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- The reservoir type is delta plain facies distributary channel sandbody,and the lithology is mainly composed of fine arcose with a compact cementation. 儲層為三角洲平原分流河道砂體,巖性主要為細粒長(cháng)石砂巖,膠結致密。
- 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。
- Delta plain and front subfacies belong to river-lake transitional facies,there are lots of similar and different facies marker between the two subfacies. 湖成三角洲平原和前緣同屬河湖過(guò)渡相,其對應沉積相標志存在很多相同和不同之處。
- Keywords Ordos basin;river facies;braided river;depositional model;deltaic plain facies;sand body; 鄂爾多斯盆地;河流相;網(wǎng)狀河;沉積模式;三角洲平原相;砂巖體;
- The treatment of ANN lithofacies shows that typical delta facies include distal bar,mouth bar,subaqueous distributary channel,interdistributary estuary in delta front,delta plain branch channel and inter branch channel in ascending order. ANN(神經(jīng)網(wǎng)絡(luò ) )巖相處理結果表明 ,典型的三角洲沉積巖相序列自下而上依次為三角洲前緣遠砂壩、河口砂壩、水下分流河道、分流間灣、三角洲平原分支河道及分支河道間沉積 ,將其結果與錄井巖性序列對比 ,符合率非常高。
- Among them, the under water distributary channel in the frontal edge of the delta possesses the best physical property and then the delta plain, stream, dam sandbody and fluvial facies belt. 其中三角洲前緣水下分流河道及河口壩砂體儲集物性最好，其次為三角洲平原、濱淺湖灘壩砂體及河流相帶。
- Meandering-delta facies can be divided into delta plain subfacies and delta front subfacies,and lacustrine facies can be divided into shore lacustrine subfacies and shallow lacustrine subfacies. 頭臺地區泉四段屬曲流河三角洲和湖泊沉積體系,曲流河三角洲相分為三角洲平原和三角洲前緣2種亞相,湖泊相分為濱湖和淺湖2種亞相。
- Distributary plain facies sands body: 1).Meandering sands micro-facies, which represents large low sinuosity meandering disposition, and the channel sands is very large. 2). 一是分流平原相砂體：1、曲流河砂體微相，代表大型低彎度的曲流河沉積，河道砂體規模很大；
- Lakeshore and fan delta plain of the thirdstage are the main enviroments of coal accumulating. 湖泊緩慢淤淺階段的湖濱和扇三角洲平原是聚煤的主要環(huán)境。
- Lacustrine source rocks provided resource for the oil and gas generation, and flood plain facies and paludal facies mudstone supplied cap rock for the reservoir accumulation. 泛濫平原相、沼澤相泥巖為油氣成藏提供了良好的蓋層條件；
- 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。
- The research area is mainly located in a delta plain environment including distributary braided channels, natural levees, flood basins, flatland morasses and distributary beaches. 在相分析的基礎上，進(jìn)一步研究了區內沉積微相的平面展布特征及其演化規律，認為區內山1期為近海湖泊辮狀河三角洲，到山2期以后演化為內陸湖泊三角洲。
- 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 reservoirs at Baobei block, the Baolang oil field in the Yanqi Basin are composed of braided distributary channel sandbodies in lower delta plain. 焉耆盆地寶浪油田寶北區塊儲層為下三角洲平原辮狀分流河道砂體。
- The lower clastic member under coal C_3 is interperted as deposits of anastomosed river system on the upper delta plain. 研究表明:C_3煤層形成對的下伏碎屑巖段為一發(fā)育在上三角洲平原上的網(wǎng)狀河流體系。
- In Bengal delta plain subsurface aquifers,these microbial reactions may mobilize arsenic from the solid phase into the aqueous phase,resulting in contaminated underground water. 在孟加拉三角洲的地下含水層中,微生物參與了將砷從固相遷移到水相的關(guān)鍵步驟,最終導致了地下水中的砷污染。
- The river discharged into the western part of the deltaic plain. 河水排注到三角洲平原的西部。
- Fuyang reservoir in on hem Songliao basin is a delta plain with well-developed channels of which the banded channel-sand is of strong heterogeneity and anisotropy. 摘要松遼盆地北部扶楊油層屬三角洲平原沉積，河道廣泛發(fā)育，條帶狀發(fā)育的河道砂體具有很強的非均質(zhì)性和各向異性。
- These ongoing depositional changes related to differential subsidence have potentially serious ramifications for this low-lying, densely populated delta plain area. 由于大量全新世沉積堆積在崇明島前緣的沉降中心，重力壓實(shí)作用導致該中心前部出現“泥火山”，周?chē)貙幼冃蚊黠@。
- The depositional areas of lagoonal delta plain peat swamp, terrigenous supratidal peat flat and terrigenous supratidal peat swamp were the best place of the coal-accumulating process. 潟湖三角洲平原和陸源碎屑潮上泥炭坪及泥炭沼澤是最佳的聚煤場(chǎng)所。
