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针对涪陵地区钻井过程中易发生漏失、卡钻等问题,在涪陵地区易漏失地层进行气体反循环钻井地面测试及现场试验。结果表明,反循环钻井技术能够很好地适用于涪陵地区易漏失地层,并且能获得较高的机械钻速,对井壁干扰性小,完钻井眼质量好。研究结果不仅进一步验证了气体反循环钻井工艺的现场效果,也可为类似地质特征的地区开展气体反循环钻井并扩大应用范围提供借鉴。 相似文献
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气体钻井钻柱振动特性及控制措施 总被引:3,自引:0,他引:3
为解决气体钻井钻柱频繁失效的实际问题,综合考虑钻柱纵横扭耦合振动,根据气体钻井全井段钻柱系统动力学模型分析了气体钻井钻柱的振动特性,并从减振抑振角度提出了空气锤钻井工艺和采用减振减阻工具两种振动控制措施。以川西某实钻井气体钻进段为例,在利用美国ESSO公司现场数据验证全井段钻柱系统三向耦合振动力学模型可行性与结果可靠性的基础上,量化评价了常规气体钻井和采用振动控制措施气体钻井工艺的钻柱振动特性。对比分析表明,这两种工艺措施的减振抑振效果明显,不仅能够有效减弱气体钻井中下部钻柱的振动强度,而且使上部钻柱的动态应力也大大降低。 相似文献
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Power V自动垂直钻井系统等主动防斜打直技术已在钻井液钻井中得到了广泛应用,但气体钻井过程中也容易发生井斜,由于气体钻井过程中钻柱内外压差较低,无法开启现有垂直钻井工具的推靠机构,目前还没有成熟的气体钻井主动防斜打直技术。随着气体钻井技术在国内深井超深井提速中的广泛应用,急需研发适用于气体钻井的自动垂直钻井系统。根据钻井液钻井的自动垂直钻井系统基本原理,利用气体动力学特点,设计了一种分流式自动垂直钻井工具。该钻井工具基于气体动力学原理和流固耦合分析方法,利用分流气体方法,将分流喷射的反作用力用于调节钻头侧向力,实现了自动感应井斜及纠斜,达到了垂直钻井的目的。理论分析证明,利用该钻井工具可以实现气体自动垂直钻井。 相似文献
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深水蕴藏着丰富的油气资源,国内的油气勘探开发重点正在向海上转移.国外有相对成熟的深水钻井工艺,国内的深水钻井工艺研究刚刚起步,与之相配套的深水录井工艺在国内几乎还是空白.从HSE保障、油气显示发现及解释评价、优化钻井、钻井信息化建设等方面分析了国内深水钻井对录井的需求;从保障钻井安全、工程参数获取、岩屑采集、钻井液气体... 相似文献
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卡钻已成为当前大幅度降低钻井成本,提高钻井效益的主要障碍之一。总结了国内外对卡钻预测技术研究手成果,提出了实时监测进眼摩擦阻力是当前最适合我国国情的卡钻趋势预测方法。开发早期预测卡钻事故的软件是目前我国钻井工业面临的最迫切的任务之一,一旦实现必将带来巨大的经济效益。 相似文献
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5020A井是新疆石油管理局钻井工艺研究所设计、钻井处等单位配合于1985年7月15日钻成的一口大斜度定向井。该井的钻井目的是:避开上盘高压层钻达下盘的生产层。 相似文献
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X射线荧光元素录井在南堡油田潜山卡层中的应用研究 总被引:1,自引:1,他引:0
随着PDC钻头、大位移井和欠平衡井等钻井工艺的广泛应用,随钻录井中的岩屑变得细小、混杂,难以识别,给卡准潜山界面带来很大困难。针对这一现状,以X射线荧光元素录井技术为基础,对南堡油田岩石元素特征进行了分析研究,结合实钻岩屑元素资料,制作了岩性解释图板,划分了两种钻遇潜山类型,揭示了风化壳残积层元素发育规律,介绍了元素曲线随钻应用实例,总结出一套适用于南堡油田的潜山卡层新方法。现场试用表明,该方法是可行的,是常规潜山卡层方法的补充,为安全、快速钻井提供了重要技术支撑。 相似文献
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采油过程中,酸化是油气井增产、注水井增注的主要措施。砂岩基质酸化和碳酸岩基质酸化都是在低于储层破裂压力的条件下向地层中注入酸液,溶解地层中的可溶物质,清除孔隙或裂缝中的堵塞物质,从而使油气井增产或注水井增注的一种工艺措施。本文着重讨论了砂岩酸化的设计计算方法,并由此建立一套基质酸化设计方法。 相似文献
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《Oil and Energy Trends》2008,33(5):6-7
This section summarizes downstream developments of the previous month. Exploration & Production are covered in 'Upstream Review'.
An upsurge of violence in Iraq threatened a recovery in output that began earlier this year. Production in the northern fields hit a post-invasion high of 620,000 bpd in March, rising by 180,000 bpd in one month. Fighting in the south, however, cut production there by more than 100,000 bpd as government troops tried to subdue Shi'ite militias in and around Basrah. Oil installations damaged in the south included a pipeline and a pumping station. The Iraqi government nevertheless announced that oil production would reach 2.9 mn bpd by the year's end, requiring an increase of nearly 500,000 bpd over April 2008 levels. Foreign help is to be sought via a series of technical service agreements and - later this year - an upstream licensing round. Japan's Ministry of Economy, Trade and Industry says it wants a bigger role for Japanese oil companies in both the upstream and downstream sectors in Iraq. Kurdistan says it is negotiating with Baghdad to export oil produced from new oil fields there. The central government does not recognize production agreements drawn up by the Kurdistan Regional Government. The EU - desperate for gas to fill its Nabucco pipeline - has approached Iraq for up to 1 bn cfd. 相似文献
An upsurge of violence in Iraq threatened a recovery in output that began earlier this year. Production in the northern fields hit a post-invasion high of 620,000 bpd in March, rising by 180,000 bpd in one month. Fighting in the south, however, cut production there by more than 100,000 bpd as government troops tried to subdue Shi'ite militias in and around Basrah. Oil installations damaged in the south included a pipeline and a pumping station. The Iraqi government nevertheless announced that oil production would reach 2.9 mn bpd by the year's end, requiring an increase of nearly 500,000 bpd over April 2008 levels. Foreign help is to be sought via a series of technical service agreements and - later this year - an upstream licensing round. Japan's Ministry of Economy, Trade and Industry says it wants a bigger role for Japanese oil companies in both the upstream and downstream sectors in Iraq. Kurdistan says it is negotiating with Baghdad to export oil produced from new oil fields there. The central government does not recognize production agreements drawn up by the Kurdistan Regional Government. The EU - desperate for gas to fill its Nabucco pipeline - has approached Iraq for up to 1 bn cfd. 相似文献
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