论文详情
探井地层孔隙压力计算
石油钻采工艺
2000年 22卷 第5期
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Title
METHODS TO ESTIMATE FORMATION PORE PRESSURE IN WILDCAT WELL
Authors
Liu Yansheng
Su Yi’nao
单位
中国石油勘探开发研究院, 北京 100083
摘要
对地层压力的计算准确与否直接影响深部探井钻井工程的设计和正常施工,因而成为提高深井钻探效率的一个技术关键。在对地层上覆压力、孔隙压力有关计算模式理论研究分析基础上,结合深部探井的施工实际情况,对压力计算模式进行了优选;建立了综合的钻前、随钻及钻后各环节压力计算的系统化、精确化方案;对影响多数孔隙压力计算模型的正常压实趋势线,提出了多种相关的验证修正算法;对压力计算过程中一些关键中间环节参数转换模式进行了探索;形成了孔隙压力数据处理系统软件。通过在几口深部探井进行实际应用,表明能够使地层孔隙压力的计算逐步精确化。
Abstract
This paper discusses the methods used to estimate formation pore pressure in the deep or ultra-deep wildcat well. A method is optimized based on the analysis to the related calculating models of covering pressure and pore pressure, and in combination with the actual drilling practice of deep well. The optimum method is established for formation pressure calculation before, while and after drilling, which makes the best use of geologic, seismic, logging, drilling, RFT and well kicks data, making the pressure calculation and analysis more systematic and more precise with each stage of drilling process.
关键词：
探井;
地层压力;
压力预测;
压力梯度;
Keywords:
wildcat;
formation pressure;
pressure prediction;
pressure gradient;
DOI
10.3969/j.issn.1000-7393.2000.05.002
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