Overview of Gas and Oil Resources in West Virginia

Transcription

1 Overview of Gas and Oil Resources in West Virginia Katharine Lee Avary West Virginia Geological & Economic Survey 304/

2 WV: Where It All Began Then 1858 Now Renewed Interest in Drilling and Production Activity 2008

3 West Virginia s location is ideal for northeast markets Source: Energy Information Administration

4 WV s gas and oil fields primarily in the western part of the State

5 Wells 19,000 feet or deeper; n=3!! $! Source: Location of well 19,000 feet or deeper WVGES database

6 Wells 10,000 feet or deeper; n=43! ( $ Source: Location of well 10,000 feet or deeper WVGES database

7 Coalbed methane Marcellus Shale Different age rocks of recent interest to oil and gas producers Trenton- Black River

8 Recent Trenton wells have been drilled in 10 counties Wood Jackson Roane Calhoun Braxton Putnam Wayne Lincoln Kanawha Clay Webster Completed well Permitted well

9 WV Trenton Gas Production 3,000,000 12,000,000 2,500,000 10,000,000 2,000,000 8,000,000 Mcf (annual) 1,500,000 6,000,000 Mcf (cumulative) 1,000,000 4,000, ,000 2,000, Year 0

10 WV Counties with Recent CBM wells reported; total 690 wells Mason Jackson Wood Wirt Roane Pleasants Ritchie Calhoun Ohio Marshall Wetzel Monongalia Marion Preston Tyler Gilmer Braxton Hancock Brooke Doddridge Harrison Lewis Upshur Taylor Barbour Randolph Tucker Grant Pendleton Mineral Hardy Hampshire Morgan Berkeley Jefferson Putnam Cabell Clay Kanawha Nicholas Lincoln Wayne Boone Fayette Mingo Logan Raleigh Summers Wyoming McDowell Mercer Webster Pocahontas Greenbrier Monroe Completed CBM well 09/2006

11 West Virginia CBM Gas Production Annual production, Bcf of Gas Cumulative production Cumulative gas production, Bcf Year Annual and Cumulative CBM production for WV; total 103 Bcf of gas; 2007 production >22 Bcf.

12 The Marcellus Shale Play What is it? Shale is a fine-grained sedimentary rock. The Marcellus is a particular rock unit which is Devonian in age.

13 A Play A play is defined as a group of geologically similar drilling prospects having similar source, reservoir and trap controls of gas migration, accumulation, and storage. Patchen, D.G., 1996, Introduction to the Atlas of Major Appalachian Gas Plays, WV Geological and Economic Survey, Volume V-25, p. 1. Modified from White, 1980; White, D.A., 1980, Assessing oil and gas plays in facies-cycle wedges: American Association of Petroleum Geologists Bulletin, v. 64, p , Oil and gas play maps in exploration and assessment: American Association of Petroleum Geologists Bulletin, v. 72, p

14 Marcellus Shale From Milici, USGS Open File Report

15 Historic Devonian Shale Gas Fields Legend Black/Gray Shale Fields Miles Black Shale Fields

16 Historic Devonian Shale Gas Fields and new Marcellus wells permitted in 2006 and 2007 Legend Black/Gray Shale Fields Black Shale Fields 2007 new Marcellus wells Miles new Marcellus wells

17 Huntersville/Oriskany Gas Fields Legend Miles Huntersville/Oriskany Oriskany Combination Oriskany Pinchout Oriskany Structure

18 Trenton- Black River play spurred additional deep drilling in last 15 years in limited areas. NY Hydrothermal Dolomite (HTD) PA OH WV Fractured Limestone (FLS) Legend Trenton Gas Fields ¹ 0 Miles

19 West Virginia Nomenclature TIME W Ohio Shale Bedford Shale Cleveland Member Upper Huron Member Lower Huron Member Java Fm. West Falls Formation Sonyea Formation Pipe Creek Shale Member Dunkirk Shale Member Angola Shale Member Rhinestreet Shale Member Cashaqua Shale Member Berea Sandstone Middlesex Shale Member West River Shale Mbr. Geneseo Shale Member Hampshire Formation Greenland Gap Group ( Chemung Formation) Brallier Shale E Burket Shale Mahantango Formation Tully (?) Limestone Corniferous Tioga ash bed Marcellus Shale Onondaga Limestone Huntersville Chert Oriskany Sandstone Helderberg Limestone

20 Extent of Marcellus, Rhinestreet, and Lower Huron Legend Marcellus thickness Marcellus extent Millboro extent Lower Huron extent $ Rhinestreet extent Miles

