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长石溶解     
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  feldspar solution
     By a study of the three secondary porosity developed zones in Songliao ba- sin and the in-house experiments on feldspar solution,some concluions are br- ought forward:the oil-gas source rock (dark shale rock) adjacent to the reser- voir is also the acid source layer;
     本文运用对长石溶解试验研究成果,结合松辽盆地富长石砂岩中存在3个次生孔隙发育带的实例,研究并提出了与储集层相邻的油气源岩(暗色泥岩)也是酸源层的观点;
短句来源
  plagioclase dissolution
     Mass balance of plagioclase dissolution and impact on reservoir quality.
     长石溶解质量平衡对储集层质量的影响
短句来源
     This paper is to investigate the impacts of plagioclase dissolution on reservoir quality, and to assess the quantitative relationships between plagioclase dissolution and porosity in sandstones by discussing the mass balance, image analysis and quantitative statistics of cast thin sections.
     从讨论长石溶解的质量平衡问题入手,结合铸体薄片的统计数据和图像分析,全面探讨了长石溶蚀作用对储集层质量的影响,以及长石溶解与砂岩孔隙发育的定量关系。
短句来源
  dissolution of feldspar
     At a burial depth of 2 400-2 600 m, δ13C and δ18O in the carbonate (Ⅱ) formed in the sulfate reduction zone are in the range -7‰ to - 10‰ and -8‰ to - 10%%%%, respectively, where the dissolution of feldspar constitutes the 1st secondary pore zone.
     埋深2 400-2 600 m,硫酸盐还原带形成的碳酸盐(Ⅱ)δ13C为-7‰--10‰,δ18O为 -8‰--10‰,长石溶解形成第一次生孔隙带。
短句来源
     Secondary pores result mainly from the dissolution of feldspar and rocd fragments, and the dissolution of plagioclase occur in early diagenesis and of K -feldspars in late diagenesis.
     次生孔隙主要是长石、岩屑溶解的结果。 斜长石溶解开始开成岩早期,钾长石溶解一般发生在成岩晚期。
短句来源
     The dissolution of feldspar and precipitation of gaolinite,stable isotope and distinct authigenic mineral are important remarks to recognise the interaction of the meteoric water-sandstone.
     长石溶解与高岭石沉淀、稳定同位素和特征自生矿物是判断大气水-砂岩相互作用的主要标志。
短句来源
     In this paper, based on the mechanism of dissolution of feldspar and the distribution of various aqueous ions, the effects of pH on the solubility of three endmembers of feldspar and Kaolinite in fluid were studied from the angle of thermodynamic.
     本文从长石溶解反应的机理及各离子形态在溶液中分布的热力学角度出发 ,论述了pH值对三个长石端员及高岭石在流体中溶解度的影响。
短句来源
  “长石溶解”译为未确定词的双语例句
     This paper (1) overviews the development of geochemical reaction modeling, (2) explains the theory and equations employed by Geomodel 1.0, (3) briefly presents the flow of the program, (4) displays the interface and functions of Geomodel 1.0, (5) shows two reaction examples and does some analysis, and (4) summarizes the features and shortcomings of Geomodel 1.0.
     (4)介绍Geomodel 1.0的界面及功能; (5)展示白云母和钾长石溶解实例,并对钾长石的溶解模拟结果进行分析;
短句来源
     - clastic illite conversion, spherosiderite, an-kerite, mechanical compaction , authigenic quartz , smectite , smectite-illite , smectite-chlorite, feldspar solubilization, kadinite, authigenic illite, authigenic feldspar, feldspar albitization, chlorite, heavy spar, laumontite ironetic calcite and laumentite solubilization, etc.
     砂岩成岩事件计有:碎屑伊利石转化、球粒状菱铁矿、铁白云石、机械压实、自生石英、蒙皂石、蒙皂石—伊利石、蒙皂石—绿泥石、长石溶解、高岭石、自生伊利石、自生长石、长石钠长石化、绿泥石、重晶石、浊沸石、无铁方解石和浊沸石溶解等。
短句来源
     The dissolution of k-feldsppars and lomonites provides the condition for formation of porosity and permeability of sandstone.
     钾长石溶解和浊沸石溶解大大丰富了深层砂岩的孔、渗条件。
短句来源
     In this paper, the performance of sinter of nepheline and its mixture with puartz is studied and the soloveability of puartz in nepheline and feldspar is contrasted.
     本文主要对霞石以及霞石与石英混合料烧结性能进行了研究。 并采用 XRD手段 ,对霞石与长石溶解石英能力进行比较。
短句来源
     Although organic acids can enhance substantially the solubility of Al, organic anion aluminum complexes prefer oil to water. So the concentrations of Al in the oilfield waters are low.
     4)长石溶解使溶液中Al的浓度较高,但由于铝—羧酸络合物的亲油性比亲水性强,故有一部分Al被分配到油相中,这也是目前大多数油田水中Al浓度偏低的主要原因。
短句来源
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  feldspar dissolution
Textural evidence for quartz and feldspar dissolution as a mechanism of formation for Maggs Pipe, Zaaiplaats tin mine, South Afr
      
