论文部分内容阅读
在联合注入低浓度表面活性剂和生物聚合物后，再注入用于流度控制的一段聚合物缓冲段塞。将会引起化学物质消耗的降低和高的原油采收率，这种方法称为低界面张力聚合物驱暂，即LTPF。本文给出了LTPF所隐含的物理化学现象的一个重要结论。在进行LTPF时，溶液中表面活性剂一聚合物的反应和在驱替过程中表面活性剂与聚合物的色层分离被认为是十分重要的因素。为了获得LTPF动态，讨论了与化学物质和多孔介质有关的准则。驱替机理基于水包油型（Ⅱ型）驱替性质和多相（Ⅲ型）驱替性质之上。在多相状态恒定的含盐量条件下进行LTPF时，建议应用聚合物梯度来减少表面活性剂的漏失。本文还提出了借助于胶体渗滤方法的用于研究表面活性剂—聚合物混合物形成的HPLC方法。
After the joint injection of low concentrations of surfactant and biopolymer, a further length of polymer buffer slug for flow control is injected. Will lead to the reduction of chemical consumption and high crude oil recovery, this method is called low interfacial tension polymer flooding, namely LTPF. This article gives an important conclusion of the physico-chemical phenomenon implied by LTPF. The reaction of the surfactant-polymer solution in the solution and the chromatographic separation of the surfactant and the polymer during flooding are considered to be very important factors in the LTPF. In order to obtain LTPF dynamics, guidelines related to chemicals and porous media are discussed. The displacement mechanism is based on the oil-in-water (Type II) flooding and the multi-phase (Type III) flooding. When LTPF is carried out with a constant salt content in the multiphase state, it is advisable to use polymer gradients to reduce the surfactant loss. Also presented herein is an HPLC method for studying the formation of a surfactant-polymer mixture by means of a colloidal percolation method.