高效分子排阻色谱法测定化学驱油体系中的部分水解聚丙烯酰胺

介绍了用分子排阻色谱技术定量测定化学驱油体系中的部分水解聚丙烯酰胺（ＰＩＩＰＡ）的方法。该方法以ＳＩ－２００二羟基键合相为固定相，以甲醇／０．０５ｍｏｌ／ｌ的ＮａＩＩ２ＰＯ４（体比４０／６０）为流动相，使用ＵＶ检测器在２１３ｎｍ处检测。表面活性剂／聚合物驱油液中所有组分对ＰＩＩＰＡ的测定均无干扰。吸附试验证明测定可靠性好。最低检测浓度为１μｇ／ｍｌ。回收率为９７．３％－１００．５％。     

涠洲11-1油田大位移井钻井液技术

涠洲11-1油田A13h、A14h井,垂深1000m左右,水垂比分别达2.92和2.15,尤其是A13h井是近年来北部湾所钻的水垂比最大的大位移井。二开12-1/4"井段采用PHPA/KCL体系,三开8-1/2"井段采用PRD体系完成大位移井段作业。现场应用效果表明,PHPA/KCL体系具有较好的抑制防塌效果,以及较好的润滑效果,PRD体系携砂和储层保护效果良好,满足了大位移井对井眼净化的要求,确保了该大位移井钻井作业的顺利进行。     

缅甸Y-1井钻井液的研究与应用

通过聚合物体系直接转化得到KCl／PHPA钻井液体系,使用KCl、PHPA控制泥浆的抑制包被性能,使用沥青类、树脂类处理剂增强泥浆的封堵防塌性能,维护适当的流变性能并且严格控制失水。将KCI／PHPA钻井液体系用于缅甸Y-1井的现场钻探,结果表明,该体系具有抑制性好、防塌能力强、滤失量低、润滑性能好、性能易于调控等特性,有效地克服了凝灰岩地层破碎掉块、坍塌、岩屑携带等问题。钻井过程中起下钻畅通,下套管顺利,井径规则,满足安全钻井的要求。     

Telechelic polymers by living and controlled/living polymerization methods

Telechelic polymers, defined as macromolecules that contain two reactive end groups, are used as cross-linkers, chain extenders, and important building blocks for various macromolecular structures, including block and graft copolymers, star, hyperbranched or dendritic polymers. This review article describes the general techniques for the preparation of telechelic polymers by living and controlled/living polymerization methods; namely atom transfer radical polymerization, nitroxide mediated radical polymerization, reversible addition-fragmentation chain transfer polymerization, iniferters, iodine transfer polymerization, cobalt mediated radical polymerization, organotellurium-, organostibine-, organobismuthine-mediated living radical polymerization, living anionic polymerization, living cationic polymerization, and ring opening metathesis polymerization. The efficient click reactions for the synthesis of telechelic polymers are also presented.