distributary sandstone 中文意思是什麼
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In general, the sandstone body have been deposited by a river, possibly a distributary flowing on a coastal plain.
一般地說，砂巖體似為河流沉積，可能是海岸平原上的分流。 -
From sedimentology symbol such as rock assembled, sediment gradus, sandstone grading analysis, protogene sedimentary structure, ichnofossile and logging facies etc and palaeoenvironment background, it is confirmed that shen84 - an12block s34 segment is braid river delta system, not fan delta system ( abrupt slope ). then it can be more partition as braid river delta plain sedimentary assembled, delta front sedimentary assembled and prodelta sedimentary assembled on core and log assembled. and delta plain sedimentary assembled can be identified four microfacies : braided distributary channel, crevasse splay, overbank deposits and interdistributary bay
沉積微相研究是儲層非均質性研究的基礎，研究區有豐富的巖芯資料和測井資料，通過巖石組合、沉積韻律，砂巖粒度分析、沉積構造、古生物遺跡和測井相等沉積學標志，結合古環境背景，確定沈84 ?安12塊s _ 3 ~ 4段為辮狀河三角洲體系，而不是前人所認為的扇三角洲（陡坡型）體系，在巖芯和測井組合上可進一步劃分為辮狀河三角洲平原沉積組合、三角洲前緣沉積組合和前三角洲沉積組合，其中三角洲平原沉積組合又可識別出辮狀分流河道、決口扇、分流河道邊部和分流間灣四種微相類型；三角洲前緣沉積組合識別出水下分流河道、水下分流河道邊部和分流河口壩三種微相。 -
The yanchang formation is divided, for the first time, into six third - order sequences, each with an average time duration of about 4. 5 ma. the single sequence is composed of deltaic and lacustrine sandstones, siltstones and mudstones. the subaerial and subaqueous distributary channel and channel - mouth bar sandstone reservoirs are well developed mainly in the lowstand and highland systems tracts
論文在富縣探區首次應用陸相層序地層學的觀點和方法，把延長組劃分為6個三級層序，平均時限4 . 5ma ，各層序由三角洲與湖泊相砂、泥巖沉積組成，主要在低位體系域和高位體系域發育水下（上）分流河道和河口砂壩砂巖儲層 -
Research section braided distributary channel sandstone is mostly positive rhythm, and high porosity and seepage rate in its central - top section, low seepage rate kalk interbed in its bottom. underwater distributary channel sandstone is relatively homogeneous positive rhythm, high porosity and seepage rate in its bottom, its top low. distributary mouth bar sandstone is complex rhythm, many interbeds inside
研究區宏觀非均質性特點為：研究區辮狀分流河道砂體以正韻律為主，高孔、滲帶在砂體中上部，底部常存在低滲透率鈣質夾層；水下分流河道砂體為較均質的正韻律，下部孔滲高，上部孔滲變小，分流河口壩砂體為復合韻律，砂體內部夾層多。 -
Delta front sedimentary assembled can be identified three microfacies : underwater distributary channel, underwater overbank deposits and distributary mouth bar. reservoir heterogeneity can divide macro heterogeneity and micro heterogeneity according to reservoir scale. macro heterogeneity research based on sedimentology and studied on sandstone longitudinal and landscape orientation distributing mode, it ' s inner structure character
儲層非均質性根據儲層描述尺度大小，可區分為宏觀非均質性和微觀非均質性，宏觀非均質性研究是以沉積學為基礎，研究砂體縱橫向分佈模式，砂體內部的結構特徵。
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