Abstract: A valve assembly and a plunger pump are disclosed. In one example, the valve assembly includes a valve seat, a valve body, valve rubber, and a wear-resistant ring, where the valve seat is provided with a guide cavity, the valve body includes a guide claw and an attachment disc which are fixedly connected, the guide claw is in sliding fit with the guide cavity, the attachment disc is provided with a mounting groove, the valve rubber is embedded in the mounting groove, the wear-resistant ring is made of a wear-resistant material, hardness of the wear-resistant ring is greater than hardness of the valve seat, the wear-resistant ring and the valve seat are relatively fixed, and in a case that the valve assembly is in a closed state, the attachment disc and the valve rubber are both attached to a surface of the wear-resistant ring.

Abstract: The present disclosure relates to the technical field of well site energy management, and in particular to a comprehensive energy management system and method for the fields of oil and gas field drilling and oil and gas field yield increase business. The energy device adopted by the application combines all power energies on site, thus realizing an integrated centralized control strategy of energy. The purpose of strong resistance to load fluctuation, and peak storage and valley release of electric energy is achieved. A cloud server is adopted to seamlessly combine site with local control, so that manual remote operation is realized. The problem that personnel cannot reach the site to handle faults, and consequently, loss is caused due to shutdown is solved. Limited resources are reasonably utilized to the greatest extent.

Abstract: Methods, apparatuses, and devices for processing a service, including computer programs encoded on computer storage media are provided. One of the methods includes: receiving an application sent from a user terminal of a first user comprising a commitment; verifying a credit value of the first user; in response to the credit value reaching a predetermined credit value, accepting the application of the first user; and in response to the first user failing to fulfill the commitment, triggering a balance compensation process to cause the first user to send a balance resource to the second user by a deadline.

Abstract: Methods, apparatuses, and devices for processing a service, including computer programs encoded on computer storage media are provided. One of the methods includes: receiving an application sent from a user terminal of a first user comprising a commitment; verifying a credit value of the first user; in response to the credit value reaching a predetermined credit value, accepting the application of the first user; and in response to the first user failing to fulfill the commitment, triggering a balance compensation process to cause the first user to send a balance resource to the second user by a deadline.