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针对葡西油田低渗透油层污染导致油井产量下降甚至停产的问题,通过现场实际分析了油井洗井、作业对油层产生的影响,介绍了几种油层保护及解堵措施方法,即振动解堵技术、微生物解堵技术、油层保护技术等,对油田现场生产具有一定的指导意义。 相似文献
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火烧油层采油技术的应用前景探讨 总被引:4,自引:1,他引:3
火烧油层,国外又叫“就地燃烧“(In-SituCom bustion),它利用油层本身的部分燃烧裂化产物作为燃料,利用外加的氧气源和人为的加热点火手段把油层点燃,并维持不断的燃烧,燃烧生热使温度达到1000℃,从而实现复杂的多种驱动作用.火烧油层技术是一种具有明显技术优势和潜力的热力采油方法,随着采油理论和技术的不断深化,火烧油层采油的应用前景得到了普遍的认可。目前火烧油层工艺正朝着三个方面继续发展:一是伴随燃烧物注入的多样化;二是新型助采技术的运用;三是火烧油层工艺的非常规应用.本文就火烧油层的概念,发展历程,原理,技术特点,应用优势,发展前景等相关问题进行了阐述和分析,并就其未来发展提出了几点建议。 相似文献
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油层损害的实质就是油层中流体阻力的增加、渗透率的下降,具体表现为油层中的"流体流不出来、注不进去"的堵塞现象。 相似文献
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范彦勤 《中国石油和化工标准与质量》2012,33(10)
随着油田的不断勘探与开发,厚油层的储量已经得到了广泛动用,致密储层、小层等渗透率低的油层逐渐成为油田开采的主力,也逐渐成为研究人员主要的科研公关方向.渗透率低的薄差储层,由于其岩性、岩相变化大,成岩作用复杂等地质特征,导致勘探开发难度比较大.本文根据本人实际工作经验,主要分析了鄂尔多斯盆地下石盒子油层储层特征及形成机理,以求更加准确的了解下石盒子油层的剩余油分别情况,为地质录井、储层预测及储层评价提供可靠依据. 相似文献
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范彦勤 《中国石油和化工标准与质量》2012,(9):140
随着油田的不断勘探与开发,厚油层的储量已经得到了广泛动用,致密储层、小层等渗透率低的油层逐渐成为油田开采的主力,也逐渐成为研究人员主要的科研公关方向。渗透率低的薄差储层,由于其岩性、岩相变化大,成岩作用复杂等地质特征,导致勘探开发难度比较大。本文根据本人实际工作经验,主要分析了鄂尔多斯盆地下石盒子油层储层特征及形成机理,以求更加准确的了解下石盒子油层的剩余油分别情况,为地质录井、储层预测及储层评价提供可靠依据。 相似文献
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火烧油层作为提高稠油资源采收率的重要有效的方法,具有明显技术优势和潜力,具有油藏适应范围广、物源充足、采收率高、成本低的优势。而火烧油层开发成功的关键是油层点火。而利用井底电加热点火器点燃地层原油是一种最常见的点火方法,即电点火工艺,其核心是电加热器,经试验成功率达100%,获得了良好的增有效果,较其它点火方式更好。 相似文献
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娄明 《中国石油和化工标准与质量》2012,33(12):247
在石油的勘探开发过程中,油层保护工作直接关系到斟探和开发的效果。在试油施工过程中,固相和滤液会对储层产生一定的影响,如果采用的工艺不适当,就可能会引起渗透率降低,对造成层造成损害,直接影响到油田的采出或注入能力。本文简要介绍了在试油施工中主要存在伤害因素,并提出了几点预防性建议。 相似文献
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基于综合录井技术的海拉尔盆地轻质油层识别 总被引:1,自引:0,他引:1
随着录井技术突飞猛进的发展,轻质油层的识别和判定实现了技术突破。海拉尔盆地轻质油层多,录井中油显示假象多样,利用钻井岩心及岩屑录井资料、井壁取心资料、气测录井资料、地化热解分析等资料的综合配套分析,可有效的识别和剔除油显示假象并准确识别轻质油层。笔者多年的现场经验总结认为:海拉尔盆地录井中出现普照岩屑发浅黄色荧光、点滴分析岩屑在滤纸片上发明显浅黄色荧光且呈扩散状、气测异常、地化热解分析S1值较高且S1/S2大于1等2-3个显示特征并存即可判定油层,当然,针对海拉尔盆地不同类储层,其显示级别和判别参数存在差异。 相似文献
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The apolar and hydrophobic jojoba molecule was made more hydrophilic by the incorporation of primary amino groupsvia the introduction and subsequent reduction of azido groups. The azides were obtained by the substitution of bromine or a mesylate
group introduced into the jojoba oil molecule; by opening of the epoxide ring in epoxy jojoba; or by the addition of bromoazide
to the double bonds of jojoba. 相似文献
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研究了不同条件(静置时间、速度梯度、温度、添加电解质)下模拟含油废水中浮油凝并聚结的过程,探讨了影响浮油稳定性的因素。实验结果及分析表明,适当的静置(20min左右)、一定的速度梯度(1.5~6.9 s~(-1))、较低的温度(5~20℃)以及加入电解质(如NaCl)均可降低浮油废水的稳定性。 相似文献
