共查询到20条相似文献，搜索用时 93 毫秒
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欢西油田位于辽河盆地西部凹陷西斜坡南部,其稠油产量约占总产量的3/4,所占比重大。自1979年投入开发至今,已处于蒸汽吞吐开发后期。随着油田动用程度的提高,油田产能建规模逐年减小,已由“十五”期间的141口下降到2011年的25口,直井年产油由1475t下降到890t。近年来通过利用水平井技术,在稠油新区、老区、难采储量区块等区块共投产水平井71口,初期日产油982.7t/d,综合含水为53.1%,已累产油48.28×104t。通过应用水平井技术,欢西油田储量动用程度得到大幅提高、可采储量增加、经济效益显著,取得了较好的开发效果,为其它类似油藏提供了借鉴,具有广泛的科学指导意义。 相似文献
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王瑞 《胜利油田师范专科学校学报》2014,(1):13-15
渤南油田义123块油藏埋藏深,储层物性差,存在油井基本无自然产能、压裂后产量递减快、采出程度低的问题。为了实现致密油藏开发的突破,采用非常规多级压裂水平井技术对其进行开发。地质优化技术是压裂水平井成功的基础,其主要内容包括：水平段方向优化、纵向位置优化以及水平段长度优化。运用这一技术,义123块共优化设计水平井9口,目前已完钻投产6口,均取得了较好的开发效果,说明这种水平井地质优化技术能够实现致密浊积岩油藏的有效开发,为下一步在其他浊积岩区块的应用奠定了基础。 相似文献
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国内外油气田的开发实践表明,水平井压裂可以压穿多套储层,增加单井控制储量,提高单井产量。研究表明,水平井产能随裂缝条数、长度和导流能力增加而增加,且不同油藏状况下存在最优值。减少井筒根部和端部的裂缝间距可以增加水平井产能。在水平井压裂方案设计时,应根据储层地质情况和水平井压裂施工工艺,并充分考虑裂缝参数对水平井产能的影响来进行优化设计。 相似文献
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滨南采油厂王庄油田沙一段为典型的薄层稠油油藏，采用蒸汽吞吐开采虽有一定效果，但蒸汽吞吐过程中注汽压力大、产量不高、回采温度低。根据油藏性质特点，利用注活性水开发技术对开发该薄层稠油油藏的可行性方整进行了研究，并建立了该类油藏的数值模型。结果表明，活性水驱是提高原油采收率的有效方法，其表面活性荆可降低油水界面张力和残余油饱和度。在提高采收率的同时能降低产水量。加入表面活性荆的关键在于乳状液中的原油比例不能超过74％，否则会使乳状液遭到破坏或变型。对王庄油田2X15等4口井的模拟结果表明，当注入流体温度高于100℃时，采用活性立吞吐生产效果较好，4口井的阶段产油量为32858．3t，阶段采收率为4．73％。 相似文献
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低渗透油藏具有启动压力梯度高和介质变形的特点,在开发过程中存在渗流阻力增大、吸水能力差等问题。利用直井开发产量递减快,开发效果差,储量动用程度低。以仿水平井开发技术的新思路指导牛庄油田牛35-20区块低渗透油藏开发,大幅改善低渗透油藏的开发效果,为低渗透油藏有效开发提供借鉴。 相似文献
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方燃 《赤峰学院学报(自然科学版)》2013,(14):110-111
水平井技术是一种高效的提高油气采收率的方法,目前在所发现的各类油藏中均有应用水平井的报道.文章论述了低渗透油藏的基本特征,水平井开发油气藏的优势、特点以及影响油气藏开发的要素.利用水平井开发低渗透油藏的效益非常显着,应进行系统研究和大力推广,因此,水平井技术在开发油藏方面也具有十分乐观的前景. 相似文献
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崔苗苗 《河北能源职业技术学院学报》2018,(3)
小洼油田洼38块稠油油藏经过15年的开发,已进入高含水阶段,产量持续递减。为改善开发效果,建立一套以水平井为主的边、底水稠油油藏挖潜技术和方法,需要进行油层细分和对比。对比研究中,对以前对比的不合理之处进行了修正,同时总结了扇三角洲地层对比的模式和规律,对类似扇三角洲油藏的地层对比具有指导意义。 相似文献
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赵凯 《胜利油田师范专科学校学报》2012,(4):11-13
在乐安油田稠油油藏利用水平井技术规模化动用了薄层储量。随着热采吞吐周期的增加,周期产量明显递减。为合理开发,有效提高采收率,利用数值模拟技术,开展水平井井网蒸汽驱技术研究。结果表明,在合理的井网方式、适时的转驱条件、适合的注采参数下,区块采收率可提高13．02％。 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献