This paper reviews the application of microbial technology in prospection for oil and gas,in profile permeability modification,in enhanced oil recovery,in paraffin removal and inhibition,in demulsification of crude oil,and in treatment of oil slick in the sea.

According to the emulsion breaking principle of emulsifying base, and through adding chemical agents, this paper makes the processing test for the obsoleted agents with emulsifying base, and finds the suitable processing method.

This paper analyzes the damage reason and control measure to the building of diswatering riprap in the mediumduty and miniature reservoi

This paper introduces the type of liner for seepage proof canal in Harbin and analyzes the damage reason to the canals.

This paper analyzes the damage reason of earth_dam block stone slope protection and introduces the concrete slope protection design and the problems should be paid attention to in the course of the construction.

Analysis of the causes of damage in cement concrete pavement and its preventive measures;