| 摘要 |
<p>A method of testing imbibition of an imbibant fluid by a matrix 4 of particles with a fluid therein, comprises making a body of packed particles with a matrix fluid filling the interstices between the particles, placing an imbibant fluid in a capillary 6 or 7, partially inserting the capillary into the body, so that part of the capillary with imbibant fluid therein projects from the body, and observing time for fluid to be taken from the capillary into the body. Preferably, the matrix fluid is a hydrocarbon oil and the imbibant fluid is in an aqueous solution. A plurality of capillary tubes may be used for carrying out simultaneous tests in one matrix. In the example, the matrix is made of calcium carbonate particles packed into cakes having a mixture of decane and naphthenic acids therein; the imbibant liquids tested are surfactant solutions comprising dodecyltrimethylammonium bromide (DTAB) in aqueous potassium chloride solution. Possible application: testing the imbibition of fluid by the rock of an oil reservoir.</p> |
