合成基钻井液储层保护技术研究

针对用合成基钻井液钻井后用水基完井液完井时储层渗透率下降的问题，进行了合成基钻井液泥饼清洗剂优选和破胶剂对用清洗剂清洗过的岩心渗透率影响的室内实验，结果表明，15%ZXW1清洗剂能使合成基钻井液在滤纸上泥饼渗透率提高127.6%，使岩心上的泥饼溶解脱落；15%ZXW1清洗剂清合成基钻井液污染的岩心，再用ZJA与ZJB复合破胶，岩心渗透率提高17%左右，达到了解除污染，保护储层的目的。     

微震监测技术在濮城油田沙三上5-10油藏的应用

微震监测技术能有效地监测出压裂产生的裂缝方向、长度和裂缝高度，据此可对压裂措施效果进行分析，避免处在注水井水线方向的油井瀑性水淹，确定注入水推进方向及剩余油分布规律。该技术是低渗油藏在压裂改造中不可缺少的一项监测手段。濮城油田沙三上5—10油藏是一套非均质性严重的低渗油藏，在开发过程中进行人工压裂是该储层进行油藏改造的主要方法之一。通过对压裂裂缝的监测，为该油藏井间调整开发方案提供了可靠依据。     

P-K物性分析技术在油气勘探中的应用

文章介绍了P-K分析仪的原理和样品预处理流程及原始资料的使用方法，通过和岩心常规分析值的对比。运用回归法，建立了回归方程；分析了影响P-K分析值的一些因素；指出了P-K物性分析技术在油气勘探中的作用。     

裂缝性砂岩油藏流固耦合渗流的等效介质模型

根据等效思想 ,给出了裂缝性砂岩油藏等效渗透率张量和变形场等效力学参数的计算方法 ,建立了油藏渗流和变形的等效连续介质模型 ;通过分析渗透率与应变之间的耦合关系 ,得到了裂缝性砂岩油藏流固耦合渗流计算的数学模型 ,并给出了计算方法。实例应用验证了所建模型的正确性。研究成果对认识裂缝性砂岩油藏的渗流规律有重要意义     

Use of X-ray computed microtomography to understand why gels reduce relative permeability to water more than that to oil

X-ray computed microtomography (XMT) was used to investigate why gels reduce relative permeability to water more than that to oil in strongly water-wet Berea sandstone. XMT allows saturation differences to be monitored for individual pores during various stages of oil, water, and gelant flooding. The method also characterizes distributions of pore size, aspect ratio, and coordination number for the porous media. We studied a Cr(III) acetate–HPAM gel that reduced permeability to water (at S_or) by a factor 80–90 times more than that to oil (at S_wr). In Berea, the gel caused disproportionate permeability reduction by trapping substantial volumes of oil that remained immobile during water flooding (i.e., 43.5% S_or before gel placement versus 78.7% S_or after gel placement). With this high trapped oil saturation, water was forced to flow through narrow films, through the smallest pores, and through the gel itself. In contrast, during oil flooding, oil pathways remained relatively free from constriction by the gel.     

气相流化床聚乙烯装置排放气回收工艺的改进

通过比较压力变化及低压冷凝器对回收的影响,对现有气相流化床聚乙烯装置排放气回收工艺作了一些改进,并提出采用膜分离方法提纯氮气,减少尾气排放。     

超吸水纤维非织造材料导湿因素探讨

文章为了研究水滴在超吸水纤维非织造材料中的扩散情况,搭建了动态导湿测试装置,结合图像处理技术对工艺参数不同的几种样品进行了对比和研究。     

吸湿排汗整理剂在改善织物湿传递性能中的应用

采用吸湿排汗柔软整理剂XY - WST对涤/粘、纯粘胶、涤/棉织物进行处理,分别采用垂直芯吸法和透湿杯法对不同整理工艺条件下织物的湿传递性进行测试.结果表明:织物的芯吸高度及透湿量的变化随着整理剂用量的增加而增加,但用量过多会使织物厚度相应增加,阻碍液体在织物中的传递.研究表明,吸湿排汗整理剂用量以10 ～15 mL为宜,对织物的湿传递性能的改善最为明显.     

光照对包装鲜鱼肉品质动态变化的影响

以高阻隔材料A和低阻隔材料B两种包装材料,采用真空包装和普通包装两种包装方式包装鲜鱼肉,贮藏在20℃条件下,研究光照对包装鲜鱼肉挥发性盐基氮(TVB-N)、TBA以及pH的影响。结果表明:包装鲜鱼肉的TVB-N值、TBA值均随着贮藏时间的延长而增加,TVB-N值在贮藏前期变化速度比后期小,光照对其影响也较小,而TBA值的变化却前期快后期慢,光照影响较大,即光可以提高TBA值增加速度,光照条件下贮存的包装鲜鱼肉pH增加量均稍微高于避光贮存。     

Chemical and structural characterisation of almond oil bodies and bovine milk fat globules

Lipids in almonds are present as oil bodies in the nut. These oil bodies are surrounded by a membrane of proteins and phospholipids and are a delivery vehicle of energy in the form of triglycerides, similarly to the more studied bovine milk fat globule membrane. Chemical, physical and microscopic analyses revealed major differences in the composition and structure of almond oil bodies and bovine milk fat globules. The lipids of both natural emulsions differed in degree of unsaturation, chain length, and class. The almond oil body membrane does not contain any cholesterol or sphingomyelin unlike the bovine milk fat globule membrane. Therefore, the phospholipid distribution at the surface of the oil bodies did not present any liquid-ordered domains. The membranes, a monolayer around almond oil bodies and a trilayer around bovine fat globules, may affect the stability of the lipid droplets in a food matrix and the way the lipids are digested.