关键词: 岩石, 微观分析, 判识, 油层伤害, 技术方法, 应用

Abstract: The mechanism of decreasing reservoir penetrability which was caused by the clay action, the sedimentation and the diagenesis were analyzed.The analytical method including static state and dynastic state which was used to identify the process of reservoir damaged has been introduced by means of the combined fluid testing to the microexamination with diffractometer, microscope and electronical microscope etc.Using a series of analytic technology that included the color spectrum,the mass spectrum, the pyrolysis and the fluorescence, the evaluation method whether the rudimental oil was extracted has been established during the time of overfill water.By means of the special fluorescence character of rock chip sample,the principle has been determined in division of the interface between oil and water in same formation.So the potentiality for recovery can be recognized. The reservoir of oolitic carbonate, tight-sandstone, clay-sandstone and loosen-sandstone was designed by using different ways for reservoir protection before drilling, formation improvement,the extraction in filling water formation and determination in the interface between oil and water in different area and hole in Shengli Oil Field.It was proved to have large of economic benefits in practice. This method and application results have a great value for the petroleum exploration and development in multiple oil-gas field.

Key words: rock, microexamination, identify, reservoir damaged, technical method, application