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随钻地震技术的理论及工程应用 总被引:10,自引:0,他引:10
随钻地震是地震技术和钻井技术的结合.随钻地震的主要功能有:指示正钻钻头的工作位置;识别地层、岩性、断层、裂缝带;可以预测钻头前方的地层和地层孔隙异常压力等.它的主要用途为:在探井中可以及时发现油气层,提高探井成功率;为井身轨迹提供地质导向依据,使井身轨迹准确“入窗上靶”.随钻地震获取的信息是油藏未被污染的原始参数,这对制定保护油气层和油藏描述等工作具有重要价值.随钻地震不需要专门的井下仪器,只需在钻杆的顶部安装传感器和在井场附近的地表埋置常规检波器,就可进行随钻测量和现场实时处理,在井场就可以得到钻井决策的地震资料.随钻地震技术可以降低钻井成本,提高勘探开发综合经济效益. 相似文献
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随钻地震是地震勘探技术和钻井技术的结合,随钻地震技术是利用钻井期间旋转钻头的振动作为井下震源,在钻杆的枯赔,井附近的地表埋置检测器,分别接收经钻杆,地层传输的钻头振动的信号。通过互相关和反褶积等数据处理方法,得到有关井下的地层信息,预测钻前地层速度和反射界面的深度等地层参数,随钻地震技术可以降低钻井成本,提高勘探开发综合经济效益。 相似文献
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随着石油工业的不断发展,大斜度井、分支井和水平井等钻井技术被用于开发规模更小、油层更薄、物性更差、非均质性强的油藏,由于随钻测井(LWD)自身的特点,使其更多地被用于这些油藏的评价和地质导向钻井工作中.在介绍随钻测井技术特点、总结随钻测井解释在地层评价、地质导向方面应用效果的基础上,论述了如何利用井下实际地质特征确定、控制井眼轨迹与油藏空间关系,分析了随钻测井解释评价技术目前存在的难点问题,提出了今后研究方向. 相似文献
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随钻地质导向技术实现了以井下实际地质特征来确定和控制井眼轨迹,达到了提高有效储层钻遇率的目的,对于高效开发复杂气藏具有重要意义。为此,简述了地震、测井联合反演和三维可视化建模在地质导向储层预测中的作用,然后结合四川盆地中部磨溪气田MM1水平井等多口井的产层导向钻进情况,总结出采用随钻测井(LWD)资料确定中靶点和钻头在目的层的位置,以及井眼轨迹、地层岩性剖面和随钻测井曲线综合成图与调整井眼轨迹等方法,并以此来指导磨溪气田三叠系嘉陵江组白云岩储层的地质导向钻井施工,明显提高了水平井目的层的钻遇率和地质导向钻井的成功率,效果良好,值得推广应用。 相似文献
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《石油物探》2016,(6)
根据采集方式的不同,随钻地震技术可分为钻头随钻地震和随钻VSP。钻头随钻地震采用钻头破岩时的振动作为震源,能量较弱,信噪比低,在深井、高斜度井、水平井、大位移井、使用PDC钻头、钻遇软岩层等情况下震源信号不佳,近年来应用逐渐减少。而在钻头上方安装水力脉冲冲击器使井底产生脉冲冲击和瞬时负压的方式,可增加震源信号的强度,提高随钻地震信号的信噪比。随钻VSP采用海面气枪震源或地面可控震源、炸药激发,井下地震检波器接收,泥浆脉冲遥测系统实时传输校验炮、初至波数据,实时更新随钻速度、压力模型,提高成像精度。与常规电缆VSP相比,随钻VSP在钻井过程的自然间隙,例如连接钻杆的过程中进行采集,不干扰钻井过程,避免电缆VSP在水平井、高斜度井等的操作风险,降低钻井成本。目前,随钻VSP技术日趋成熟,可实现钻头前准确的速度预测、地层压力预测和精细构造成像,从而预见性地指导钻井过程。针对新探区、钻前地层压力预测风险较大的地区、非常规油气藏、常规电缆VSP部署风险大的地区、复杂油气藏等在高精度构造成像、准确地层压力预测等方面的需求,开展随钻VSP技术应用研究具有现实意义,可降低钻井风险和成本,提高油气勘探开发效益。 相似文献
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针对螺杆钻具组合在超薄互层油层水平井钻井过程中存在的钻进摩阻大、随钻测井精度低等问题,开展了旋转导向钻井技术的研究及应用,通过在葵东1块薄互层油藏水平井钻井中的应用,提高了钻井速度,缩短了钻井周期,减少了井下复杂情况的发生,提高了钻井工程质量,降低了钻井成本,在薄互层油藏水平井轨迹控制具有广泛的应用前景. 相似文献
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Aibassov Erkin Zhakenovlch Kenzhaliev Bagdaulet Kenzhalievich Berkinbaeva Ainura Chukmanova Marzhan Iskhakova Renata AhoacoB E.K. Chukmanova Marzhan 《化学与化工:英文版》2014,(2):195-198
It was discovered a new approach modification Bart, Beschamp, Mayer, Rosenmund, Scheller, Sherlyn-Braz reactions with of arsine, stibine and bismuthine in organometallic chemistry. The authors have proposed a new mechanism for possible reactions. 相似文献
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Aibassov Erkin Zhakenovich Yemelyanova Valentina Stepanovna Shakieva Tatyana Vladimirovna TussupbaevNessipbay Kuandykovich Blagikh Evgeniy Vladimirovich 《化学与化工:英文版》2014,(4):428-432
It is discovered a new three-, four-component Petasis, Passerini, Hantzsch, Kabachnic-Fields, Ugi reactions with of arsine, stibine and bismuthine in organometallic chemistry. Modifications were replaced to a nitrogen atom of classical reactions of atoms of phosphorus, arsenic, antimony and bismuth. It has been proposed a new mechanism for possible reactions. 相似文献
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水淹枯竭气藏型地下储气库盘库方法 总被引:3,自引:1,他引:2
