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This passage mainly introduces about the design of liquid level and boundary measuring control at sewage re-flooding craft in small split oil field. In order to achieve automatically cutting flooding and re-flooding in the procedure in small split oil-field, the scheme is to test liquid level and boundary by using high performance to price ratio new double level gauge, to utilize electric valve instead of mechanical valve and to choose PLC to control system logic. Eventually, it will reduce the labor intensity.

We perform a first-principles simulation to research the electronic and optical properties of wurtzite Zn1-xCoxO. The simulations are based on the Perdew-Burke-Ernzerhof form of generalized gradient approximation within the density functional theory. Calculations are carried out in different concentrations. With increasing Co concentration, the band gap of Zn1-xCoxO decreases due to the shift of valence band. Besides, it is shown that the insertion of Co atom leads to redshift of the optical absorption edge. Meanwhile, the optical constants of pure ZnO and ZnCoO alloys such as loss function, refractive index and reflectivity, are discussed.

With the rolling development of Suqiao-Wenan Oilfield, the original small treatment station-Station Wen 11, cannot satisfy production requirements. It is necessary to reform and expand the crude oil storage and treatment capacity, water-injection capability and natural gas treatment capacity, on the basis of the original construction; establish new crude oil treatment, fire-fighting and heating systems, as well as supporting systems like crude oil loading and unloading, automatic monitoring and cathodic protection systems, to form a medium-sized centralized oil-gas-water treatment station with complete functions. This paper introduces design, implementation and application effect of the process automation system after Station Wen 11 undergoes reconstruction and expansion.