發(fā)布時(shí)間：2018-03-20 15:13

  本文選題：鄂爾多斯盆地　切入點(diǎn)：沿河灣區(qū)　出處：《西安石油大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：沿河灣油區(qū)位于鄂爾多斯盆地伊陜斜坡中部,屬于延長(zhǎng)油田上產(chǎn)區(qū)塊。研究區(qū)油藏儲(chǔ)層主要為三疊系延長(zhǎng)組長(zhǎng)2和長(zhǎng)6油層組。在巖石薄片、鑄體薄片、掃描電鏡和壓汞資料分析的基礎(chǔ)上,確立了該區(qū)長(zhǎng)2和長(zhǎng)6儲(chǔ)層主要以細(xì)粒巖屑長(zhǎng)石砂巖為主,物性較好,儲(chǔ)層的孔隙類(lèi)型主要為殘余粒間孔、濁沸石溶蝕粒間孔和長(zhǎng)石粒內(nèi)溶孔。研究區(qū)長(zhǎng)2油層組儲(chǔ)層以Ⅰ類(lèi)為主,儲(chǔ)層儲(chǔ)集性能較好；長(zhǎng)6油層組儲(chǔ)層則主要以Ⅳ類(lèi)為主,巖性比較致密,儲(chǔ)集性能較差。長(zhǎng)2和長(zhǎng)6儲(chǔ)層分別為三角洲平原分流河道、三角洲前緣水下分流河道沉積,油氣均主要分布于分流河道和河口壩沉積砂體中,平面上呈北東—南西向條帶狀分布。該區(qū)油氣成藏主要控制因素有巖性、構(gòu)造和遮擋三大因素,其中長(zhǎng)2油藏為遠(yuǎn)源聚集型成藏模式,而長(zhǎng)6油藏為近源聚集型成藏模式。本文通過(guò)深入研究其儲(chǔ)層特征及油氣控制因素,為該區(qū)今后的勘探開(kāi)發(fā)指明了一定方向。
[Abstract]:The Yanhewan oil area is located in the middle of the Yishan slope in Ordos Basin, which belongs to the upper producing area of Yanchang Oilfield. The reservoir reservoirs in the studied area are mainly the formation of Chang 2 and Chang 6 of the Triassic Yanchang formation. Based on the analysis of scanning electron microscope and mercury injection data, it is established that the reservoirs of Chang 2 and Chang 6 in this area are mainly fine lithic feldspathic sandstone with good physical properties, and the pore types of reservoirs are mainly residual intergranular pores. In the study area, the reservoir of Chang 2 reservoir is mainly type I, and the reservoir performance is good, while the reservoir of Chang 6 reservoir group is mainly type 鈪，

本文編號(hào)：1639635