Abstract: A high-efficiency yield-increasing exploitation method for natural gas hydrates includes steps of drilling of natural gas hydrate reservoirs along horizontal wells, seepage increasing by fracturing for fracture forming and stability improvement by grouting in the natural gas hydrate reservoirs, and yield improvement by combined exploitation of depressurization of the horizontal wells and heat injection; according to the present invention, drilling time is shortened by rapid drilling along the horizontal wells, the permeability of the reservoirs can be effectively improved by fracturing for fracture forming, the stability of the reservoirs can be improved by injecting foam cement slurry into the reservoirs, and the yield of the natural gas hydrates can be improved by the combined exploitation method of depressurization of the horizontal wells and heat injection.

Abstract: A high-efficiency yield-increasing exploitation method for natural gas hydrates includes steps of drilling of natural gas hydrate reservoirs along horizontal wells, seepage increasing by fracturing for fracture forming and stability improvement by grouting in the natural gas hydrate reservoirs, and yield improvement by combined exploitation of depressurization of the horizontal wells and heat injection; according to the present invention, drilling time is shortened by rapid drilling along the horizontal wells, the permeability of the reservoirs can be effectively improved by fracturing for fracture forming, the stability of the reservoirs can be improved by injecting by the combined exploitation method of depressurization of the horizontal wells and heat injection.

Abstract: The present disclosure provides a network call method, terminal, and server. The method includes: displaying a scenario interface for a social application group; displaying a first list of user identifiers when an instruction for initiating a specified call is received; determining, according to a selection operation in the first list of user identifiers, identifiers of second users; sending a network call request to a social application server, the network call request comprising an identifier of the first user logging in at the first terminal locally and the identifiers of the second users, so that the social application server creates a virtual group, and adds, to the virtual group, the first terminal and second terminals corresponding to the identifiers of the second users accepting call invitations; and performing a network call in a call interface for the virtual group.

Abstract: The present disclosure provides a network call method, terminal, and server. The method includes: displaying a scenario interface for a social application group; displaying a first list of user identifiers when an instruction for initiating a specified call is received; determining, according to a selection operation in the first list of user identifiers, identifiers of second users; sending a network call request to a social application server, the network call request comprising an identifier of the first user logging in at the first terminal locally and the identifiers of the second users, so that the social application server creates a virtual group, and adds, to the virtual group, the first terminal and second terminals corresponding to the identifiers of the second users accepting call invitations; and performing a network call in a call interface for the virtual group.