中低孔隙度渗透率储层钻井液侵入规律研究
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摘要
针对中低孔隙度渗透率储层钻井液侵入特征的研究较少,没有形成有效的规律性认识。提出了利用5岩心联测实验进行钻井液侵入规律研究的新思路,将动态联测实验数据与实际测井资料相结合,形成了中低孔隙度渗透率储层钻井液侵入规律认识。并建立了不同孔隙度渗透率条件下中低孔隙度渗透率储层钻井液侵入速率计算模型,进而得到钻井液侵入储层深度。在研究区进行了应用,为测井解释、射孔参数优化设计和压裂施工设计提供了指导性建议。
At present, there were few researches on the invasion characteristics of reservoirs with medium-low porosity and permeability, and no effective common understanding was formed. Based on the 5-cores-combined-test machine, a new method for the study of invasion law was proposed in this paper. This method combines the dynamic joint measurement experimental data with the actual logging data to form an law of the drilling fluid invasion for reservoirs with medium-low porosity and permeability. In addition, the calculation model for invasion rate of reservoir with medium-low porosity and permeability under different porosity and permeability conditions was also established, and the invasion depth of drilling fluid was obtained. The method has been applied in the research area, which provided guiding suggestions for logging interpretation and evaluation, optimization design of perforation parameters and fracturing construction design.
At present, there were few researches on the invasion characteristics of reservoirs with medium-low porosity and permeability, and no effective common understanding was formed. Based on the 5-cores-combined-test machine, a new method for the study of invasion law was proposed in this paper. This method combines the dynamic joint measurement experimental data with the actual logging data to form an law of the drilling fluid invasion for reservoirs with medium-low porosity and permeability. In addition, the calculation model for invasion rate of reservoir with medium-low porosity and permeability under different porosity and permeability conditions was also established, and the invasion depth of drilling fluid was obtained. The method has been applied in the research area, which provided guiding suggestions for logging interpretation and evaluation, optimization design of perforation parameters and fracturing construction design.
引文
[1] 刘尊年,孙建孟,迟秀荣,等.钻井液侵入研究现状分析 [J].地球物理学进展,2012,27(6):2594-2601.
[2] 杨映洲,王国栋.低孔隙度渗透率储层不同钻井液侵入时间电阻率特征分析 [J].石油化工应用,2014,12(33):37-41.
[3] 冯尚坤,许庆英,樊立新,等.钻井液侵入对储层电性的影响及实例分析 [J].测井技术,2007,31(6):563-566,570.
[4] 潘保芝,张瑞,李丁,等.钻井液侵入致密气层双侧向电阻率变化模拟研究 [J].世界地质,2015,34(3):792-799.
[5] 丁娱娇,邵维志,王志勇,等.不同钻井液侵入环境下储层电性变化特征 [J].测井技术,2009,33(4):315-320.
[6] 黄龙,鲍志东,张文瑞,等.淡水钻井液侵入引起的低阻油气层实例分析 [J].西南石油大学学报(自然科学版),2008(2):14-18,184.
[7] 王欣.钻井液侵入对水层电阻率的影响研究 [J].油气藏评价与开发,2015,5(1):54-57,61.
[8] 董红,蒋兴才.基于时间推移的咸水钻井液侵入条件下的储层流体识别方法 [J].测井技术,2011,35(2):155-159.
[9] 谢关宝,范宜仁,吴海燕,等.储层钻井液侵入深度预测方法研究 [J].测井技术,2006,30(3):240-242.
[10] 田鑫,章成广.钻井液侵入条件下的电阻率校正方法初探 [J].石油天然气学报(江汉石油学院学报),2005(增刊5):749-750.
*非法定计量单位,1 mD=9.87×10-4 μm2;1 cP=0.001 Pa·s,下同
[2] 杨映洲,王国栋.低孔隙度渗透率储层不同钻井液侵入时间电阻率特征分析 [J].石油化工应用,2014,12(33):37-41.
[3] 冯尚坤,许庆英,樊立新,等.钻井液侵入对储层电性的影响及实例分析 [J].测井技术,2007,31(6):563-566,570.
[4] 潘保芝,张瑞,李丁,等.钻井液侵入致密气层双侧向电阻率变化模拟研究 [J].世界地质,2015,34(3):792-799.
[5] 丁娱娇,邵维志,王志勇,等.不同钻井液侵入环境下储层电性变化特征 [J].测井技术,2009,33(4):315-320.
[6] 黄龙,鲍志东,张文瑞,等.淡水钻井液侵入引起的低阻油气层实例分析 [J].西南石油大学学报(自然科学版),2008(2):14-18,184.
[7] 王欣.钻井液侵入对水层电阻率的影响研究 [J].油气藏评价与开发,2015,5(1):54-57,61.
[8] 董红,蒋兴才.基于时间推移的咸水钻井液侵入条件下的储层流体识别方法 [J].测井技术,2011,35(2):155-159.
[9] 谢关宝,范宜仁,吴海燕,等.储层钻井液侵入深度预测方法研究 [J].测井技术,2006,30(3):240-242.
[10] 田鑫,章成广.钻井液侵入条件下的电阻率校正方法初探 [J].石油天然气学报(江汉石油学院学报),2005(增刊5):749-750.
*非法定计量单位,1 mD=9.87×10-4 μm2;1 cP=0.001 Pa·s,下同