Understanding the controls of fines migration in sandstones.

为了保持砂岩油藏的石油产量，采用了三次采油或提高采收率的方法。提高石油采收率的一种方法是用淡化海水冲洗。关于低矿化度提高采收率的机理已经提出了很多种，其中细粒运移是本课题的重点研究内容之一。细粒运移涉及在低矿化度驱油过程中动员粘土矿物等小颗粒矿物，这些矿物颗粒既可以输送吸附的石油，也可以改变油层的波及。我们将与英国石油公司的合作伙伴合作，努力了解使粘土矿物微粉流动的因素，一旦它们被动员起来，它们是如何移动的，以及细粘土矿物是如何通过砂岩运输的，或者是如何再次固定的。

To maintain production of oil from sandstone reservoirs tertiary, or enhanced, oil recovery methods are employed. One method of enhanced oil recovery involves flushing with desalinated seawater. A number of mechanisms have been proposed for how low salinity enhanced oil recovery may occur, one of which, fines migration, is studied in detail in this project. Fines migration involves the mobilisation of small particles of minerals such as clay minerals during low salinity flooding, which act to both transport the adsorbed oil and to also change the reservoir sweep. Working with partners at BP we will work to understand factors that mobilise clay mineral fines, how they move once mobilised and how fine clay minerals are either transported through the sandstone, or become fixed again.