试验研究
张滨：压裂采出液对“五合一”脱水效果的影响规律研究
压裂采出液对“五合一”脱水效果的影响规律研究张滨
摘要：外围低渗透油图95%以上的新井需压裂后投产，压裂后50%左右压裂液随采出液直接进入联合站，含有压裂液的果出液对联合站油系统平稳运行冲击很大，造成油永难以分离。以大规模压裂并压裂返排液为研究对象，在明确油井压黎后返排液的返排规律基础上，分析其含压裂液采出液的流变性、乳化情况。室内实验模拟不同压裂液含量的采出液样品，在现有的运行况降时间和沉降温度条件对脱水效果的影响及规律。实验结果表明：温度对脱水影响最大；其次是沉降时间，沉降时问间在1h之内，对脱水效果影响较明显。该实验结果可指导和保证油图脱水系统的稳定运行。
关键词：采出液；压裂返排液；脱水效果；影响规律 Doi : 10.3969/j.issn.10066896.2017.3.007
Study of Influence Rules of Produced Liquid with Fracturing Fluid on "Five in One" De
hydrationEffect Zhang Bin
Abstract: Before producing, fracturing should be used to more than 95% of new wells in peripheral low permeability oil fields, and after fracturing about 50% of fracturing fluid directly flows into the multipurpose station with produced liquid, which hes greatly impact on system stable running of the station and makes it difficult to separate oil and water. Studying the fracturing fluid of largescale frac turing wells and making sure its flow back rule, the rheological property and emulsifying condition of produced liquid with fracturing fluid are analyzed. Laboratory test simulates the influence and its rules of produced liquids with different fracturing fluids content on dehydration effect under existing running so saeaoeros searseiedaoaas aoaa fluenced by temperature. The second influence factor is sedimentetion time, which is more obvious within 1 hour. The results can guide and ensure the stable running of dehydration system in the oilfield Key words: produced liquid; fracturing flowback fluid; dehydration effect; influence rules
为有效动用难雄采储层，实施大规模压裂作业成
为增油上产的主要措施，作业后部分压裂液将返排出来，但是另一部分残留在地层中的压裂液会随采出液采出进人联合站脱水系统，对联合站脱水系统造成一定的影响。为此，针对含交联胍胶为主的压裂液进人联合站脱水系统后对系统产生的影响，进行含压裂液采出液对“五合一”脱水效果的影响规律研究，以达到脱水系统平稳运行的目的。
压裂液返排液机理分析 1
1.1压裂返排规律
油并压裂投产后，采出液产生顺序遵循以下规
大庆油田有限责任公司第九案油厂 24
万方数据
律：初期是破胶后压裂液，油并见油后进人脱水系统的是油水混合物，最终是原油乳状液。油井见油后，采出液主要为破胶后的携砂液及前置液、油形成的混合物或乳状液"-（图1)。
压裂采出液流变性分析
1.2
油井压裂12天后，采出液为返排水与油形成的乳状液，经测定含水率为14%，黏度曲线如图2 所示。用分离出的纯油与模拟水（不含压裂液）模拟配制成含水率为14%的乳状液，其黏温曲线如图 3所示。对比2条曲线表明，含压裂液乳状液黏度大于普通采出液黏度，处理难度增加。
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