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  • Unconventional Oil & Gas

    Shale plays first come to mind when one considers unconventional resources. These unconventional resource plays may yield natural gas, gas condensates, and crude oil. Some of the more noteworthy shale plays in North America include the Bakken, Eagle Ford, Marcellus, Fayetteville, Woodford, Niobrara, Haynesville, Horn River, and Utica formations. Tight gas, coalbed methane, oil sands, and heavy oil are non-shale unconventional resources.

    SECTIONS

    Eagle Ford | Marcellus | Cline | Permian | Utica | Bakken | Woodbine & Eaglebine

    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
    Tight Gas

    Tight Gas News

    Gastar sells East Texas gathering system

    Nov 18, 2009

    Gastar Exploration Ltd. has sold its majority interest in the Hilltop Resort Gathering System to US Infrastructure LP for roughly $21.7 million.

    Patara, Contango partner to develop Cotton Valley reserves

    Oct 25, 2009

    Houston-based Patara Oil & Gas LLC signed a joint venture agreement with Houston-based Contango Oil & Gas Co.'s wholly-owned subsidiary, Conterra Co. to develop proved undeveloped Cotton Valley gas reserves in Panola County, Texas.

    Velocity Midstream Partners closes Berry East Texas midstream acquisition

    Jul 22, 2009

    Velocity Midstream Partners LLC finalized its acquisition of certain Berry Petroleum Co. midstream infrastructure assets.

    GMX Resources completes, tests latest Haynesville well

    May 12, 2009

    GMX Resources has completed the Verhalen "A" 2H Haynesville / Bossier horizontal well having a 4,198 foot lateral and 14 fracture treatment stages and an initial 24 hour production rate of 8.5 million cubic feet per day of gas, on a 14/64 choke and 4164 pounds of flowing casing pressure into the sales line. The first five Haynesville / Bossier wells have an average IP of greater than 8.3 MMcfd.

    El Paso keeps E&P budget flexible

    Apr 14, 2009

    Independent oil and gas company El Paso Exploration & Production expects to spend between $0.9 billion and $1.3 billion in 2009 depending on market conditions.

    Anadarko strikes oil at Heidelberg prospect

    Mar 1, 2009 Oil major Anadarko Petroleum has made an oil discovery at its Heidelberg prospect in Green Canyon block 859 in the deepwater Gulf of Mexico.

    Improving returns on tight gas

    Jul 1, 2007 Tight or unconventional gas represents a large remaining resource in North America.

    Private company executives sound off on operations

    Nov 1, 2005 Oil & Gas Financial Journal asked three private company officials about their operations, goals, and future plans.

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