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海洋深水油基钻井液的研究

Development of Deep Water Oil Base Drilling Fluid

作者: 专业:化学 导师:王鉴 年度:2015 学位:硕士  院校: 东北石油大学

Keywords

deep water-oil-based drilling fluid, rheological property, Flow pattern regulator, per formance evaluation, dosage optimization

        随着钻井技术的快速进步和对海洋石油资源认知水平的不断增长,目前的海洋油气勘探开发已走向深海以及超深海。深水钻井的作业十分复杂,深水钻井液面临许多困难,例如在不同温度范围下钻井液的流变性控制,低温高压下的气体水合物问题,高温高密度下加重材料沉降问题,以及窄压力窗口下钻井液漏失问题等。因此开发海洋深水钻井液迫在眉睫。油基钻井液相比水基钻井液具有更好的的抗温性和可控的流变性能,电稳定性好,抗钻屑、抗水污染能力强,窄压力窗口条件下能够保持良好的沉降稳定性和滤失性,所以选择油基钻井液作为海洋深水钻井液是最好选择。本文首先对深水油基钻井液技术进行调研,并对油基钻井液处理剂进行分析,通过机理分析及实验验证筛选出性能最佳的几种关键处理剂;其次考察了不同条件对油基钻井液流变性的影响规律,通过单剂评价、体系评价两种方法对处理剂加量及配比进行调整,选出最优处理剂加量,并且复配了乳化剂,以及制备了有机土和流型调节剂两种关键处理剂,其中合成乳化剂在体系中电稳定性能较强,流型调节剂可满足低温下深水油基钻井液流变性能的调整,并且能够提高钻井液切力;最后,完成深水油基钻井液的最优配方,本深水油基钻井液具有低粘高切,宽温度及压力范围下流变性恒定,抗钙土、海水污染能力强等特点,能够满足深水高温高压井的作业,为深水井的勘探开发提供理论支持和技术保证。最终配方:基液(185V气制油)+1%主乳化剂(SP-80+硬脂酸钙)+0.8%辅助乳化剂(OP-10)+2%自制有机土+1%流型调节剂+1.2%润湿剂(WET-L)+3%降滤失剂(HFR-L)+2.5%氧化钙+25%饱和氯化钙溶液+重晶石,油水比为8:2。
    With the rapid progress of drilling technology and the cognitive level of the growing offshore oil resources, for offshore oil resources of Marine oil and gas exploration and development from the shallow to the deep sea, and even ultra deep sea. Deep well operation situation was complex, the drilling fluid is faced with many problems, such as drilling fluid rheology control under wide temperature range, low temperature under the high density of gas hydrate, settlement of weighting materials under high temperature and high density, and narrow pressure window of drilling fluid leakage problems. So the development of Marine deep water drilling fluid is imminent. Oil-base drilling fluid relative to the water-based drilling fluid has good temperature resistance and controllable rheological properties, good stability, sludge resistance, resistance to water pollution ability, narrow window can maintain good sedimentation stability under the condition of pressure and filtration, choose oil-base drilling fluid as Marine deep water drilling fluid is the best choice.This article first to the deepwater oil-base drilling fluid technology research, and analyze the mechanism of oil-base drilling fluid treatment agent, through the mechanism analysis and experimental verification screening several key performance is the best treatment agent,Second, master the influence law of different conditions on the oil-base drilling fluid rheological property, by a single dose evaluation and system evaluation of two kinds of methods for treating agent added amount and ratio adjustment, to select the optimal treatment agent added amount, and the synthetic evaluation of the two kinds of emulsifier, flow Pattern regulator key treatment agent, including synthesis of emulsifier stable electricity in the system performance is strong, deep water flow Pattern regulator can meet the low temperature adjustment of oil-base drilling fluid rheological properties, and can improve drilling fluid shear. Finally, complete the deep oil-base drilling fluid, the optimal formula, this deep water cut oil-base drilling fluid with low viscosity high, wide temperature and pressure range.The final formula:Base oil(gas to liquid 185V)+The main emulsifier(SP-80+Calcium stearate)+Auxiliary emulsifier(OP-10)+2% of Homemade organic soil+1% of Flow Pattern regulator+1.2% of Wetting agent(WET-L)+3% of filtrate reducer(HFR-L)+2.5% of Calcium oxide+25% of Saturated calcium chloride solution+barite,oil-water ratio,8:2.
        

海洋深水油基钻井液的研究

摘要5-6
Abstract6
创新点摘要7-10
前言10-11
第一章 文献综述11-17
    1.1 国内外油基钻井液的发展12-15
        1.1.1 油基钻井液的研发与应用12-13
        1.1.2 国外油基的研发与应用13-14
        1.1.3 国内油基钻井液的研发与应用14
        1.1.4 油基钻井液的分类及其优缺点14-15
    1.2 油基钻井液性能指标15-16
    1.3 深水油基钻井液的发展方向16
    1.4 本课题研究的内容16-17
第二章 油基钻井液实验方法17-20
    2.1 实验仪器17
    2.2 试验方法17-20
        2.2.1 油基钻井液流变性测定17-18
        2.2.2 油基钻井液滤失量测定18-19
        2.2.3 高温老化测定19
        2.2.4 密度和粘度的测定19
        2.2.5 含砂量的测定19
        2.2.6 电稳定性的测定19
        2.2.7 沉降稳定性的测定19-20
第三章 深水油基钻井液配方的研制20-46
    3.1 基液的优选20
    3.2 乳化剂的优选与评价20-25
        3.2.1 乳化剂优选20-23
        3.2.2 乳化剂加量优选23-24
        3.2.3 乳化剂抗高温高压性能24-25
    3.3 有机土的优选与制备25-29
        3.3.1 有机土成胶率测量25
        3.3.2 钠化有机土的制备25-27
        3.3.3 有机土性能27-29
    3.4 润湿剂的优选与评价29-32
        3.4.1 润湿剂优选29-30
        3.4.2 润湿剂抗钙土污染性30-31
        3.4.3 润湿剂抗海水污染性31-32
    3.5 降滤失剂的优选与评价32-36
        3.5.1 降滤失剂优选32-35
        3.5.2 降滤失剂热重分析35-36
    3.6 流型调节剂的优选与评价36-38
        3.6.1 流型调节剂的优选36-37
        3.6.2 流型调节剂的性能评价37
        3.6.3 苯乙烯与α-烯烃改性聚合物热重-差热分析37-38
    3.7 不同处理剂加量对深水油基钻井液性能的影响38-45
        3.7.1 深水油基钻井液油水比的确定38-39
        3.7.2 流型调节剂加量对深水油基钻井液的影响39-42
        3.7.3 有机土加量对深水油基钻井液的影响42
        3.7.4 氧化钙加量对深水油基钻井液的影响42-43
        3.7.5 降滤失剂加量对深水油基钻井液的影响43-44
        3.7.6 深水油基钻井液加重实验44-45
    3.8 小结45-46
第四章 深水油基钻井液体系的性能评价46-52
    4.1 深水油基钻井液抗温性46-47
    4.2 压力对深水油基钻井液恒流变的影响47-49
    4.3 抗海水污染性49-50
    4.4 抗固相污染性50-51
    4.5 小结51-52
结论52-53
参考文献53-57
发表文章目录57-58
致谢58-59
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