共查询到20条相似文献,搜索用时 78 毫秒
1.
以三角洲前缘低渗透砂岩储层为例,综合应用多学科理论和技术,建立了长期注水开发低渗透砂岩油藏的动态模型和剩余油仿真模型,研究了剩余油分布规律,并建立了高含水率开发阶段储层微观剩余油的三类分布模式.研究结果表明,油藏开发流体动力地质作用控制了不同含水期三角洲前缘低渗透砂岩油藏参数的演化,储层宏观物性参数及微观孔喉网络演化有利于驱油.油藏仿真模型是揭示长期注水开发油藏储层三维空间演化规律、预测和评价剩余油分布的有效技术手段. 相似文献
2.
3.
4.
5.
辽河油田水驱油藏具有断层发育、含油层系多、储层非均质性强、泥质含量高、油藏类型复杂等特点。在近10 a的开发实践中,结合各类油藏注水开发难点,研发了深度精细油藏描述、细分注水调整、低效无效水循环识别、二三结合精细挖潜、多元注采调控等12项核心开发技术,形成了一套适合中高渗透砂岩油藏、低渗透砂岩油藏、特殊岩性油藏特点的注水开发技术序列,水驱油藏年产油量由324×104t/a提高至360×104t/a,水驱采收率提高3.3个百分点。探索形成的改善老油田注水开发效果的技术对策,对同类型油藏注水开发具有一定的指导和借鉴意义。 相似文献
6.
7.
在水驱低渗透非均质砂岩油藏开发过程中,普遍存在水驱控制程度低、层间及层内矛盾十分突出、低渗透部位的剩余油难以开采等问题。以我国L油田D油藏为原型,利用数值模拟方法对其开发过程和过程中存在的主要问题进行了综合研究。研究表明,在低渗透非均质砂岩油藏开发中后期,及时调整井网并实施周期注水,不仅可提高开发效果,而且可以提高最终采收率。 相似文献
8.
低张力体系改善低渗透油藏水驱渗流特征实验 总被引:5,自引:1,他引:4
低渗透油藏注水井吸水能力低,注水压力逐渐升高,注水开发效果差。以国内低渗透注水开发油田(T油田)为例,研制了改善低渗透油藏注水开发效果的低张力体系。室内实验结果表明,低张力体系能够有效地降低残余油饱和度,增加油水两相共渗区间,改善低渗透油藏水驱渗流特征,从而改善低渗透油藏的注水开发效果。 相似文献
9.
提高薄互层低渗透砂岩油藏采收率的有效开发技术 总被引:4,自引:3,他引:1
王文环 《石油与天然气地质》2006,27(5):660-667,674
以胜利油田纯41块沙河街组沙四段薄互层低渗透油藏为例,从低渗透油田渗流机理出发,分析了低渗透油田由于存在井距偏大、井网与裂缝匹配不佳、没能适时转注、油藏保护意识薄弱等问题对开发效果的影响。应用渗流机理、地应力场研究成果,提出了低渗透砂岩油藏合理井距确定、井网形式优化、适时增压注水、加强油藏保护等配套开发技术。实施后日产油量、采油速度、日注水量明显提高,含水率、注入压力下降,预测采收率可提高523%。因此,该项配套技术对改善该类低渗透油藏开发效果、提高采收率具有广泛的使用意义。 相似文献
10.
在对包14块构造、沉积、储层等油藏地质特征分析研究的基础上,运用地应力场理论对低渗透油藏裂缝发育规律及其对注水开发的影响进行了研究,通过优化注水参数、改变注水方式、调整注采井网等措施,达到了改善低渗油藏注水开发效果的目的,为低渗透油藏注水开发提供了可借鉴的经验. 相似文献
11.
12.
13.
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
14.
《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
15.
16.
17.
18.
19.
20.
三江盆地绥滨坳陷白垩纪地层剥蚀厚度恢复 总被引:3,自引:1,他引:2
三江盆地绥滨坳陷地质历史时期曾经历了多期剥蚀作用,其中白垩纪至古近纪期间的剥蚀作用面积大、作用强,造成坳陷内地层大面积抬升剥蚀,地温降低,影响到油气的生成和排出.采用孔隙度法、镜质体反射率法和成熟度反演法分析绥滨坳陷南部和北部的剥蚀量,3种方法相互验证结果显示坳陷北部滨1井要比坳陷南部滨参1井经历了更大的剥蚀过程,相比之下,南部地区更有利于油气的形成和聚集. 相似文献