發(fā)布時(shí)間：2018-07-12 11:46

  本文選題：中高溫緩凝劑 + 自由基共聚�。� 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：油井水泥緩凝劑是油井水泥三大助劑(調(diào)凝劑、降失水劑、分散劑)之一,是應(yīng)用范圍較廣的水泥外加劑。隨著深井、超深井的層出不窮,對(duì)油井水泥緩凝劑,尤其是高溫緩凝劑的需求越來越多,因此,高溫緩凝劑成為近年來固井外加劑研發(fā)的主要方向。本文詳細(xì)地研究了中高溫緩凝劑體系,自主制備出適用于60-150?C(井底循環(huán)溫度)的中高溫油井水泥漿用緩凝劑。根據(jù)自由基水溶液聚合機(jī)理,合成四元共聚物緩凝劑(AMPS/AA/SSS/IA),測(cè)定結(jié)果顯示所合成的共聚物確為目標(biāo)產(chǎn)物。通過正交實(shí)驗(yàn)的方法,確定共聚物的最佳合成條件:溶液pH為6、引發(fā)劑加量為2.5%、聚合時(shí)間為5 h、聚合溫度為60?C。分別從加量敏感性、溫度敏感性與水泥漿稠化時(shí)間的線性關(guān)系、緩凝劑加量對(duì)水泥石抗壓強(qiáng)度的影響、緩凝劑與降失水劑的配伍性等多個(gè)方面。評(píng)價(jià)結(jié)果顯示:自主合成的中高溫緩凝劑的加量與水泥漿的稠化時(shí)間呈現(xiàn)出較好的線性關(guān)系,抗溫能力在150?C以上,與固井公司敏感度都能控制在20%以內(nèi),說明該中高溫緩凝劑是一種綜合性能優(yōu)異的油井水泥緩凝劑。該緩凝劑可用于常規(guī)密度水泥漿體系、高密度水泥漿體系、高密度高強(qiáng)度水泥漿體系,與體系中的其他外加劑配伍性好。該中高溫緩凝劑已應(yīng)用于固井公司興隆臺(tái)現(xiàn)場(chǎng)的兩口井,現(xiàn)場(chǎng)施工正常,固井質(zhì)量合格。
[Abstract]:Oil well cement retarder is one of the three additives (coagulant, water loss reducing agent, dispersant) of oil well cement, and it is widely used as cement additive. With the emergence of deep wells and ultra-deep wells, the demand for oil well cement retarder, especially high temperature retarder, is increasing. Therefore, high temperature retarder has become the main direction of research and development of cementing additives in recent years. In this paper, the medium and high temperature retarder system is studied in detail, and the retarder for medium and high temperature oil well cement slurry suitable for 60-150 C (bottom hole circulation temperature) has been prepared by ourselves. Quaternary copolymer retarder (AMPS / AA / SSS / IA) was synthesized according to the mechanism of free radical polymerization in aqueous solution. The results show that the synthesized copolymer is the target product. The optimum synthesis conditions of the copolymers were determined by orthogonal experiment: solution pH 6, initiator dosage 2.5, polymerization time 5 h, polymerization temperature 60 鈩，

本文編號(hào)：2117048