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文章介绍了基于井筒、地层复杂状况及锁作业现场需要,研究应用环空测井找漏施工工艺,可以有效降低作业成本,缩短施工占井周期。还可根据实际情况,在注入剖面和产出剖面两种状态下测量,找漏结果更加真实可靠。该方法在FU124等井成功应用,并取得了较好效果。 相似文献
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苏里格东部气田钻井过程中井漏是比较难解决的问题,因井漏造成钻井成本超额增加、施工周期延长。根据钻井完井资料统计,有部分井发生了比较严重的漏失。如何解决井漏,快速、安全、按时完成钻井任务是长期困扰气田开发的难题。笔者就钻井过程中的井漏问题,在对比研究邻井井漏资料的基础上,根据现场堵漏所采取的措施,以及参考部分文献,分析了苏东井漏的工程地质原因,提出了解决本区块堵漏技术措施并取得了一定的效果。 相似文献
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油、套管和井下组件的微小渗漏,给油气井泄漏源位置的确定带来了很大的挑战.流体(液体或气体)发生渗漏,出现紊流现象时,会产生高频超声波.通过检测超声波的强度,能够精准地定位泄漏源位置.尽管渗漏量微小至0.02升/分钟,泄漏源位置能够被精准定位至几英寸误差范围内.实例说明,与常规检测技术相比,超声找漏测井能够直观、准确地判断井下泄漏源位置,为渗漏补救措施的选择提供依据. 相似文献
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高温高压深井测试找漏工艺分析 总被引:1,自引:1,他引:0
对于套管存在漏点的高温高压深井,常规找漏的方法不能适用,而利用地层测试器带耐高温高压的电子压力计进行找漏,可以解决该类问题。介绍了测试管柱结构、管柱强度计算和找漏施工实例。实践证明工艺可行,结果可靠。 相似文献
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The use of horizontal and multilateral wells in the oil industry has increased rapidly during the last two decades. The main reason for this upsurge is that horizontal and multilateral wells provide a large contact area with the reservoir, and therefore enhance the well productivity or injectivity better than conventional vertical wells. The high productivity coupled with the recent advances in drilling technology for horizontal and multilateral wells has made their application an economically viable option. In this study, the performance of nonconventional wells in water flooding projects was investigated using numerical simulation techniques. Extensive three-dimensional, fine-mesh simulation runs are performed to determine the oil recovery by nonconventional wells under different operating/reservoir conditions. Results show that the pattern used has a significant effect on the displacement performance of nonconventional wells. The study shows the various conditions under which nonconventional wells will perform better than the use of conventional vertical wells. 相似文献
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Abstract The use of horizontal and multilateral wells in the oil industry has increased rapidly during the last two decades. The main reason for this upsurge is that horizontal and multilateral wells provide a large contact area with the reservoir, and therefore enhance the well productivity or injectivity better than conventional vertical wells. The high productivity coupled with the recent advances in drilling technology for horizontal and multilateral wells has made their application an economically viable option. In this study, the performance of nonconventional wells in water flooding projects was investigated using numerical simulation techniques. Extensive three-dimensional, fine-mesh simulation runs are performed to determine the oil recovery by nonconventional wells under different operating/reservoir conditions. Results show that the pattern used has a significant effect on the displacement performance of nonconventional wells. The study shows the various conditions under which nonconventional wells will perform better than the use of conventional vertical wells. 相似文献
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大港油田水平井保护油层钻井液技术 总被引:3,自引:1,他引:3
水平井油层保护工作比普通开发井更为重要,其重要环节是钻井液的油层保护工作。大港油田集团钻井泥浆技术服务公司针对大港油田和冀东油田断块型砂岩油层特点,依据不同的完井方式,研究出适应不同区块、不同完井方式的水平井钻井液保护油层方案,在75口水平井进行了现场应用,取得了较好的油层保护效果,平均渗透率恢复值达到86.75%,试验井原油产量均超过配产指标。现场应用结果表明,广谱型屏蔽暂堵和理想充填保护油气层技术能实现有效暂堵,确保封堵效果,非常适用于非均质砂岩油藏的油层保护,其中理想充填保护油气层技术是借助计算机软件工作,操作更方便,它更适用于高孔高渗的砂岩油藏;低固相超低渗透保护油气层钻井液技术适应筛管完井的水平井油层保护,具有较高的现场应用价值;油层保护研究必须按区块、分层位进行,油层保护方案必须个性化,才能取得理想的效果。 相似文献
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浅层丛式水平井技术是吉林油田扶余地区完善井网、高效开采的有效手段,而浅层丛式水平井的井眼轨迹控制是其成功实施的关键技术。通过对吉林油田扶余城区12号丛式水平井组井口间距小、井浅、井多等技术难点的系统分析研究及现场钻井试验总结,形成了一套完善的浅层丛式水平井井眼轨迹控制技术,即优化井口排布、直井段防斜打直、优选造斜点、轨迹误差保守计算、优化钻具组合、提高轨迹测量精度、有效防碰绕障和精细施工等。并利用该技术在扶余城区12号丛式水平井组顺利实施32口井(其中水平井23口,大位移定向井8口,直井1口),创下国内单个平台水平井数量最多的纪录。现场应用表明,浅层丛式水平井技术可成功解决因井场征地困难、地面受限等原因造成的储量难动用问题,为扶余油田受限油藏的集约、有效开发提供了一种新的途径和方法,具有广阔的应用前景。 相似文献
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李胜利 《大庆石油地质与开发》2005,24(4):67-68
针对水平井长水平段上的基岩酸化,介绍了扶正节流滑套投球管柱分流工艺的原理及适应性.室内分流模拟实验结果表明平均节流量在60%以上,可起到分段酸化目的。该工艺起下管柱安全,具有反洗通道,一次作业不上提管柱,即可近似连续油管的回收过程进行逐点逐段处理,最大限度地利用地面设备功率,提高酸化施工排量。 相似文献
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H. S. Al-Hashim 《Petroleum Science and Technology》2013,31(9):933-942
Abstract This article presents an experimental investigation to study the effect of horizontal injector well length on oil recovery in a five spot water flood pattern having arrays of horizontal wells. The results of this study show that breakthrough recovery increases as the length of the horizontal injection well increases. However, recoveries at 95% water cut were found to be almost the same for all the injection well lengths investigated. It is also found that the additional recoveries after water breakthrough decreases as the length of the horizontal injection well increases. This is associated with sharp increase in % water cut after breakthrough. 相似文献
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海上稠油热采工艺已逐渐由单一的吞吐热采向注采一体化、蒸汽驱工艺发展,通过有效的监测手段获取井筒沿程及水平段的温度数据,对于海上蒸汽驱注汽井尤为重要。分布式光纤监测技术是近几年来发展起来的一项井下测试新技术,与传统测试技术相比,具有实时、稳定、长效等特点,具有无可比拟的技术优势。但海上热采井多为水平井且工艺管柱复杂,应用工况恶劣,安全要求高,监测难度大。结合海上热采井特点和蒸汽驱监测工艺,开展了水平井蒸汽驱光纤监测技术研究,并研制了关键配套工具,形成了一套水平井管内外穿越转换光纤监测工艺。该项测监工艺不仅能监测油管环空温度,了解注汽管柱隔热效果,而且能监测水平段的温度,了解水平段吸汽情况。现场应用结果表明,该监测技术具有耐高温、耐高压、实时、长效的特点,能为海上稠油蒸汽驱以及规模化热采开发提供科学依据,具有较好的应用前景。 相似文献