發(fā)布時(shí)間：2018-03-20 07:33

  本文選題：復(fù)合離子聚合物　切入點(diǎn)：陰離子聚合物　出處：《東北石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著我國大多數(shù)油田進(jìn)入高含水期,平面矛盾和層間矛盾開發(fā)過程中的存在的問題日益突出。在長期水驅(qū)的影響下,地層孔隙、孔道、孔喉逐步擴(kuò)大,“短路”現(xiàn)象在油田水驅(qū)中日益嚴(yán)重,常規(guī)調(diào)剖堵水技術(shù)已不能滿足現(xiàn)場需求,注水錐進(jìn)現(xiàn)象導(dǎo)致油區(qū)見水過早,產(chǎn)量遞減,驅(qū)油效率降低。為解決這一問題,國內(nèi)外通過調(diào)剖堵水技術(shù)來提高采收率。為了篩選出適合薩北油田注聚區(qū)塊實(shí)際情況的調(diào)剖劑,本文分析了聚合物調(diào)剖劑類型及陰離子聚合物調(diào)剖劑和復(fù)合離子聚合物調(diào)剖劑的調(diào)剖機(jī)理與特點(diǎn)。確定了聚合物凝膠性能評價(jià)方法,并設(shè)計(jì)評價(jià)陰離子聚合物與復(fù)合離子調(diào)剖劑成膠性能成膠特性影響因素的實(shí)驗(yàn),通過實(shí)驗(yàn)來評價(jià)聚丙烯酰胺濃度、六亞甲基四胺劑量、溶液pH、間苯二酚的加量、地層水礦化度等對凍膠強(qiáng)度的影響。以及實(shí)驗(yàn)分析出聚合物分子量及濃度、JL-1濃度、苯酚濃度、間苯二酚濃度、溶液pH、礦化度、剪切程度等對復(fù)合離子調(diào)剖劑成膠性能的影響。研究結(jié)果表明:陰離子聚合物與復(fù)合離子調(diào)剖劑通過吸附增阻、動(dòng)力捕集、粘彈阻力等實(shí)現(xiàn)聚合物調(diào)剖劑的調(diào)剖;粘度法、變壓力法以及阻力系數(shù)殘余阻力系數(shù)法可以有效測量并計(jì)算凝膠體系的粘度、轉(zhuǎn)變壓力以及阻力系數(shù)從而對凝膠體系進(jìn)行評價(jià);陰離子聚合物調(diào)剖劑的凝膠強(qiáng)度受聚丙烯酰胺濃度影響較大,間苯二酚的、六亞甲基四胺以及PH的增加會(huì)縮短成膠時(shí)間并增加凝膠強(qiáng)度。對于復(fù)合離子調(diào)剖劑,隨著聚合物濃度以及JL-1濃度的增加,凝膠體系的強(qiáng)度呈逐漸增加后趨于平穩(wěn)狀態(tài),當(dāng)苯酚濃度發(fā)生改變時(shí),成膠時(shí)間沒有明顯的變化,凝膠強(qiáng)度也相差不大。間苯二酚濃度的升高使得溶液的成膠時(shí)間明顯縮短,凝膠強(qiáng)度也有顯著的增加。pH值較低時(shí),成膠快速,但粘度保持時(shí)間較短。在pH值較高時(shí),不易成膠。而pH值在5.10~5.15之間時(shí),成膠性能較好。礦化度對其成膠時(shí)間與成膠強(qiáng)度沒有明顯的影響。體系的剪切程度越大,凝膠粘度越低,強(qiáng)度越小。
[Abstract]:As most oil fields in China enter high water-cut period, the problems in the development process of plane and interlayer contradictions become increasingly prominent. Under the influence of long-term water drive, the formation pore, pore channel, The pore throat expands gradually, the phenomenon of "short circuit" becomes more and more serious in oil field water drive, the conventional profile control and water shutoff technology can no longer meet the field demand, the phenomenon of water injection coning leads to premature water discovery, decreasing production rate and decreasing oil displacement efficiency in oil field. In order to solve this problem, In order to screen the profile control agent suitable for the actual condition of polymer injection block in Sabei Oilfield, the oil recovery is improved by profile control and water plugging technology at home and abroad. In this paper, the type of polymer profile control agent and the mechanism and characteristics of anionic polymer profile control agent and compound ion polymer profile control agent are analyzed. The evaluation method of polymer gel properties is determined. An experiment was designed to evaluate the gelling properties of anionic polymer and compound ion profile control agent. The concentration of polyacrylamide, the dose of hexamethylenetetramine, the pH of solution, the amount of resorcinol were evaluated by experiments. The influence of formation water salinity on gel strength, and the experimental analysis of polymer molecular weight and concentration: JL-1 concentration, phenol concentration, resorcinol concentration, solution pH, salinity, The effect of shear degree on the gelling properties of compound ion profile control agent. The results show that the profile control agent of polymer is achieved by adsorption resistance, dynamic trapping, viscoelastic resistance and so on; viscosity method, viscosity method, etc. The variable pressure method and the resistance coefficient residual resistance coefficient method can effectively measure and calculate the viscosity, transition pressure and resistance coefficient of the gel system to evaluate the gel system. The gel strength of anionic polymer profile control agent is greatly affected by the concentration of polyacrylamide. The increase of resorcinol, hexamethylenetetramine and PH will shorten the gelation time and increase the gel strength. With the increase of polymer concentration and JL-1 concentration, the strength of the gel system gradually increased and then tended to steady. When phenol concentration changed, the gelation time did not change obviously. The gelation time of the solution was shortened with the increase of resorcinol concentration. When the gel strength was lower, the gelation rate was faster, but the viscosity was short. When the pH value was higher, the gelation time was shorter. When pH value is between 5.10 and 5.15, the gelation property is better. The salinity has no obvious influence on the gelation time and strength. The higher the shear degree of the system is, the lower the gel viscosity is and the smaller the strength is.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE39
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本文編號：1638089