共查询到19条相似文献,搜索用时 93 毫秒
1.
2.
3.
四川盆地的涪陵、威远、长宁、威荣等页岩气田的勘探与开发一般使用油基钻井液作业,产生了大量的含油钻屑,含油钻屑处理不当不仅浪费资源还会对环境产生严重危害。以较高含油率(20%以上)的油基钻屑为研究对象,采用溶剂浸取法处理油基钻屑,研究出一种适用于四川页岩气井油基钻屑的新型高效浸取剂体系。新型高效浸取剂体系主要由高效聚醚除油溶剂 PDS- 2、高效阴离子表面活性剂 AST- 1 和润湿反转剂WRA- 5 组成,优化处理油基钻屑的工艺条件,并对其除油效率进行评价。实验结果表明,当固液比为 1∶5,实验温度为 40℃,搅拌速度为 250r·min- 1,搅拌时间为 8min 时,新型高效浸取剂的除油效率较高,一次浸取处理除油效率在 90%以上,二次浸取处理除油效率 99%以上,满足直接排放标准。 相似文献
4.
5.
《现代化工》2017,(3)
西南某油气公司页岩气开采油基钻屑样品成分复杂,处理难度大,在对其进行理化指标分析的基础上,采用热化学洗涤法进行基油分离处理。通过正交试验确定除油剂中各药剂对除油效果的影响程度:基油剥离剂润湿反转剂渗透剂;最佳加药量:基油剥离剂S的质量浓度为0.5 g/L,润湿反转剂CTAB的质量浓度为150 mg/L,渗透剂OT的质量浓度为50 mg/L。通过单因素实验优化工艺参数,考察了温度、pH、时间、洗涤次数、除油剂与油基钻屑的体积比对油基钻屑除油工艺的影响。结果表明:调节pH在4左右,V(除油剂)∶V(钻屑)为3∶1,洗涤温度为50℃,洗涤时间为1.5 h,基油分离后泥饼石油类物质质量分数低于1%,同时,分离液可循环用于新的油基钻屑稀释,分离效果良好。 相似文献
6.
页岩气开发处理过程中会产生大量对生态环境和人体健康造成严重危害的油基钻屑。为了实现油基钻屑的资源化利用,本文研究了热解终温对油基钻屑热解产物分布和特性的影响。结果表明,油基钻屑中的油水轻组分在50~250℃之间受热汽化逸出,碳酸盐在450℃之后大量分解,油基钻屑中的硫元素在气相中主要以H2S形式存在。随着热处理温度升高,固相残渣收率明显降低,气相收率明显升高,油水收率缓慢升高。测试结果表明,在热解温度不低于300℃时,油基钻屑残渣的含油量可降低至0.3%(质量分数)以下。热解回收油组成主要为白油,沸程与柴油相当,油品品质优秀。油基钻屑热解的气体总产量随着热解温度的升高逐步升高。结果认为,在油基钻屑热解工业化的过程中,应该控制热解终温保持在450℃以下,以避免能量的浪费和有害气体的逸出,同时增加传热效率,保证物料热解完全。 相似文献
7.
8.
9.
汪佳晖 《中国石油和化工标准与质量》2023,(20):160-162
随着南海东部油气资源勘探开发的全面提升,大位移井的数量也呈逐年递增趋势。为满足大位移井工程需要,油基泥浆也随之广泛应用,产生的含油钻屑将对海洋石油开发的环境监管及成本费用造成了巨大的压力。本文重点介绍南海东部冬季季风期某海上平台使用电磁感应热脱附处理技术及钻、减一体化处理工艺对含油钻屑进行减量化处理,为海上平台随钻处理含油钻屑提供了借鉴思路及方向。 相似文献
10.
国内外页岩气钻井液技术应用现状 总被引:4,自引:0,他引:4
介绍了国内外页岩气钻井液技术及其应用情况,大部分页岩油气水平井采用油基钻井液,直井或定向井多采用水基钻井液;国内油基钻井液技术较为成熟,处理后的含油钻屑能达到环保要求。 相似文献
11.
选用Rheo-Stress 6000型高温高压流变仪,测定不同密度、不同温度(60℃、120℃、150℃、180℃和200℃)和压力梯度下白油全油基钻井液的流变特性。实验结果表明,无论哪种密度的油基钻井液,温度升高都使其表观粘度、剪切应力降低,压力增加都使其增大:150℃的高温下,随着压强的增加,钻井液粘度增幅越来越小,后期趋于平缓,温度和压力同时作用于钻井液流体时,温度占主导作用;在较高的压力和温度下,白油全油基钻井液体系仍有很好的塑性粘度和动切力;此配方白油全油基钻井液在高温高压条件下体系稳定,剪切稀释性好。 相似文献
12.
