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针对塔里木油田2005年钻具刺漏失效进行了大量的现场资料统计分析,总结出了钻具刺漏的主要特点,分析其刺漏机理,提出了适合塔里木油田钻具刺漏失效的预防措施和今后的一些建议。 相似文献
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对我国东海、渤海部分油田近年来钻井作业中发生的钻具刺漏失效事故的特点及发生的原因进行了分析,并对有效预防和减少海上钻具刺漏失效事故发生的技术措施进行了总结。严格执行正确的操作规程,可避免操作不当引发的钻具刺漏失效事故;使用专门研制的锥形泥浆滤网,可大大降低泥浆对钻具内壁的冲刷程度。为彻底解决泥浆滤网对钻具造成的损坏作用,在泥浆泵输入端安装滤网值得探索。 相似文献
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塔里木油田钻杆刺漏原因分析 总被引:3,自引:1,他引:2
对塔里木油田钻杆刺漏进行了大量的现场资料统计分析,总结出其钻杆刺漏位置主要发生在Φ244的套管内钻杆的母接头端的加厚过渡带,提出该位置是研究的重点。对塔里木油田和塔河油田钻杆失效进行了详细地对比分析,得出塔里木油田钻杆刺漏的主要原因:(1)高转速、高泵压以及大环隙比;(2)钻杆加厚过渡带及接头直角台肩根部疲劳裂纹扩展;(3)钻井液具有严重的腐蚀性,裂纹扩展处涂层剥落,发生严重的腐蚀疲劳,最终被高压钻井液冲蚀刺漏。针对这些原因,提出了塔里木油田钻杆刺漏的预防措施和建议。 相似文献
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钻具剌漏是钻井中常见的钻井事故,如发现不及时会导致钻具剌断落井,造成严重的井下钻具工具事故。文章就近几年川东北地区钻井作业中发生的钻具剌漏失效事故进行分析,发现刺漏主要发生在较深的地层中,且多发生在钻具的过渡带区域,刺漏呈矩形窗口状。 相似文献
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钻具刺漏是困扰钻井生产正常作业的普遍问题,如果不能及时发现并查找刺漏位置,会造成很大的经济损失。为解决钻具刺漏并及时发现查找刺漏位置,在比较气测法、钻具内泵入高黏钻井液、起钻时不停地灌钻井液等查找钻具刺漏方法的基础上,提出一种查找钻具刺漏位置的新方法--“棕绳结”,并就“棕绳结”查漏法的制作、原理及使用方法进行了简单的介绍。通过在塔河油气田施工的几口直井发生30余次钻具刺漏的现场试验,采用泵投“棕绳结”的方法成功率达到90%,充分展示了此方法的推广应用前景。 相似文献
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因钻具刺漏而引发钻井事故在钻井工程中较为普遍,及时监测、预报钻具刺漏现象是避免钻具事故发生的有效措施,综合录井技术在现场的应用.为工程事故预告创造了有利条件。该文通过几个典型实例的分析,较好地总结了钻具刺漏现象的资料特征和规律,为现场预报工作提供了借鉴。 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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