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

U.S. TAX CREDITS SPURRING COAL SEAM, TIGHT SANDS BOOM AMID CONTROVERSY

Oct 14, 1991 A.D. Koen Gulf Coast News Editor Federal tax credits have sparked a boom in U.S. drilling for gas contained in coal seams and tight sands. Some analysts say drilling for unconventional nonassociated gas accounted for as much as one third of all U.S. gas wells drilled in 1990. Production of unconventional gas is leaping, and this source is providing the biggest share of net gas reserves growth in the U.S. With the recent expansion of federal tax credits beyond coal seam gas to include tight

COMMENT ENSERCH CORP.'S BIEGLER: HOW TO DIAGNOSE U.S. GAS INDUSTRY'S ILLS

Oct 28, 1991 David W. Biegler President Enserch Corp. Dallas Adapted from an Oct. 1 speech to a Natural Gas Week conference in Houston. More and more, people are seeking some understanding of just what is happening in the U.S. natural gas industry. I have attempted to put a framework around today's natural gas industry in the form of a dozen "laws" that provide some insight. The future's not what it used to be.

COMMENT U.S. GAS PRODUCERS HAVE LITTLE CHOICE BUT TO SELL

Jan 13, 1992 Vinod K. Dar Dar & Co. Washington The first days of January bode ill for February U.S. natural gas prices. The winter continues, at best, to be seasonal. Storage has gone from a small cloud on the horizon to a grey pall across the natural gas landscape. Industrial gas demand remains weak because of a pedestrian economy. Tax induced deliverability continues to expand vigorously. Consequently, the price for Gulf Coast gas could dip below $1.30/MMBTU in February, which would be the lowest

ANALYSES POINT TO UNTAPPED POTENTIAL IN TIGHT GAS SAND

Apr 6, 1992 Frank E. Syfan Jr., Bradley M. Robinson S.A. Holditch & Associates Inc. College Station, Tex. The Davis sandstone, located in the Fort Worth basin of north-central Texas, has been identified as a potential candidate for additional reserve development, as a result of a reservoir/production performance study. The fluvial deltaic sedimentary environment found in the Davis is representative of approximately 40% of the tight gas sands found in the U.S.

BIG U.S. GAS PRODUCING STATES FAN PRORATIONING CONTROVERSY

May 4, 1992 The biggest gas producing states in the U.S. are embracing wholesale changes in prorationing rules. And their actions have stirred controversy and warnings among key energy lawmakers in Washington. The Texas Railroad Commission last week unanimously approved new rules for setting production volumes for gas wells. Texas is the country's No. 1 gas producer. TRC commissioners eliminated a system that prorated production based on monthly nominations by gas purchasers. But they left the door

U.S. DRILLING RECOVERY POSSIBLE AS OIL PRICES FIRM

Jul 27, 1992 G. Alan Petzet Exploration Editor Steady oil prices raise hopes for a second half recovery from record low drilling levels in the U.S. earlier in the year. Natural gas prices firmed this spring after a dismal low in February and were strong in July. Gas drilling is picking up in anticipation of expiration at yearend of federal tax credits for production from low permeability reservoirs. Oil & Gas Journal reckons wellhead revenues will total $77.8 billion for the year, 5% more than in 1991.

INDUSTRY ADJUSTS 1992 E&P BUDGETS

Jul 27, 1992 A midyear update of Salomon Bros.' survey of the petroleum industry's 1992 exploration and production budgets pinpoints the ways operators are adjusting outlays to match the times. The New York financial firm's latest tally shows: Operators have made deep cuts in their 1992 U.S. and Canadian E&P budgets since yearend 1991. Moderate increases budgeted earlier for E&P outside North America are intact. Many companies substantially underspent their budgets in first half 1992.

OGJ NEWSLETTER

Jul 27, 1992 There's some good news from the otherwise dismal U.S. oil scene. The Baker Hughes rig count climbed to 689 the week ended July 19, a 22 unit jump from the prior week, which had seen a 19 unit increase. That's the highest tally since 716 the week ended Jan. 17 but still down 17% from a year ago. And second quarter wasn't too bad for some companies reporting financial results.

ICF: CHANGE SECTION 29 TAX CREDITS

Aug 10, 1992 Federal tax credits for producing U.S. unconventional gas should be changed to restore original energy objectives of Congress, says ICF Resources Inc., Fairfax, Va. ICF suggests how Section 29 tax credits might be changed in an analysis drawing on a confidential survey of 60 producers of unconventional gas resources (UGRS) and two earlier ICF Section 29 studies. The analysis comes at a time when Section 29 incentives are stirring debate in Congress and controversy in the U.S. gas industry.

WORLDWIDE DRILLING SLUMP, BUT U.S. MAY PICKUP

Sep 21, 1992 Keith Rappold Drilling Editor The U.S. drilling industry has suffered another depression in 1992 to date, vet there are now signs of improving conditions. In June, the domestic drilling rig count dropped to its lowest level since the 1940s (OGJ, June 22, p. 36). One sign of an upturn, however, is a significant increase in the issuance of drilling permits since the first quarter of this year. The number of U.S. drilling permits issued increased 21.8% to 2,259 in July for 29 states tracked by

DEVONIAN GAS TECHNOLOGY-1 NEW TOOLS AND METHODS IMPROVE PRODUCTION POTENTIAL

Oct 5, 1992 Matthew E. Blauch, Jim J. Venditto, David E. McMechan Halliburton Services Duncan, Okla. Richard K. Smith Halliburton Services Kingsport, Tenn. Paul V. Hyde Columbia Natural Resources Inc. Charleston, W.Va. Perry A. Harris Halliburton Logging Services Charleston, W.Va. Experimental and novel techniques, tools, and data integration can provide cost-effective exploration and development strategies for producing long-term local low-cost gas from Devonian shales.

OGJ NEWSLETTER

Oct 12, 1992 Will Iraq be a market nonfactor long enough for world oil demand to catch up?

NEW FRACTURING TECHNIQUES REDUCE TIGHT GAS SAND COMPLETION PROBLEMS

Oct 12, 1992 Paul L. Bruce, Jeffrey L. Hunter Pennzoil Exploration & Production Co. Houston Robert D. Kuhlman Halliburton Services Duncan, Okla. Don D. Weinheimer Halliburton Services Houston New fracturing stimulation technology contributed to solving problems in completing tight gas sands in the Carthage Cotton Valley field in Texas. These technologies included improved fluid systems, computer-controlled proppant placement, multiple isotope radioactive logs, mechanical properties logs, and innovative

WATCHING WASHINGTON FINE PRINT IN THE ENERGY BILL

Oct 19, 1992 With Patrick Crow When President Bush signs the omnibus energy bill, he will enact a broad law to enhance production of renewable fuels, electricity, nuclear power, coal, and alternative fuels. The bill gives independent producers relief from the alternative minimum tax effective Jan. 1. There's nothing major in the bill for larger oil firms because legislators deleted chapters that would have allowed leasing of the Arctic National Wildlife Refuge and promoted natural gas production and

NONCONVENTIONAL FUEL TAX CREDIT APPLICATION DEADLINE APPROACHES

Oct 19, 1992 Frank W. Lewis Petroleum Management Systems Inc. Del City, Okla. Eric K. Steger East Central University Ada, Okla. The U.S. Federal Energy Regulatory Commission has established Dec. 31, 1992, as the deadline for producers to file Natural Gas Policy Act applications for gas produced from nonconventional fuel sources. Qualifying wells may receive tax credits ranging from 52/MMBTU to 92/MMBTU depending on the category and year of production. The most commonly eligible wells include tight

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