The pipe formation process initiates with the dissolution of granite quartz and subsequently extends to feldspar dissolution, particularly in the central portion of Maggs Pipe.
      
Preliminary observations on several other pipes at Zaaiplaats indicate that quartz and feldspar dissolution was a major procress in forming the pipe systems.
      
An excess of Na relative to Cl in fresher groundwater suggests that feldspar dissolution has occurred, however, water-rock interaction is limited.
      
By comparison with experimental studies of feldspar dissolution, we interpret that hydrogeochemical recovery was facilitated by groundwater interaction and clay mineralization, which could have been coupled with fracture sealing.
      
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  plagioclase dissolution
All of the above features indicate that plagioclase dissolution alone cannot explain the chemical composition of Cape Cod groundwater.
      
Groundwater from Cape Cod lacks a positive Eu anomaly, indicating that plagioclase dissolution does not control its REY budget.
      
Plagioclase dissolution rates are a function of Ca/Na ratios, but most plagioclase rates are skewed toward the albite end.
      
  dissolution of feldspar
The sandstone paragenesis includes siderite cement (early stage), quartz overgrowths (intermediate stage), dissolution of feldspar and carbonates, followed by minor Fe calcite, pore-filling kaolinite and sub-poikilotopic Ca ankerite (late stage).
      
The composition of cuttings from several representative wells producing different water types shows that the hydrothermal alteration of the aquifer rocks consists mainly of kaolinization of chlorite and dissolution of feldspar.
      
However, the dissolution of feldspar in the hardwood subcatchments could account for only 26%-37% of the observed net Ca output.
      


The sandbodies of offshore turbidite fan in the Zhanhua Depression with aburied depth of 3200-3640m are located in a sealed environment around byargillic source rocks. The reservoir spaces are of secondary origin, and porosityis relatively high and stable within the extent of studied depth. The reasonsthat porosity does not vary with the buried depth are that: 1. The existanceof carbonate cements and the replacing minerals in the early and middle stagesof diagenesis provided large amounts of spaces for the formation...

The sandbodies of offshore turbidite fan in the Zhanhua Depression with aburied depth of 3200-3640m are located in a sealed environment around byargillic source rocks. The reservoir spaces are of secondary origin, and porosityis relatively high and stable within the extent of studied depth. The reasonsthat porosity does not vary with the buried depth are that: 1. The existanceof carbonate cements and the replacing minerals in the early and middle stagesof diagenesis provided large amounts of spaces for the formation of the secondarypores; 2. A nearly closed sedimentary system prepared abundant acidic watersolution; 3. The minerals themselves produced the condition of physical-chemicalsolution. At about the buried depth of 3211m, plagioclase dissolution reduceddue to albitization while the dissolving pores of potash feldspar increased re-markably. This relationship between growth and extinction constituted the maincause of the relative stability of the porosity. The microfacies of braided channelsin the offshore turbidite fans are the major targets for hydrocarbon explorationowing to sandstones with great thickness, lower content of mud and higherisotropy.

