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- Title
古潜山Z油田下古生界碳酸盐岩主控因素及储层发育模式.
- Authors
张岚; 王少鹏; 吴穹嫄; 唐何兵; 李卓
- Abstract
Carbonate rock bur-ied hill is one of the important oil-gas reservoirs in Bohai Sea. Taking Z Oilfield, the key development target in Bohai Sea area a$ an example〉the characteristics〉formation mechanism and geological development model of carbonate rock reservoir are comprehensively analyzed by using basic data such a$ drilling and logging, cores, microscopic thin sections and seismic data. The results show that the lithology of carbonate rock buried hill reservoir is mainly dolomite, with the reservoir spaces of inteiranular pore, fracture and dissolution pore. Carbonate rock buried hill reservoir is mainly controlled by sedimentary, diagenetic and structural factors. Combined with the characteristics of 4ri以e well and vertical karst zonation, the buried hill can be divided into surface weathering zone, vertical seepage zone and bedding dissolution zone. Under the influence of multiple factors such as diagenesis and structure, the reservoir in the upper oil formation is more developed than that in the lower, with full-region development for the former and limited development for the latter. The karst zoning and geological model of reservoir distribution provide the basis for next adjustment and potential tapping direction.
- Subjects
CARBONATE rocks; GEOLOGICAL modeling; CARBONATE reservoirs; RESERVOIR rocks; PETROLEUM reservoirs; DOLOMITE; PARAGENESIS
- Publication
Geology & Resources, 2023, Vol 32, Issue 1, p49
- ISSN
1671-1947
- Publication type
Article
- DOI
10.13686/j.cnki.dzyzy.2023.01.006