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八年了,终于来了强有力的跟随者 精选

已有 6975 次阅读 2012-10-25 16:45 |系统分类:海外观察| EOR, 纳微米球, 逐级深部调驱

       纳微米球逐级深部调驱技术是EOR(Enhanced Oil Recovery)领域中国人的发明,在2004年12月2日,在中石化的大力支持下在胜利油田做了第一个现场试验,证明是一种有效的改善油藏非均质性,解决层内和层间矛盾的合理方式,可以有效的提高原油产量和采收率,提高石油开采的经济效益。本课题组在2005年现场实验结束后申请了三项中国发明专利。
       记得当年中国科学院网站曾经在首页头版头条做了报道。
       在此后,尽管国内也有众多模仿者和类似的产品,但都由于对该类产品的工作原理理解不是很正确(当时我们在专利里描述也不是很完善),在市场上一直没有出现技术指标接近的类似产品,所以,一直没有在意。
       但是,今天,有朋友转来一条消息,在俄罗斯,人家实现了类似产品的工业化,并在今年年初同时注入了87口井。
       尽管在人家的技术说明里没有产品的照片和详细说明,不能确认产品是否完全一致,但是,这条消息几乎就像我每次在国内外讲课的录音整理稿。
       羡慕对技术尊重的俄罗斯社会,羡慕俄罗斯科学家,并深深的感到遗憾,到现在,我们还是每次几口井甚至只有一口井的在做,而不是一次87口井,八年来,我一直努力推广这个在未来几十年里可能成为水驱油田EOR最重要的技术,但是,严重官僚体制内国家利益被割据和瓜分的情况下,技术发展有多么难,一般人无法想象。
       感谢俄罗斯公司给一个面子,证明我们的发明也会有后来人,让我们引领世界一回,而且引领了八年。
 
Tatneft: A New Oil Recovery Enhancement Technology Monday, October 15th, 2012

A technology of increasing crude oil recovery from the reservoir by injecting microgel polymer systems with surfactants (MGS-KPS technology) is being successfully applied at OAO TATNEFT. This engineering development of TatNIPIneft experts (part of the Company) was awarded the Grand Prix of the XIX-th International Exhibition “Oil and Gas. Petrochemistry – 2012″.

The MGS-KPS technology is designed to regulate the process of oil displacement and increasing crude oil recovery in heterogeneous and multilayered reservoirs, and can be applied both at an early stage of the reservoir flooding and in long-term flooding conditions. The technological effect is achieved through reducing the permeability of water-bearing intervals and increasing the efficiency of crude oil displacement from less permeable zones of the reservoir by pumping gelling polymer compositions of various types.

The technology provides for application of polyacrylamide based gel-forming compositions obtained through using gel (cross-linking) inductors of two types. Depending on the geological and technical conditions of the application site different modalities are defined: injection of a mobile microgel system or sequential injection of a gel-forming slug and a microgel composition. The inclusion of surface-active agents (surfactants) into the mobile microgel system simultaneously increases the formation coverage ratio and crude oil displacement.

The MGS-KPS technology can be implemented in all seasons, which is provided by the lack of restrictions on the mineralization of the water used to obtain compositions as well as the use of surfactants with a low pour point. Compared with other polymer solutions the MGS-CPS compositions are characterized by low polymer and cross linking agent content, but they provide for a high residual resistance factor. This helps to reduce treatment costs without a loss of the process efficiency. A possibility of choosing from a variety of compositions and methods of injection depending on the conditions of the application site also contributes to the economic and technological efficiency.

This technology has been introduced at the oil fields of OAO TATNEFT since January 2012. Injection under the MGS-KPS technology was performed in 87 injection wells during eight months of 2012 and the technology is in great demand of all the NGDUs of OAO TATNEFT. The forecast duration of the technological efficiency is 2 years.



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