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川西深层须家河组前期勘探与开发表明,须家河组气藏呈现多构造、多层位含水、构造高部位和低部位气水无明显重力分异的非常规性,复杂的气水分布严重制约了须家河气藏的规模勘探开发,尤其是制约了气体钻井新工艺技术的推广应用以及现场储层的识别与气水分辨的精度,针对此问题,本文通过对川西主体含气构造须家河组气、水显示层、测试层的纵向梳理和横向联井、连片对比,总结了气水纵横向分布特征,对于提高录井现场储层含气含水性识别与评价准确度,对于钻井及泥浆工艺技术的优化以及测试选层的优选具有切实的参考作用。
Early exploration and development of the Xujiahe Formation in the western Sichuan Basin shows that the Xujiahe Formation gas reservoirs are characterized by multi-structure and multi-layered water-bearing structures, unconventional and complicated gas and water distribution with no significant gravitational differentiation between high and low positions In particular, it restricted the popularization and application of new technology of gas drilling and the recognition of on-site reservoirs and the accuracy of gas and water resolution. In response to this problem, this paper analyzed the main gas-bearing structures In order to improve the recognition and evaluation accuracy of the gas-bearing water content in the well logging site, the gas and water distribution of the Xujiahe Formation gas, the water display layer, the longitudinal combing of the test layer and the horizontal joint wells and contiguous sections were summarized. For the drilling and mud technology optimization and selection of test layer has a practical reference.