研究区近岸浊积扇储集空间为次生成因,不随深度的加大而变差,在深层仍保持良好的储集空间。这种特殊性决定于:(1)早、中期碳酸盐胶结物及尔后的交代矿物为次生孔隙的形成提供潜在空间;(2)近封闭的沉积体系提供了极丰富的水溶液;(3)斜长石、钾长石溶解孔隙的消长交替。近岸浊积扇的辫状沟道相为油气勘探的主要对象。

Based on the comprehensive study of core analyses of about 300 wells, 168 thin sections, cast thin sections, X-ray diffraction of clay mineral in sandstones, SUM (Scanning electron microscope) and cathodic emission anal ysis, this paper show that Fuyu and Yangdachengzi sandstone reservoirs have undergone medium diagenetic stage, with maximum buried depth of 1000-2300m, vitrinite reflectance ( Po ) 0.5-38%,Estimating diagenetic temperature is 90-120. Diagenetic events of sandstones are.- clastic illite...

Based on the comprehensive study of core analyses of about 300 wells, 168 thin sections, cast thin sections, X-ray diffraction of clay mineral in sandstones, SUM (Scanning electron microscope) and cathodic emission anal ysis, this paper show that Fuyu and Yangdachengzi sandstone reservoirs have undergone medium diagenetic stage, with maximum buried depth of 1000-2300m, vitrinite reflectance ( Po ) 0.5-38%,Estimating diagenetic temperature is 90-120. Diagenetic events of sandstones are.- clastic illite conversion, spherosiderite, an-kerite, mechanical compaction , authigenic quartz , smectite , smectite-illite , smectite-chlorite, feldspar solubilization, kadinite, authigenic illite, authigenic feldspar, feldspar albitization, chlorite, heavy spar, laumontite ironetic calcite and laumentite solubilization, etc. Diagenetic process of sandstones mentioned above determined the quality of reservoirs to be medium

本文根据近300口井岩心分析,13口井168块薄片、铸体薄片、砂岩中粘土矿物X射线衍射、扫描电镜及阴极发光等分析,经综合研究认为,扶余、杨大城子油层砂岩主要经历了中成央阶段,其最大埋藏深度为1000~2300m,相应镜质体反射率力0.5~1.38%,估计成岩温度为90~120℃。砂岩成岩事件计有:碎屑伊利石转化、球粒状菱铁矿、铁白云石、机械压实、自生石英、蒙皂石、蒙皂石—伊利石、蒙皂石—绿泥石、长石溶解、高岭石、自生伊利石、自生长石、长石钠长石化、绿泥石、重晶石、浊沸石、无铁方解石和浊沸石溶解等。由于上述砂岩的成岩历史,决定了储集层质量具中等孔隙度(10~20%)与低渗透性(0.01×10~3~50×10~(-3)μm~2)的特点。次生孔隙发育段可改善储集层性质。

The secondary porosity of middle-deep sandstone in northern Songliao Basin was formed mainly by the dissolution of unstable framework components (feldspars, rock fragments) According to pore texture, the secondary porosity is distinguished to be of eight types.It is known that the secondary porosity is produced by the dissolution of plagioclases, which may be dissolved commonly at shallow burial depth and the process is concentrated and intensified at 1,000-1,500 m depth, but k-feldspar is dissolved usually...

The secondary porosity of middle-deep sandstone in northern Songliao Basin was formed mainly by the dissolution of unstable framework components (feldspars, rock fragments) According to pore texture, the secondary porosity is distinguished to be of eight types.It is known that the secondary porosity is produced by the dissolution of plagioclases, which may be dissolved commonly at shallow burial depth and the process is concentrated and intensified at 1,000-1,500 m depth, but k-feldspar is dissolved usually at a greater burial depth. The dissolution of k-feldsppars and lomonites provides the condition for formation of porosity and permeability of sandstone.The formation of secondary porosity depends not only on acid medium, but also on meta-alkaline environment which may be more significant.

松辽盆地北部中—深层砂岩的次生孔隙主要是由不稳定的骨架颗粒组分溶解而成,按结构系列,次生孔隙可划分为八种类型。斜长石的溶解是造成次生孔隙的主要原因,它可以在埋藏浅处开始溶解,在1000—1500m 深处溶解变得集中和剧烈。钾长石的溶解一般发生在埋藏较深处。钾长石溶解和浊沸石溶解大大丰富了深层砂岩的孔、渗条件。次生孔隙的形成不仅取决于酸性介质环境,而偏碱性的孔隙溶液对长石的溶解亦具有重要意义。

 
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