三角洲前缘

GA层段顶部的地震振幅异常呈分散块状（河口砂坝）和弯曲带状（分流河道间三角洲前缘）；

The top of the GA interval shows patchy ( mouth bar deposits ) and curvilinear ( interdistributary delta front ) seismic amplitude anomaly .

储层为致密砂岩储层，平均孔隙度4.74%，渗透率0.417×10-3μm2；有利的储层微相是三角洲前缘水下分流河道、河口砂坝；

The reservoirs are tight sand , with an average porosity of 4 . 74 % and permeability of 0 . 417 × 10-3 μ m2 . Delta front underwater distributary channel and mouth bar are the favorable reservoir micro-facies .

Ⅶ油组以下（N1）主要为辫状河三角洲前缘-滨浅湖沉积；

Below VII oil measure ( N1 ) is dominated by braided stream delta front-shore saucer lake deposits ;

通过应用倾角散射程度与沉积环境的关系，对B凹陷沉积特征和物源方向进行了分析，得出B凹陷是受2条主河道控制的扇三角洲前缘辫状河道沉积；

According to the relationship between dip scattering strength and depositional environment , the deposition characteristic and the sand source direction of depression B were analyzed . The depression B is the deposition of a fan delta with braided river course which is controlled by two main rivers .

其中在C17n·3n极性亚期内，最大沉积速率可达220.2mm/ka。这主要发生在三角洲前缘的沉积物卸载区。

And the most deposital velocity was 220.2mm/ka during C17.3n sub-period , which mainly occurred at the unloaded area in the front of the delta .

进入河口区的泥沙约884%堆积在水下8km宽的三角洲前缘。

More than 88.4 % of the suspended silt into the river mouth area is deposited on the delta front slope of average 8 km in width .

II油组沉积时期具有近物源、粗碎屑、小水系的特征，工区位于扇三角洲前缘的朵体之上，物源来自NNE&NEE向（30～85o）。

From depositional view , oil set II is featured by close provenance , coarse grain , and short water system . The studied area lies on one lobe of fan-delta front , and its provenance is from the NNE or NEE ( 30 ~ 85o ) .

三角洲前缘（水下分流河道相和河口坝相）；

) delta front ( subaqueous channel and mouth bar fades );

坳陷湖盆三角洲前缘储层砂体成因研究

Genetic research of reservoirs at delta front in depressed lacustrine basins

不平坦的三角洲前缘席状砂&来自露头和地下的证据

Non-flattening Delta Front Sheet Sand & Evidence from Outcrops and Subsurface

三角洲前缘的水下分流河道砂岩为最优质的储集层。

Subaqueous distributary channel sandstones of delta front are fine reservoir .

扇三角洲前缘亚相由近端坝和远端坝沉积组成。

Fan delta front includes proximal and distal bar deposits .

浅水三角洲前缘平坦、开阔。

Shallow - water delta front is flat and widen .

优质储集层主要分布在三角洲前缘水下分流河道微相中。

The favorable reservoir mainly distributes in the delta-front submarine distributary channel .

坳陷湖盆三角洲前缘沉积微相构成及其分带性

The Microfacies Architecture and Zoning of Delta Front in Depressed-type Lacustrine Basin

整个研究区为三角洲前缘。

All the study area were delta front sedimentary system .

长期基准面下降半旋回主要由滨浅湖→三角洲前缘构成。

Its falling semi-cycle mainly consists of shore-shallow lake → . delta front .

沉积相是最主要的因素，三角洲前缘水下分流河道砂体是主要的储集体。

Major reservoir is sand bodies of subaquatic distributary channels in delta fronts .

其中三角洲前缘水下分流河道为骨架相。

Among them , underwater distributary channel in delta front was the main facies .

三角洲前缘砂体骨架的随机模拟

Stochastic modeling of sand framework of deltaic front

三南凹陷中西部地区和基东鼻凸是勘探的有利区带，有利相带为三角洲前缘水下分流河道及前缘滑塌体。

Subsea divided flow fluvial channel and slip block of delta front are favourable zone .

从成因类型上看，三角洲前缘砂体包括：（1）水下分流河道砂体；

The delta front sand stones include ( 1 ) subaqueous distributary channel sand stone ;

扇三角洲前缘地质知识库的建立及应用

Development and application of geological knowledge database for fan-delta front in the dense spacing area

北部发育三角洲前缘沉积。

Delta front occurred in the north .

相反，形态规则、保存完好的三角洲前缘反而不利于滑塌浊积岩的形成。

In contrast , the regular and good reserved delta front is disadvantaged to form fluxoturbidite .

扇三角洲前缘，包括水下分支河道、河道间沉积及滨岸和席状砂沉积；

Fan-delta front , including underwater dis-tributary channel , inter-channel , shoreline and sheet-like sand sediments ;

三角洲前缘韵律层特高含水期剩余油分布及调整

Residual oil distribution and reconciliation for delta front rhythm zone in extra high water cut stage

三角洲前缘亚相在MSCZ1都有存在，微相以水下分流河道和河口坝为主，其次为远砂坝微相。

Micro-phase are mainly underwater distributary channel and mouth bar , followed by the distal bar facies .

各旋回中的扇三角洲前缘亚相和水下扇扇中亚相是较好的储集相带。

Fan delta front subfacies and subaqueous medium fan subfacies of every cycle are good reservoir facies .

葡北油田四断块葡Ⅰ油组三角洲前缘储层结构特征研究

Reservoir Architecture Characteristics of Delta Front of Pu I Oil Group in Block 4 , Pubei Area