發(fā)布時間：2018-05-13 03:33

  本文選題：聚集模式 + 致密油��； 參考：《沉積學(xué)報》2017年03期

【摘要】：通過鉆井、測井、巖芯及實驗數(shù)據(jù)綜合分析,對松遼盆地北部青山口組致密油特征與聚集模式進行了深入研究。結(jié)果表明,松遼盆地北部青山口組致密油分布在三角洲前緣及湖相區(qū),儲集層屬于片狀濁流形成的致密儲層,孔隙度一般小于10%,局部可達到15%,滲透率普遍小于0.1×10~(-3)μm~2。儲集空間為粒間孔、粒內(nèi)溶孔、鑄模孔、微裂縫等,孔隙直徑分布在5~200μm,孔喉半徑小于0.5μm。烴源巖是青山口組一段和二段湖相泥巖,具有廣覆式分布特點,干酪根為Ⅰ型或Ⅱ1型,平均有機碳含量(TOC)為1%~3%,熱成熟度(Ro)為0.9%~1.1%,屬優(yōu)質(zhì)成熟烴源巖。聚集模式為儲層平面上大面積連續(xù)分布,無明顯邊界,縱向上儲層與源巖交互疊置形成千層餅狀,具有緊密接觸的源儲共生型成藏組合。因此,致密油聚集宏觀上受成熟烴源巖控制,其次取決于致密儲層分布。致密油儲層普遍超壓,含油級別為油斑和油跡,不存在油浸和富含油,原油屬于低黏度輕質(zhì)原油,單井無自然產(chǎn)能,采取水平鉆井并進行大規(guī)模分段體積壓裂才能獲得工業(yè)產(chǎn)能。對其沉積及聚集模式的認(rèn)識為松遼盆地北部致密油勘探拓展了新的空間,具有實際指導(dǎo)意義。
[Abstract]:Through comprehensive analysis of drilling, logging, core and experimental data, the characteristics and accumulation model of dense oil in Qingshankou formation in northern Songliao Basin were studied. The results show that the dense oil of Qingshankou formation in the northern Songliao Basin is distributed in the delta front and lacustrine facies, and the reservoir is a compact reservoir formed by sheet turbidite flow. The porosity is generally less than 10, the local porosity is less than 15 and the permeability is generally less than 0.1 脳 10 ~ (-3) 渭 m ~ (-2). The reservoir space is composed of intergranular pore, intragranular solution pore, mold hole, microfracture, etc. The pore diameter is distributed in 5 ~ 200 渭 m, and the pore throat radius is less than 0.5 渭 m. The source rocks are lacustrine mudstones of the first and second member of the Qingshankou formation, with wide distribution characteristics. Kerogen is of type I or 鈪，

本文編號：1881492