Optimal design and nonlinear dynamic characteristics of titanium /steel drill pipe composite drill string for ultra-deep drilling

被引：2

作者：

Liu, Qiang ^{[1
]}

Zhou, Bo ^{[2
]}

Chen, Feng ^{[3
]}

Li, Ning ^{[2
]}

Xie, Junfeng ^{[2
]}

Zhao, Mifeng ^{[2
]}

Di, Qinfeng ^{[4
]}

Feng, Chun ^{[1
]}

Song, Shengyin ^{[1
]}

Yin, Chengxian ^{[1
]}

机构：

[1] CNPC Tubular Goods Res Inst, State Key Lab Performance & Struct Safety Petr Tub, 89 Jinye 2nd Rd, Xian 710077, Shaanxi, Peoples R China

[2] Tarim Oil Field Co CNPC, Petr Engn Inst, Kuerle 841000, Xinjiang, Peoples R China

[3] Shanghai Univ, Sch Mechatron Engn & Automat, Shanghai 200072, Peoples R China

[4] Shanghai Univ, Shanghai Inst Appl Math & Mech, Sch Mech & Engn Sci, Shanghai 200072, Peoples R China

来源：

SCIENTIFIC REPORTS | 2023年 / 13卷 / 01期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1038/s41598-023-47156-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Titanium drill pipe have promising application prospects in ultra-deep drilling, but the nonlinear dynamic characteristics of composite drill strings are very complex. It is very important to use titanium drill pipe safely, economically, and effectively in the drilling process. In this paper, different schemes of the titanium/steel drill pipe composite drill string was designed, and the statics and dynamics characteristics of these composite drill strings were analyzed. The design scheme of titanium/steel composite drill strings were optimized by using whirling characteristics, dynamic stress and vibration acceleration. The results show that the titanium drill pipe can effectively improve the tensile allowance of the wellhead and reduce the whirling velocity, dynamic stress and vibration acceleration of the drill string. By comparing and analyzing the dynamic characteristics of 3 kinds of composite drill strings, the use of titanium drill pipe for the lower 2000 m of the 4 '' drill pipe have the smaller dynamic stress and lateral vibration, and less collision with the wellbore. Based on the analysis of vibration and dynamic characteristics, an optimal scheme of drilling operation parameters for the titanium/steel composite drill string was formed finally, which can provide guidance for the use of the drill string composed of titanium/steel drill pipe in natural gas drilling of ultra-deep well.

引用

页数：17