Unconventional resources such as shale gas have attracted increasing global attention with
great potential to bridge the energy supply chain. Yet the technical challenges and …

Hydraulic fracturing treatments are capable of enhancing the well production performance in
low-porosity and low-permeability reservoirs because of the resulted improvement in …

When cryogenic liquid nitrogen (LN 2) comes into contact with deep reservoirs, it will bring
about serious thermal damage to rock pore structure. Therefore, LN 2 pretreatment on …

Hydraulic fracturing plays significant role in enhancing production performance of low-
porosity and low-permeability reservoirs because the created hydraulic fracture (HF) can …

Cement failure has been widely reported to be one of the major causes of many catastrophic
accidents in the oil and gas industry. Lack of cement integrity and strength has been …

Perforation will damage the cement sheath around the hole in petroleum engineering,
leading to the failure of cement sealing integrity during hydraulic fracturing. This work …

It is generally recognized that the CO 2 dissolved in formation water poses a serious threat
to the cement sheath in oil and gas wells. A numerical model was developed in this study to …

Casing is inevitably damaged during perforation operation, and the perforation parameters
will have a significant impact on the degree of casing damage, which will directly affect the …

Microcracks caused by perforating operations in a cement sheath body and interface have
the potential to further expand or even cause crossflow during hydraulic fracturing. Currently …

The damage of the cement sheath is inevitable during the perforation process, and the
physical parameters of the cement sheath have a great influence on the damage of the …