石油钻采工艺2025，Vol.47Issue(5)：554-561,8.DOI:10.13639/j.odpt.202506018
连续油管超小井眼短半径裸眼侧钻水平井工艺
Process practice of ultra-small borehole short-radius barefoot sidetracking horizontal wells with coiled tubing
马建辉 1于俊杰 2刘杨 2李栓 2文涛 3李双见 2朱建建 2索海钊2
作者信息
- 1. 中国石化经纬有限公司,山东 青岛 266000
- 2. 中国石化经纬有限公司胜利定向井公司,山东 东营 257064
- 3. 中国石化经纬有限公司江汉测录井分公司,湖北潜江 433100
- 折叠
摘要
Abstract
Coiled tubing short-radius casing sidetracking technology has achieved breakthroughs in engineering applications.However,barefoot sidetracking and directional drilling still face the following trajectory control bottlenecks:the lack of a coiled tubing barefoot sidetracking process,insufficient optimization of stabilization drilling tool combinations,and limited tool face control for measurement while drilling(MWD)in ultra-small boreholes.This study conducted an engineering test at a standard well site in the Jianghan Oilfield old district.Through barefoot sidetracking,directional deviation building,and horizontal section stabilization drilling using a slickline Ø60.3 mm coiled tubing in a Ø110 mm borehole,three key technical parameters were systematically verified:The deviation building characteristics and inclination increase control laws of a single-bend downhole motor(Ø89 mm,bend angle 2.5°)under conditions of ultra-thin cement plugs and short radius;The stabilization and inclination reduction performance of a micro-bend angle(0.75°)downhole motor;The synergistic control capability of a Ø42 mm MWD and a Ø79 mm indexing tool(a tool used to control the rotational angle of the downhole tool face)in a solid-free saturated salt cement slurry.Through the accumulation of engineering data from 211 m of barefoot drilling,three innovative processes were developed:The coiled tubing barefoot sidetracking process,the slickline MWD and control process,and the trajectory control process with a total angle change rate≥28(°)/30 m.The data and experience from this practice provide a decision-making basis for the industrial application of ultra-small borehole coiled tubing short-radius sidetracking horizontal wells,effectively supporting the economic development of old oilfields.关键词
连续油管/超小井眼/短半径/裸眼侧钻/随钻测量/轨迹控制Key words
coiled tubing/ultra-small borehole/short radius/barefoot sidetracking/measurement while drilling/trajectory control分类
石油、天然气工程引用本文复制引用
马建辉,于俊杰,刘杨,李栓,文涛,李双见,朱建建,索海钊..连续油管超小井眼短半径裸眼侧钻水平井工艺[J].石油钻采工艺,2025,47(5):554-561,8.
