Harris Presidency Will Be Bad News for Oil - 25 July, 2024 07:30 AM
US Democrats Launch Bill Holding Oil Firms Accountable for Any Work with OPEC - 25 July, 2024 07:30 AM
Manchin, Barrasso Unveil Bill to Ease Oil and Gas Permitting - 25 July, 2024 07:30 AM
Harris Hits Trump Over ‘Big Oil’ Ties - 25 July, 2024 07:30 AM
‘Oil Kills’ Protesters Disrupt Flights at Airports Across Europe in Wave of Action - 25 July, 2024 07:30 AM
Shallow water, deep gas: In the scramble to find and produce new gas resources, operators are looking to the Gulf of Mexico to save the day.
Noted oilmen to discuss their track records for discovering oil and gas fields in the Rocky Mountain region as Michel T. Halbouty Lecture series guests.
Salt Lake City is the site of the 88th AAPG Annual Meeting — and the program is as compelling as the setting is beautiful.
State-of-the-art seismic acquisition, processing and interpretation techniques continue to be keys that unlock the treasure for Forest Oil in South Africa.
State-of-the-art 3-D seismic technology led to a major gas discovery — and perhaps much more — in South Africa.
This month's column is titled '3-D Seismic Sweeps Through Time.'
They're young, they're old, male and female, company men and independent strivers. What, then, makes these varied people successful oil finders?
When a panel of experts talked in Austin about the future of oil and gas in North America, a surprising consensus emerged: Get ready for the age of natural gas.
Survey Sez? Analog analysis remains useful in the field.
What does past and present activities on the world's deepwater provinces tell us about the future? (Hint: The answer is 'a lot.')
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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