Effective methods for enhancing production capacity include hot water injection, wellbore heating, and reservoir reconstruction, which can eliminate secondary hydrates.

To maintain wellbore stability, it is recommended that drilling operations align with the minimum horizontal stress or be perpendicular to the maximum horizontal stress.

The study also reveals that secondary hydrates typically form in the near-well area, characterized by rapid formation rates and slower decomposition rates, which can block seepage channels.

A numerical simulation model was developed to analyze the impact of various sealing distances on hydrate dissociation and methane production dynamics.

Additionally, a new nonlinear creep constitutive model was developed to effectively capture the creep properties of HBSS, aiding in the assessment of risks related to reservoir deformation and stability.

Natural gas hydrates (NGH), primarily composed of methane and water, are considered a promising clean energy source, with reserves estimated to exceed the carbon content of proven fossil fuels.

During a 1400-day production simulation, gas production peaked around day 1000, with approximately 80% of hydrate decomposing over the period.

However, the development of NGH faces significant challenges, including issues related to pore water intrusion and heat loss, which limit extraction efficiency.

The risk of wellbore instability increases significantly due to the decomposition of hydrates under drilling conditions, necessitating careful management.

The findings indicate that long-term strength of hydrate-bearing sandy sediments (HBSS) increases with hydrate saturation, highlighting the importance of considering strength loss due to hydrate decomposition in development plans.

A recent study examines the impact of drilling fluids on hydrate-bearing formations during drilling operations, utilizing data from China's Shenhu area.

This research provides a theoretical basis for enhancing NGH extraction techniques, which are crucial for energy security and reducing greenhouse gas emissions.