论文详情

TZ5X-1大斜度定向井小井眼取心技术

石油钻采工艺

2002年 24卷第4期

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Title

SLIM HOLE CORING TECHNOLOGY IN THE HIGH DEVIATED DIRECTIONAL WELL TZ5X-1

作者

陈世春

Authors

Chen Shichun

单位

塔里木石油勘探开发指挥部第四勘探公司, 新疆库尔勒 841000

Organization

No. 4 Exploration Company of Tarim Petroleum Exploration and Development Bureau

摘要

在塔里木油田的大斜度、小井眼中取心还是首次。介绍了塔里木油田TZ5X-1井的取心情况,TZ5X-1井最大井斜70.5°,井眼直径152.4mm,取心地层为奥陶系灰岩和白云岩,可钻性差、易破碎。根据地质情况,优选了LC-152取心工具,与常规250P取心工具相比,有独特的内外筒扶正功能,平均取心收获率达到94.9%。

Abstract

Well TZ5X-1 is a high deviated well in Tarim Oilfield, with a max. hole inclination of 70.5°, a small hole diameter of 152.4mm.Coring in such a deviated slim hole is the first time in Tarim, and because the coring formation is located in the limestone and dolomite of the Ordovician system, the formation is friable and has poor drillability. Model LC-152 coring tool is selected for the coring job in this well, and as compared with the conventional model of 250P, it has the unique inner outer mandrel centralizing function, and the average coring recovery rate reaches to 94.9%.

关键词：

塔里木; 大斜度; 小井眼; 取心;

Keywords:

Tarim; high deviated well; slim hole; coring;

基金项目

DOI

10.3969/j.issn.1000-7393.2002.04.009