Research On Drilling And Completion Technology Of Deeply Sidetracking Horizontal Well

The use of Deeply Sidetracking Horizontal Well Technology can not only make the casing damage wells,shutdown wells,abandoned wells,low production wells revived,improve the exploitation efficiency of hydrocarbon reservoirs,exploit various of hydrocarbon reservoirs effectively,improve the recovery rate and production of oil and gas wells,reduce development costs,but also shorten the construction cycle,improve the overall economic efficiency.Based on the research of analysis of build-up rate and the hole trajectory control theory of horizontal wells,force analysis of drill strings in deeply horizontal wells,drilling and completion technology of deeply sidetracking horizontal wells,we formed a set of effectively sidetracking horizontal well drilling and completion program for the deep exploration area of Daqing with sidetracking drilling method of using fully recycled inclined device and high efficiency cone mill,hole trajectory control and correction technology during drilling on account of Rotary Steering System,bits and downhole power drilling tools for suitable using in deep exploration area of Daqing,complex situations and accidents prevention scheme and technical measures for deeply sidetracking horizontal well,basic completion method of tail pipe packer fracturing as the cores of it.At the same time,through the field test of drill a deeply double branches sidetracking horizontal well,the correctness of the theory presented in this paper and the reliability of the related technologies have been verified.It solves the problems of well trajectory control and drilling safety of drilling sidetracking horizontal wells in deep exploration area of Daqing.