21 Locations of cross sections from USGS Bulletin 1909 $ Legend Well location Miles

22 Cross Section Chemung County, NY to Potter County, PA Cayuga Erie Wyoming Livingston Ontario Yates Seneca Cortland Tompkins Chenango Schuyler Steuben Cattaraugus Allegany Tioga Broome Chemung NY 76 PA 75 Susquehanna Bradford McKean Tioga Potter Wyoming 74 Sullivan Elk Cameron Lycoming Clinton Luzerne Clearfield e Columbia

23 SW Crosby Sandstone NE West River Shale Member Renwick Shale Member Geneseo Shale Member Tully Limestone Member Menteth Limestone Member Portland Point Limestone Member Moscow Shale Ludlowville Shale Tichenor Limestone Member Centerfield Limestone Member Skaneateles Shale Stafford Limestone Member Onondaga :Limestone Purcell Limestone Member Cherry Valley Limestone Member Marcellus Potter Co., PA Tioga Co., PA Chemung Co., NY Chemung Co., NY 100 ft.

24 Bedford Somerset Fayette Randolph Hardy Garrett Preston Grant Greene Roane Washington Fulton Lewis Braxton Belmont Noble Westmoreland Ritchie Tucker Pendleton Blair Hampshire Monroe Wirt Tyler Wetzel Gilmer Wood Harrison Allegany Harrison Upshur Marion Allegheny Guernsey Mineral Barbour Cambria Shenandoah Marshall Rockingham Washington Jefferson Calhoun Doddridge Monongalia Morgan Tuscarawas Huntingdon Webster Taylor Ohio Clay Indiana Carroll Pleasants Brooke Jackson Pocahontas Kanawha Highland Hancock Nicholas Cross Section Somerset County, PA to Gilmer County, WV PA WV MD OH

25 SW NE Sonyea Formation Genesee Formation Menteth Ls. Mbr. Rhinestreet Shale Member Cashaqua Shale Member Middlesex Shale Member Hamilton Group, undivided Renwick and Geneseo Shale members West River Shale Member Moscow & Ludlowville Shale undivided Tichenor Ls. Mbr. Tully Limestone? Moscow Shale Ludlowville Shale Skaneateles Shale Centerfield Ls. Mbr. Stafford Ls. Mbr. Purcell Ls. Mbr. Marcellus Shale Huntersville Chert Cherry Valley Ls. Mbr Gilmer Co., WV Lewis Co., WV Marion Co., WV Preston Co., WV Somerset Co., PA 100 ft.

26 Where is the Marcellus present in WV? It is present below the surface, at varying depths throughout much, but not all of WV. It is not present in extreme eastern or western WV. It crops out at the surface in parts of the Valley and Ridge province in eastern WV. It varies in thickness across WV.

27 -5700 Elevation of top of Onondaga Limestone, in feet Wayne Cabell Mason Lincoln Putnam Logan Mingo Jackson Kanawha Boone Wood Wyoming McDowell Wirt Roane Pleasants Ritchie Calhoun Clay Fayette Raleigh Mercer Tyler Gilmer Braxton Nicholas Summers Hancock Brooke Ohio Marshall Wetzel Doddridge Harrison Lewis Webster Greenbrier Monroe Monongalia Marion Upshur Taylor Barbour Pocahontas Preston Randolph Tucker Grant Pendleton Mineral Hardy Hampshire Morgan Berkeley The Onondaga Limestone immediately underlies the Marcellus, so knowing the elevation of the top of the Onondaga and the surface elevation at a particular location provides a way to estimate the depth of a well drilled all the way through the Marcellus Shale. Structure Contours on top of Onondaga in feet Jefferson Miles t from Cardwell, 1982

28 Outcrops of Marcellus The Marcellus is exposed at the surface in eastern WV as shown by the outcrop map. In the eastern-most counties, older rocks are exposed at the surface and the Marcellus is not present. From 1968 state geologic map

29 Thickness in feet and extent of Marcellus Shale in subsurface Area of thicker Marcellus Marcellus not present west of this line Marcellus not present east of here

30 For Further Information: WV Geological & Economic Survey, WV Department of Environmental Protection, Office of Oil and Gas,

31 WVGES Interactive Mapping Information on Devonian Shales including Marcellus Shale Using this application, you can determine where the Marcellus is present below the surface, the approximate depth to drill through the Marcellus, and the approximate thickness of the Marcellus. We cannot predict presence or absence of natural gas or quantities of gas with this application.