论文部分内容阅读
因煤层性脆、密度测井仪器测量源距短的特点,以及水平井的岩屑、泥浆由于重力作用,是导致密度测井影响的主因。研究得出的具体因素有井径、井眼扩径、岩屑堆积厚度、泥浆侵入、地层厚度、地层不均质性、仪器精度、仪器偏心等。对各个影响因素进行分析论证,通过实验图版直观的展示了各影响因子的影响程度。为煤层气的勘探开发,提供理论依据。
Due to the characteristics of brittle coal seam and density logging tools, and the cuttings and muds of horizontal wells, gravity is the main cause of density logging. The specific factors of the study are well diameter, borehole diameter expansion, cuttings accumulation thickness, mud invasion, formation thickness, formation heterogeneity, instrument precision, instrument eccentricity and so on. Analysis and demonstration of various influencing factors, through the experimental plate shows the impact of the impact of various factors. For the exploration and development of coalbed methane, to provide a theoretical basis.