海洋地质前沿2017，Vol.33Issue(10)：9-21,13.DOI:10.16028/j.1009-2722.2017.10002
南海北部湾盆地迈陈凹陷中南部古近系储层特征与控制因素——以区域探井Y井为例
CHARACTERISTICS OF EOCENE RESERVOIRS IN THE SOUTH CENTRAL MAICHEN SAG, BEIBUWAN BASIN AND CONTROLLING FACTORS:A CASE FROM THE OUTPOST WELL Y
摘要
Abstract
The results of section identification,geophysical and well logging data from side-wall coring and debris of the borehole Y,that is located in the southwest Maichen sag of the Beibuwan Basin,suggest that the sequence penetrated by the hole are dominated by sandstone intercalating great amount of shale,siltstone and pelitic siltstone,and small quantity of conglomerate deposited near the proximity and middle part of the provenance.The Oligocene reservoirs in the Weizhou Formation,which are fine and rich in mud in genaral,are characterized by poor physical properties and weak diagenesis (A or B stage of eogenetic and A stage of middle diagenetic phase) As a whole,the effective porosity and permeability are low.However,the 2nd Member of the Liushagang Formation is a reservoir with certain amount of porosity and permeability.It is dominated by intergranular pore with intergranular dissolved pores as the subordinate.Feldspar corrosion pores are observed sometimes.The pores in the Changliu Formation are largely composed of intergranular pores,intergranular dissolved pores and small amounts of feldspar corrosion pores.The development of reservoirs is mainly controlled by the distance to provenance,sedimentation environment,and diagenesis.Diagenesis in general is weak.Compaction,dissolution and cementation are the main diagenetic processes which affect the reservoir properties.关键词
岩石学特征/储层物性/古近系砂岩储层/控制因素/迈陈凹陷中南部Key words
petrogeoloy/reservoir physical property/Eocene sandstone reservoir/controlling factors/south central Maichen Sag分类
天文与地球科学引用本文复制引用
于书友,何家雄,张伟,刘菊,李晓唐,刘志杰,张景茹,龚晓峰..南海北部湾盆地迈陈凹陷中南部古近系储层特征与控制因素——以区域探井Y井为例[J].海洋地质前沿,2017,33(10):9-21,13.基金项目
中石油南方石油勘探有限责任公司科技攻关项目(2011-NFZY-003) （2011-NFZY-003）
国家自然科学基金(41176052) （41176052）
