CAJ | 학술논문

综合运用铸体薄片、扫描电镜、粒度、测井、岩心等资料，对胜坨地区下降盘沙四上亚段沉积储层特征进行了分析。结果表明，胜坨地区下降盘沙四上亚段包括含砾砂岩、砾状砂岩、粗砂岩等岩石类型，以含砾砂岩、砾状砂岩最为发育。粒度概率曲线包括宽缓上拱式、低斜两段式，岩心观察可见重荷构造、块状层理、冲刷面、平行层理等沉积构造，反应重力流兼具牵引流的沉积环境。岩心分析表明该区砂砾岩体具有较低的成分成熟度和结构成熟度，孔隙类型以次生孔隙为主，孔隙结构以中孔中细喉型为主。
종합운용주체박편、소묘전경、립도、측정、암심등자료，대성타지구하강반사사상아단침적저층특정진행료분석。결과표명，성타지구하강반사사상아단포괄함력사암、력상사암、조사암등암석류형，이함력사암、력상사암최위발육。립도개솔곡선포괄관완상공식、저사량단식，암심관찰가견중하구조、괴상층리、충쇄면、평행층리등침적구조，반응중력류겸구견인류적침적배경。암심분석표명해구사력암체구유교저적성분성숙도화결구성숙도，공극류형이차생공극위주，공극결구이중공중세후형위주。
By analyzing manifold datum, including thin section analysis, scanning electron microscopy analysis, grain size analysis, log interpretation and core observation, the depositional feature and reservoir feature of E2S41 downthrown side of the Shengtuo area in Dongying depression were studied. The results shows that the reservoir there includes pebbly sandstone, psephitic sandstone, thick sandstone and so on. The probability cumulative grain size curves mainly include uphill arched pattern and bi-segment pat?tern. Sedimentary structures mainly include load structure, blocky bedding, scour surface and parallel bedding, etc, which reflects that the depositional environment has both gravity flowing deipsots and deep-water traction deposits. The study on core observation shows that the resevior has the composition and structure of low maturity card, which is medium porosity and low permeability reser?voir. The pore types mainly are secondary porosity.