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- Five microfacies sandbodies including distributary channel, mouth bar, front sheet sand, gravity flow sand and overbank sand are developed in the fan delta front. 在扇三角洲前緣主要發(fā)育水下分流河道、河口壩、前緣席狀砂體、重力流砂體、水下溢岸砂體5種微相砂體。
- The fan delta front sheet sand and the slump turbidite system that arecontrolled by the cascade fault landform of the actic region is the advantageous areaof seeking a section of lithologic trap of the Dongyi interval. 陡坡帶斷階地貌控制下的扇三角洲前緣砂體及滑塌濁積體是尋找東一段巖性圈閉的有利地區;
- Non-flattening Delta Front Sheet Sand--Evidence from Outcrops and Subsurface 不平坦的三角洲前緣席狀砂--來(lái)自露頭和地下的證據
- Five types of sedimentary microfacies , such as underwater distributary channel mouth bars, front sheet and far sand bars, and front fan delta muds, are differentiated. 研究區可作為儲層的砂體主要為水下分流河道砂體、河口壩砂體、前緣席狀砂砂體及遠砂壩砂體。不同類(lèi)型的砂體由于其形成環(huán)境不同,其物性和分布有較大差異。
- The reservoirs in the study area are mainly delta plain distributary channel sand body and delta front underwater distributary channel sand body. 研究區儲層主要為三角洲平原分流河道及三角洲前緣水下分流河道砂體；
- 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緣河口壩砂體為有利儲層。
- In literally, there shows the evolution trend from northeast and southwest distributaries channel sand to delta front far bar sand. 平面上，從北東向南或南西方向顯示出從分流河道砂體向三角洲前緣遠端壩砂體過(guò)渡的變化趨勢。
- 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緣水下分流河道或分流河道相儲層為主，粒度粗，單一砂層厚度大；
- Major reservoir is sand bodies of subaquatic distributary channels in delta fronts. 沉積相是最主要的因素，三角洲前緣水下分流河道砂體是主要的儲集體。
- So that the main force (micro) facies is shallow lascustrine sand bar, sheet sand, deep-lake fans, braided channel and slump turbidite fans. 淺湖砂壩、席狀砂、深湖濁積扇、深湖+濁積砂、辮狀河水道和滑塌濁積扇是達爾其油田主力產(chǎn)油沉積（微）相。
- Subaqueous distributary channel is the most favorable facies belt, followed by frontal sheet sand, subaqueous main channel, mouth bar and distal bar. 提出水下分流河道砂體是最有利儲層發(fā)育的微相類(lèi)型，其次為前緣席狀砂、水下主河道、河口壩和遠砂壩微相。
- They are widely developed in delta front, and they usually overlap vertically and occur in belts regionally. 它們在三角洲前方廣泛發(fā)育，垂向上相互疊置、平面上成帶出現。
- Seismicity can damage the stability of delta front and form liquefied fluxoturbidite and faulted fluxoturbidite. 其中地震作用可以破壞三角洲前緣的穩定性，形成液化滑塌濁積體和斷階滑塌濁積體。
- Depositional features of two kinds of reservoir sandbody (loch sand bar, sheet sand) in upper Es 4 of Boxing subsag are described from the analysis of single well facies profile. 從單井相剖面分析出發(fā),對博興洼陷沙四段上亞段濱淺湖砂壩、席狀砂兩種儲集砂體的沉積特征進(jìn)行描述。
- It has a two-layer structure, i. e. braid-river delta plain subfacies and braid-river delta front subfacies. 它明顯分為兩層，即辮狀河三角洲平原亞相和辮狀河三角洲前緣亞相。
- Underwater distributary channel of the delta front and turbidite fan are the profitable facies of Dongpu depression. 有利相帶主要為三角洲前緣水下分流河道和濁積扇。
- During the abandonment period of delta, sediments of delta front were usually rebuilt by tidal action. 在三角洲廢棄期，三角洲前緣沉積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,形態(tài)規則、保存完好的三角洲前緣反而不利于滑塌濁積巖的形成。
- In loess hilly-gully region covered by sheet sand,soil water erosion process is different from typical loess hilly-gully region because of worse natural environment and loose land surface material. 在片沙覆蓋的黃土丘陵區，由于惡劣的自然環(huán)境及松散的地表組成物質(zhì)，土壤的水蝕過(guò)程明顯地不同于典型的黃土丘陵區。
