CAJ | 학술논문

油田进入高含水期，地面及集输系统的结垢问题日趋严重，针对新疆某油田的结垢特点，本文选取3个区块7口典型井，通过 XRD测试油井结垢的主要产物，分析了结垢的原因，采用 EDTA 滴定法考察了时间、温度、pH 值、成垢离子浓度对结垢的影响规律，同时用静态阻垢法评价了一种复配型阻垢剂的应用效果。结果表明：该油田结垢以CaCO3为主；结垢动力学在9h 发生突变；随着温度升高，碳酸钙垢在水中的溶解度降低；pH 值越高，形成垢的趋势越强；Ca2+、Mg2+和 HCO-3浓度增加，结垢均增加，对垢的形成有一个促进作用。添加体积比为1∶1的 HX-1/WAS复配阻垢剂后，阻垢率达到93.9%以上，使用效果优良。
유전진입고함수기，지면급집수계통적결구문제일추엄중，침대신강모유전적결구특점，본문선취3개구괴7구전형정，통과 XRD측시유정결구적주요산물，분석료결구적원인，채용 EDTA 적정법고찰료시간、온도、pH 치、성구리자농도대결구적영향규률，동시용정태조구법평개료일충복배형조구제적응용효과。결과표명：해유전결구이CaCO3위주；결구동역학재9h 발생돌변；수착온도승고，탄산개구재수중적용해도강저；pH 치월고，형성구적추세월강；Ca2+、Mg2+화 HCO-3농도증가，결구균증가，대구적형성유일개촉진작용。첨가체적비위1∶1적 HX-1/WAS복배조구제후，조구솔체도93.9%이상，사용효과우량。
Along with oilfield water content rising,the scaling phenomenon is quite severely in the ground and gathering system.In view of the scaling characteristics of Xinj iang oilfield,Seven typical wells of three areas were selected.The scaling reason in oil well was studied by X-ray diffraction measurement to scale obtained from oilfield.Influences of environmental factors, such as time, temperature,pH value, concentration of scaling to scaling were investigated by EDTA titration method.The application efficiency of a novel complex scale inhibitor was evaluated by using the static scale inhibitor method.It is found that the scale of the oilfield is mainly composed of carbonate scale.The scaling kinetics changes suddenly at 9h.The raising temperature will decrease the solubility of the scale of CaCO3 in the water.The higher the pH value is,the stronger the tendency formed of carbonate scale is.The raising concentration of Ca2+,Mg2+ and HCO-3 is in favor of the formation of carbonate scale.Inhibition efficiency of the complex scale inhibitor composed of HX-1 and WAS with volume ratio 1∶1 is more than 9 3.9%,which shows good application effect in the oilfield.