共查询到20条相似文献,搜索用时 140 毫秒
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《内蒙古石油化工》2015,(19)
国际石油公司对储量资产的买卖和评估主要依据两大评估标准和准则,即PRMS标准和SEC油气储量评估准则。这两个标准是国际通用的两个油气储量规范。其中,PRMS标准是石油工程师学会(SPE)批准发布的"石油资源管理系统(PRMS)"标准;SEC准则是美国证券交易委员会针对在美国上市的公司公布的一套上市储量评估工作规范。PRMS标准和SEC准则虽有很多相同之处,如使用条件;但不同之处也有很多方面,如储量的定义与分类、商业性和经济性的定义、未开发时间期限、非烃类产品的收入等。本文对比分析了这两个油气储量规范的异同,为储量评估工作的准确理解和应用提供比较和参考。 相似文献
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油气储量是油公司的核心资产,是评价公司价值和成长性的关键指标。SPE-PRMS(Society of Petroleum Engineers-Petroleum Resources Management System)体系是国际油公司中使用广泛的储量评估体系,本文对该体系下储量资源量的分级分类标准做了分析;介绍了该体系下储量\资源量评估的基本流程;最后简单介绍了技术可采储量评估的主要技术方法,以及各种方法在油田不同勘探开发阶段的适用性。 相似文献
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《中国石油和化工标准与质量》2019,(19):22-23
证实已开发储量(PD)是石油企业生产经营的重要指标,其中采用动态法评估部分是SEC储量体系的核心,准确评估和预测这部分储量对石油企业生产经营具有重要意义。本文在调研前人成果和深入研究SEC储量评估规范基础上,建立了动态法PD储量影响因素体系,回归了冀东油田动态法评估PD储量单元原油价格、操作成本、成本劈分比例和递减率等技术经济参数与PD储量变化规律,研究了评估单元划分对PD储量的影响,为今后油田SEC储量评估工作提供技术支持。 相似文献
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《中国石油和化工标准与质量》2016,(6)
2010年修订后的SEC准则明确提出了可以利用"可靠技术"突破传统的以井控程度和测试成果为基础的证实储量评估模式。目前中国应用较为成熟的可靠技术主要包括压力系统确定流体界面、矿场不稳定试井确定单井供油气范围等。本文着重对天然气SEC准则证实储量评估中可靠技术在这两方面的应用进行了阐述。 相似文献
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为研究沙漠地区不同养护方式下混凝土强度发展规律和不同强度等级混凝土抗裂性能,采用C35和C50混凝土在施工现场进行试验研究.通过圆环法试验探究混凝土强度增长与抗裂性能之间的关系,研究结果表明:(1)通过两种强度等级混凝土不同养护方式下强度增长与裂缝观测对比分析,不同养护方式对混凝土早期强度增长影响存在差异,保温保湿养护下混凝土早期强度增长最快.(2)在控制外界影响因素和混凝土外部养护条件的同时,高强度等级混凝土裂缝开裂时间和裂缝宽度均早于或大于低强度等级混凝土,混凝土强度等级越高越容易开裂.合理的养护方式对抑制和延缓混凝土裂缝的开展有重要影响,其中保温保湿养护下混凝土裂缝开裂较晚且发展缓慢.(3)裂缝的发展与混凝土早期强度增长密切相关,通过不同养护方式下混凝土强度增长与裂缝发展曲线分析,抗裂圆环裂缝的产生集中于混凝土强度增长最快的阶段,因此要重视实际工程中混凝土早期强度增长过程中的裂缝防控. 相似文献
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大数据应用已开始在智慧矿山建设中发挥重要作用,其必将推动矿山两化融合的快速发展,从而提高矿山企业的生产效率.随着智慧矿山建设的深入推进,海量数据的堆积已成为一种新生态,数据已成为矿山企业生产与管理中的生产资料和潜在的生产力要素;为了充分利用和发挥海量数据的商业价值和潜在生产力,从分析智慧矿山大数据现状出发,研究了矿山大... 相似文献
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Frank R. Ettensohn 《Fuel》1992,71(12):1487-1492
An abundance of organic matter, development of bottom anoxia in a stratified water column, and absence of major clastic dilution are the principal factors controlling the accumulation of organic-rich black shales. During the Devonian and Early Mississippian, such shales became abundant across much of east-central United States, apparently controlled by a unique coincidence of paleoclimatic, paleogeographic and tectonic factors. Like most major black-shale depositional episodes, Devonian-Mississippian deposits were formed during a time of global transgressive and greenhouse states. During this time, the east-central United States was located in the subtropical trade-wind belt where marine and terrestrial organic productivity would have been high and where surface waters would rarely have become cool enough to overturn and disrupt the water stratification necessary to generate bottom anoxia. Location in the trade-wind belt may also have enhanced upwelling which would have increased organic productivity and the likelihood of anoxia. Perhaps most importantly, however, black-shale deposition coincided with early phases of tectonism, when, because of rapid deformational loading in the orogen, subsidence in the adjacent Appalachian foreland basin far outstripped sedimentation. In the resulting deep-water conditions, water stratification and accompanying anoxia were soon established. Because most of the deformational load at this stage was subaqueous, there was no major source of clastic dilution, so that clastic starvation prevailed and largely organic-rich sediments accumulated. Thus hydrocarbon source beds of broad extent like the Devonian-Mississippian black shales, are rarely attributable to a single cause. They typically result from a complex interplay of factors unique to a given time and place. 相似文献
