Evaluation of Methods to Alleviate Corrosion Fatigue in Type 135 Drill-Pipe Steel for Offshore-Drilling Applications

2009 ◽  
pp. 241-241-17
Author(s):  
DE Pettit ◽  
DW Hoeppner ◽  
WS Hyler
Keyword(s):  
Corrosion Fatigue ◽  
Pipe Steel ◽  
Drill Pipe ◽  
Offshore Drilling ◽  
Evaluation Of Methods

The Development and Experimental Study on High Strength and Toughness Drill Pipe Steel

2011 ◽  
Vol 287-290 ◽  
pp. 1024-1032
Author(s):  
Feng Hu ◽  
Li Hong Han ◽  
Hang Wang ◽  
Yao Rong Feng ◽  
He Lin Li
Keyword(s):  
Electron Microscopy ◽  
Yield Strength ◽  
Pipe Steel ◽  
Drill Pipe ◽  
Control Process ◽  
High Strength ◽  
Alloy Element ◽  
Deep Wells ◽  
Alloy Carbon ◽  
The Impact

With the development of oil industry, the high strength-toughness drill pipe suited to the task of sour environment and ultra deep wells would be considered more and more important. A new drill pipe steel, which was designed with the proper decrease of C content and increase of Cr, Ni, Mo, Nb and V alloy element, was developed and studied in this study. Large deformation hot rolling technology was used to obtain ultrafine grains microstructure. The results showed that the yield strength of this new drill pipe steel had reached 150ksi with the impact toughness more than 150J, which can perfectly meet the “leak-before-break” crack principle. The new low-alloy carbon steel drill pipe in the controlled yield strength grade 150ksi showing excellent sulfide stress cracking resistance and strength-toughness have been developed. Based on the observation of scanning electron microscopy and transmission electron microscopy, several kinds of carbide particles including (Nb, Mo, V)C with nanometer scale, were distributed in tempered sorbite matrix. The objective of this work was to study the relationship between carbide precipitation and strength-toughness by optimizing element design, thermo mechanical control process and heat treatment of drill pipe steel.

Is Titanium Drillpipe Applicable to Offshore Drilling? A Question from a Corrosion Fatigue Perspective

SPE Journal ◽  
2021 ◽  
pp. 1-17
Author(s):  
Hao Yu ◽  
Yisheng Mou ◽  
Zhanghua Lian ◽  
Qiang Zhang
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Fatigue Life ◽  
Service Life ◽  
Corrosion Fatigue ◽  
Field Application ◽  
Drilling Mud ◽  
Offshore Drilling ◽  
Rotary Drilling ◽  
Short Period

Summary In offshore horizontal well drilling, one of the major challenges is the large dogleg severity in the buildup section due to the shallow depth of reservoirs. In such a case, the drillstring has to bend itself to fit the borehole trajectory and suffers greatly from the high alternating stress while rotary drilling. This could lead to fatigue fracture of the drillpipe within a short period. The corrosion from drilling mud may exacerbate the failure risk. Titanium alloy, as a new drillpipe material, has the characteristics of excellent corrosion resistance and low elastic modulus, which can theoretically extend the fatigue life. To study the performance of titanium alloy drillpipe quantitatively, titanium alloy material, and G105 steel of the same grade are compared to obtain the microscopic characteristics and macroscopic properties through experimental tests. Moreover, the mechanism of passive film formation of the two materials is analyzed in the corrosion fatigue (CF) environment. Then, the experimental results are extended to modeling the actual drillstring assembly and simulating its service life in the field practice of offshore drilling. Our numerical results indicated that the titanium alloy drillpipe has much better corrosion resistance but only half the stress level of G105 steel under the same dogleg severity and axial force, which makes its fatigue life over 23 times longer. Eventually an economic appraisal is given by considering the full-service life of the drillpipe. The research results of this paper can provide a detailed theoretical basis and reference for field application and can popularize the use of titanium alloy drillpipe.

A method of calculating the life of drill pipe joints on the basis of corrosion fatigue tests

1984 ◽  
Vol 20 (2) ◽  
pp. 193-195
Author(s):  
V. I. Pokhmurskii ◽  
E. I. Kryzhanovskii ◽  
V. M. Ivasiv ◽  
�. G. Poddubnyi ◽  
M. Ya. Yanyshivskii
Keyword(s):  
Corrosion Fatigue ◽  
Drill Pipe ◽  
Fatigue Tests ◽  
Pipe Joints

Research On The Requirement Of Impact Toughness For Petroleum Drill Pipe Steel Used In Critical Sour Environment

2011 ◽  
Vol 284-286 ◽  
pp. 1106-1110
Author(s):  
Li Hong Han ◽  
Feng Hu ◽  
Hang Wang ◽  
Yao Rong Feng ◽  
He Lin Li
Keyword(s):  
Impact Toughness ◽  
Statistical Data ◽  
Pipe Steel ◽  
Drill Pipe ◽  
Curvature Effect ◽  
Leak Before Break

This paper presents the determining method of impact toughness of drill pipe steel used in critical sour environment. Leak-Before-Break fracture principle was adopted to deduce the requirement of drill pipe with different strength grades for impact toughness, which considered both factors, such as geometry size and curvature effect. The loss law of impact toughness was also experimentally measured which could act as a good supplement for Leak-Before-Break fracture principle. Statistical data revealed that this requirement of drill pipe steel for impact toughness could be fully realized through current industrial ability.

Influence of H2S Corrosion on Rotating Bending Fatigue Properties of S135 Drill Pipe Steel

2017 ◽  
Vol 71 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Bensheng Huang ◽  
Jiang Yang ◽  
Hui Zhang ◽  
Ge Liu ◽  
Yongbin Chen ◽  
...  
Keyword(s):  
Pipe Steel ◽  
Drill Pipe ◽  
Fatigue Properties ◽  
Bending Fatigue ◽  
H2s Corrosion ◽  
Rotating Bending Fatigue ◽  
Rotating Bending ◽  
S135 Drill Pipe Steel

Simulated Research on Hot Forming Mechanism of Sour Service Drill Pipe Steel

2011 ◽  
Vol 704-705 ◽  
pp. 266-272
Author(s):  
Mei Juan Hu ◽  
Peng Wang ◽  
Li Hong Han ◽  
Xin Li Han
Keyword(s):  
Constitutive Equation ◽  
Hot Deformation ◽  
Pipe Steel ◽  
True Strain ◽  
Drill Pipe ◽  
Peak Stress ◽  
True Stress ◽  
Experimental Results ◽  
Strain Rates ◽  
Sour Service

The dynamic mechanical behaviors of as-cast sour service drill pipe steel under development during hot deformation were studied in this paper by using Gleeble-3500 thermal mechanical simulator. The compressions were carried out at the temperature of 900°C, 1000°C, 1100°C, 1200°C and strain rates of 10s-1, 1s-1and 0.1s-1. The compress degree was about 70%, and then the maximum true strain for each specimen was 1.2. The experimental results show that the peak stress was related to the compression temperatures and the strain rates. Through respectively analyzing and studying the true stress-true strain curves, the hot deformation constitutive equation and the deformation activation energy were obtained by regression analysis. The evolution of microstructures at various strain rates and temperatures was discussed. Experimental results can provide scientific basis for analyzing the hot deformation processes and controlling quality. Keywords: sour service drill pipe, hot compression, true stress-true strain, constitutive equation, microstructure

Sign in / Sign up

Export Citation Format

Share Document