Because of the TSR occurrence, the reaction occur acidic fluid with abundant H_2S and CO_2, meanwhile the TSR and its acidic fluids products (H_2S, etc) have strong corrosion, which alternated acutely the deep carbonate reservoir and improve the secondary poroes formation and and high quality reservoirs, So, the TSR occurrence is one of the key factors of Puguang gas field formation.
It is concluded that the fluid forming this type of copper-gold deposit is one high oxygen and sulphur fugacity and low-to-moderate temperature acid fluid.
Based on the research on nonmarine sandstone reservoirs of Baiguowan Formation, Upper Triassic, Xichang basin, it is proved that secondary porosity constitutes the main pore space of sandstone reservoirs and can be classified into three kinds of genetic porosity systems, namely those originated from multiple deep-burial dissolution by underground connate fluids, by acid fluid resulted from diagenesis of organic matters and by chemically corrosion fluids formed during oxidation-reduction reaction between hydrocarbons and mineral dxidants.
The density difference due to temperature changes resulted in the thermal fluids convection, which would produce deeply dissolved secondary porosity especially along southern area of S76-S72 wells.
Meanwhile the oil generating depression close to the south of the reef provided a plenty of oil source which together with subsurface organic acidic fluids may have multi migrated to the reef reservoir and further carried out deep buried organic dissolution to the paleokarst on the reef,which offered the most effective conditions and space at the right moment for the forming of effective porosity zone and oil gas migration and accumulation.
In this paper the dissolving behavior of solid sulfur in super / near-critical H2S-containing sour fluid mixtures is treated as a supercritical fluid extraction of solids.
By modifying the conventional mixing rule, a new thermodynamic model based on PR equation of state for solubility calculations is developed. The new model is used to correlate solubility data of solid sulfur in pure H2S, CO2 and CH4 as well as to predict sulfur solubility in H2S-containing sour fluid mixtures. It is shown that the proposed model is in agreement with the experimental data of this work and those from the literature.
Since a great deal of oil and gas was expelled from source rock, three diagenesis happened, calcite cementation, dissolution of feldspar, the matrix corrosion by acid.
The tropical carnivorous plant Nepenthes accumulates acidic fluid containing aspartic proteinase (AP) in its trapping organs (pitchers), suggesting that the plant utilizes insect protein as a nitrogen source.
In a system consisting of an alkaline and an acid fluid separated by a rubber membrane, p-dimethylaminoazobenzene passes the membrane in one direction only, namely from the alkaline to the acid fluid.
Beads coated with more than 6% (w/w) methacrylic copolymer plastisized with dibutyl sebacate and triethyl citrate resisted release in 2-hr acid fluid challenge and allowed immediate dissolution upon transfer to simulated intestinal fluid.
On the author's opinion,the pillow bodies in Bainaimiao Group is something of the kind of metasomatites similar to components of skarns due to the skarnization of surrounding rocks of rich calcareous and aluminiurn materials with acidic flows.The kind of metasomatites has no significance in stratigraphy and can not be dealt with as an independent unit of stratigraphy.
In this paper the dissolving behavior of solid sulfur in super / near-critical H2S-containing sour fluid mixtures is treated as a supercritical fluid extraction of solids. By modifying the conventional mixing rule, a new thermodynamic model based on PR equation of state for solubility calculations is developed. The new model is used to correlate solubility data of solid sulfur in pure H2S, CO2 and CH4 as well as to predict sulfur solubility in H2S-containing sour fluid mixtures.It is shown that the proposed...
The paper focuses on the metallogenic physicochemical conditions of the Zijinshan coppergold deposit in Fujian Province.The Zijinshan copper-gold deposit is the high-sulphur epithermal deposit,which is characterized by both the high argillaceous alteration of dickite and alunite and the copper mineral association of enargite, digenite and covellite.Based on the altered minerals,mineral association and mineral correlation of the Zijinshan copper-gold deposit,the author made an emphatical discussion on the ph...
酸性流体
acidic fluid
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