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Title: Massive hydraulic fracturing experiments of the Devonian shale in Lincoln County, West Virginia

Abstract

The following preliminary conclusions were reached: Shale Stimulation Treatments - Hydraulically fractured wells will produce considerably more gas than wells stimulated with 80% gelled nitroglycerine. From a cost standpoint, the results suggest a single limited entry treatment in selected intervals is the preferred stimulation approach. The lower black shales contain significant producible gas. Large treatment sizes don't necessarily increase production proportionately and may cause extensive clean-up problems. Massive hydraulic fracturing may create economic gas production from undepleted Devonian shale areas near the test area. Devonian Shale Characterization - Mobile gas is mostly in the black or dark brown organic rich zones high in kerogen and uranium. Gamma ray and density logs can adequately locate these zones. Drilling and fracturing fluids do not affect the organic rich black Devonian shale; however, they do affect some gray shales. Rock properties show that the black shales fracture more easily than gray shales. The amount of potentially recoverable Devonian shale gas estimated by various methods ranges from 200 to 900 Tcf. The bulk of the recoverable shale gas appears to be adsorbed on the kerogen within the shale matrix. Devonian Shale Well Testing - Cumulative production curves on a log-log plot seem to providemore » the most reliable index of a well's long-term potential in this area. Normal reservoir pressure tests provide little useful data on hydraulically fractured shale wells. Because of potential damage related to fluid-formation interaction, excessive shut-in times required for testing could be detrimental if production is from fractures in the gray shales.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Columbia Gas System Service Corp., Columbus, OH (USA)
OSTI Identifier:
5887825
Report Number(s):
METC/CR-79/17
DOE Contract Number:  
EY-76-C-21-8014
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; BLACK SHALES; HYDRAULIC FRACTURING; NATURAL GAS; PRODUCTION; NATURAL GAS WELLS; WELL STIMULATION; ENHANCED RECOVERY; KEROGEN; WEST VIRGINIA; BITUMINOUS MATERIALS; CARBONACEOUS MATERIALS; CENTRAL REGION; CHATTANOOGA FORMATION; COMMINUTION; ENERGY SOURCES; FLUIDS; FOSSIL FUELS; FRACTURING; FUEL GAS; FUELS; GAS FUELS; GASES; NORTH AMERICA; OIL SHALES; USA; WELLS; 030900* - Natural Gas- Artificial Stimulation, Plowshare- (-1989)

Citation Formats

Cremean, S P, Forrest, R M, McKetta, S F, Morse, W F, Owens, G L, and Smith, E C. Massive hydraulic fracturing experiments of the Devonian shale in Lincoln County, West Virginia. United States: N. p., 1979. Web.
Cremean, S P, Forrest, R M, McKetta, S F, Morse, W F, Owens, G L, & Smith, E C. Massive hydraulic fracturing experiments of the Devonian shale in Lincoln County, West Virginia. United States.
Cremean, S P, Forrest, R M, McKetta, S F, Morse, W F, Owens, G L, and Smith, E C. Sat . "Massive hydraulic fracturing experiments of the Devonian shale in Lincoln County, West Virginia". United States.
@article{osti_5887825,
title = {Massive hydraulic fracturing experiments of the Devonian shale in Lincoln County, West Virginia},
author = {Cremean, S P and Forrest, R M and McKetta, S F and Morse, W F and Owens, G L and Smith, E C},
abstractNote = {The following preliminary conclusions were reached: Shale Stimulation Treatments - Hydraulically fractured wells will produce considerably more gas than wells stimulated with 80% gelled nitroglycerine. From a cost standpoint, the results suggest a single limited entry treatment in selected intervals is the preferred stimulation approach. The lower black shales contain significant producible gas. Large treatment sizes don't necessarily increase production proportionately and may cause extensive clean-up problems. Massive hydraulic fracturing may create economic gas production from undepleted Devonian shale areas near the test area. Devonian Shale Characterization - Mobile gas is mostly in the black or dark brown organic rich zones high in kerogen and uranium. Gamma ray and density logs can adequately locate these zones. Drilling and fracturing fluids do not affect the organic rich black Devonian shale; however, they do affect some gray shales. Rock properties show that the black shales fracture more easily than gray shales. The amount of potentially recoverable Devonian shale gas estimated by various methods ranges from 200 to 900 Tcf. The bulk of the recoverable shale gas appears to be adsorbed on the kerogen within the shale matrix. Devonian Shale Well Testing - Cumulative production curves on a log-log plot seem to provide the most reliable index of a well's long-term potential in this area. Normal reservoir pressure tests provide little useful data on hydraulically fractured shale wells. Because of potential damage related to fluid-formation interaction, excessive shut-in times required for testing could be detrimental if production is from fractures in the gray shales.},
doi = {},
url = {https://www.osti.gov/biblio/5887825}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {9}
}

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