本文選題：曙一區(qū) + 蒸汽吞吐��； 參考：《浙江大學(xué)》2015年碩士論文

【摘要】：遼河油田曙一區(qū)位于遼河盆地西部凹陷西斜坡中段,開發(fā)目的層為新生界下第三系沙河街組興隆臺油層,共分四個油層組,為超稠油油藏,采用蒸汽吞吐開發(fā)方式開采。后期面對蒸汽吞吐開發(fā)方式的吞吐輪次高、周期產(chǎn)量下降、單井操作成本高等問題,為提高油藏采收率,杜84塊興Ⅰ組油藏實施方式轉(zhuǎn)換,采用SAGD(蒸汽輔助重力泄油的英文首字母縮寫)開發(fā)方式開發(fā),共規(guī)劃31個雙水平SAGD井組,先期轉(zhuǎn)入4個先導(dǎo)試驗井組,但受隔夾層發(fā)育的影響,生產(chǎn)效果差,一直未達到方案設(shè)計指標(biāo)。為解決關(guān)鍵問題-隔夾層發(fā)育對開發(fā)效果的問題,作者運用了層序地層學(xué)等先進理論和儲層精細描述和油藏數(shù)值模擬的一些新技術(shù),其中包括：地層精細對比技術(shù)、微構(gòu)造研究技術(shù)、測井二次解釋技術(shù)、三維建模技術(shù)、數(shù)值模擬技術(shù)及剩余油分布綜合研究技術(shù)。首先運用層序地層學(xué)理論,通過對比剖面完成地層對比；根據(jù)韻律性特征及巖性、電性將興Ⅰ組地層劃分成興Ⅰ1、興Ⅰ2、興Ⅰ3、興Ⅰ4、共4個小層,完成單層級別的砂體對比研究；基于地層對比結(jié)果,確定研究區(qū)區(qū)域構(gòu)造特征；在分析關(guān)鍵性四性關(guān)系的基礎(chǔ)上,完成研究區(qū)300余口井的測井二次解釋工作,建立了泥質(zhì)含量、孔隙度、滲透率、飽和度模型；對有效厚度進行單砂體級別的二次解釋；在儲層精細描述的基礎(chǔ)上,結(jié)合生產(chǎn)動態(tài)資料,確定了油藏參數(shù)；在構(gòu)造、巖性和儲層砂體精細表征的基礎(chǔ)上,應(yīng)用條件模擬的方法,建立了杜84塊興Ⅰ組含礫砂巖段儲層精細的三維地質(zhì)模型；最后對比泥質(zhì)夾層模型與無夾層模型的開發(fā)效果,泥質(zhì)夾層的存在對蒸汽腔的發(fā)育有明顯影響,進而影響開發(fā)效果。曙一區(qū)興Ⅰ組油藏是西部凹陷油氣生產(chǎn)的重要目標(biāo)區(qū),隨著SAGD開發(fā)的深入,石油工作者認識到,隔夾層發(fā)育對SAGD開發(fā)效果具有重要影響。因此,本文在落實隔夾層發(fā)育的基礎(chǔ)上,認識隔夾層對SAGD開發(fā)效果的影響,并提出改造措施,達到改善已轉(zhuǎn)井組生產(chǎn)效果及保持待轉(zhuǎn)井組順利轉(zhuǎn)入的目的,為油田穩(wěn)定提供有利保障。綜上所述,為了解決本區(qū)隔夾層影響生產(chǎn)效果的問題,作者把傳統(tǒng)的地質(zhì)方法和先進的數(shù)值模擬方法相結(jié)合,預(yù)測了井間隔夾層的展布,找到影響開發(fā)效果的原因,圓滿地解決了問題。
[Abstract]:Shu1 area of Liaohe oilfield is located in the middle section of west slope of western depression of Liaohe basin. The development target layer is Xinglongtai reservoir of Shahejie formation of Neozoic Lower Tertiary system, which is divided into four reservoirs, which are super heavy oil reservoirs and are exploited by steam huff and puff development. In the later stage, the development mode of steam huff and puff is high, the cycle production is decreased, the operating cost of single well is high. In order to improve the oil recovery, the reservoir mode of XingI formation in block du 84 is changed. The development method of sag (Steam assisted Gravity drain) is used to develop 31 double-level SAGD well groups, which are transferred to 4 pilot test wells in advance. However, due to the development of intercalation, the production effect is poor. The project design target has not been met. In order to solve the key problem of the development of intercalation, the author applies advanced theories such as sequence stratigraphy and some new techniques of fine reservoir description and reservoir numerical simulation, including fine stratigraphic correlation. Microstructural research technology, logging secondary interpretation technology, three-dimensional modeling technology, numerical simulation technology and remaining oil distribution comprehensive research technology. Firstly, stratigraphic correlation is accomplished by correlation section by using sequence stratigraphy theory, and according to rhythmic characteristics and lithology, the formation of Xing I is divided into four sublayers, Xing鈪，

本文編號：1916581