本文選題：直羅油田 + 延長組　； 參考：《西安石油大學》2015年碩士論文

【摘要】：直羅油田黃家?guī)X區(qū)位于陜西省富縣境內(nèi),研究區(qū)面積114km2,構造位置屬于鄂爾多斯盆地陜北斜坡東南部。從該區(qū)試油結果可知長2段試油顯示良好,具有較好的勘探開發(fā)潛力。本文以沉積巖石學、儲層地質(zhì)學、石油地質(zhì)學、地球物理測井等相關理論為指導,以目前先進的實驗測試手段為依托,應用地質(zhì)露頭、鉆井、測井等資料,采取宏觀與微觀相結合的研究方法,對直羅油田黃家?guī)X區(qū)延長組長2段儲層特征進行詳細研究,取得了一定的成果和認識。通過巖心描述及巖石薄片鑒定,認為長2儲層的巖石類型主要為中粒-細粒長石砂巖,碎屑成分主要為石英、長石、巖屑及少量填隙物,填隙物組分主要為綠泥石、伊利石。砂巖的成分成熟度和結構成熟度均較低,分選性中等-好。根據(jù)常規(guī)物性資料分析,認為長2段為低孔低滲儲層,長21平均孔隙度為12.93%,平均滲透率為1.73×10-3μm2;長22段平均孔隙度為13.76%,平均滲透率為2.14×10-3μm2。根據(jù)壓汞毛管壓力測試資料分析,認為長2段儲層以小孔細喉為主。研究區(qū)成巖作用類型主要為機械壓實作用、膠結作用、交代作用、溶蝕作用和破裂作用。根據(jù)I/S中的S%、石英加大級別、顆粒接觸類型、孔隙類型等指標綜合判斷認為,研究區(qū)長2處于中成巖階段B期。根據(jù)儲層分類標準,本文將研究區(qū)長2儲層分為四類:Ⅰ類優(yōu)質(zhì)儲層、Ⅱ類中等儲層、Ⅲ類差儲層、Ⅳ類致密儲層,并從多個角度對長2儲層進行了對比及評價。
[Abstract]:The Huangjialing area of Zhiluo Oilfield is located in the rich county of Shaanxi Province with an area of 114 km ~ 2. The tectonic position belongs to the southeast of the northern Shaanxi slope in the Ordos Basin. The result of oil test in this area shows that Chang2 oil test is good and has good exploration and development potential. Based on the relevant theories of sedimentary petrology, reservoir geology, petroleum geology, geophysical logging and so on, this paper applies geological outcrop, drilling, logging and other data based on the advanced experimental testing methods. The reservoir characteristics of Yanchang formation 2 member in Huangjialing area of Zhiluo Oilfield are studied in detail by combining macroscopic and microscopic research methods, and some achievements and understandings are obtained. Through core description and thin section identification, it is concluded that the rock types of Chang 2 reservoir are mainly medium-grained and fine-grained feldspar sandstone, and the clastic components are mainly quartz, feldspar, lithic debris and a small amount of interstitial matter, and the main fractions are chlorite and Illite. The composition maturity and structure maturity of sandstone are both low and the sorting ability is medium-good. According to the analysis of conventional physical properties, it is considered that Chang 2 is a low porosity and low permeability reservoir, the average porosity of Chang 21 is 12.93, the average permeability is 1.73 脳 10 ~ (-3) 渭 m ~ (2), the average porosity of Chang 22 is 13.76 and the average permeability is 2.14 脳 10 ~ (-3) 渭 m ~ (2). According to the analysis of pressure test data of mercury injection capillary, it is considered that the reservoir of Chang 2 is mainly composed of small pore and fine throat. The diagenesis types are mainly mechanical compaction, cementation, metasomatism, dissolution and rupture. According to the Synthetical judgement of S / S, quartz increasing grade, particle contact type, pore type and so on, the study area 2 is in the B stage of middle diagenesis. According to the criteria of reservoir classification, this paper divides Chang2 reservoir into four categories: class 鈪，

本文編號：2004799