本文選題：三元復(fù)合驅(qū) + 集輸系統(tǒng)�。� 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：隨著杏北油田進入特高含水期,三次采油工藝的不斷擴大,三元復(fù)合驅(qū)集輸系統(tǒng)見劑濃度的不斷升高,在實際生產(chǎn)運行過程中主要存在以下三方面的問題:一是集輸工藝淤積結(jié)垢問題比較突出;二是部分環(huán)節(jié)不能清垢問題;三是部分工藝清垢工作程序復(fù)雜。目前在防垢方面所用的技術(shù)有電子防垢儀、超聲波防垢儀以及化學(xué)藥劑防垢技術(shù)等,但這些防垢技術(shù)的在實際應(yīng)用中效果不是特別的明顯。轉(zhuǎn)油站內(nèi)、計量間內(nèi)部U型匯管尚沒有形成適合空穴射流操作的工藝技術(shù)。針對原工藝流程不能很好的滿足生產(chǎn)實際需求,從三元集輸系統(tǒng)容易形成垢淤的關(guān)鍵節(jié)點入手,形成了一套適應(yīng)于三元復(fù)合驅(qū)的清垢工作快捷、運行效率高的工藝技術(shù)。主要研究內(nèi)容:(1)優(yōu)化了機械式自動除垢加熱爐運行模式及合理的刮垢周期,刮垢周期為3次/天,能夠保證其在高效狀態(tài)下運行,避免了鋼刷頻繁刮垢造成的磨損及對油水界面的擾動問題。(2)完善了機械式自動除垢加熱爐配套工藝,通過對分體爐的最上層換熱體增設(shè)60目過濾網(wǎng),實現(xiàn)對刮垢鋼刷刮掉的垢質(zhì)進行截留,懸浮物去除率達到51.6%,有效防止刮掉的垢質(zhì)進入下游摻水管道。(3)明確了在線大排量沖洗參數(shù),通過現(xiàn)場試驗摸索出單井管道長度600米,用71℃熱水,壓力2.85MPa沖洗1.5h;管道長度≥600米,用71℃熱水,壓力2.85MPa沖洗2.0h,能夠滿足三元開發(fā)前期淤積物以蠟為主的管道沖洗要求。(4)形成了集輸管道清淤除垢措施模版,根據(jù)井口不同回壓等級及含劑濃度,通過調(diào)大摻水量、在線高壓沖洗、集輸管道空穴射流等措施保證集輸管道通暢。
[Abstract]:With the Xingbei Oilfield entering the extremely high water cut period and the continuous expansion of the tertiary oil recovery process, the concentration of the agent in the ASP flooding gathering and transportation system is increasing. There are three main problems in the actual production and operation: first, the deposition and scaling problem of gathering and transportation process is more prominent; second, some links can not clear the scale; third, the working procedure of partial process cleaning is complex. At present, the technologies used in scale control include electronic scale inhibitor, ultrasonic scale inhibitor and chemical agent scale control, etc. However, the effect of these anti-scaling techniques in practical application is not very obvious. In the transfer station, the U-shaped manifold in the metering room has not yet formed the technology suitable for cavitation jet operation. In view of the fact that the original technological process can not meet the actual demand of production well, starting from the key node of ternary gathering and transportation system which is easy to form scale and silt, a set of rapid scale removal and high operation efficiency technology suitable for ASP flooding has been formed. The main research contents are as follows: (1) the operation mode and reasonable scaling cycle of the mechanical automatic scale removal heating furnace are optimized. The scaling cycle is 3 times per day, which can ensure its operation under high efficiency. The wear caused by frequent scaling of steel brushes and disturbance of oil-water interface are avoided. The matching process of mechanical automatic scale removal furnace is improved. By adding 60 mesh filter net to the upper heat exchanger of split furnace, The removal rate of suspended solids reaches 51.6 and effectively prevents the scraped material from entering the downstream water mixing pipeline. (3) the on-line large discharge flushing parameters are defined, and the length of single well pipe is found out through field tests, and the length of single well pipe is 600 meters. With hot water at 71 鈩，

本文編號：1909190