地下储气库多周期运行盘库,是研究气库运行规律、分析漏失、进一步提高气库运行效率和降低气库运行成本的关键环节。已建立的未水淹气藏型地下储气库盘库数学模型却并不适用于水淹枯竭气藏型地下储气库,评价结果明显高于实际注采气量。为此,通过深入分析水淹枯竭气藏型地下储气库气驱排水扩容机理、多周期注采运行过程中气水两相宏观与微观运动规律及可能的分布状态,创新性提出了可动用库存量的概念,以注采气量与视地层压力在一个注采周期内满足定容压升降方程为评价准则,建立了水淹枯竭气藏型地下储气库盘库模型。实例验证结果表明,该模型计算的结果与实际吻合,可用于水淹枯竭气藏型地下储气库多周期运行盘库计算和分析。为储气库运行、管理及调整提供了依据。 相似文献
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Disposal of solid wastes is a stinging and widespread problem in both urban and rural areas in many developed and developing countries. Municipal solid waste (MSW) collection and disposal is one of the major problems of urban environment in most countries worldwide today. MSW management solutions must be financially sustainable, technically feasible, socially, legally acceptable and environmentally friendly. Solid waste management issue is the biggest challenge to the authorities of both small and large cities’.Valorization of food organic waste is one of the important current research areas. The conventional landfill, incineration, composting, and ways of handeling solid wastes are common as mature technologies for waste disposal. Traditionally, the most commonly used technologies for the treatment and valorization of the organic fraction of MSW are composting and anaerobic digestion (AD). The generation of organic solid waste (OSW); worldwide; is dramatically increasing each year. Most of the OSW’s are composed of agricultural waste, household food waste, human and animal wastes, etc. They are normally handled as animal feed, incinerated or disposed to landfill sites. OAW’s are comprised of materials rich in proteins, minerals, and sugars that could be used in other processes as substrates or raw materials. 相似文献
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Maurice Kamen-Kaye 《Journal of Petroleum Geology》1978,1(1):79-101
Permian to Tertiary faunas along the eastern margin of Africa, and on Madagascar, are presented, described, and discussed. Presentation of the faunas is made in four charts: Permo-Triassic, Jurassic, Cretaceous, and Tertiary. A correlation chart provides tentative time-rock units. Paleogeography northeast and east of Africa is derived from the writer's analysis of marine invertebrate fauna, and is delineated in sketches for Late Permian, Jurassic, and Cretaceous times. Limitations exist on the conclusions that can be drawn from fauna alone. Pelagic waters can be indicated, but their extent cannot be specified, and lack of diversification in some of the pelagic genera results in unavoidable ambiguities of interpretation. Nothing in the faunal evidence so far available, however, disproves unequivocally the existence of an ancestral Indian Ocean from Late Permian onward. Even if such an ancestral ocean did not exist the pattern of pelagic waters that can be inferred from marine invertebrate fauna constitutes an impediment to models that suture Australia or India to Africa or Madagascar. Peninsular India, on readings of its own geology across the foreland-orogen boundary, may have occupied its present position through the whole of geologic time. 相似文献
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泌阳凹陷陡坡带砂砾岩体预测 总被引:18,自引:1,他引:17
在对泌阳凹陷陡坡带砂砾岩体空间展布预测中,以层序地层学研究为基础,依据古地貌沟扇对应理论,利用地震属性分析技术和地震反演技术,寻找砂砾岩扇体并确定其分布边界.预测结果,在陡坡带边界断层附近发现了新的砂砾岩扇体,在深凹区过渡带发现了浊积砂体,均为有利的油气聚集区,经钻探获得了良好效果,对陡坡带砂砾岩体的勘探起到 较好的指导作用.图3参10 相似文献
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