| 摘要: |
| 在原有破岩机械比能理论基础上,分析水力能量对破岩与井底净化起到的积极作用，建立水力参数条件下破 岩比能模型，并完善相关理论。基于破岩比能模型与钻井参数和机械钻速的相互关系，通过分析钻进中井底工况， 判断施加钻井参数的合理性,提出相应优化措施，并利用该模型预测机械钻速。结果表明:建立的破岩比能效率评 价体系能够在钻前准确预测机械钻速、钻进中随钻诊断井底工况及优化参数、钻后优选钻头;该理论评价方法诊断 准确率髙、优化效果好且流程识别简单，具有良好的应用与推广价值。 |
| 关键词: 钻并 机械比能 钻井效率 钻井参数 优化方法 并底围压 机械钻速 |
| DOI：10.3969/j.issn.1673-5005.2012.02.018 |
| 分类号:TE 21 |
| 基金项目:国家-973”高技术研究发展计划项目(2010CB226704);国家重大专项课题(2011ZX05022-005) |
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| New method of evaluation and optimization of drilling efficiency while drilling based on mechanical specific energy theory |
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MENG Ying-feng1,YANG Mou1,U Gao1,LI Yong-jie1,TANG Si-hong2,ZHANG Jun3,UN Si-yuan4
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(1.State Key Laboratory of Oil and Cus Geology and Exploration in Southwest Petroleum University, Chengdu 610500, China;2. Engineering Technology Research Institute of Gas PetroCkina, Southwest Oil & Gas Field Company, Guanghan 618300, China;3. Exploration and Devebpment Department of Gas PetroChina, Southwest Oil & Gas Field Company, Chengdu 610500, China;4. Energy Technology & Services, Supervision & Technology Company Limited, Zharyiang 524057，China)
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| Abstract: |
| Based on the original rock brewing machine specific energy theory，by analyzing the positive role of hydraulic energy on the rock breaking and bottom-hole clean, a rock breaking specific energy model was established under the conditions of the hydraulic parameters，and the relevant theory was perfected. Based on the relations between rock breaking specific energy mode! and drilling parametei^ and rate of penetration( HOP)，appropriate optimizing measures were proposed by analyzing bot-torn-hole conditions of drilling and determining the reasonability of drilling parameters. Meanwhile, ROP can be predicted by further deducing the model. The results show that the established evaluation system of mpxjhanical specific energy efficiency can accurately predict ROP before drilling, diagnose bottom-hole conditions and optimize parameter during drilling, and select bit after drilling. The theory assessment with highly diagnostic accuracy, effective optimizing and simple operation was demonstrated by field examples of rock breaking specific energy. Therefore, it is worthy to be applied and promoted. |
| Key words: drilling mechanical specific energy drilling efficiency drilling parameter optimization method bottom-hole confining pressure rate of penetration |
