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- They are widely developed in delta front, and they usually overlap vertically and occur in belts regionally. 它们在三角洲前方广泛发育,垂向上相互叠置、平面上成带出现。
- Seismicity can damage the stability of delta front and form liquefied fluxoturbidite and faulted fluxoturbidite. 其中地震作用可以破坏三角洲前缘的稳定性,形成液化滑塌浊积体和断阶滑塌浊积体。
- It has a two-layer structure, i. e. braid-river delta plain subfacies and braid-river delta front subfacies. 它明显分为两层,即辫状河三角洲平原亚相和辫状河三角洲前缘亚相。
- Underwater distributary channel of the delta front and turbidite fan are the profitable facies of Dongpu depression. 有利相带主要为三角洲前缘水下分流河道和浊积扇。
- During the abandonment period of delta, sediments of delta front were usually rebuilt by tidal action. 在三角洲废弃期,三角洲前缘沉积物常被潮汐作用改造。
- In contrast , the regular and good reserved delta front is disadvantaged to form fluxoturbidite. 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。
- The sedimentary facies is the underwater distributary channel of delta front with good accumulation ability. 针对该地区探井少、地震资料品质较差等特点,开展了储层综合预测技术应用研究。
- The reservoirs in the study area are mainly delta plain distributary channel sand body and delta front underwater distributary channel sand body. 研究区储层主要为三角洲平原分流河道及三角洲前缘水下分流河道砂体;
- The braided nyc delta front subfacies located on the south slop area is developed in the braided rive delta which progrades from south to north. 利用沉积体制方法研究丁沾化凹陷孤南洼陷沙三段中亚段中部沉积体系平面分布规律。
- The overbank and fluvial channel sub-facies in the fluvial facies were developed.Only delta front sub-facies was developed in the delta facies. 其中,河流相中发育堤泛亚相和河道亚相,在三角洲相中仅发育三角洲前缘亚相,湖泊相中以浅湖亚相为特征。
- Major controlling factors of the lithologic oil reservoirs include the properties and distribution of delta front sandbodies and fluxoturbidite sandbo. 三角洲前缘砂体、滑塌浊积岩砂体的性质和分布,砂体分布范围内有利的构造位置和有利的沉积储集相带成为控制岩性油藏形成的主要因素。
- The Dujiatai oil layers in the Shu 266 fault block are fan delta front facies, locating on the edge of the fan delta front in the areal. 曙266断块杜家台油层为扇三角洲前缘亚相沉积,平面上位于扇三角洲前缘的端部,主要微相为水下分流河道与水下分流间湾。
- The sand bodies located in distributary channel of lake facies delta plain and river mouth of delta front are favorable reservoir beds. 湖相三角洲平原分流河道和三角洲前缘河口坝砂体为有利储层。
- In literally, there shows the evolution trend from northeast and southwest distributaries channel sand to delta front far bar sand. 平面上,从北东向南或南西方向显示出从分流河道砂体向三角洲前缘远端坝砂体过渡的变化趋势。
- The delta front mainly developed in Chang 6, which includes microfacies, such as distributary channel sandbodies, river mouth bars, distal bars and so on. 长6期是三角洲建设的高峰期,发育三角洲水下分流河道与河口砂坝砂体及远砂坝微相。
- The sediments of delta front around wave base plane are eroded by wave action and took along to redeposit below wave base plane, during which turbidite is formed. 波浪作用可以侵蚀浪基面附近的三角洲前缘砂体,并在回流作用下携带至最大浪基面之下再沉积,沉积过程中形成小型浊积体。
- The distribution of Chang 6 oil bearing formation is controlled by underwater distributary channel of the delta front, where is the main enrichment area of the hydrocarbon. 分析认为长6油藏油气分布主要受三角洲前缘水下分流河道的分布控制,水下分流河道发育区一般为油气的主要富集区;
- The subaqueous distributary channel clastic rock bodies in the fan delta front formed the main part of the fan delta and the most important oil and gas reservoirs. 扇三角洲前缘水下分流河道形成的碎屑岩体是扇三角洲沉积的主体部分,成为主要的油气储集体。
- Because fan delta front subdistributary channel or distributary channel is the major depositional microfacies of Sha1, the reservoir mainly is coarse grade and single thick sand. 沙一段以扇三角洲前缘水下分流河道或分流河道相储层为主,粒度粗,单一砂层厚度大;
- The scale of the highstand delta front is smaller than the lowstand delta front, but the incise valley and the river deposition developed in the time of the lowstand. 研究发现:在断裂陡坡带以下高位扇三角洲前缘没有低位扇三角洲前缘发育的规模大,且低位时期下切谷和河流沉积较发育;