| 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《低固相压井液性能指标及评价方法》,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 |
| DOI：10.3969/j.issn.1007-3426.2016.04.015 |
| 分类号: |
| 文献标识码:A |
| 基金项目: |
|
| reparationofanewoil-solublepluggingworkoverliquidwithlowsolidphase |
|
XieYing1, XiongQiyong2, MengXiangjuan1, QiaoXin3, PengJianyun1, ZhouLizhi1
|
|
1.TarimOilfieldOilandGasEngineeringResearchInstitute,Korla841000,China;2.XinjiangOilfieldOilandGasEngineeringResearchInstitute,Karamay834000,China;3.Instituteof MaterialScienceandEngineering,SouthwestPetroleum University,Chengdu610500,China
|
| Abstract: |
| A new oil-solubleplugging workoverliquid withlow solidphase waspreparedfor
applicationinhightemperatureandhighsalinityreservoir.Differentsingleagentswereselectedin
experiment,andaccordingtotheresultthebestformulawasoptimized:purifiedformationwater+1
wt%XFclaystabilizer+0.01wt% TF-280Drainageagent+0.7wt% disodium EDTAferricion
stabilizer+1.0wt% KY-6Sfiltrationreducer+4wt%oilsolublepluggingagent(qualityratioofC9
petroleumresinandC5petroleumresinis1.5∶1.0)+0.030wt% AESdispersant.Theoptimized
workoverfluidpropertiessuchasapparentviscosity,staticsuspensiontime,hightemperatureand
highpressurewaterloss(93℃,3.45MPa),retentionrateof24htemperatureresistanceviscosity,
temporarypluggingrateandcorepermeabilitydamageratewereevaluated.Theresultsshowedthat
theoptimizedworkoverfluidpropertiesarebetterthantheindustrystandardSY/T5834-2014,and
theworkoverfluidcanbewellusedforworkoverinhightemperatureandhighsalinityreservoir. |
| Key words: :hightemperature,highsalinity,lowsolidphase,oil-solublepluggingworkoverliquid,temporarypluggingrate,damagerateofcorepermeability |
