scholarly journals Advanced Detection of Wellbore Failure for Safe and Secure Utilization of Subsurface Infrastructure.

2021 ◽  
Author(s):  
Edward Matteo ◽  
Donald Conley ◽  
Stephen Verzi ◽  
Barry Roberts ◽  
Casey Doyle ◽  
...  
Keyword(s):  
Wellbore Failure

Wellbore Failure During Water-Alternating-Gas Injection by Use of Flow-Stress Coupling Method

SPE Journal ◽  
2016 ◽  
Vol 22 (01) ◽  
pp. 172-183 ◽  
Author(s):  
Mahmood Bataee ◽  
Sonny Irawan ◽  
Syahrir Ridha ◽  
Hamed Hematpour ◽  
Zakaria Hamdi
Keyword(s):  
Coupling Method ◽  
Injection Wells ◽  
Iterative Coupling ◽  
Water Alternating Gas ◽  
Porosity And Permeability ◽  
Volume Method ◽  
Pressure Changes ◽  
Wellbore Failure

Summary Accurate evaluation of failure pressure is crucial in the design of injection wells. Besides, in-situ stresses play an important role in obtaining the results. Pressure and rock stresses are related together as the role of effective-stress theorem. In fact, pressure changes with stress alteration caused by change in porosity and permeability. Therefore, it should be obtained with the coupling method. Moreover, to calculate pressure, temperature, and stress in the fully coupling method, a huge matrix should be solved, and it takes long processing time to implement it. Therefore, this study developed a wellbore geomechanical model for stability during injection by use of the iterative coupling method. The processing speed was enhanced in this study because the parameters were calculated separately. The parameters of pressure, temperature, saturation, and stress were obtained for the multiphase-flow condition with numerical modeling. Furthermore, in this study, the finite-difference method (FDM) had been used to solve pressure, temperature, and saturation, whereas the finite-volume method (FVM) was applied to solve the wellbore stress. On top of that, the iterative coupling method was used to improve the accuracy of the stress results. As a result, a correction of approximately 20 psi (0.14 MPa) was noted for pressure in relation to stress, which is 1 psi (6.89 kPa). Moreover, the Drucker-Prager failure criterion was used to model the fracturing on the basis of the stress results. Other than that, sensitivity analysis on horizontal maximum (σH) and minimum (σh) stresses showed that by increasing σH, the maximum injection pressures to avoid fracturing had been reduced, whereas in the case for σh, an increment was observed.

Failure Criteria and its Application in Wellbore Studies

2016 ◽  
Vol 1133 ◽  
pp. 624-628
Author(s):  
Sonny Irawan ◽  
Mahmood Bataee ◽  
Mohammad Reza Zare
Keyword(s):  
Oil And Gas ◽  
Failure Criteria ◽  
Rock Surface ◽  
Sand Production ◽  
Injection Wells ◽  
Surface Failure ◽  
Production Wells ◽  
Oil Flow ◽  
The Stability ◽  
Wellbore Failure

This paper has reviewed the failure criteria that had been applied in the wellbore studies. Rock failure studies had applied in the wellbore and reservoir to establish the stability, which is a major problem in oil and gas wells. There problems are both in injection wells and production wells. In injection wells, fracturing is a problem and in production wells, sand production affects the oil flow rate. The stress state of the well determines the stability of the well using the failure criteria.Different failure criteria and their applications had been studied. The theory of the failure has expressed; then applied criteria, formulation and modification of different criteria is expressed for different wellbore studies. And finally the important aspects and differences in wellbore failure rather than the rock surface failure has been discussed.

scholarly journals An approach for wellbore failure analysis using rock cavings and image processing

2018 ◽  
Vol 10 (5) ◽  
pp. 865-878 ◽  
Author(s):  
Christopher Skea ◽  
Alireza Rezagholilou ◽  
Pouria Behnoud Far ◽  
Raoof Gholami ◽  
Mohammad Sarmadivleh
Keyword(s):  
Image Processing ◽  
Failure Analysis ◽  
Wellbore Failure
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