016-06-18-EMD-AnnualMeeting-Committee-Bitumen-Heavy-Oil-Summary.pdf?pdfwidth=1000&pdfheight=1000&subpixels=true&page=1&format=jpg&width=100&height=100&mode=crop&anchor=topcenter&quality=90&encoder=freeimage&progressive=true&trim.threshold=255 Bitumen Heavy Oil Summary - EMD Annual Leadership Meeting - June 18, 2016
 
American Association of Petroleum Geologists (AAPG)
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Where is the oil? How much is there? and What is the best strategy for recovery?

These are a few of the questions that we'll answer at the Making Money with Mature Fields - Geosciences Technology Workshop, October 5-6, 2016, Houston, TX. The goal of this workshop is to review mature fields and to identify the amount and nature of oil that can be recovered, and to evaluate competing strategies for economically producing the remaining reserves. In addition to looking closely at fields, we will review new and improved technologies that may help revitalize reservoirs and overcome problems such as low pressure, paraffin, corrosion, and more.

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New products can revitalize under-performing wells in mature fields. However, it is important to understand precisely why the well is not producing and to select the treatment that will work for the unique conditions of the well.

Welcome to an interview with Olivia Carey, who has committed herself to finding new solutions for wells in need of revitalization. She discusses the products, candidate wells, and increased production using new products. 

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Registration is now open for the 4th annual Unconventional Resources Technology Conference (URTeC) to be held Aug. 1-3 at the Henry B. Gonzalez Convention Center in San Antonio, Texas.

American Association of Petroleum Geologists (AAPG)
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Online Training
21 May, 2009 21 May, 2009 1443 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-how-tight-is-your-gas.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
21 May 2009

This e-symposium introduces you to the practical benefits of thermal profiling for a variety of unconventional oil and gas projects, including tight gas sands, oil shale, low-gravity oil.

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Production from unconventional petroleum reservoirs includes petroleum from shale, coal, tight-sand and oil-sand. 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. These reservoirs store large volumes and are widely distributed at different stratigraphic levels and basin types, offering long-term potential for energy supply. Most of these reservoirs are low permeability and porosity that need enhancement with hydraulic fracture stimulation to maximize fluid drainage. Production from these reservoirs is increasing with continued advancement in geological characterization techniques and technology for well drilling, logging, and completion with drainage enhancement. Currently, Australia, Argentina, Canada, Egypt, USA, and Venezuela are producing natural gas from low permeability reservoirs: tight-sand, shale, and coal (CBM). Canada, Russia, USA, and Venezuela are producing heavy oil from oilsand. USA is leading the development of techniques for exploring, and technology for exploiting unconventional gas resources, which can help to develop potential gas-bearing shales of Thailand.

The main focus is on source-reservoir-seal shale petroleum plays. In these tight rocks petroleum resides in the micro-pores as well as adsorbed on and in the organics. Shale has very low matrix permeability (nano-darcies) and has highly layered formations with differences in vertical and horizontal properties, vertically non-homogeneous and horizontally anisotropic with complicate natural fractures. Understanding the rocks is critical in selecting fluid drainage enhancement mechanisms; rock properties such as where shale is clay or silica rich, clay types and maturation , kerogen type and maturation, permeability, porosity, and saturation. Most of these plays require horizontal development with large numbers of wells that require an understanding of formation structure, setting and reservoir character and its lateral extension.

The quality of shale-gas resources depend on thickness of net pay (>100 m), adequate porosity (>2%), high reservoir pressure (ideally overpressure), high thermal maturity (>1.5% Ro), high organic richness (>2% TOC), low in clay (<50%), high in brittle minerals (quartz, carbonates, feldspars), and favourable in-situ stress.

During the past decade, unconventional shale and tight-sand gas plays have become an important supply of natural gas in the US, and now in shale oil as well. As a consequence, interest to assess and explore these plays is rapidly spreading worldwide. The high production potential of shale petroleum resources has contributed to a comparably favourable outlook for increased future petroleum supplies globally.

Application of 2D and 3D seismic for defining reservoirs and micro seismic for monitoring fracturing, measuring rock properties downhole (borehole imaging) and in laboratory (mineralogy, porosity, permeability), horizontal drilling (downhole GPS), and hydraulic fracture stimulation (cross-linked gel, slick-water, nitrogen or nitrogen foam) is key in improving production from these huge resources with low productivity factors.

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