水下分流河道

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 .

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 .

研究区PⅠ油层组沉积时由于水体变化频繁，水下分流河道经常变动，水流强度频繁变化，因此沉积旋回性明显。

When the sedimentary of PI group in the study area , water frequent changes , the distributary channel changes frequently and flow intensity frequent changes , so there are obvious sedimentary cycles .

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 );

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 .

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 .

水下分流河道砂体周期注水技术研究

Cyclic Water-flooding Technique Research on Sub-sea Distributary Channel Sands

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 .

从组合类型上看主要包括：（1）叠置的水下分流河道砂体；

According to association type the sandstones include ( 1 ) superimposed distributary channel sandstone ;

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 ;

指出中期基准面旋回的早期的短期基准面上升半旋回形成最有利储集砂体，沉积微相为三角洲平原分流河道和三角洲前缘水下分流河道。

Reservoir bodies are mainly composed of delta plain distributary channel and delta front sub-aqueous channel .

一个典型的水下分流河道砂体展布与油气富集规律

A typical case study on the sand body to subaqueous distribution river course and its oil enrichment

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 .

油气区水下分流河道内部建筑结构模式的建立

Establishment of the model for inter-architecture of underwater distributary channel in oil-gas area Diversion Discharge Calculation for Bifurcated River Stretch

砂体主要以顺源展布水下分流河道砂和河控薄砂为主。

The sand bodies mainly are underwater distributary channel sand and thin layers of river-controlled sand that developed along provenances .

由于受到不同期水下分流河道的切割，河口坝保持时间较短而欠发育。

As getting incision of underwater distributary channel in different period , debouch bar keeps short time and low development .

水下分流河道砂体中夹层的识别及定量分析&以靖安油田盘古梁长6油层为例

Quantitative analysis of interlayer in underwater distributary channel : analyzing the interlayers of Chang 6 reservoir in Jing ′ an Oilfield

绘制了长61、长62、长63油砂体的平面分布图，确定了水下分流河道的位置。

By drawing the distribution maps of the sand bodies , the location of the submerged distributary channel deposits are determined .

含油气砂岩段主要以三角洲前缘水下分流河道和水下分流河口砂坝沉积微相为主。

The environment of sandstone containing oil and gas includes underwater distributary 's channel and estuary dam in the delta frontier .

前缘相又可进一步细分为水下分流河道亚相，前缘砂亚相和边缘席状砂亚相。

The frontier facies can be subdivided into underwater distributary channel subfacies , frontier sand subfacies and marginal sand sheet subfacies .

平面上高孔、渗区和分流河道（水下分流河道）区具有良好的对应关系。

High porosity , permeability , and distributary channel ( underwater distributary channel ) region has a good correlation in the plane .

鄂尔多斯盆地北部延安组水下分流河道河口坝层偶型三角洲体系的沉积构成

The depositional architecture of the lacustrine deltaic system with subaqueous distributary channel-mouth bar couplets of the Yan'an formation in northern Ordos Basin

储集层性能受沉积相和成岩作用控制明显，以水下分流河道砂体储集性能最好。

Reservoir performance is controlled by sedimentary facies and diagenetic clearly , the underwater distributary channel sand reservoir is the best one .

近岸水下分流河道和远岸水下分流河道在研究区的分布较广。

Near - shore and far - shore under water distributary channel micro facies are relatively widely distributed in the study area .

物性最好的储层为河道、（扇）三角洲前缘水下分流河道及河口坝砂体。

Reservoir rocks in fluvial ,( fan ) delta-front subaqueous distributary channel and mouth bar , have the most effective reservoir properties .

扇三角洲前缘砂体类型以水下分流河道为主，局部发育河口坝。

The subaqueous distributary channel is the main type of the fan delta front while the channel mouth bar is developed locally .

三角洲前缘沉积组合识别出水下分流河道、水下分流河道边部和分流河口坝三种微相。

Delta front sedimentary assembled can be identified three microfacies : underwater distributary channel , underwater overbank deposits and distributary mouth bar .

主要沉积微相为水下分流河道、河口坝、远砂坝、席状砂、天然堤、决口扇等。

The main sedimentary microfacies comprise distributary channel , mouth bar , distal bar , blanket sand , natural levee and crevasse splay .

水下分流河道砂体是研究区最好的储集层，粒度粗，分选好，云母等软组分含量低，粒间孔发育。

Distributary channel sandstone is the best reservoir which has coarse granularity , good sorting , and low mica and develops intergranular pores .