一种新型低固相油溶性暂堵型修井液的研制.pdf

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1、石油与天然气化工６８CHEMICALENGINEERINGOFOIL&GAS２０１６一种新型低固相油溶性暂堵型修井液的研制１２１３１１谢英熊启勇孟祥娟乔欣彭建云周理志１．中国石油塔里木油田油气工程研究院２．中国石油新疆油田油气工程研究院３．西南石油大学材料科学与工程学院摘要针对柯克亚高温高盐凝析气藏储层敏感性强、修井液与储层不配伍导致地层严重伤害以及修井液漏失严重等生产实际问题，制备了一种具有抗温抗盐好、对地层伤害低、暂堵屏蔽能力强和防漏失能力高的低固相油溶性暂堵型修井液。实验对不同单剂进行了优选，并根据优选结果设计出最佳配方：净化地层水＋１％（w）XF黏土稳定剂＋０．０１％（w）TF‐２８０

2、助排剂＋０．７％（w）EDTA二钠铁离子络合剂＋１．０％（w）KY‐６S增黏降滤失剂＋４％（w）油溶性暂堵剂（C９石油树脂与C５石油树脂质量比为１．５∶１．０）＋０．０３０％（w）AES分散剂。对该修井液体系的表观黏度、静态悬浮时间、高温高压失水量（９３℃，３．４５MPa）、２４h耐温黏度保留率、暂堵率和岩心渗透率损害率进行了评价，各项指标优于SY／T５８３４－２０１４枟低固相压井液性能指标及评价方法枠，表明该修井液性能良好，能应用于高温高矿化度油藏修井作业。关键词高温高矿化度低固相油溶性暂堵型修井液暂堵率岩心渗透率损害率中图分类号：TE３５８文献标志码：ADOI：１０．３９６９／j．issn

3、．１００７‐３４２６．２０１６．０４．０１５Preparationofanewoil‐solublepluggingworkoverliquidwithlowsolidphase121311XieYing，XiongQiyong，MengXiangjuan，QiaoXin，PengJianyun，ZhouLizhi（１．TarimOilfieldOilandGasEngineeringResearchInstitute，Korla８４１０００，China）（２．XinjiangOilfieldOilandGasEngineeringResearchInstitute，Karamay８３４０００

4、，China）（３．InstituteofMaterialScienceandEngineering，SouthwestPetroleumUniversity，Chengdu６１０５００，China）Abstract：Anewoil‐solublepluggingworkoverliquidwithlowsolidphasewaspreparedforapplicationinhightemperatureandhighsalinityreservoir．Differentsingleagentswereselectedinexperiment，andaccordingtotheresultt

5、hebestformulawasoptimized：purifiedformationwater＋１wt％XFclaystabilizer＋０．０１wt％TF‐２８０Drainageagent＋０．７wt％disodiumEDTAferricionstabilizer＋１．０wt％KY‐６Sfiltrationreducer＋４wt％oilsolublepluggingagent（qualityratioofC９petroleumresinandC５petroleumresinis１．５∶１．０）＋０．０３０wt％AESdispersant．Theoptimizedworkoverfluidp

6、ropertiessuchasapparentviscosity，staticsuspensiontime，hightemperatureandhighpressurewaterloss（９３℃，３．４５MPa），retentionrateof２４htemperatureresistanceviscosity，temporarypluggingrateandcorepermeabilitydamageratewereevaluated．Theresultsshowedthattheoptimizedworkoverfluidpropertiesarebetterthantheindustrys

7、tandardSY／T５８３４－２０１４，andtheworkoverfluidcanbewellusedforworkoverinhightemperatureandhighsalinityreservoir．Keywords：hightemperature，highsalinity，lowsolidphase，oil‐solublepluggingworkoverliquid，temporar