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煤层作为煤层气的生气层和储集层,在储层物性、机械力学性质及储集方式等方面具有与常规油气储层不同的特征;这些特征决定了煤层气井钻井、取心、完井及储层保护诸技术的特殊性。据此,我们研究并形成了一整套煤层气井的取心技术、储层保护技术和完井技术。我们将这套技术应用于中国柳林试验区,不仅满足了地质评价的需要,也为该区实现煤层气工业性开采起到了积极推动作用。
The coal seam, as the gas-bearing layer and reservoir of CBM, has different characteristics from the conventional oil and gas reservoirs in terms of reservoir physical properties, mechanical and mechanical properties and reservoir methods. These characteristics determine the drilling, coring, completion and The particularity of technologies for reservoir protection. Accordingly, we have studied and formed a complete set of coring technology, reservoir protection technology and completion technology of CBM wells. We apply this technology to China’s Liulin experimental area, which not only meets the needs of geological evaluation but also plays a positive role in promoting CBM industrial mining in this area.