發(fā)布時間：2018-11-25 12:09

【摘要】：為了探究含煤巖系聚煤前后沉積相及其演化特征,運用地震沉積學(xué)解釋技術(shù),通過基于最小等時單元地層切片的地震屬性優(yōu)選法及單井層序地層的巖性與微相劃分標(biāo)定法,建立了敏感屬性與巖性、沉積相的對應(yīng)關(guān)系,對沁水盆地中裕地區(qū)山西組2號煤層聚煤前后沉積相及其演化進行了研究。研究結(jié)果表明:中期旋回作為該區(qū)的最小等時研究單元,以短期旋回作為控制進行切片可以研究四-五級序界面內(nèi)的沉積現(xiàn)象;均方根振幅屬性可以作為沉積相平面展布特征預(yù)測的敏感屬性;山西組2號煤層聚煤前為下三角洲沉積環(huán)境,聚煤后為上三角洲沉積環(huán)境,并識別出了分流河道、天然堤、泛濫盆地和泥炭沼澤等沉積微相及其空間分布。
[Abstract]:In order to investigate the sedimentary facies and their evolution characteristics before and after coal accumulation in coal-bearing rock series, seismic sedimentological interpretation technique is used to optimize seismic attributes based on minimum isochronous unit stratigraphic slices and to calibrate lithology and microfacies of single-well sequence stratigraphy. The relationship between sensitive attributes, lithology and sedimentary facies is established, and the sedimentary facies and their evolution before and after coal accumulation in Shanxi formation No. 2 in Zhongyu formation of Qinshui Basin are studied. The results show that the intermediate cycle is the minimum isochronous study unit in this area, and the deposition phenomenon in the four to five order interface can be studied by using the short cycle as the control slice. The RMS amplitude attribute can be used as a sensitive attribute to predict the distribution characteristics of sedimentary facies. The sedimentary microfacies and their spatial distribution of distributary channel, natural embankment, flood basin and peat swamp were identified in Shanxi formation No. 2 coal seam before coal accumulation and after coal accumulation as upper delta sedimentary environment.
【作者單位】： 太原理工大學(xué)礦業(yè)工程學(xué)院;煤與煤系氣地質(zhì)山西省重點實驗室;山西山地物探技術(shù)有限公司;
【基金】：山西省煤基重點科技攻關(guān)資助項目(MQ2014-01)
【分類號】：P618.11;P631.4

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 楊德壽;王青平;童�？�;;青海聚乎更礦區(qū)侏羅紀(jì)含煤巖系沉積相研究[J];中國煤炭地質(zhì);2011年12期

，

本文編號：2356056