Kinky Vitrinite Reflectance Well Profiles: Evidence of Paleopore Pressure in Low-Permeability, Gas-Bearing Sequences in Rocky Mountain Foreland Basins: Discussion (1)

AAPG Bulletin ◽  
1990 ◽  
Vol 74 ◽  
Author(s):  
DOUGLAS W. WAPLES (2)
Keyword(s):  
Vitrinite Reflectance ◽  
Rocky Mountain ◽  
Low Permeability ◽  
Foreland Basins ◽  
Gas Bearing

scholarly journals Geochemical conditions of hydrocarbon accumulation in low-permeability shale sequences

2019 ◽  
Vol 98 ◽  
pp. 02005
Author(s):  
Vagif Kerimov ◽  
Rustam Mustaev ◽  
Uliana Serikova ◽  
Javidan Ismailov
Keyword(s):  
Retention Volume ◽  
Low Permeability ◽  
Hydrocarbon Accumulation ◽  
Shale Formations ◽  
Geochemical Conditions ◽  
The World ◽  
Organic Porosity ◽  
Kerogen Porosity ◽  
Rock Eval ◽  
Gas Bearing

The report is devoted to the study of conditions for the formation of organic porosity–void spaces of organic origin formed during transformation of the organic matter into hydrocarbons, and their role in the formation of hydrocarbon accumulation in low-permeability shale strata. The experience of studying and developing known shale formations of the world testifies to the fact that such strata are hybrid phenomena, that is, they are both oiland gas-bearing strata containing traditional and non-traditional accumulations of hydrocarbons. Based on the results of the programmed pyrolysis by the Rock-Eval-6 method, an estimate has been performed to quantify organic (kerogen) porosity. This estimate allows for determining the forecast retention volume of HCs generated during catagenesis.

COAL SEAM DEGASIFICATION IN QUEENSLAND UTILISING HYDRAULIC FRACTURING WITH FOAM—A CASE HISTORY

1981 ◽  
Vol 21 (1) ◽  
pp. 137
Author(s):  
B. Wilkinson ◽  
L. Barro
Keyword(s):  
Gas Flow ◽  
Gas Production ◽  
Low Permeability ◽  
Gas Flow Rate ◽  
Coal Seams ◽  
Flow Rates ◽  
Coal Deposits ◽  
Early Production ◽  
Design Calculations ◽  
Gas Bearing

Vast reserves of gas-bearing coal deposits are located in Queensland. Owing to the extremely low permeability and porosity of the coal, very low gas flow rates are normally encountered. In an effort to enhance the gas production to economic quantities and to degasify the coal to provide a safer mining environment, four experimental wells were drilled into coal seams near Blackwater, Queensland.Based on extensive laboratory testing of coal samples, computerised fracture design calculations were performed to determine a suitable stimulation programme. The wells were hydraulically fractured with up to 15 000 US gal of foamed stimulation fluid containing 75 per cent nitrogen. To prop open the induced fracture system, 15 000 lb of sand was pumped with the foam. The maximum concentration was eight pounds of 20-40 mesh sand per gallon of fluid. Gas production from the unstimulated wells was too low to measure. Early production data soon after the fracturing suggested a gas flow rate of approximately 50 Mcf/D.

Evaluation of Low-Permeability Gas-Bearing Formations in Rio Blanco County, Colorado

1973 ◽  
Vol 25 (10) ◽  
pp. 1125-1129
Author(s):  
Charles R. Boardman ◽  
Gregory W. Hammack ◽  
Walter H. Fertl ◽  
Charles H. Atkinson
Keyword(s):  
Low Permeability ◽  
Gas Bearing
Sign in / Sign up

Export Citation Format

Share Document