台西南盆地中新生界石油地质与油气勘探前景

台西南盆地是南海北部大陆架东区边缘盆地链上的中、新生代含油气盆地之一,与其西边的珠江口盆地相邻,处在中国近海陆架盆地天然气富集区带的有利位置,具有良好油气资源潜力和勘探前景。该盆地由北部凹陷、南部凹陷及中央隆起带等3个构造单元所组成。迄今为止,其勘探及研究程度较低,仅在中央隆起带中部勘探中发现了CFC、CFS及CGF等渐新统砂岩及中生界白垩系裂缝性储集层之含油气构造,且探井及研究亦主要集中于该区,其他区域则勘探及研究均十分薄弱。由于中央隆起带处在盆地中部区域上有利油气运聚的低势区,具有良好的油气运聚成藏条件,故迄今勘探发现的商业性油气均集中于该带,因此处于两凹之隆之中央隆起带应是该区最佳的油气富集区带及远景区,而加大勘探力度、全面解剖中央隆起带、深入研究其油气富集规律,则应是台西南盆地尽快获得油气勘探突破之关键。     

管线中钴垢形成原因分析及化学清洗

详细分析垢层形成的原因和清除方法的选择以及酸洗除垢的全过程,一方面使制约装置正常运行负荷的问题得到较好的解决,另一方面也有效地防止了管线、设备的腐蚀、堵塞直至出现超温、超压而发生的火灾爆炸事故。     

再论生物礁与大油气田的关系

对国内外生物礁油气勘探状况进行了评述,并对有关生物礁勘探技术的方法也作了简要讨论.中国西部克拉通盆地寻找大油田的情况表明,塔里木盆地塔中地区奥陶系是生物礁型油田的主要勘探方向,寒武系的盐下及白云岩储层中的油气值得关注;鄂尔多斯盆地奥陶系生物礁天然气勘探尚须重视,特别要注意基底断裂与生物礁分布的相互关系以及礁体的封盖条件.生物礁—白云岩(储集层)—膏盐(盖层)的模式是寻找生物礁油气藏的关键,我国应重视对生物礁油气藏的勘探,这是中国西部地区下古生界(及震旦系)碳酸盐岩寻找大油气田的最好的靶区.     

Processing and properties of CVD diamond for thermal management

One of the many remarkable properties of diamond is its thermal conductivity, about five times that of copper and the highest of all known materials. The high thermal conductivity in combination with the relative ease of diamond film growth by chemical vapor deposition process makes the material suitable for many applications such as thermal management in high power electronic circuits. For thermal managements applications, various processing steps are needed for the diamond films, such as the metallization for reliable solder bonding, metallurgical processes for planarizing of the faceted growth surface and removal of fine-grained diamond regions with poor thermal conductivity. This paper will review the properties and processing of diamond films for thermal management applications.     

微波单片集成电路的成品率优化

采用建立管芯等效电路模型、灵敏度分析以及统计勘探法对微波单片集成电路进行成品率优化，并编制了软件，加入到ＧａＡｓＩＣＣＡＤ系统中。应用该软件对Ｘ波段低噪声ＭＭＩＣ、超宽带ＭＭＩＣ放大器进行了设计，成品率有较大的提高，电路性能有所改善。     

Film morphology and reaction rate for the CVD of tungsten by the WF6—SiH4 reaction

Journal of Electronic Materials - Low pressure chemical vapor deposition (LPCVD) of tungsten (W) by SiH4 reduction of WF6 on Si(100) surfaces was studied in a single-wafer, cold-wall reactor over a...     

Manipulation of chemical species in bio-oil using in situ catalytic fast pyrolysis in both a bench-scale fluidized bed pyrolyzer and micropyrolyzer

In situ catalytic fast pyrolysis (CFP) of biomass was conducted with base or acid catalysts in a bench-scale fluidized bed pyrolyzer. Complete mass balances were performed, allowing for quantitatively investigating the catalytic impacts on the final bio-oil composition. Acidic catalysts exhibited relatively higher activities for decomposition of sugar and pyrolytic lignin, dehydration, decarbonylation, and coke formation, as relative to base catalysts. Carbon balances revealed that a significant amount of carbon in bio-oil was transformed to coke during CFP. Due to the decrease in the bio-oil yield during CFP, significantly less energy was recovered in CFP products than in control fast pyrolysis products. CFP was also performed in micropyrolyzer and the results were compared with those in the bench-scale reactor to determine the consistency across the experimental systems. Different from the bench-scale pyrolyzer, the basic catalyst more strongly influenced the micropyrolyzer products and the discrepancies suggest a more rapid deactivation of the basic catalyst.     

塔里木盆地满加尔凹陷下古生界烃源岩的再认识

中国石油天然气股份有限公司在第三次油气资源评价成果和剩余油气资源领域分布评价基础上,提出了岩性-地层油气藏、前陆盆地冲断带,叠合盆地中下部组合和成熟探区富油气凹陷(区带)四大勘探领域.指出岩性-地层油气藏已成为油气储量增长的主体,前陆盆地冲断带是寻找大发现的重要领域,叠合盆地中下部组合增储地位日趋重要,富油气凹陷(区带)精细勘探潜力仍然很大.分析认为未来剩余油气资源主要分布在岩性-地层油气藏、叠合盆地中下部组合、前陆盆地、富油气凹陷(区带)、陆上新区新盆地、南海南部海域和非常规资源等七大领域,其中前四大领域勘探潜力仍然很大,是未来油气增储上产的重点领域;陆上新区新盆地、南海南部海域及非常规资源将是未来实现中国石油资源战略接替的重要领域.     

Hydrogen energy from coupled waste gasification and cement production—a thermochemical concept study

A plant concept for hydrogen production from waste gasification coupled with cement manufacturing is presented. Hot precalcined cement meal, from the operating cement process, is used as heat carrier to provide energy required by the parallel arranged gasifier. The amount of CaO present in the cement meal operates simultaneously as an effective in situ _CO2${\mathrm{CO}}_2$-sorbent. First, a practical case study was devised to be able to perform simulations for estimation of expected hydrogen yield. The influence of different operation parameters of the gasifier and the hydrogen separation unit (steam-to-fuel ratio, pyrolysis temperature, PSA efficiency) was studied based on chemical equilibrium calculations. The simulation results indicate, that the coupling provides advantages for both processes. The production of a hydrogen-rich gas via thermal gasification benefits from the continuously available fresh CaO, which improves fuel conversion reactions and captures _CO2${\mathrm{CO}}_2$ in situ. High-calorific streams from gasification process remaining after hydrogen separation may substitute fossil fuels needed for cement process. For a steam/fuel ratio of 0.3 and a PSA efficiency of 0.7, the calculated hydrogen energy yield is 46% of fuel energy input.     

Development of CdS based stable thin film photo electrochemical solar cells

CdS semiconductor films have been prepared from chemical bath deposition from basic solutions. Electron microscopic studies have revealed the presence of polycrystalline mixed cubic and hexagonal phases of CdS in the deposits. When surface treated, these layers show good photo electro chemical behaviour in Ti/CdS/S/C cell configuration where as photo etching improves the stability of CdS photo anode in polysulphide electrolyte to a great extent. Optical absorption studies of these films have been carried out in the wavelength range 350–800 nm.