Skeletal Isomerization and Inter—molecular Hydrogen Transfer Reactions in Catalytic Cracking

Bimolecular hydrogen transfer and skeletal isomerization the important secondary reac-tions among catalytic cracking reactions,which affect product yield distribution and product quality,Catalyst properties and operating parameters have great impact on bimolecular hydrogen transfer and skeletal isomerization reactions .Bimolecular hydrogen transfer activity and skeletal isomrization activity of USY-containing catalysts are higher thn that of ZSM-5-containing catalyst.Coke deposition on the active sites of catalyst may suppress bimolecular hydrogen transfer activity and skeletal isomer-ization activity of catlys in different degrees.Short raction time causes a decrease of hydrogen trans-fer reaction,but and increase of skeletal isomerization reaction compared to cracking reaction in catalytic cracking process.     

荷兰中三叠统上壳灰岩阶大陆边缘千层饼型碳酸盐岩油藏描述

据pet．Geol与2005年第2期报道：荷兰东北部的科沃尔德气田产出的天然气，来自中三叠统上壳灰岩阶的碳酸盐岩地层。这是目前从该地层采出天然气唯一的气田，并在附近还确定了几个远景带。荷兰东北部相带和储层性质的分布说明，沉积作用发生于坡度极缓的、风暴占主导地位的大陆边缘斜坡上。斜坡的近源与远源部分的以泥质和泥灰质为主的岩相类型，逐渐与似浅滩鲕粒状灰岩呈指状穿插。白云化的球形鲕粒状灰岩是物性最好（渗透率高达60mD）的储集层，系高能后滨沉积。以灰岩为主的浅滩相和泥质较丰富的前滨相中的储层质量有所降低。中用四级沉积旋回，描述并预测了储层质量（渗透率）和数量（有效厚度与总厚度的比值）的系统及垂向变化。     

福山凹陷流沙港组储层特征及物性影响因素

开展福山凹陷流沙港组储层特征研究对该区油气的有效勘探开发具有重要意义。运用岩心、薄片、物性测试等资料,分析流沙港组储层的基本特征和物性影响因素。流沙港组储层岩石类型主要为长石岩屑和岩屑砂岩,储集空间类型主要为粒间溶孔和粒内溶孔。物性以低-中孔、低-中渗为主,水下分流河道储层物性最好。储层物性主要受沉积和成岩作用控制。     

Deposition of cerium contained conversion films on LC4 alloy with square wave pulse method

Cerium contained conversion films were deposited on LC4 aluminum alloy using square wave pulse (SWP) in aCeCl3 solution with KMnO4 as the oxidant. Energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM) were adopted to study the composition and the morphology of the film. It is found that the film is composed of Al, Zn, Cu,and small amount of cerium. The polarization curves of the specimens treated with SWP technique measured in 3.5% (mass fraction) NaCl solution reveal that the film thus formed inhibits both the anodic and cathodic process of the corrosion of the specimen. The immersion tests of treated specimens in 3.5% NaCl solution indicate that the corrosion resistance of the SWP treated specimen is better than that of the untreated and is equivalent to or even better than that of the traditionally electro-chemically treated specimens.     

塔中地区顺托果勒低隆起志留系柯坪塔格组下段致密砂岩储层控制因素分析

塔中地区顺托果勒低隆起志留系柯坪塔格组下段储层为致密砂岩储层,应用镜下薄片、孔渗分析、X衍射及扫描电镜等分析化验资料分析了该区致密砂岩储层的基本特征。在区域构造特征、断裂发育特征、沉积及成岩作用研究的基础上,探讨了该套储层致密化成因,并分析了致密砂岩储层中"甜点"发育的控制因素。研究表明,柯坪塔格组下段致密砂岩储层为一套滨岸砂坝砂体,岩石类型为细粒岩屑砂岩、粉砂岩;结构成熟度高,成份成熟度低。柯坪塔格组下段砂岩储层致密化受控于沉积作用和成岩作用,高频沉积旋回、储层非均质性、碎屑组成、岩石粒度等沉积作用控制了储层致密化的基础条件;压实作用、胶结作用等成岩作用进一步加速了储层致密化的进程。该套致密砂岩储层中"甜点"的发育受多重因素的控制,其中,沉积相决定了"甜点"发育的物质基础;储层中超压的存在延缓储层致密化进程;裂缝和深部流体溶蚀为改善"甜点"的储渗性能起到了一定的作用。     

Thermal effects on structure and photoluminescence properties of diamond-like carbon films prepared by pulsed laser deposition

With their unique properties such as high hardness ,lowfriction,chemical inertness and optical transparency,Diamond-like carbon(DLC) fil ms are usedina wide ar-ea of industrial applications ,as a protective coating insuch areas as optical windows ,magneti…     

Deposition of GaN thin film on ZnO/Si by DIBD method

The GaNis a semiconductor material witha widefor-bidden band(Eg=3.36eV).It has many unique advan-tages such as high electron drift velocity,small dielectricconstant,goodthermal conduction et al.It is a favorablematerial for making electric devices with hi…     

低渗-致密气藏有效储层发育主控因素分析

通过显微镜下碎屑矿物的定量统计、阴极发光等方法确定了研究区的物源;结合岩心观察、薄片鉴定、物性分析及压汞资料,分析了砂岩类型、胶结物特征与储层物性的关系。研究表明：有效储层受沉积作用和成岩作用共同控制。沉积物源决定了储层岩石类型和骨架矿物特征,是有效储层形成的物质基础。水动力条件决定有效砂体的空间分布和叠置样式,高能条件下心滩或复合河道沉积中冲刷切割型叠置型的砂体是有效储层发育的主要部位。压实作用和胶结作用使砂岩致密化,中-粗粒石英砂岩中保存部分原生孔隙,较纯的石英砂岩易发生石英次生加大,降低了砂岩的孔隙度;自生黏土矿物可能会降低储层渗透率,但并不绝对,如凝灰质、伊利石或蒙脱石收缩形成的收缩缝能够改善储层的渗透性;溶蚀作用有效的改善储层物性,为建设性成岩作用。     

东营凹陷北带构造特征及其对沉积作用的控制

东营凹陷北部陡坡带的主干边界断层为铲式断层．沿断层走向不同地段的剖面形态也有明显的差异,有多个不同尺度的相对陡倾、呈内凹形态的断层面瀑布和相对缓倾、呈外凸形态的断层面缓坡。在主边界断层的断层面瀑布区,沙三下亚段时期发育近岸水下扇和扇三角洲,而在断层面缓坡处则发育湖相泥岩。     

莫西庄油田低渗透储层特征与成因

综合利用岩心观察、薄片鉴定、图像分析、扫描电镜观察、压汞与岩石物性测试等多种技术方法,对准噶尔盆地莫西庄油田侏罗系三工河组低渗透储层特征及其成因进行了研究。结果表明,储层物性总体较差,储集空间以原生粒间孔隙和次生溶蚀孔隙组合为主,孔隙结构类型属中孔-细喉道型;沉积因素对低渗透储层的形成起决定性作用,压实作用强是低渗透储层形成的主要因素;胶结作用损失的原生孔隙度一般小于５％,对储层低渗成因起有限的强化作用;溶蚀作用对储层没能发挥明显的改造作用,是低渗储层形成的一个重要原因。