气相色谱分析资料评价水淹层方法研究

Method study on evaluating water-flooded zones with gas chromatographic analytical data

针对目前评价薄差层、非均质层水淹状况用测井资料难以令人满意的现状,该文从寻找一种提高油层水淹状况解释准确度的新途径出发,在系统总结密闭取心样品的气相色谱谱图的规律基础上,探讨了应用气相色谱资料对油层水淹级别定性评价的新方法,取得了一定的效果。展示了该项技术在综合判断油层水淹程度、提高老油田调整挖潜效率方面良好的应用前景。

After Daqing Lasaxing Oilfield entered into the later stage of high water bearing production,it was more and more difficulty to adjust the potential,and there existed a certain difficulty for evaluating thin and poor zones、water-flooded state of non-homogeneous zones,therefore it was urgent to seek a kind of new way for improving interpretation accuracy for the water -flooded state. On the basis of summarizing the rules of gas chromatographic spectrum chart for sealed coring sample,the paper explored the new way for evaluating water-flooded degree of oil zones with gas chromatographic information quantitatively and the work had got a certain result. The author also showed the better application prospects of the technology in judging water-flooded degree of oil zones and in improving and adjusting the potential production rate for old oilfields.