东沙隆起台地生物礁_滩油藏成藏条件及勘探思路探讨.pdf

2 6 1 Vo l26, N o. 1 2 0 0 7 1 J OU R NA L OF T RO PICA L O CEAN O GRA PH Y Jan . , 2 0 0 7 刘 军, 施和生, 杜家元, 高 鹏 ) , 5 10240) : , ) , , 3D , , , , , : ; ; ; ; ; : P7444 : A : 2007) 0 1002206 Forming conditions and exploration direction of reef oilgas pool in carbonate platform of Dongsha Massif LIU J un , SH I H esheng , DU J iayuan, GA O Peng ( CN O OC ( Chi na) L tdS henz hen , G uang z h ou 5 10240, China) Abstract: T he reef oilgas poo l in t he carbonate plat for m of Dongsha Massif is one of t he mo st impo rt ant ex plorat io n direct ions. Explor at ion pract ice indicat es t hat t his area has very g ood f orm ing condit ions, in cluding t he source rock of H uizhou sag, t he f ault sy st em t o t he deep lay er of sag, t he t ransport ing layer of Zhuhai f orm at ion sand , clear str ucture ridg e, bet ter reef r eser voir, and ideal regional cap rock of t he t hick overlying marine shale. Wit h new co verage of hig h accuracy 3D seismic data and new g eo logical int erpret a t ions of t he recent years, w e pro pose t o ex plo it updat ed g eo logical and geophysical t echniques to confirm the favor able ar ea of reef oil po ol, t o f ound a correct sediment at io n evaluat ion mode o f t he reef and carbon at e platf orm , and t o f ind mo re hidden reef and bank car bonat e t rap s over Dongsha Massif area. Key words: Dongsha Massif; carbo nat e plat f orm; reef oil pool; play; tr ap ; ex plorat io n direc