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地质工程一体化技术在四川威远204井区页岩气开发中的应用
Application of geological engineering integration in shale gas development of the Weiyuan 204 Block, Sichuan
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- DOI:
- 10.3969/j.issn.1001-2206.2025.S.030
- 作者:
- 牛犇, 王天驹, 王昊天, 郝志伟
NIU Ben, WANG Tianju, WANG Haotian, HAO Zhiwei
- 作者单位:
- 中国石油集团工程技术研究有限公司, 天津 300451
CNPC Engineering Technology R&D Company Limited, Tianjin 300451, China
- 关键词:
- 地质工程一体化; 压裂优化; 产能预测; 水平井
geology-engineering integration;fracturing optimization;productivity prediction;horizontal well
- 摘要:
- 四川威远204井区龙马溪组底部发育富含烃类气体的页岩层，是国内页岩气勘探开发的热点区域之一。随着老井生产接近尾声，新井加密压裂的实施导致井间距缩小、井间干扰加剧，且老井裂缝对新井压裂施工产生不利影响，这些问题将严重影响压裂效果及产量。为解决上述问题，运用地质工程一体化模拟技术，整合利用精准地质建模、三维离散裂缝网格及复杂油藏模拟技术，构建水平井组地质工程一体化模型。该模型可用于优化单井及井组压裂施工设计参数，评价压裂改造后动用范围和生产方案，并分析井间干扰程度影响因素。研究结果对提升区块整体储量动用率、改善开发效果具有重大意义。
The bottom of the Longmaxi Formation in the Weiyuan 204 Block, Sichuan Province, is developed with shale rich in hydrocarbon gases, which makes it a hotspot for shale gas exploration and development in China. As the production of old wells is drawing to an end, the implementation of infilling fracturing for new wells has led to a reduction in well pacing and intensified inter-well interference, and the fractures from old wells affect the fracturing of new wells. All of these will seriously affect the fracturing effect and production. To address the above issues, this study applied the geology-engineering integrated simulation technology, integrated and utilized precise geological modeling, 3D discrete fracture grids, and complex reservoir simulation technologies to construct a geologyengineering integrated model for horizontal well groups. It optimized the fracturing design parameters for single wells and well groups, evaluated the utilization range and production plans after fracturing, and analyzed the influencing factors of inter-well interference degree. The study results are of great significance for improving the overall reserve utilization rate of the block and enhancing the development effect.