| String name | Completion string for pickling or acidifying | Completion string for acid pressure | Sand fracturing completion string |
| Transforming displacement | Meet the requirements of transformation displacement within 3.0 m3/min | Meet the requirements of 5 - 7 m3/min transformation displacement | Meet the requirements of 8 - 10 m3/min transformation displacement |
| Sphere of application | Small pickling or acidification in reservoirs with established fractures can result in wells with industrial output potential [2] [3] . | Large hydraulic fracturing in reservoirs with highly developed fractures produces wells with industrial production capacity more. | Sand fracturing in reservoirs with less developed fractures is the only way to get wells with industrial output potential. |