心滩

黄河三角洲胜利Ⅰ号心滩的研究

Study on the Shengli ⅰ Channel Bar of Yellow River Delta

通过分析认为：太平口心滩存在被解体的可能；

From date analysis , it 's considered that Taipingkou Central Bar may be disintegrated ;

它们的发育深刻地影响和改造了边、心滩的沉积景观。

Their development influences and remakes the sedimentary views of the point bar and channel bar .

心滩守护前后泥沙运动规律及冲刷变形特性研究

Study on Sediment Movement and Scouring Deformation Scouring Deformation of Central Bar before / after Being Protected

辫状河沉积主要发育河道和心滩微相，泛滥平原微相不太发育。

The depositional sequences of braided rivers mainly consist of braided channel lag deposits and mid-channel bar sandstones .

心滩和河床滞留沉积微相上的气井，是剩余气分布的主要地方。

Between of the gas wells on beach heart and bed residence is the main local of distribution of remaining gas .

此外，还对地层沉积与埋藏环境进行了初步分析，认为这一大型霸王龙类接近原地在河流心滩处被埋藏、进而逐渐形成化石。

Moreover , the analyses of sedimentary and taphonomic environments reveal that the large tyrannosauroid was preserved in situ and buried in diara deposits .

划分出辫状河、曲流河和三角洲三大类沉积相和14种沉积微相类型，其中分流河道、水下分流河道、河口砂坝、心滩是主要的储集砂体沉积微相类型。

Three facies , including braided channel , meandering channel and delta , and 14 micro-facies are recognized . The distributary channel , point bar and mouth bar are the main reservoir type .

心滩沉积微相是最主要的有效储层沉积单元，其内部结构较均匀，伽马曲线表现为较平滑的低值箱状曲线特征。

Channel bar sedimentary micro-facies is most important effective sedimentary unit of the reservoir , the inner structure is more uniform and Gamma ray curves are characterized by more smooth and box with low amplitude .

粗砂岩主要分布在心滩微相和部分河道充填微相的底部，中、细砂岩主要分布在河道充填微相中。

The coarse grained sands are mostly distributed in the channel bars and the bottom of some channel filling sediments . The medium and fine grained sands are mostly distributed in the channel filling sediments .

气藏储集砂岩形成于水动力条件较强的河流心滩沉积环境，沉积物较粗，经历了较弱的压实压溶作用和较强的溶蚀作用，储层平均孔隙度和渗透率较高；

The coarse-grained gas sandstone reservoirs were deposited in channel bar setting with relatively strong hydrodynamic conditions and have experienced relatively weak compaction-pressure solution but relatively strong dissolution , thus they have high average porosity and permeability .

详细分析了有无护心滩建筑物时的水面线和流速分布特点、边界剪切应力在横向及整个测区的分布规律，着重研究了护滩前后脉动动能和相对紊动强度的分布规律。

It analyses in detail the water level and velocity distribution characteristics whether there exists a beach protection construction of the central bar , focuses on the distribution regularity of the boundary shear stress along the lateral sideway and the whole survey area .