在油基钻井液中加入适量的润湿剂,可以使其体系中的惰性固相具有强的亲油性,从而保证油基钻井液体系的稳定性和各种性能的调节及控制。室内对3种润湿剂:阳离子表面活性剂CTAB、生物表面活性剂CQ-WBP、甜菜碱型两性离子表面活性剂CQ-WZB进行表面张力、润湿角测定和重晶石在油相中的沉降实验。实验结果表明,3种润湿剂在改变重晶石等亲水性物质的能力强弱顺序为:CQ-WBPCQ-WZBCTAB。生物表面活性剂CQ-WBP加入油基基浆中,不但能够大幅度改善油基钻井液性能,还具有一定的抗温能力。 相似文献
13.
14.
New emulsifiers were developed by esterification of polytriethanolamine based on the dimerization and trimerization of triethanolamine.
The dimer and trimer were esterified with oleic acid to prepare monoesters of di-triethanolamine and tri-triethanolamine.
The synthesized esters were evaluated as water-in-oil emulsifiers in oil-based muds, which are the circulating fluids used
in rotary drilling to perform various functions required in the drilling operation, such as control of density, flow, and
filtration properties. The dimer and trimer of triethanolamine were also esterified with hydrolyzed cottonseed oil, and the
resulting esters were evaluated as commercial emulsifiers for oil-base muds. 相似文献
15.
针对新疆油田二开井身结构的难题开展钻井液技术室内实验研究。分析该区块的地质特点以及不下技套钻井液技术难点,确定采用钾钙基聚磺钻井液体系,结合室内实验,通过对蒸馏水、常规聚磺钻井液以及钾钙基聚磺钻井液采用泥页岩膨胀实验测试方法进行测试,发现浸泡在钾钙基聚磺钻井液中的岩样,24 h后膨胀高度为0.68 mm。确定钾基聚磺钻井液具有较强的抑制页岩水化膨胀和分散的能力。同时进行岩屑滚动回收率评价,钾钙基聚磺钻井液体系对钻屑有很好的抑制分散的作用,钻屑回收率高达85.2%,在现场得到了良好的应用。 相似文献
16.
Drill cutting decontamination by microwave drying has been studied over the past few years and has proved to be a promising technology. This study aimed to investigate fundamental aspects of kinetics of heating and drying of drilling fluids and drill cuttings by microwaves. The microwave heating curve of cuttings free of fluid, drilling fluids, and pure organic compounds usually used in the formulation of these fluids was evaluated to understand the behavior of each component in microwave cutting decontamination. Furthermore, commercial software was used to describe the heating kinetics of the drilling fluids used in this study. The drying kinetics of cuttings contaminated with these drilling fluids was also studied at three temperatures of control. Some classic models of conventional drying of solids were used to describe the removal kinetics of the liquid components present in contaminated cuttings (water and organic compounds). Important aspects related to the interaction of these components in the drying operation and solid heating, water evaporation, and the drag of organic compounds were investigated. Both drilling fluids showed a very similar kinetic heating. Pure organic bases did not show a significant heating. For the same drying time, the removal of paraffin is more intense than the olefin. In respect to organic component removal from cuttings contaminated with both fluids, the kinetic drying curves are similar. The Page model was the one that best describes the drying operation of drill cuttings contaminated with both drilling fluids. The microwave drying model (MDM) model is proposed in this work as a simple modification in the Henderson–Pabis model: the addition of a third parameter. The incorporation of this parameter enabled a better fit of the experimental data. Computational simulations show an electric field with symmetrical patterns for the two BR-MUL fluids analyzed. 相似文献
17.
18.
According to the conventional evaluation methods of drilling fluids, the inhibitive property of polyoxyalkyleneamine (POAM), which was prepared in the laboratory, to sodium montmorillonite (Na-MMT) was investigated, and the shale cuttings recovery ratio and the rheological properties of drilling fluids were measured before and after adding POAM in several water-based drilling fluids. The results showed that POAM was completely water-soluble, exhibited the superior performance to inhibit the hydration of Na-MMT and reduced the swelling or hydration of shale cuttings effectively. In addition, the determination of the biological toxicity and compatibility of POAM indicated that POAM was low toxic and compatible with other common drilling fluid additives. 相似文献
19.
为了提高瓦斯抽放效率,明确合理的瓦斯抽放钻孔封孔长度,基于对瓦斯抽采钻孔封孔深度影响因素的分析,结合巷帮应力分布状态,采用钻屑法对瓦斯抽放钻孔封孔长度进行了研究。研究表明,瓦斯抽采钻孔的封孔深度须穿过巷帮卸压区,进入应力升高区才能起到较好的封孔效果。运用钻屑法测定南岭煤矿4101工作面卸压带范围和应力峰值所在位置,确定了其合理封孔深度为8~10 m,通过现场应用表明,瓦斯抽采效率提高25%以上。 相似文献