Patent ID: 11952869
Assignee: SHANDONG PENGBO SAFETY AND ENVIRONMENTAL PROTECTION SERVICE CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 5:
6. The high-efficiency yield-increasing exploitation method for the natural gas hydrates according to claim 5, wherein in step (ii), during the injection of the foam cement slurry into the horizontal well section of the first horizontal well, when the foam cement slurry is found in the second horizontal well and the third horizontal well, the injection of the foam cement slurry should be stopped, and meanwhile, the foam cement slurry is removed rapidly from the second horizontal well and the third horizontal well; and then, each of the horizontal wells is shut in for 48 h, until the foam cement slurry injected into the natural gas hydrate reservoirs is cured for forming.