挖掘系数法在苏里格气田马五碳酸盐岩储层流体识别中的应用

马五_4~1碳酸盐岩储层是苏里格气田勘探开发的目的层位之一,储层类型多样、孔隙结构复杂造成岩电参数变化大,且地层水矿化度分布范围广,基于电阻率的流体判识方法难以有效识别高电阻率水层与低电阻气率层。利用挖掘系数法基于中子孔隙度测井岩石体积模型得到挖掘系数与含气饱和度的关系。天然气和地层水的含氢指数差别较大,挖掘系数与含气饱和度正相关;相较电法测井,挖掘系数受到的影响因素较少;对含气饱和度较低的储层,挖掘系数受喉道半径控制,判识误差大。实际资料的处理解释结果证明,该方法能够准确判识碳酸盐岩储层的流体性质。     

催化裂化催化剂上金属元素对CO氧化的影响

采用污染Fe、Ca和浸渍稀土元素La、Ce等方法改变老化剂的化学组成,在500~600℃反应温度下,考察催化裂化催化剂对CO氧化的影响。结果表明:Fe和CeO_2能够促进CO的氧化,且催化剂中Fe和CeO_2含量越高,对CO氧化过程促进越明显;Ni,V,La_2O_3对CO氧化的影响较小,但CO的转化率随着催化剂上这些组分含量的增加而提高;Ca对CO的氧化略有抑制作用。     

Synthesis hydrophilic hybrid nanoparticles and its application in wettability alteration of oil-wet carbonate rock reservoir

In this study, synthesized SiO₂/ZnO hybrid nanoparticles were used to change the wettability of carbonate rock from highly oil-wet to strongly water-wet state. The SiO₂/ZnO nanoparticles were synthesized by modified sol-gel method. In this method, TEOS was used to increase the functional groups on the surface of the ZnO nanoparticles to produce highly hydrophilic nanoparticles. The contact angle measurements were conducted on the rock surface before and after nano-treatment. The contact angle of oil droplet with the rock changed from 0° to 150°, 161°, 164° and 170° after impregnation the rock with 0.01, 0.033, 0.07 and 0.33 wt.% nanofluids.     

Distinct Roles of Soluble and Transmembrane Adenylyl Cyclases in the Regulation of Flagellar Motility in Ciona Sperm

Adenylyl cyclase (AC) is a key enzyme that synthesizes cyclic AMP (cAMP) at the onset of the signaling pathway to activate sperm motility. Here, we showed that both transmembrane AC (tmAC) and soluble AC (sAC) are distinctly involved in the regulation of sperm motility in the ascidian Ciona intestinalis. A tmAC inhibitor blocked both cAMP synthesis and the activation of sperm motility induced by the egg factor sperm activating and attracting factor (SAAF), as well as those induced by theophylline, an inhibitor of phoshodiesterase. It also significantly inhibited cAMP-dependent phosphorylation of a set of proteins at motility activation. On the other hand, a sAC inhibitor does not affect on SAAF-induced transient increase of cAMP, motility activation or protein phosphorylation, but it reduced swimming velocity to half in theophylline-induced sperm. A sAC inhibitor KH-7 induced circular swimming trajectory with smaller diameter and significantly suppressed chemotaxis of sperm to SAAF. These results suggest that tmAC is involved in the basic mechanism for motility activation through cAMP-dependent protein phosphorylation, whereas sAC plays distinct roles in increase of flagellar beat frequency and in the Ca²⁺-dependent chemotactic movement of sperm.     

超声波对硫酸钡结垢影响规律研究

试验结果表明,超声波技术在集输管线和计量站应用中,能够满足在线运行的工况要求,具有很好的防垢与除垢效果。近些年,我国在超声波防垢和除垢技术领域取得显著的成就,该技术具有重要的科研价值和应用前景。其中,超声波的空化效应、活化效应、剪切效应可以有效的除垢防垢。近年来,研究超声波对碳酸钙结垢影响规律的文献比较多,但是超声波对硫酸钡结垢影响规律的研究较少,文章通过称重法和电镜粒度分析法研究超声波对硫酸钡结垢影响规律,为油气田有效的除去硫酸钡污垢提供一定的理论基础。     

环道实验研究碳酸钙结垢规律

我国出产的石油大多数属于重油,结垢问题严重。通过设计环道实验,发现随着流速的增大,碳酸钙结垢诱导期加长,结垢速率减小,渐进污垢热阻减小;表面温度越高,结垢速率越大。之前的文献中很少讨论碱度对换热表面结垢的影响,本文对不同硬度及碱度含量的水质进行了实验研究发现,碱度越大结垢越严重;随着溶液硬度的增大,结垢速率先是增大,待增大至一定浓度时降低。     

聚丙烯酰胺和氯化钙复合体系处理高浓度洗煤废水的研究

选择合适的絮凝剂对煤矿洗煤废水的絮凝处理具有决定性意义,可实现保护环境、废水可持续利用及节省成本的多重意义。本文针对江西省某煤矿高浓度洗煤废水的特点,提出了采用聚丙烯酰胺加氯化钙絮凝剂的复合处理工艺,运行结果表明,经工艺处理的洗煤废水符合相关标准要求,可回收循环使用,在技术和经济上都可行。     

硫酸钙晶须短玻纤协同增强尼龙6复合材料的力学性能

以尼龙6为基体树脂,硫酸钙晶须和短玻纤为增强材料制备了硫酸钙晶须/短玻纤/尼龙6复合材料,研究了不同晶须含量对复合材料力学性能的影响。结果显示,晶须含量不超过10%时,晶须与短玻纤对尼龙6有协同增强作用,拉伸强度、弯曲强度和弯曲模量分别提高了8.7%、7.5%和8%;经过表面处理的晶须增强效果好于未经表面处理晶须;采用侧向加入增强材料方式制备的复合材料力学性能远优于主料口加入方式。     

硫酸钙（石膏）填料在橡胶中的应用综述

橡胶制品早已成为国际贸易重要的大宗商品,在世界市场上,橡胶产品已形成了以轮胎为中心,以工业、建筑用品为重点,涉及胶鞋、胶布等Et用制品以及医疗卫生、文化体育等各大类的产品群体。随着橡胶应用领域的扩展,无机填料在橡胶工业中的地位越来越突出。本文简单地介绍了硫酸钙填料在橡胶中的应用。