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杜229块蒸汽吞吐接替方式研究 总被引:1,自引:1,他引:0
杜229块属中厚互层状边底水超稠油油藏,目前已进入蒸汽吞吐开发中后期,急需进行开发方式转换.分析区块开发形势和存在的潜力,进行了蒸汽吞吐中后期多种接替技术的生产机理、筛选标准以及在该油藏的适应性研究.明确杜229块进行蒸汽驱开发的可行性,提出在单层厚度大、物性好的区域开展SAGD开发试验,进而提高油田采收率. 相似文献
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针对杜229块蒸汽驱先导试验井组局部生产井难受效,蒸汽突破、油井井况变差,油层纵向动用不均等开发矛盾,对油藏条件和油井自身特点进行深入研究.结果表明,采用吞吐引效措施可增加受效井井数,通过控套压生产保证蒸汽突破井持续生产,改善了蒸汽驱先导试验生产效果,为蒸汽驱在杜229块工业化推广提供宝贵经验,同时也为同类油藏实施蒸汽驱提供了宝贵经验. 相似文献
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《新疆石油天然气》2017,(4)
杜229块油藏类型为超稠油油藏,区块从1998年投入开发,采用直井蒸汽吞吐开发方式开发,截至2007年6月,区块采出程度达到21.1%,可采储量采出程度达到90%,区块进入直井蒸汽吞吐开发末期,为实现持续稳产,探索薄互层油藏吞吐后期接替技术,2007年6月在杜229块开始实施蒸汽驱先导试验,经过几年的综合调控,先导试验获得成功,开发指标超过方案设计,开发效果达到国际领先水平。针对先导试验区取得的认识,该区块蒸汽驱扩大井组通过优化方案设计,采用注采井数比更合理的"回字形"井网代替"反九点"井网,为进一步提高汽驱效果奠定基础。杜229块蒸汽驱的成功实施,为同类油藏吞吐后期继续提高采收率,实现持续稳产开辟了一条新的路径,同时在其它同类型区块中也具有指导和借鉴意义。 相似文献
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杜229块超稠油蒸汽驱先导试验区实施过程暴露出蒸汽突破、局部方向难受效,油井井况变差,油层纵向动用不均、注汽质量低等开发矛盾,为此,从高温堵窜、调整参数、吞吐引效、大修更新、提高注汽干度等方面进行研究和试验.该研究缓解了蒸汽驱开发中的各种矛盾,使蒸汽驱先导试验区效果显著提高,打破了超稠油油藏不能采用蒸汽驱方式开发的认识,为蒸汽驱在杜229块工业化推广积累了宝贵经验. 相似文献
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杜229块超稠油油藏蒸汽吞吐开发采出程度达到22.5%,可采储量采出程度高达96.3%,转换开发方式势在必行。针对该油藏地质特点及开发现状,开展转蒸汽驱方式可行性研究。结果表明,该油藏适合蒸汽驱开发,可提高采收率25%。综合研究后确定,在该块中部选取4个井组开展蒸汽驱先导试验,并对井组注采参数进行优选。经过一段时间的试验,先导试验井组已进入蒸汽驱驱替阶段,瞬时油汽比达到0.16,井组年综合递减率下降10%,蒸汽驱见到初步效果。该研究对于区块下步转换开发方式及稳产起到了保障作用,对同类型油藏转蒸汽驱开发具有重要的指导意义。 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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