Bending Deformation and Ultimate Moment Calculation of Screen Pipes in Offshore Sand Control Completion
, Baojiang Sun 1,2,*, Xiaohui Sun 1,2, Jiying Chen 3 and Segen F. Estefen 4,*Round 1
Reviewer 1 Report
Horizontal wells are the most promising methods of well completion, therefore, investigation of the technical condition of the screen pipes and tubes lowered into the well is certainly an urgent task. The paper contains both the results of the FEM analysis and their comparison with the mathematical calculation, which showed a very close result.
However, there are also some comments:
1. There is "Offshore Sand control completion" in the topic of the paper, but in the paper itself there is no relation to the offshore aspects.
2. It is unclear for which technological operations the research was carried out. Is it suitable only for the procedure of lowering the screen pipes into the well, or can the results of the investigation be used in the operation of wells? Then will the exposure time affect the strength characteristics of the screen pipe?
3. It would be very interesting to see in the results section of the paper what maximum angle of the well will critically affect the screen pipe (for example, for an ESP, the critical angle of curvature set is 2 degrees per 10m).
4. I also consider it advisable to focus at the beginning of the paper on the distinctive features of simulating the screen pipe and the standard pipe.
5. Figure 18 - it's better to decipher the symbols for a better perception of information.
In general, the paper is written at a fairly good scientific level.
Author Response
Please see the attached file.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Please refer to my comments in the PDF file.
There are many aspects that require your attention in a major revision.
In absence of any physical testing (material or bending tests) it is very difficult to rely on the FEA results and interpret a parametric study. You need to prove validity of the model.
Moreover, many important published knowledge in pure bending of pipelines is missed out in the introduction. The type of FE analysis and mesh sensitivity are not clearly defined.
The proposed equations fail to establish important response characteristics such as plastic moment and elastic moment (bifurcation capacity). The FEA has to have some form of wrinkling imperfection. The pipeline ovality is not addressed.
Comments for author File: Comments.pdf
Author Response
Please see the attached file.
Author Response File: Author Response.pdf
Reviewer 3 Report
1. The introduction to the article can be improved by using more recent sources on the topic of the article.
2. It is not entirely clear what initial data were used for modeling.
Galkin, V.I., Martyushev, D.A., Ponomareva, I.N., Chernykh, I.A. Developing features of the near-bottomhole zones in productive formations at fields with high gas saturation of formation oil. Journal of Mining Institute. 2021. V.249. pp. 386-392. https://doi.org/10.31897/PMI.2021.3.7
Dao-Bing Wang, Fu-Jian Zhou, Yi-Peng Li, Bo Yu, Martyushev, D.A., Xiong-Fei Liu, Meng Wang, Chun-Ming He, Dong-Xu Han, Dong-Liang Sun Numerical simulation of fracture propagation in Russia carbonate reservoirs during refracturing. Petroleum Science. 2022. V.19, Iss.6. pp.2781-2795. https://doi.org/10.1016/j.petsci.2022.05.013
Author Response
Please see the attached file.
Author Response File: Author Response.pdf
Round 2
Reviewer 2 Report
The revised manuscript may be published in JMSE.
