**6. Conclusions**

The following conclusions can be drawn in this study:


#### **7. Research Limitations**

This paper may be deficient in several aspects. The horizontal wells involved in this study were all located in the reserve enrichment zone of S2 in Block M, with similar reservoir physical properties and fluid properties; hence, the influence of reservoir physical properties and fluid properties was ignored when constructing the CPII. Meanwhile, the effect of interwell interference was ignored in this paper because of the short production time of Block M. It is recommended to consider these indicators when using the proposed method to analyze the performance of fracturing technologies in similar reservoirs. Secondly, some viewpoints in this paper need to be further quantitatively demonstrated using more samples. For instance, the fixed-string hydra-jet multistage fracturing technology is undoubtedly less applicable in this block due to the limitation of displacement and number of fracturing stages, but its performance needs further quantification, since the two horizontal wells involved in the analysis were affected by horizontal section length, tubing pressure, and type of fracturing technology. Moreover, the applicability of fracturing technologies in Class I horizontal wells was verified in this paper, while the applicability in Class II and Class III horizontal wells needs to be further confirmed with more samples.

**Author Contributions:** Conceptualization, L.W.; methodology, J.Z. and L.W.; software, L.W. and Y.Y.; validation, L.W., Y.Y. and S.W.; formal analysis, J.Z.; investigation, L.W. and Y.Y.; resources, J.Z. and D.J.; data curation, L.W., Y.Y. and J.Z. writing—original draft preparation, L.W.; writing—review and editing, S.W. and J.Z.; visualization, L.W. and J.Z.; supervision, S.W.; project administration, D.J.; funding acquisition, D.J. All authors have read and agreed to the published version of the manuscript. **Funding:** This work was supported by the National Natural Science Foundation of China (Grant Number 52074345).

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Conflicts of Interest:** The authors declare no conflict of interest.
