砂岩储层增产新技术--酸压

酸压增产措施一般用在碳酸盐岩储层，砂岩储层几乎不进行酸压，但近年来一些油田在砂岩储层进行酸压尝试获得成功。分析了砂岩储层一般情况下不能进行酸压的原因，提出了砂岩储层要获得成功酸压需具备的条件，并在室内对油田岩样进行了酸蚀裂缝导流能力试验。结果表明，酸蚀后岩样不但结构完整，而且还获得了良好的导流能力，从而说明砂岩储层可以进行酸压尝试。结合现场成功酸压实例井，综合分析了获得有效酸蚀裂缝导流能力的途径，初步得出了砂岩储层酸压需具备的一些基本要素，为砂岩储层增产提供了新途径。

A New Stimulating Technique of Sandstone Reservoir:Acid Fracturing

Acid fracturing is generally applied in carbonate reservoir. It is general believed that acid fracturing is not suitable for sandstone reservoir for a long time. But whether sandstone reservoir can be stimulated with acid fracturing or not, it causes people' s great concern in recent years. Some oilfields have succeeded when trying to use acid fracturing in sandstone reservoir. This paper discusses the reasons why sandstone reservoir can ' t adopt acid fracturing to stimulate and the corresponding possible conditions have been put forward in accordance with these reasons. By utilizing fluorborie acid to run experiment of fracture conductivity with the rock of some sandstone reservoir, the result shows that the structure of rock has not been destroyed and high fracture conductivity has been obtained, which indicates that the sandstone reservoir can be stimulated with acid fracturing. Through syntheticly analyzing of successful cases and the ways, we can make out the essential factors that sandstone reservoir can also apply acid fracturing, which provides the new way for well stimulation of sandstone reservoir.