石油钻采工艺2017，Vol.39Issue(4)：413-416,4.DOI:10.13639/j.odpt.2017.04.004
阀式连续循环钻井技术在番禺油田大位移井的应用
Application of valve-type continuous circulation drilling technology to the extended reach wells in Panyu Oilfield
田志欣 1李文金 1张武辇 2贾银鸽2
作者信息
- 1. 中海石油(中国)有限公司番禺作业公司
- 2. 深圳市远东石油钻采工程有限公司
- 折叠
摘要
Abstract
In Panyu 10-8 Oilfield, the hole section of ?215.9 mm in an extended reach well has to run through faults and its safety density window of drilling fluid is narrow (minimum 1.30～1.70 g/cm3). Besides, its angle holding section of ?311.2 mm in the upper part is long (3508 m) with high deviation angle (maximum 80°), and cutting tends to accumulate easily. The valve-type continuous circula-tion drilling technology was introduced in this paper. Its filed application results were analyzed based on case study, and the problems and improvement measures were summarized. The necessity to introduce the valve-type continuous circulation drilling technology was illustrated by analyzing the technological difficulties which were encountered during the drilling of ?215.9 mm hole section of Well PY10-8-A3 in Panyu 10-8 Oilfield. Then, the working principles and main equipments involved in this technology were introduced, and its operational characteristics and application effects were analyzed. It is indicated that the variance ratio of drilling fluid ECD (Equiv-alent circulation density) in the whole well is less than 7.6％, borehole circulation pressure is stable and average ROP is up to 21.7 m/h. Furthermore, borehole is well cleaned and faults are drilled through safely and smoothly without any leak, collapse or sticking.关键词
阀式连续循环钻井/大位移井/ECD控制/番禺油田Key words
valve-type continuous circulation drilling/extended reach well/ECD control/Panyu Oilfield分类
能源科技引用本文复制引用
田志欣,李文金,张武辇,贾银鸽..阀式连续循环钻井技术在番禺油田大位移井的应用[J].石油钻采工艺,2017,39(4):413-416,4.
