Application of the base-level cycle principle in reservoir characterization:A case study of Sha1 Reservoir in Gongshanmiao structure in middle Sichuan;

Stratigraphic base-level cycles and physical properties of the reservoir sandstones in the Chang 4+5 and Chang-6 oil formations of the Upper Triassic Yanchang Formation in the Pingbei Oil Field, Shaanxi;

Features of sediment and reservoir in middle base-level cycles of Chang 6 reservoir set in Panguliang Oilfield;

Control of base level cycles on channel sand geometry: A case study on Zao Ⅱ-Ⅲ reservoirs,Zaoyuan Oilfield;

Suggestion on modification of the definition of base level cycle

The coal accumulation of lower member of Shanxi Formation,northeastern Ordos Basin has been researched according to principle of base level cycle on basis of analysis of outcrops,core description,and well log,and sedimentary facies analysis,base level correlation,condenses data controlling mapping were adopted.

Application of base-level cycles to sandstone-type uranium deposit:taking Dongsheng uranium deposits as an example;

According to the data of drill cores,outcrops and well loggings,two orders base-level cycles are recognized from Zhiluo Formation in Dongsheng area,which consist of 8～14 short-term base-level cycles and 3 mid-term base-level cycles, and their structural types and stacking patterns are discussed by using principles and methods of high-resolution sequence stratigraphic theory.

Using the data of dense well net in the oil development area,the features of the high resolution sequence stratigraphy of alluvial fan and the distribution patterns of sandbodies in different base-level cycles of Lower Karamay Formation(Middle Triassic)in the Karamay Oilfield of Junggar basin are studied.

Relation between infilling patterns of short-term base-level cycle and macroscopic reservoir heterogeneity-taking Chang6 to Chang7 turbidite fan of Yanchang Formation in Longdong area as an example;

Study on relation between sequence of short-term base-level cycle and reservoir property change model of Triassic Chang 6~8 oil reservoirs in Eastern Gansu, China;

Sequence analysis and isochronous correlation of the short-term base-level cycles in the third oil reservoirs of the Yanchang Formation in the Huachi Oil Field,Ordos Basin;

The recognition of base-level cyclic sequences in member 6 of Yanchang Formation,Upper Triassic in Zichang Area,Ordos Basin;

The oilbearing rock series are mostly made up of the second and third members of the Paleogene Shahejie Formation in the Bonan oil field, of which 0-9 sandstone beds in the middle and upper parts of the third member have been well documented, and may be divided into hierarchical stratigraphic baselevel cycles by using apparent resistivity curves.