本文選題：鈣質(zhì)膠結(jié)條帶　切入點(diǎn)：控制因素　出處：《西南石油大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年04期 　論文類型：期刊論文

【摘要】：綜合應(yīng)用鑄體薄片、物性分析等資料,以鄂爾多斯盆地華慶地區(qū)長8油組為例,對密井網(wǎng)條件下低滲致密砂巖內(nèi)部的鈣質(zhì)膠結(jié)條帶進(jìn)行了研究,明確了其基本特征,闡明了不同位置膠結(jié)條帶的發(fā)育控制因素,建立了密井網(wǎng)條件下鈣質(zhì)膠結(jié)條帶的空間展布模式。研究表明,華慶地區(qū)長8油組砂巖中,鈣質(zhì)膠結(jié)條帶廣泛發(fā)育,主要成分為晚期鐵方解石。不同發(fā)育位置的鈣質(zhì)膠結(jié)條帶發(fā)育主控因素不一,整體膠結(jié)式發(fā)育主要受控于粒度,中部式主要受側(cè)向臨近泥頁巖和長石溶蝕影響,頂?shù)资絼t主要受到粒度和泥頁巖發(fā)育程度配置關(guān)系影響。不同沉積微相組合和構(gòu)型界面控制了鈣質(zhì)膠結(jié)條帶的垂向分布,平面上鈣質(zhì)膠結(jié)條帶主要呈團(tuán)塊狀、條帶狀分布于研究區(qū)中部遠(yuǎn)離物源的分流河道末端及其附近河口壩中部�？傮w上,密井網(wǎng)條件下鈣質(zhì)膠結(jié)條帶在空間上呈厚層粗粒砂體內(nèi)部"頂?shù)啄z結(jié)厚延伸遠(yuǎn)—中部膠結(jié)薄延伸近"和薄層砂體"整體膠結(jié)薄延伸近"的展布模式。
[Abstract]:Taking Chang8 oil formation in Huaqing area, Ordos Basin as an example, the calcareous cementation zone inside the low permeability tight sandstone under dense well pattern is studied, and its basic characteristics are clarified by synthetically using the data of thin cast sheet and physical property analysis, and taking Chang8 oil formation in Huaqing area, Ordos Basin as an example. The factors controlling the development of cemented bands in different positions are expounded, and the spatial distribution model of calcareous cementation bands under dense well pattern is established. The results show that the calcareous cementation bands are widely developed in the sandstone of Chang 8 oil formation in Huaqing area. The main component is late iron calcite. The main factors controlling the development of calcareous cementation belt are different, the overall cementation development is mainly controlled by granularity, and the central type is mainly affected by lateral adjacent shale and feldspar dissolution. The vertical distribution of calcareous cementation zone is controlled by different sedimentary microfacies combination and configuration interface, and the calcareous cementation zone is mainly mass like on the plane, and the vertical distribution of the calcareous cementation belt is mainly affected by the granularity and shale development degree of the top-to-bottom type. The strip is distributed at the end of the distributary channel far from the source in the middle of the study area and in the middle of the nearby estuary dam. Under the condition of dense well pattern, the distribution pattern of calcareous cementation strip in space is "the extension of thick cementitious thickness from the top to the bottom" and that of the thin sand body "the whole cementation thin extension is near" in the body of thick layer coarse grain sand.
【作者單位】： 中國石油大學(xué)(北京);中海石油(中國)有限公司天津分公司;中國石油勘探開發(fā)研究院;
【基金】：國家科技重大專項(xiàng)(2011ZX05009-003) 國家自然科學(xué)基金(41372116)
【分類號】：P618.13

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本文編號：1634468