Impact of Wellbore Completion Type on Fracture Initiation Pressure in Maximum Tensile Stress Criterion Model for Tight Gas Field in the Sultanate of Oman

2015 ◽  
Author(s):  
Briner Andreas ◽  
Florez Juan Chavez ◽  
Nadezhdin Sergey ◽  
Gurmen Nihat ◽  
Alekseenko Olga ◽  
...  
Keyword(s):  
Tensile Stress ◽  
Fracture Initiation ◽  
Maximum Tensile Stress ◽  
Tight Gas ◽  
Sultanate Of Oman ◽  
Gas Field ◽  
Stress Criterion ◽  
Initiation Pressure ◽  
Maximum Tensile Stress Criterion

Failure Inception of a Spherical Contact Under Slip and Stick Conditions for Various Material Properties

2005 ◽  
Author(s):  
Victor Brizmer ◽  
Yuri Kligerman ◽  
Izhak Etsion
Keyword(s):  
Tensile Stress ◽  
Numerical Solution ◽  
Material Properties ◽  
Brittle Failure ◽  
Maximum Tensile Stress ◽  
Normal Loading ◽  
Stress Criterion ◽  
Plastic Yield ◽  
Von Mises ◽  
Maximum Tensile Stress Criterion

Failure inception of a deformable sphere loaded by a contacting rigid flat is analyzed separately for perfect slip and for full stick conditions and various material properties of the sphere. Ductile yielding and brittle failure inception of the sphere is identified by the critical interference and associated normal loading as well as the location of the first yield or failure occurrence. The analysis is based on the analytical Hertz solution for frictionless slip condition and on a numerical solution for stick condition. Failure inception is determined by using either the von Mises criterion of plastic yield or the maximum tensile stress criterion of brittle failure.

Integrated Workflow for Selecting Hydraulic Fracture Initiation Points in the Khazzan Giant Tight Gas Field, Sultanate of Oman

2015 ◽  
Author(s):  
David R. Spain ◽  
Raja Naidu ◽  
William Dawson ◽  
German D. Merletti ◽  
Rajeev Kumar ◽  
...  
Keyword(s):  
Hydraulic Fracture ◽  
Fracture Initiation ◽  
Tight Gas ◽  
Sultanate Of Oman ◽  
Gas Field

Tensile Fracture of Drawn Copper and Mild Steel

1982 ◽  
Vol 104 (1) ◽  
pp. 91-96 ◽  
Author(s):  
E. G. Thomsen
Keyword(s):  
Tensile Stress ◽  
Mild Steel ◽  
Maximum Tensile Stress ◽  
Complete Separation ◽  
Fair Agreement ◽  
Tensile Fracture ◽  
Ofhc Copper ◽  
Stress Criterion ◽  
Maximum Tensile Stress Criterion ◽  
Internal Fracture

Annealed OFHC copper and SAE 1018 steel were reduced by multipass drawing from diameters of 25.4 mm (and smaller) to 11.8 mm. A comparison was made of the experimental draw stresses and those calculated by Sachs’ and Avitzur’s equations and fair agreement exists. The drawn bars were subsequently reduced in diameter by 10 percent in order to provide gage sections and then were pulled in tension to fracture. It was found that in multipass draws some work softening occurs. The oxygen-free copper showed indications that fracture was initiated at the center of the specimen. The internal fracture grew to the near shape of a sphere and separation did not occur until the load had almost decreased to zero. The mild steel apparently also fractured in the center, but complete separation took place immediately after the tensile stress reached its maximum. The fracture theories of Latham and Cockcroft, as well as that of Chen and Kobayashi, were examined and it was found that fair agreement existed. It was also found that for these particular tests, the maximum tensile stress criterion gave more convincing results.

Analysis of the Tensile Cracking of Rock-Concrete Materials Based on Elasto-Viscoplastic Model

2011 ◽  
Vol 243-249 ◽  
pp. 4569-4575
Author(s):  
Yao Ying Huang ◽  
Hong Zheng
Keyword(s):  
Tensile Strength ◽  
Tensile Stress ◽  
Time Course ◽  
Maximum Tensile Stress ◽  
Viscoplastic Model ◽  
Stress Criterion ◽  
Plastic Yield ◽  
Concrete Materials ◽  
Stability Issues ◽  
Maximum Tensile Stress Criterion

Suppose there is time course during the cracking and deforming process, the tensile cracking of rock-concrete materials was analyzed by means of elasto-viscoplastic model and its calculation steps were illustrated as well in this paper. The expression of function Φ in elasto-viscoplastic theory was studied; what’s more, it was comparatively analyzed the tensile cracking of rock-concrete materials by elasto-viscoplastic model and the maximum tensile stress criterion respectively. There are some differences comparing with the study of plastic yield by elasto-viscoplastic model, when analyzing the tensile cracking of rock-concrete materials on the basis of elasto-viscoplastic model, the function Φ should be the stress or stress formula of the direction where the principal stress firstly reaches the tensile strength; it is proved by the example analysis that it is feasible to study the tensile cracking of rock-concrete materials by elasto-viscoplastic model and there is no iteration stability issues.

Successful Logging on Tractor in a High-Temperature Openhole Horizontal Well in a Tight Gas Field in the Sultanate of Oman

2016 ◽  
Author(s):  
Andreas Briner ◽  
Sergey Nadezhdin ◽  
Sergio Tessari ◽  
Jeroen Smit ◽  
Yazeed Busaidi ◽  
...  
Keyword(s):  
High Temperature ◽  
Horizontal Well ◽  
Tight Gas ◽  
Sultanate Of Oman ◽  
Gas Field

Unique Cost Saving Solution Applied in Tight Gas Field in Sultanate of Oman to Mitigate Corrosion and Well Integrity Damage

2017 ◽  
Author(s):  
Imran Abdul-Majid ◽  
Ajayi Ayotunde ◽  
Balushi Shihab ◽  
Shuely Abdullah ◽  
Oguni Blessing
Keyword(s):  
Cost Saving ◽  
Tight Gas ◽  
Sultanate Of Oman ◽  
Gas Field ◽  
Well Integrity
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