Multi-stage hydraulic fracturing and horizontal drilling have allowed a commercial amount of gas to be produced from shale. Decline Curve Analysis (DCA) is a familiar technique that is used to predict a future production rate for gas reservoirs. Especially when the only available data are production rates.
The Marcellus Shale is the basal unit of the Hamilton Group of the Appalachian basin, underlain by the Onondaga Limestone and overlain by the Mahantango Shale (i.e., Ettensohn, 1985). The Marcellus Shale well core used in this study is the Whipkey State #1 (WS) and was cored in September 2008 by Eastern American Energy Corporation, API ...
Driving this stunning ascent, according to research by the Pittsburgh Business Times, are five dominant producers: Marcellus Shale Producer. Number of active wells. Shale gas production in ...
Formed about 380 million years ago, the Marcellus Shale is a deep geologic formation that covers more than 95,000 square miles through parts of New York, Pennsylvania, Ohio and West ia. Pennsylvania is at the heart of the Marcellus Shale, with the formation underlying about 60 percent of the state. The Marcellus is found between 4,000 and ...
properties from well logs of the Marcellus Shale and the underlying Onondaga Limestone were compared over a larger area to highlight the importance of basal fracture barrier effectiveness in relation to production performance. Also, county scale 2D seismic will be shown and interpreted to help determine possible completion hazards.
The massive Marcellus shale is arguably the star of the Appalachian Basin plays. It is the largest and one of the deepest natural gas play in the United States, located directly under the Mahantongo and Tully Limestone formations. It also overlaps its neighboring shale to the north, the Utica.
The Union Springs Shale, Cherry Valley Limestone and basal Oatka Creek Shales onlap and pinch out on a tectonic high to the west. Organic-rich shale thickness increases from 20 feet in the west to 250 feet in the eastern part of the basin. ... The Marcellus Shale is absent from western NY where they onlap and pinch out and thickest …
Title goes here Working in partnership with industry, environmental professionals and local, state and federal regulatory agencies, the MSC hosts technical training sessions to help bring understanding to the regulatory, technical and safety processes to improve transparency and communications to avoid misconceptions about the industry. Check …
The Marcellus Shale is an organic- rich, sedimentary rock formation in the Appa-lachian Basin of the northeastern United States that contains significant quantities of natural gas.
Middle Devonian Marcellus Shale at the Mamont Prospect, Westmoreland County, Pennsylvania Ty Taylor ... Figure 3.5 TG calibrated on the basal part of the Mahantango Shale to 350 gas _ units. Calibration was used to help disclaim inaccurate gas _ response from mud-logging instrumentation (i.e., gas traps). ...
The Marcellus Shale lies under the Appalachian Basin, and spreads across New York, Pennsylvania, Ohio, West ia, Maryland, Tennessee, ia and Kentucky. The shale play is one of the largest in terms of geographic area, and the United States Geological Survey (USGS) estimates the formation's total area to be around 95,000 square miles, …
The Marcellus Shale forms the bottom or basal part of a thick sequence of Devonian age, sedimentary rocks in the Appalachian Basin. This sediment was deposited
in basal Marcellus Shale . Uranium & Thorium to Radium & Radon Radioactive Decay Series Radioisotope and half life . Drill Core Sample Analysis Lash and Engelder (2009) Gamma Log High TOC and abundant pyrite in basal Marcellus Shale • Elevated uranium and abundant pyrite in high-TOC black shale
York is a "shale gas" unconventional resource play, commonly described as having no obvious trap or seal and no water contact. The Devonian reservoir section in the case study area is the basal unit of four units within the Hamilton Group. Unlike the younger units, the Upper and Lower Marcellus shale contain high Gamma, high TOC
The Marcellus Shale is a rock formation that underlies much of PA & portions of New York & West ia; it is believed to hold trillions of cubic feet of natural gas. Until the recent advances in drilling technology & the rise in gas prices, this formation has long been considered prohibitively expensive to access.
The C org values are very high in the basal part of the Marcellus Shale, with a maximum value of 9 wt% (Table S1, Fig. 2). At a depth of 2393 m, both the C org and N bulk values increase sharply. The highest C org values of this interval are between 2393 and 2406.5 m core depths, which corresponds to the interval with the highest gamma ray ...
