Modeling the Submergence Depth of Oil Well States and Its Applications

Round 1

Reviewer 1 Report

I would give a major revision for this manuscript to fix the writing structure and language. Also, please respond to my comments/suggestions below:

- Please do grammar checking, or pass this manuscript to a native English speaker. I found many grammatical errors, and it is hard for me to follow your writing.

- This manuscript is not well structured, please re-group some existing sections in between Introduction and Conclusions into 1) Materials & Methods, and 2) Results

- Line 191, What do you mean by "h<hp, and h<hp". There must be a typo, please fix it.

- Figure 1, Some texts are missing inside the boxes on the right. Please fix it.

- Figure 2-5, I know that the graphs are schematic. But, please give at least some reference values for both axes, and mention the units.

- I found that it is difficult to differentiate Capital C and small letter c in your equations. Please consider renaming them. Moreover, in petroleum engineering symbol c has been taken as compressibility.

- Equation 34, please state all assumptions and limitation for this formula. Is it applicable for different type of oil with different Gas-Oil Ratio (GOR) values?

- Fig 6, why is CPU time increasing logarithmically after sampling point 19?

 

 

Author Response

Dear Reviewer:

Thank you very much for your time involved in reviewing the manuscript and your very encouraging comments on the merits. We have included all of our responses in the attached file.

Regards,

Liumei Zhang

Author Response File: Author Response.docx

Reviewer 2 Report

In this paper, under the premise of fully considering the transformation factors of full pumping and nonfull pumping states of oil wells, the submergence depth models suitable for full and nonfull pumping wells are constructed.

The description of the units in picture 1.2,3,4 and picture 5 is wrong. I don't know in which time units we are moving. Is the time in days, hours, minutes or seconds?

I recommend filling in the values submergence deph. 

The article characterizes the relationships between the three types of oil wells and the conditions, the trends of changes of two dips in three phases (rise phase, maintenance phase and decline phase). Full-scale oil well models are defined and underpump conditions and decision criteria for the corresponding submersibles are analyzed.

the depth and the law governing the change in pumping speed are given. On this basis, the criteria for the transition of an oil well from the state of full pumping to the state of full pumping and from the state of full pumping to the state of full pumping are given. The authors state that this is the basis for practical application.

I agree with the authors, the article describes the models in detail. The models are described accurately, well and of high quality. I want to praise the authors for the description of the models. I am missing some specific measured values in the article. I think that the article would be much better if the authors added the measured values and entered the measured numbers in graphs 1, 2, 3, 4 and 5.

I recommend also using literature from other states than the US, or other European countries that deal with the issue of oil wells.

The literature used is used correctly and could be more.

The article meets the criteria for publication, but it needs to be edited.

Author Response

Dear Reviewer:

Thank you very much for your time involved in reviewing the manuscript and your very encouraging comments on the merits. We have included all of our responses in the attached file.

Regards,

Liumei Zhang

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

Dear authors,

Thanks for responding to my comments and suggestions thoroughly.

The manuscript is in much better shape now. I would suggest that Applied Sciences accepts it in present form.