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- The reservoir quality is strongly influenced by the depositional facies and diagenesis of the Chang 2 sandstones of braided river facies in Qinghuabian oil field. 摘要青化砭油田上三叠统长2辫状河砂岩储集层物性主要受沉积相及成岩作用的控制。
- The P 1 x - s Formation of Permian in the northern Hangjinqi area was characterized by major litharenite of braided river and meandering river facies,and overlain on the metamorphic crystalline basement of Archean. 鄂尔多斯盆地北部伊盟隆起杭锦旗地区二叠系 P1 x - s直接覆盖在太古界变质结晶基底之上 ,为一套辫状河沉积和曲流河沉积砂岩。 砂岩以岩屑砂岩为主。
- Keywords Ordos basin;river facies;braided river;depositional model;deltaic plain facies;sand body; 鄂尔多斯盆地;河流相;网状河;沉积模式;三角洲平原相;砂岩体;
- braided river facies 辫状河沉积
- As a result, 6 major sedimentary systems are i-dentified, which are flood plain, fan-delta, braided river delta, delta, sublacustrine fan and lake facies. 其结果,识别出6种主要沉积体系类型,即泛滥平原、扇三角洲、辫状河三角洲、三角洲、湖底扇及湖泊相。
- Alluvial fan, fluvial, lake, fan delta, braid river delta and meandering river delta facies sediments are widely developed in Jurassic in Turpan-Hami basin. 吐哈盆地侏罗系广泛发有冲积扇、河流、湖泊、扇三角洲、辫状河三角洲及曲流河三角洲相沉积。
- Upper Guantao formation in Laohekou oilfield of Shengli oil province is a typical reservoir of fluvial facies with major oil - bearing system containing meandering and braided river sedimentation. 胜利油区老河口油田的馆上段为典型的河流相油藏,主力含油层系存在曲流河沉积和网状河沉积。
- Fan deltas distributed in gently slopes and braided river deltas develop alternately in all stages. 在整个湖泊阶段，缓坡的扇三角洲和辫状河三角洲砂体交替出现。
- There were three times of sea-level fluctuation corresponding to the paleo-climate evolution, which had formed the sediments of alternative sea and river facies. 晚更新世以来的三次海平面升降变化造成了潍河下游地区海陆沉积环境交替，形成了巨厚的海陆交互相沉积层。
- Main factors effecting on flow rate in braided river is gardient of anabranch,area of water,roughness and velocity. 影响汊道分流比的主要因素有：两汊的比降、过水断面积、糙率、流速等。
- River facies and sand bank facies dist ributed in the middle of J inhuaQuzhou Basin , locating in sectors between Quxian and Longyou. 河流及沙洲相分布于盆地中部 ,即衢县和龙游之间的区段 ;
- Braided river deltas are concentrated in the falling hemi-cycles of base level and turbidite fans in the rising hemi-cycles. 中期基准面旋回下降期辫状三角洲发育，上升期浊积扇发育；
- Member 2 in Shanxi formation of Permian system in Yulin gasfield is the mainly gas reservoir,was deposited in a braided river of delta enviroment. 榆林气田主力气层山西组2段为一套辫状河三角洲沉积,储集岩主要为石英砂岩、岩屑石英砂岩。
- Sandbodies of highstand system track include highstand, the slope breaks control forming and distribution of fan-delta, braided river delta and tur. 坡折带控制了高位体系域内扇三角洲、辫状河三角洲及湖底扇砂体的形成与分布,使得高位域砂体形成上倾尖灭和透镜体岩性圈闭。
- The main reservoir of Jurassic Badaowan Formation at Wuxia area is composed of sandbodies of alluvial fan and braided river. 摘要准噶尔盆地乌夏地区侏罗系八道湾组储层发育一套冲积扇、辫状河砂砾岩体。
- Sulige gasfield is formed in a sandy braided river system environment, and its reservoir features in low permeability and significant heterogeneity. 苏里格气田属辫状河沉积,具有特低渗、强非均质性特征,有效砂体呈孤立状分布在致密砂岩中,规模小且连续性、连通性差。
- The braid river sandbody geometry shape could be forcasted by using numeri-cal simulation method. 利用砂体沉积过程数值模拟方法可以预测辫状河砂体的几何形态。
- The Jurassi reservoir in Wu-Xia area is dominated by lithic sandstone and feldspathic litharenite under alluvial fan, fan delta and braided river sedimentary environments. 摘要乌夏地区侏罗系储集层主要是冲积尾、扇三角洲及辫状河沉积环境下形成的岩屑砂岩及长石岩屑砂岩。
- Braided-river deltas that braided river systems prograde into an inland lake are first found in the Palaeogene Shahejie Formation in the Gudong area, Shengli Oil Field. 胜利油田孤东矿区老第三系沙河街组中发现丰富的湖泊辫状河三角洲沉积物,其特征显著,明显有别于其他类型的三角洲,可见到8种特征各异的微相。
- Fluvial fan sedimentary system disposed at the edge of south and north basin;Braided river system disposed in the central basin in late cretaceous in Xinjiang. 晚白垩世信江盆地北缘及南缘边界断层附近发育冲积扇体系，中央洼陷区发育河流沉积体系。