The shale sample in the Middle Devonian Marcellus formation was collected from an outcrop in Frankstown in Pennsylvania in the United States. For the outcrop samples, natural weathering would change the structure of organic matter and inorganic matter, and increasing atomic O/C value of organic matter (Copard et al., 2002, Lo and …
The Marcellus Shale extends into the northernmost part of the Appalachian basin in central New York. The organic-rich thickness of the Marcellus Shale increases from 20 feet in the west to 250 feet in the eastern part of the basin in New York (Smith and Leone, 2010). The depths of the Marcellus Shale range from zero to as much as 7,000 …
The process involves starting with vertical drilling followed by horizontal drilling. Vertical drilling ranges from 5,000 feet to 9,000 feet below ground depending upon the depth and thickness of the gas reservoir. When the Marcellus Shale is reached, the well is turned, and horizontal drilling occurs for another 3,000 feet to 10,000 feet or more.
natural gas reserves. In natural gas: North America. Its largest gas field, the Marcellus Shale, may have up to 14 tcm (500 tcf) according to some estimates. Spanning …
The Marcellus Shale is the basal unit of the Hamilton Group of the Appalachian basin, underlain by the Onondaga Limestone and overlain by the Mahantango Shale (i.e., Ettensohn, 1985). The Marcellus Shale well core used in this study is the Whipkey State #1 (WS) and was cored in September 2008 by Eastern American Energy …
The Marcellus Shale consists of gray shale and carbonaceous black shale (Wang and Carr, 2013). It is the basal unit of Hamilton Group, and was deposited during the Acadian orogeny (Lash and Engelder, 2011). The Marcellus Shale is rich in clay minerals such as illite and chlorite, and in siliceous minerals such as quartz and feldspar.
The Marcellus Shale forms the bottom or basal part of a thick sequence of Devonian age, sedimentary rocks in the Appalachian Basin. This sediment was deposited ... Marcellus Shale drill core from West ia, 3.5 inches in diameter, containing a calcite-filled vertical natural fracture. Photograph by Daniel Soeder, USGS.
The basal three images show silty laminations (dark) and pyrite (bright) in a Norwegian Sea shale (c), plus cross bedding and laminations (d and e) in Proterozoic shale from the Officer Basin. (2) High resolution micro-CT, works on the same principles of the conventional X-ray CT, but using smaller samples and a shorter distance between …
What Is Marcellus Shale. Marcellus Shale, or Marcellus formation, is shale that spreads across parts of Pennsylvania, New York, West ia, Ohio, Maryland, and ia. Lying under the Appalachian Basin, the Marcellus Shale is an important resource of natural gas. In PA, the exploration, development, and...
Abstract. Most published models for the Marcellus shale of the Appalachian basin show a great bias towards the Black sea depositional model for black shale sedimentation. Such an approach implies that organic-rich Marcellus shale facies were deposited in dysoxic to anoxic conditions in deep water environments. Recent …
Marcellus Shale Coalition® The Marcellus Shale Coalition® (MSC) works with exploration and production, midstream, and supply chain partners in the Appalachian Basin and across the country to address issues regarding the production of clean, job-creating, American natural gas from the Marcellus and Utica Shale plays. We provide in-depth …
Marcellus Shale was investigated as a storage reservoir for CO 2, ... One is a basal black shale resembling the Union Springs and another is an upper unit of gray shale. The mineral content is described as primarily quartz and clays, primarily illite, with lesser amounts of pyrite and calcium-rich minerals [17]. The overall average porosity is ...
Minerals | Free Full-Text | Produced Gas and Condensate Geochemistry of the Marcellus Formation in the Appalachian Basin: Insights into Petroleum Maturity, Migration, and Alteration in an Unconventional …
time about 390 million years ago (Harper, 1999). The Marcellus Shale is described as carbonaceous silty black shale that encloses scattered pyrite, carbonate concretions, and scarce fossils. ... The Middle Devonian Marcellus Formation is the basal member of the Hamilton Group and typically overlies the limestone of the Onondaga Formation ...
The Marcellus Shale became an important unconventional exploration target in the late 1970s and early 1980s following studies by the EGSP and was moderately tested in Pennsylvania and New York but yielded no significant field discoveries. ... the basal detachment zone occurred within the Devonian interval. It is proposed that this …
Abstract: The Middle Devonian Marcellus Formation of North America is the most prolific hydro- carbon play in the Appalachian basin, the second largest producer of natural gas …
