A开发区D区块BⅠ33^2单元的地层格架建立与初步认识

Primary Recognition and Stratigraphic Framework of Unit BⅠ3_3~2 in Block D of Development Area A

A开发区2010年以高分辨率层序地层学理论为指导,重构了A开发区BⅠ1-3沉积体系,研究发现C区块及其以北BⅠ323与D区块BⅠ323单元在油层组中的相对位置明显不同,原对比存在"窜层"。提出了D-E区块存在BⅠ32b3单元,并重新认识了BⅠ32b3单元储层发育特征。以该成果为指导,对D区块BⅠ33单元进行精细解剖,确定了BⅠ32b3单元在该区的平面分布范围和砂体平面分布特征,确保了该区BⅠ33划分标准与全区的统一。

Directed by the theory of high-resolution sequence stratigraphy,sedimentary system of BⅠ1-3in Development Area A is reconstructed.It is analyzed that there exist channeling layers,because relative position of BⅠ323in Block C and its north is obviously different from that in Block D.It is inferred that BⅠ32b3exists in Blocks D-E and its reservoir features are researched.Based on the above achievement,detailed study is carried out on the BⅠ33 Unit in Block D.Planar distribution and sand features of BⅠ32b3in the block are confirmed,it ensures dividing unification between BⅠ33and the whole area.