钻探工程2025，Vol.52Issue(2)：20-27,8.DOI:10.12143/j.ztgc.2025.02.003
新疆尼勒克地区煤层气井钻井复杂处理技术
Complex processing technology for coalbed methane wells in Nileke area,Xinjiang:Taking Well HDCS-2 as an example
摘要
Abstract
HDCS-2 well is a coalbed methane parameter well and production test well deployed in the Nileke Depression of the Ili Basin.Through optimizing drilling fluid parameters,high viscosity drilling fluid flushing,explosive loosening and other technical measures,the drilling complexity problems are solved including block falling,drilling tool obstruction during the tripping,and buried drilling in long open hole of the coal bearing strata,ensuring the completion of the project and the achievement of the geological objectives.Rock mineral analysis testing and scanning electron microscopy observation were conducted using samples from Well HDCS-2,and a three pressure profile was constructed based on logging data to analyze the mechanism of wellbore instability.Improved measures for subsequent projects are suggested as follows:three-section well configuration and a high shear anti collapse drilling fluid system should be adopted,high viscosity drilling fluid(drip)can be configured for well flushing when encounteres falling blocks in the well,slow drilling and tripping,optimizing the drilling tool assembly as well as equip drilling vibration hammer during drilling in coal bearing strata.The study can provide valuable practical guidance for subsequent coalbed methane drilling in the region.关键词
煤层气井/井壁稳定/钻井复杂/钻井液/三压力剖面Key words
coalbed methane well/wellbore stability/drilling complexity/drilling fluid/three pressure profile分类
能源科技引用本文复制引用
王虎,胡永,朱迪斯..新疆尼勒克地区煤层气井钻井复杂处理技术[J].钻探工程,2025,52(2):20-27,8.基金项目
中国地质调查局地质调查项目"西部重点盆地油气地质调查与评价"(编号:DD20240044)、"重点参数井钻探及配套技术应用"(编号:DD20242400) （编号:DD20240044）
