INFOGRAPHIC: Conventional vs. Unconventional Gas Exploration

THE DIFFERENCE BETWEEN CONVENTIONAL AND SHALE GAS WELLS IIII III Conventional gas Conventional gas is natural gas sourced from discrete fields or pools localized in structural stratigraphical traps by the boundary of gas and water. DEFINITION Shale gas Shale gas is natural gas that is found trapped within shale formations. Some of the gas produced is held in natural fractures, some in pore spaces, and some is adsorbed onto the organic material. PRODUCTION Conventional gas Shale gas Produces immediately after drilling reaches a reservoir Needs to be stimulated to produce hydrocarbons (for example by fracking) conventional gas resource hydraulic fracturing shale formation WELL DEPTH Conventional gas well Shale gas well up to approx. 8,000 feet deep* up to approx. 16,000 feet deep* 8,000 8,000. 16,000 . 16,000. THE ULTIMATE RECOVERY OF THE GAS IN PLACE Conventional gas Shale gas 60 - 80% 28 - 40% 100 100 80 80 60 60 40 40 20 20 WELL LIFE-SPAN Conventional gas well x 25 30 |YEAR approx. 25 to 30 years Shale gas well |YEAR approx. 5 years (without re-fracking) PRODUCTION DECLINE Conventional gas well 25 - 40% in the first year 25% 40% 100 XII Shale gas well 60 - 80% in the first year 60% (80% 100 XII WATER USAGE Conventional gas well Shale gas well 50 thousand to 100 thousand gallons up to 5 million gallons of water (including restimulation jobs)*** of water** 30 (equivalent to a 10th to a 5th of an Olympic swimming pool) (equivalent to a 10 Olympic swimming pools) COSTS OF OIL PRODUCTION*** Conventional gas Shale gas Oil from conventional supplies (Middle East and North Africa): between $10 and $25 per barrel to produce Oil from shale formations: between $50 to $100 per barrel to produce 10$ 10 $ 10$ 10 $ 10 $ 10 $ 10 $ 5$ 10$ 10 $ 1os 10 $ 10$ III II II II III IIIIII SHALE GAS INTERNATIONAL Shale Gas International - daily news and analysis about the business, development, and sustainability of unconventional gas and oil exploration worldwide. www.shalegas.international @ShaleGasInt * Source: U.S. Energy Information Agency ** Conventional wells use 50 to 100 times less water than in unconventional drilling, Source: Parliament of Canada, Standing Committee on Natural Resources *** Source: Chesapeake Energy **** Energy Agency, Paris, France Sources (unless otherwise stated): (VR)- Vicram Rao, "Shale Gas, The Promise and The Peril" (IGS) - James G. Speight, Phd, DSc, "Shale Gas Production Process" ==== ---- ==== - ---- ==== ==== - ----