Prof. Bakshi Hardeep Vaid
School of Marine Sciences, Nanjing University of Information Science and Technology, China
Title: Role of ocean-atmosphere variability in modulating the precipitation variability over the South and East Asian monsoon regions
It is construed that the ocean-atmosphere variability of the tropics plays an imperative role in precipitation variability over the different time scales and considered as an essential component in impeding the predictability concerns associated with the South and East Asian monsoon. For example - A grimmer scenario unfolds when normal monsoon rain was predicted by forecasting models, but severe drought materialized for which no contingencies were in place and posthumous ocean-atmosphere variability especially on intraseasonal timescale found to be the notable cause for it (Vaid et al., 2018). Therefore to have a better comprehension of Asian monsoon predictability, it is highly recommended to resolve the concerns concomitant with limited understanding of the physical mechanism that supports the role of ocean-atmosphere variability on the diverse time scales (for example –intraseasonal to interannual and longer timescale); as it (Ocean-Atmosphere interaction) determine the limits on the predictability of the Asian monsoon system. This is indeed of significant importance because understanding of the ocean-atmosphere variability and its influence on monsoon variability is imperative for society. In this keynote speech, the ocean-atmosphere variability at shorter (intraseasonal) to longer time scale which also envisaged as a roadblocks in the predictability of the monsoon will be discussed with certain examples to bolster the role of ocean-atmosphere variability in ontogeny of the monsoon predictability.
Prof. Yonggui Wang
China University of Geoscience, China
AP Jalal Douraghinejad
Universiti Teknologi Petronas, Malaysia
Title: Facies and reservoir rock type determination of South Pars Gas Field, Iran
In total, there were 14 giant gas fields discovered in the Middle East and Asia during 1990’s. Including four of the five largest discoveries of all regions, three of which are in Iran, the other being in Azerbaijan. The largest one, South Pars Field is located on the Shelf Boundary with Qatar in the Persian Gulf, 100 km from the Iranian coastline. The size of the field within Iran is 3,700 square km, with a capacity of about 14 trillion cubic meters. The South Pars gas field contains 7% of the total world reserves of natural gas. Besides, the huge amounts of gas, additionally a significantly amount of oil is present. The gas is mainly in Kangan (Triassic) and Dalan (Upper Permian) Formations and the oil is in Carbonate Maddud Member, which is equivalent to Saravak Formation. The oil present in the south Pars Field is mainly found in Maddud, Upper Daryan and Lowere Daryan Formations. These three formations are around 2560m thick and the oil is generally heavy having 17-23API.
The sedimentological observation from core wells and thin sections revealed the presence of 16 facies types were identified. Evidences show that Dariyan Formation deposited in lagoon, small bioclastic shoals and narrow proximal and open marine environment. The rudist belt which was found in Shuaiba Formation of Abu Dhabi is not extended into Iran territory although they are seen in scattered forms within sediments of South pars Oil Layers. Maddud Member was deposited in shallow marine lagoon environment and small bioclastic shoal
Based on porosity, permeability and facies observed, 4 reservoir rock types are identified. They indicate excellent porosity and moderate(RT-2) to good(RT-3) range of permeability. Overall, it is found that although porosity is high however, the permeability is not sufficient for high production in South Pars Field of Iran.