Results 31 to 40 of about 1,473 (216)
The Chang 6 reservoir of Yanchang formation in Jingan oilfield has relatively poor quality: the porosity ranges mainly from 8 to 14%, and permeability ranges from 0.018 to 10.48 md, with a mean of 1.10 md, categorized as low porosity and low permeability
Bin Li +4 more
doaj +1 more source
Granite Hydrolysis to Form Deep Brines
Reaction path calculations suggest that water fixation by zeolite and chlorite formation can account for much of the high salinity of deep brines in contact with deep granites, as well as their Ca/Na ratios, which reflect the rock-dominated chemistry of ...
Patrick Brady +2 more
doaj +1 more source
Diagenesis of the Permian Fengcheng Formation in the Mahu Sag, Junggar Basin, China
The Fengcheng Formation in the Mahu sag of the Junggar Basin was primarily composed of detritus, pyroclastic material, carbonates, and evaporites. In order to establish the diagenesis pathways of the Fengcheng Formation, some methods of polarized light ...
Bin Bai +8 more
doaj +1 more source
Abstract When, where, and how much fluid is released from subducting oceanic crust control deformation, element cycling, and magmatism in subduction zones. However, the palimpsest of tectonometamorphic processes in the exhumed rock record complicates the relation of geologic observations to geodynamic models of subduction fluid sources and transport ...
P. C. Lindquist +4 more
wiley +1 more source
Abstract Changes in the physical state of water may alter fault frictional properties in high‐temperature geothermal systems, yet they have been little studied. Here, we perform slide‐hold‐slide experiments to examine the frictional properties (frictional strength μss and frictional healing Δμ) of chlorite‐altered basalt from Krafla Geothermal Field ...
W.‐H. Wu +5 more
wiley +1 more source
The reaction kinetics of laumontite under hydrothermal conditions
Quantification of the rate of mass transfer in diagenetic and hydrothermal systems requires a knowledge of the kinetics of mineral-fluid reactions at elevated temperature and pressure and at chemical conditions close to equilibrium. This communication describes an experimental study of the reaction kinetics of laumontite, a Ca-zeolite, at 80, 120 and ...
David Savage +4 more
openaire +1 more source
This paper discusses a new model concerning the precipitation mechanismand significance of anhydrite cement in tight sandstone. Anhydrite cement ismainly formed by the dissolution and reprecipitation of early‐diageneticcalcite cements, feldspars and volcanic rock fragments at the mesodiageneticstage.
Long Luo +10 more
wiley +1 more source
Experimental investigation of kinetics and rheology during diagenesis [PDF]
Two processes of enormous economic consequence occur within the upper to middle crust: the formation, migration, entrapment, and degradation of hydrocarbons, and hazardous seismicity. Substantial scientific evidence suggests that both these processes are
Liou, J. G., Hacker, B. R.
core +1 more source
Industrial oil and gas eruptions underwater have been found in the pyroclastic rocks of the Huoshiling Formation in the continental lacustrine basin of the Changling fault depression, Songliao Basin.
Yunqian Shi +10 more
doaj +1 more source
ABSTRACT Tubular and curviplanar structures, outlined by the occurrence of haematite/goethite, chlorite, quartz and albite, are developed in the Middle Permian Broughton Formation in the southern Sydney Basin, New South Wales, Australia. These structures are interpreted as fluid‐flow pathways resulting from the ejection of heated pore fluids as a thick
Paul F. Carr +5 more
wiley +1 more source

