| 深孔岩心钻探问题探讨 |
| 投稿时间：2011-01-07 修订日期：2011-08-13 点此下载全文 |
| 引用本文：张培丰.深孔岩心钻探问题探讨[J].钻探工程,2011,38(8):6-11.ZHANG Pei-feng. Analysis on Deep-hole Geological Core Drilling[J]. Drilling Engineering, 2011,38(8):6-11. |
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| 中文摘要:深孔岩心钻探的核心问题是孔壁稳定，其钻前预测涉及地层孔隙压力、地层应力、地层坍塌压力和破裂压力，是实现深孔岩心钻探优质、安全、高效和低成本的关键，决定着孔身结构、套管程序与套管强度、钻井液密度与流变性能的设计。以孔壁稳定为基础，从孔身结构和套管程序、钻具组合、钻探设备方面论述深孔岩心钻探存在的问题，并提出具体的改进建议。 |
| 中文关键词:深孔岩心钻探 孔壁稳定 钻具组合 钻探设备 |
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| Analysis on Deep-hole Geological Core Drilling |
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| Abstract:The hole-wall stability is one of the focuses of deep-hole geological core drilling. The accurate prediction of formation pore pressure, in-situ stress state, formation collapses pressure and fracture pressure before drilling are vital to conduct quality, safe, efficient and low-cost drilling. These are the design basis of the hole-wall structure, casing program and strength, density and rheological properties of drilling fluids. Based on the hole-wall stability, discussion is made on the existing problems of hole-wall structure, casing program, drilling tool assembly, drilling equipment in deep-hole geological core drilling and suggestions are put forward for the improvement. |
| keywords:deep-hole geological core drilling hole-wall stability drilling tool assembly drilling equipment |
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