We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
松辽盆地扶新隆起带北部扶杨油层地层水化学特征及其与油气富集关系.
- Authors
吴欣松; 唐振兴; 张琴; 赵家宏; 王武学
- Abstract
The hydrochemical parameter distribution of Fuyang payzone in the north of Fuxin uplift of Songliao Basin is very complicated, and the relationship with oil and gas accumulation is also quite different from other basins or other payzones in Songliao Basin. Through the statistics and correlation analyses of the hydrochemical parameters in different formations, different depth intervals, five genetic hydrochemical zones of the formation water are determined. Furthermore, the main controls of the formation water properties and distribution are determined based on the petroleum geology background analysis. The study shows that the properties of the formation water in north Fuxin uplift are mainly affected by the rock types of the sediment provenance, the thermal evolution of source rocks, the water-rock interaction in diagenesis and so on. Composition of the parent rocks dominated by acid magmatic and volcanic rocks is the prerequisite for the origination of NaHCO3 type formation water. Large quantity of organic acids expelled before the peak of hydrocarbon generation and the companying CO2 are the key factors affecting the origin of NaHCO3 type formation water. Production of the high salinity formation water of NaHCO3 type is closely related to the perfect condition for CO2 capturing and sealing in local anticline traps and the dissolution of the albite. The Na/Cl coefficient is a good indicator of the secondary pores caused by the dissolution of acid feldspar under the condition of enriched CO2 in formation water, and so it is an index of oil richness.
- Subjects
PETROLEUM geology; WATER-rock interaction; ORGANIC acids; VOLCANIC ash, tuff, etc.; WATER distribution
- Publication
Natural Gas Geoscience, 2022, Vol 33, Issue 6, p979
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672-1926.2021.12.005