本文選題：碳酸鈣垢 + 阻垢率　； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：大慶頭臺(tái)部分油田的油、水井管道已經(jīng)產(chǎn)生了嚴(yán)重的腐蝕結(jié)垢問(wèn)題,這無(wú)形中的增重檢泵任務(wù),同時(shí)增高了注水入壓力,嚴(yán)重時(shí)甚至?xí)璧K了油、水井的正常運(yùn)行,造成一定的經(jīng)濟(jì)損失。為解決頭臺(tái)油田的結(jié)垢問(wèn)題,應(yīng)采取有力的阻垢措施,有效的防止金屬設(shè)備、管道和注水設(shè)施結(jié)垢。所以研究頭臺(tái)油田油井結(jié)垢規(guī)律和有效的防垢措施發(fā)迫在眉睫。本文調(diào)研了頭臺(tái)油田茂區(qū)的結(jié)垢現(xiàn)狀,采集具有代表性的出水水樣及結(jié)垢樣品進(jìn)行詳細(xì)分析。運(yùn)用儀器分析手段如X射線衍射(XRD)和電子掃描電鏡(SEM)研究結(jié)垢樣品構(gòu)成元素及晶體類(lèi)型。結(jié)合現(xiàn)有理論知識(shí)總結(jié)油井結(jié)垢規(guī)律是油井容易產(chǎn)生大量的碳酸鈣垢和鐵化合物垢,導(dǎo)致油井結(jié)垢的主要成因是水中含有大量的結(jié)垢離子如鈣鎂離子、碳酸根離子、碳酸氫根離子、腐蝕細(xì)菌等。本文實(shí)驗(yàn)主要研究七種常用油田阻垢劑的阻垢性能,總結(jié)實(shí)驗(yàn)結(jié)果優(yōu)選出兩種高效同時(shí)阻垢效果穩(wěn)定的阻垢劑HEDP與HEDPNa2進(jìn)行復(fù)配實(shí)驗(yàn),研究發(fā)現(xiàn)HEDP與HEDPNa2在使用濃度比為3:2時(shí),其阻垢率最高且阻垢效果穩(wěn)定。本文實(shí)驗(yàn)研究了復(fù)配阻垢劑阻碳酸鈣垢性能,實(shí)驗(yàn)結(jié)果表明該復(fù)配阻垢劑阻碳酸鈣垢性能穩(wěn)定,而且具有良好的協(xié)同性能。復(fù)配阻垢劑的阻垢率遠(yuǎn)高于使用單劑。另外本文還研究了復(fù)配阻垢劑的阻垢性能,總結(jié)復(fù)配阻垢劑與使用濃度、反應(yīng)溫度、反應(yīng)時(shí)間、堿度、鈣離子濃度的變化規(guī)律。最終實(shí)驗(yàn)結(jié)果表明復(fù)配阻垢劑在低使用濃度下阻碳酸鈣垢性能較好。同時(shí)復(fù)配阻垢劑的抗鈣離子能力、耐堿度、耐高溫、有效時(shí)長(zhǎng)都有所增強(qiáng)。
[Abstract]:The oil and well pipes in part of Daqing's Toutai oil field have already caused serious corrosion and scaling problems. This invisible task of increasing the weight of the pump and increasing the injection pressure will even hinder the normal operation of the oil and wells. Causing certain economic losses. In order to solve the scaling problem in Toutai Oilfield, effective scale inhibition measures should be taken to effectively prevent the scaling of metal equipment, pipelines and water injection facilities. Therefore, it is urgent to study the scaling law and effective scale prevention measures in Toutai Oilfield. In this paper, the present situation of scaling in Mao area of Toutai Oilfield is investigated, and representative effluent water and scaling samples are collected and analyzed in detail. The constituent elements and crystal types of scaling samples were studied by means of instrumental analysis such as X-ray diffraction (XRD) and electron scanning electron microscopy (SEM). Combining with the existing theoretical knowledge, it is concluded that the oil well scale is easy to produce a large amount of calcium carbonate scale and iron compound scale, and the main cause of the oil well scaling is the existence of a large number of scaling ions such as calcium and magnesium ions and carbonate ions in the water. Bicarbonate ions, corrosion bacteria, etc. In this paper, the scale inhibition performance of seven kinds of commonly used oil field scale inhibitors is studied, and two kinds of scale inhibitor HEDP and HEDPNa2, which have stable scale inhibition effect and high efficiency, are selected from the experimental results. It is found that the ratio of HEDP to HEDPNa2 is 3:2, and the experimental results show that the ratio of HEDP to HEDPNa2 is 3:2. The scale inhibition rate is the highest and the scale inhibition effect is stable. In this paper, the scale inhibition performance of the compound scale inhibitor calcium carbonate is studied experimentally. The experimental results show that the scale inhibition agent is stable and has good synergistic performance. The scale inhibition rate of compound scale inhibitor is much higher than that of single agent. In addition, the scale inhibition performance of the compound scale inhibitor was studied, and the variation law of the compound scale inhibitor and its concentration, reaction temperature, reaction time, alkalinity and calcium ion concentration was summarized. The final experimental results show that the compound scale inhibitor has good scale inhibition performance at low application concentration. At the same time, the calcium ion resistance, alkali resistance, high temperature resistance and effective time of the compound scale inhibitor are improved.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TE358.5
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本文編號(hào)：2092163