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Włodarski K Włodarski P Galus R Brodzikowska A 《International journal of molecular sciences》2010,11(9):3277-3287
HCl-demineralized murine lower incisors were implanted intramuscularly into syngeneic BALB/c mice to induce heterotopic osteogenesis. Implants were exposed at the early, preosteogenic stage (4), or at the later, osteogenic stage (12) to the Moloney sarcoma virus (MSV), which within 3-4 days results in a sarcoma. The yield of bone induction was determined by weight of dry bone mass following NaOH hydrolysis of soft tissues. To verify the effect of this sarcoma on orthotopic local femoral bone, the dry mass of the tumor-exposed femora was measured and compared with the weight of MSV-unexposed contralateral controls. MSV-sarcoma or cells involved with their spontaneous rejection have a stimulatory effect on the periosteal membrane of the tumor-adjacent femoral bones, increasing their dry mass on average by 18%. No stimulatory effect on heterotopic bone induction was observed when the MSV sarcoma grew during the early, preosteogenic stage (4 onward), but when the tooth matrix had been exposed to such tumor at the already bone-forming stage, (12 onward), the yield of bone induction was enhanced. Thus, it is postulated that lesions induced by MSV during the early, preosteogenic stage inhibit recruitment of osteoprogenitor cells or degrade Bone Morphogenetic Proteins (BMPs) released by matrix resorbing inflammatory cells, whereas when acting on already existing bone they have a stimulatory effect. 相似文献
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超临界流体快速膨胀法 (RESS)是近 1 0年发展起来的一项制备超细粒子的新技术 ,可生产粒径达到纳米至微米级且粒径和形态分布均匀的超细粒子。虽然理论研究目前还处于探索阶段 ,但该方法已经在很多领域展示了诱人的应用前景。就近年来超临界溶液快速膨胀技术的原理、典型的实验装置、工艺特点和应用研究成果进行了扼要的论述 相似文献
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Mrta Szesztay Zsuzsanna Lszl-Hedvig Ferenc Tüds Hans Heinrich Hrhold Joachim Klee 《大分子材料与工程》1988,162(1):149-162
Thermally polymerized samples of linear addition polymers of bisphenol-A-diglycidyl ether (DGEBA) and the following three different amines (A): benzylamine (BA), p-chloroaniline (PCA), and cyclohexylamine (CHA) were chromatographed by gelpermeation chromatography (GPC) using THF as eluent. The solvation effect of hydroxyl groups by THF has been taken into consideration when calibrating the system and interpreting the chromatograms. The comparison of the chromatograms suggests that the polymer with CHA is cyclized already in the range of small molecular masses (including dimers) and in an early stage of reaction. The comparison of average molecular masses of the samples as measured with independent methods—vapour pressure osmometry (VPO) and GPC—shows that the cyclization of the polymers with BA and PCA takes place to a lower extent, the latter polymer being less capable of cyclization. 相似文献