Quasistatic bifurcation states of super-deep vertical drill strings

被引：8

作者：

Gulyaev, V. I. ^{[1
]}

Gaidaichuk, V. V. ^{[1
]}

Solov'ev, I. L. ^{[1
]}

Gorbunovich, I. V. ^{[1
]}

机构：

[1] Natl Transport Univ, Kiev, Ukraine

来源：

JOURNAL OF MINING SCIENCE | 2010年 / 46卷 / 05期

关键词：

Drill string; integrated calculation scheme; torsion; rotation; stability loss; forms of buckling;

D O I：

10.1007/s10913-010-0068-8

中图分类号：

TD [矿业工程];

学科分类号：

0819 ;

摘要：

The problem of buckling of a long spinning rod containing an internal flow of a homogeneous liquid and undergoing compression and tension is considered in the paper. The authors derive the resulting equations to model stability of deep drilling strings according to the integrated calculation scheme, involving the string body and its lower section. The problem-solving procedure is proposed. Typical examples are discussed. The critical values of parameters for the elastic equilibrium of the system are found. The stability loss forms are determined.

引用

页码：546 / 553

页数：8