The concept of increased methane recovery with simultaneous CO 2 sequestration in
unconventional reservoirs like gas shales has been studied extensively. A clear …

Over the last 30 years, geochemical research has demonstrated that abiotic methane (CH4),
formed by chemical reactions which do not directly involve organic matter, occurs on Earth in …

中国火山岩油气藏勘探经历了偶然发现, 局部勘探, 全面勘探3 个发展阶段. 中国沉积盆地内发育
石炭系—二叠系, 侏罗系—白垩系和古近系—新近系3 套火山岩, 以火山熔岩 …

The origin of natural gases, in particular those containing methane (CH 4 or C 1), ethane (C
2 H 6 or C 2), propane (C 3 H 8 or C 3) and carbon dioxide (CO 2), is commonly interpreted …

The nine editions of Stable Isotope Geochemistry have appeared over a time span of nearly
50 years. The first edition (1973) appeared as a slim book of 135 pages. Due to the rapid …

Carbonate rocks (limestones and dolomites) constitute a major part of the geological column
and contain not only 60% of the world's known hydrocarbons but also host extensive mineral …

Horizontal drilling and hydraulic fracturing have enhanced energy production but raised
concerns about drinking-water contamination and other environmental impacts. Identifying …

Methane is the most abundant organic chemical in Earth's atmosphere, and its concentration
is increasing with time, as a variety of independent measurements have shown …

Bacterial and thermochemical sulfate reduction apparently occur in two mutually exclusive
thermal regimes, ie, low-temperature diagenetic environments with 0< T< 60–80° C and …

Methane occurrences in the Earth's crust are predominantly of biogenic origin, ie their
ultimate source is biologically formed organic matter. Methane can also form through …