【摘要】：為了定量獲取注采井間連通及擴(kuò)容信息,以風(fēng)城油田SAGD擠液預(yù)處理啟動(dòng)為例,采用有限元軟件ABAQUS計(jì)算擴(kuò)容過程中儲(chǔ)層變形及滲流特性,通過監(jiān)測(cè)壓力,結(jié)合德雷克-普拉格力學(xué)本構(gòu)模型,按照比值定義法、權(quán)重思想和乘法原則建立了擴(kuò)容過程中的水力連通模型,依靠數(shù)據(jù)分析中回歸方法得出了擴(kuò)容半徑的計(jì)算公式。結(jié)果表明,風(fēng)城SAGD超稠油儲(chǔ)層的水力連通系數(shù)為0.6~0.8,系數(shù)越大,擴(kuò)容區(qū)域越大,后期預(yù)熱蒸汽用量越少。模型預(yù)測(cè)與實(shí)際監(jiān)測(cè)數(shù)據(jù)吻合效果好,相對(duì)誤差小于5%,說明建立的水力連通模型是有效的。
[Abstract]:In order to quantitatively obtain the information of connectivity and capacity expansion between injection and production wells, taking the start-up of SAGD extrusion pretreatment in Fengcheng Oilfield as an example, the finite element software ABAQUS is used to calculate the reservoir deformation and seepage characteristics in the process of capacity expansion, and the pressure is monitored. According to the ratio definition method, the weight idea and the multiplication principle, the hydraulic connectivity model in the process of capacity expansion is established according to the Drake-Prager mechanical constitutive model, and the formula for calculating the expansion radius is obtained by using the regression method in the data analysis. The results show that the hydraulic connectivity coefficient of Fengcheng SAGD super heavy oil reservoir is 0.6 鈮，

本文編號(hào)：2480493