【摘要】：以147口探井、300口開(kāi)發(fā)井資料為基礎(chǔ),并重點(diǎn)結(jié)合25口取心井的巖石學(xué)特征及地震反演分析,對(duì)松遼盆地四方坨子地區(qū)泉頭組四段—嫩江組三段開(kāi)展層序地層劃分及沉積演化規(guī)律研究。結(jié)果表明,泉四段—嫩江組地層可劃分為3個(gè)Ⅱ級(jí)層序、7個(gè)Ⅲ級(jí)層序和21個(gè)Ⅳ級(jí)層序。在層序演化背景下,泉四段沉積期發(fā)育曲流河三角洲—濱淺湖沉積環(huán)境,青山口—嫩江組沉積期發(fā)育辮狀河三角洲—濱淺湖—半深湖—深湖沉積環(huán)境。這一過(guò)程中,受沉積基準(zhǔn)面升降、燕山期全盆左旋走滑和海侵作用的共同影響,沉積物源發(fā)生白城水系—英臺(tái)水系—訥河水系的變化,沉積中心由齊家古龍凹陷向三肇凹陷遷移,突出表現(xiàn)為三角洲朵體軸向發(fā)生SW-NW-NE的順時(shí)針旋轉(zhuǎn),以及青一段和嫩二段兩期最大湖泛面的發(fā)育�；谏鲜龀练e認(rèn)識(shí),提出了低幅構(gòu)造脊聚集油氣與湖泛期沉積尋找頁(yè)巖油氣資源的新思路。
[Abstract]:Based on the data of 147 exploration wells and 300 development wells, combined with the petrological characteristics of 25 coring wells and seismic inversion analysis, The sequence stratigraphic division and sedimentary evolution of the third member of Quantou formation and Nenjiang formation in Situozi area of Songliao Basin are studied. The results show that the strata of the Quansi-Nenjiang formation can be divided into three second-order sequences, seven third-order sequences and 21 鈪，

本文編號(hào)：2279727