石油钻采工艺2023，Vol.45Issue(4)：424-431,8.DOI:10.13639/j.odpt.202302015
基于地层溢流能量的压井方式选择方法
The method for well-killing selection considering the formation overflow energy
摘要
Abstract
The geological conditions in the deep and ultra-deep wells are complex,high temperature and pressure may cause overflow.After the overflow,the well needs to be shut down in time,and the appropriate well killing mode should be selected to re-establish the downhole pressure balance.In order to provide a scientific quantitative selection method,this paper presents a well killing selection method based on quantitative evaluation of overflow capacity.In this paper,the concept of formation overflow energy is proposed,which represents the power of overflow fluid under specific pressure differential.Furthermore,the formation overflow energy computation model is established to evaluate the formation overflow capacity quantitatively.Finally,the selection criterion of well killing method is given,with the pressure return method and the maximum allowable pressure and the critical flow overflow energy as the evaluation index.This method has been tested in the overflow well in middle Tarim region,with wide applicability and an accuracy of 93.75%,which is of guiding significance for selecting the well killing method on site and realizing safe drilling.关键词
钻井/溢流/压井方法/地层溢流能量/定量评价溢流Key words
drilling/overflow/well killing method/formation overflow energy/quantitative evaluation of overflow分类
能源科技引用本文复制引用
陶振宇,樊洪海,刘玉含,叶宇光,邓嵩,罗胜..基于地层溢流能量的压井方式选择方法[J].石油钻采工艺,2023,45(4):424-431,8.基金项目
国家重点研发计划"极地油气钻井关键技术与装备"(编号:2022YFC2806403) （编号:2022YFC2806403）
中石化胜利钻井院研究项目"深水控压钻井水力精确计算理论模型及压控特性实验研究项目"(编号:1020001-22-ZC0613-0044). （编号:1020001-22-ZC0613-0044）
