曲104块大斜度井钻井技术实践

介绍了临盘地区曲１０４块２０多口大斜度井钻井施工情况。总结分析了曲１０４块大斜度井直井段、造斜段、稳斜段井眼轨迹控制技术要点以及井下安全钻井措施。     

Diffusion fields associated with size and shape coarsening of oblate spheroids

The diffusion field or solute concentration distributed around an oblate spheroidal particle simulating a disc-shaped precipitate has been solved for varying particle aspect ratios and varying concentrations along the precipitate surface because of the curvature effect. With oblate spheroidal coordinates, the principal curvatures of the oblate spheroidal surface are derived as functions of the angular variable, and the Laplace field equation is separated into two Legendre equations on the angular variable and on the radial variable. The analytical solution to the Laplace equation, fitting the present boundary conditions, is secured as the sum of a Legendre function and a Legendre series composed of Legendre functions of the second kind with imaginary arguments. The Legendre function gives the concentration distribution with an ignored curvature effect, whereas the series shows the contribution from the curvature effect. Numerical results of normalized concentrations are presented as functions of the radial and angular variables for selected aspect ratios. The concentration distributions around both oblate and prolate spheroidal particles are shown to reduce to the concentration distributed around a spherical particle when the aspect ratio of the spheroids approaches unity.     

天然气管道通过黄土地区的水工保护

陕甘宁气田至北京输气管道工程作为国家的重点工程，全长约８６０ｋｍ，地跨三省，其中设在陕北黄土高原的管段有１７０多公里。本文叙述了四川石油设计院在对黄土地区进行专门的岩土工程研究的基础上，学习和借鉴当地公路，铁路等工程建设的成功经验，总结和勃勃出一些因地制宜，切实可行，符合管道建设特点的水工保护措施。     

等位酶标记快速鉴定杂交水稻种子初步研究

应用改进的淀粉凝胶同工酶电泳技术，对２１种同工酶进行了分析，获得３２个位点，４７个等位酶基因，筛选出５个杂交水稻组合特异性等位酶标记，辅助标记鉴定标记９个，可地供试的９个杂交水稻组合进行真伪及纯度鉴定。应用该项技术每天每人可测定１６０个样品，每个样品检测成本在０．５元人民币左右。因此，应用等位酶标记适用于大样本量逐粒鉴定杂交水稻种子的真伪及纯度，并可初步区分混杂的原因，是一套可用于杂交水稻种子商业     

时频域球面发散和吸收补偿

根据地震波振幅衰减随不同的频率成分有不同的吸收衰减特点，本文基于小波变换理论，提出了时频域球面发散和吸收补偿的处理方法。首先介绍了振幅衰减的物理机制，将吸收因子分解为地表一致性吸收项和大地吸收项。     

孤东油田高压调整井固井技术

通过对孤东油田的固井技术研究,总结了高压调整井的固井技术措施,解决了高压调整井固井的技术难题。研究与应用结果表明,套管外封隔器可有效地防止注水泥过程中及封固后油气上窜或层间窜扰;早强水泥浆体系可有效地提高水泥石的早期强度;管外封隔器和早强水泥浆体系配合使用能够明显提高高压调整井的固井质量,也为调整井固井提供了新的思路。     

粘土颗粒的分形特征及分维数的测定方法

粘土颗粒具有分形特征。分维数是一定类型的粘土矿物颗粒在一定环境中颗粒几何性质衣几何形貌的定量反映,可用于表征颗粒的分散和聚集方式及其机理。综述了粘土颗粒的分形研究,介绍了三种分维数的实验测定方法,即吸附法、SAXS(小角度X射线散射)法和NMR(核磁共振)法,并讨论了各方法的分辨率及各自的特点。     

The 1996 North American Interagency Intercomparison of Ultraviolet Monitoring Spectroradiometers

Concern over stratospheric ozone depletion has prompted several government agencies in North America to establish networks of spectroradiometers for monitoring solar ultraviolet irradiance at the surface of the Earth. To assess the ability of spectroradiometers to accurately measure solar ultraviolet irradiance, and to compare the results between instruments of different monitoring networks, the third North American Interagency Intercomparison of Ultraviolet Monitoring Spectroradiometers was held June 17–25, 1996 at Table Mountain outside Boulder, Colorado, USA. This Intercomparison was coordinated by the National Institute of Standards and Technology (NIST) and the National Oceanic and Atmospheric Administration (NOAA). Participating agencies were the Environmental Protection Agency; the National Science Foundation; the Smithsonian Environmental Research Center; the Department of Agriculture; and the Atmospheric Environment Service, Canada. The spectral irradiances of participants’ calibrated standard lamps were measured at NIST prior to the Intercomparison. The spectral irradiance scales used by the participants agreed with the NIST scale within the combined uncertainties, and for all lamps the spectral irradiance in the horizontal position was lower than that in the vertical position. Instruments were characterized for wavelength uncertainty, bandwidth, stray-light rejection, and spectral irradiance responsivity, the latter with NIST standard lamps operating in specially designed field calibration units. The spectral irradiance responsivity demonstrated instabilities for some instruments. Synchronized spectral scans of the solar irradiance were performed over several days. Using the spectral irradiance responsivities determined with the NIST standard lamps, the measured solar irradiances had some unexplained systematic differences between instruments.     

β-乳球蛋白凝胶及其应用

综述了β-乳球蛋白凝胶的种类、影响β-乳球蛋白凝胶的因素以及β-乳球蛋白凝胶在食品工业上的应用,并对β-乳球蛋白凝胶的开发前景进行了展望。     

3,6-二(3,5-二甲基吡唑-1-基)-1,2,4,5-四嗪的晶体结构

采用NO2氧化3,6-二(3,5-二甲基吡唑-1-基)-1,2-二氢-1,2,4,5-四嗪(BDT)制备了3,6-二(3,5-二甲基吡唑-1-基)-1,2,4,5-四嗪(BT),在无水乙醇中用缓慢蒸发法培养了其单晶,用X射线衍射分析确定了其晶体结构。结果表明,分子属于单斜晶系,P21/c空间群,晶体学参数为a=1.096 nm,b=1.651 nm,c=0.714 nm,β=103.895(4)°,Z=4。