Abstract Hydrocarbon reservoirs can be classified as unconventional or conventional depending on the oil and gas extraction difficulty, such as the need for high-cost technology and techniques. The ...

Low permeability reservoirs need fracturing to obtain productivity. The damage of fracturing fluid to reservoir is an important factor affecting productivity. Obtaining reservoir sensitivity data is ...

The technical problems of high in situ stress, high gas pressure, high gas content, and low coal seam permeability are widespread in deep soft coal seam excavation, which leads to frequent occurrences ...