Tight Gas Sands

Tight Gas Description ImageThe term tight gas sands refers to low-permeability sandstone reservoirs that produce primarily dry natural gas. A tight gas reservoir is one that cannot be produced at economic flow rates or recover economic volumes of gas unless the well is stimulated by a large hydraulic fracture treatment and/or produced using horizontal wellbores. This definition also applies to coalbed methane, shale gas, and tight carbonate reservoirs. Tight sands produce about 6 tcf of gas per year in the United States, about 25% of the total gas produced. The Energy Information Administration estimates that 310 tcf of technically recoverable tight gas exists within the US, representing over 17% of the total recoverable gas. Worldwide, more than 7,400 tcf of natural gas is estimated to be contained within tight sands, with some estimates as large as 30,000 TCF.

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Tight Gas News

Special Report: GAS SHALE—1: Seven plays dominate North America activity

Sep 28, 2009 Seven shale plays dominate today's North America natural gas potential reserves additions and production increases.

Special Report: Project start, completion dates become less definite

Aug 10, 2009 Many oil and gas development projects remain on schedule, but companies also have deferred many projects so that start-up and completion dates have become less certain.

Visual road map helps control drilling process

Aug 3, 2009 Drilling supervisors at GDF Suez E&P Deutschland GMBH have used a visual road map to control drilling operations since March 2008.

OGJ Newsletter

Jul 6, 2009

Special Report: Global turmoil reaches international LPG markets

Jun 22, 2009 Less than a year ago global LPG prices approached all-time highs. Since then, the global economy has moved into a recession, the world's largest LPG producer (the US) has undergone a major change in political leadership, and crude oil prices have collapsed.

EnCana banking heavily on unconventional gas, oil

Jun 15, 2009 Unconventional gas and oil plays represent the future for EnCana Corp. and the North American oil and gas industry, EnCana said May 27.

Special Report: Simultaneous operations develop Piceance tight gas

Jun 8, 2009 Williams Exploration & Production in recent years has changed the way it is developing the tight gas sands in the Piceance basin of Western Colorado.

API opposes efforts to federally regulate hydraulic fracturing

Jun 8, 2009 Proposed federal regulation of hydraulic fracturing under the Safe Drinking Water Act could add $150,000 to deep-well costs and reduce drilling, American Petroleum Institute officials warned on June 3.

EIA global outlook sees more use of unconventional sources

Jun 1, 2009 Unconventional sources including biofuels could provide nearly half of the growth in global liquid fuel supplies during 2006-30, the US Energy Information Administration said on May 27 in its latest International Energy Outlook.

OGJ Newsletter

May 11, 2009

HYDRAULIC FRACTURING— Conclusion: Additional keys give stimulation insights

Apr 6, 2009 Four keys provide a way for understanding, modeling, and predicting shear stimulation and its benefits in naturally fractured reservoirs.

HYDRAULIC FRACTURING—1: Natural fractures influence shear stimulation direction

Mar 23, 2009 Hydraulic fracturing in the presence of natural fractures causes a complex network of fractures to form because of shear and tensile failure.

US LNG imports in 2008 signal unexpected role for gas markets

Mar 9, 2009 Recent experience and forecasts have shown a narrowing gap between domestic natural gas supply and consumption, unfavorable oil-to-gas price disconnects, increasing competition for limited liquefaction capacity, and dampened domestic demand due to the current economic decline.

Special Report: New olefin-based drilling fluid improves operational, environmental profile

Mar 2, 2009 A nonaqueous drilling fluid system engineered with a low-viscosity synthetic internal olefin base resolved operational problems in drilling tight gas wells in the Basin Center area in Western Canada.

Operators report string of Gulf of Mexico discoveries

Feb 16, 2009 Operators in the Gulf of Mexico reported a string of discoveries in late January and early February 2009.

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