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Five vegetable oils were each randomized by chemical means (with the use of a sodium potassium alloy) and by enzymatic means
(using a nonspecific lipase). The success of the randomization procedure was confirmed via positional analysis. The oxidative
stabilities of the native and chemically randomized oils were determined at storage temperatures of 28°C and 55°C using absorbance
at 234 nm as indicative of conjugated diene content. No difference between curves occurred in oils stored at 55°C, however,
at the lower temperature all chemically randomized oils had significantly steeper slopes (P<0.05), suggesting a lower stability.
When both enzymatically and chemically randomized oils were compared to native oils at 28°C, no significant difference occurred
between slopes of native and enzymatically randomized oils, however, the end content of conjugated dienes was significantly
higher for chemically randomized canola, corn and soybean oils (P<0.05). No difference was seen between the slopes of the
three different oils from either linseed or sunflower. Since both of these oils exhibited higher oxidation rates, it is possible
that observation of differences between the stability of native and chemically randomized oild is dependent upon the rate
of the reaction. 相似文献
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Temperature effect on the viscosities of palm oil and coconut oil blended with diesel oil 总被引:1,自引:0,他引:1
One of the major difficulties in using crude vegetable oils as substitute fuels in diesel engines is their relatively high
viscosities. Increasing the temperature of the crude vegetable oil, blending it with diesel oil, or the combination of both
offers a simple and effective means of controlling and lowering the viscosities of vegetable oils. This work reports viscosity
data, determined with a rotational bob-and-cup viscometer, for crude palm oil and cononut oil blended with diesel oil over
the temperature range of 20–80°C and for different mixture compositions. All the test oil samples showed a time-independent
newtonian type of flow behavior. The reduction of viscosity with increasing liquid temperature followed an exponential relationship,
with the two constants of the equation being a function of the volume percentage of the vegetable oil in the mixture. A single
empirical equation was developed for predicting the viscosity of these fuel mixtures under varying temperatures and blend
compositions. 相似文献
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研究了用南阳脱沥青油生产凡士林的可能性,提出南阳脱沥青油含有较多的微晶蜡,滴点较高,不是生产凡士林的合适原材料;但若与蜡下油和中等粘度的润滑油、基础油调配后,可生产出同时满足医药和化妆用品标准要求的凡士林产品。 相似文献
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以黄岛油库为例,分析了油库混油现象的原因和解决的办法,在保证生产有序进行的同时,又确保同类不同牌号的油品质量不受影响,对成品油的贮运和管理提供了很好的借鉴。 相似文献
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