With the developments of deep sea and marginal oil fields, FPSO has been widely used in offshore oil and gas field development.FPSO, as an oil and gas production device with both energy production and consumption, takes an economic energy distribution scheme on the premise of meeting its energy demand, which not only helps to reduce construction costs, but also helps to improve the energy efficiency of the entire system and promote energy conservation. Taking the annual total cost of energy system as the objective function, the MILP model of FPSO distributed energy system is established and solved under the conditions of energy balance and technical constraints to determine the equipment selection and capacity, and the corresponding operation plan to achieve the purpose of energy conservation and consumption reduction. The model is validated by an example of FPSO in the Bohai sea. The results show that the cost of distributed energy system can be reduced by 14.6% compared to traditional operating schemes. In addition, considering the impact of different energy prices on the economy of the system, it is found that the increase in natural gas prices has a great impact on the design and operation of DES.

The preparation of supported adsorbent Al(OH) ₃/SiO ₂ and its adsorption behavior on uranyl ions were studied.The effects of adsorbent quality,solution pH,initial solution concentration,temperature and contact time on adsorption performance were investigated.The adsorption mechanism was preliminarily studied based on adsorption isotherm,thermodynamics,and kinetics.The effects of coexisting ions and fulvic acid on the adsorption properties were also investigated.The results showed that when the adsorbent mass was 0.03 g,pH=5,initial concentration of uranyl ions was 1 mmol/L,temperature was 303 K and contact time was 60 min,the maximum adsorption capacity was 110.4 mg/g,which could be reused four times.The adsorption process of uranyl ion on Al(OH) ₃/SiO ₂ is endothermic and spontaneous.The adsorption of monolayers is dominant,the adsorption behavior conforms to the quasisecondary kinetic model,and the chemical adsorption is the rate control step.

Based on the analysis of the composition and size distribution of oily sludge taken from Xianhe block Sheng-li oil field and with dispersing agent、solidification agent and suspension agnet added, a study of developing oily sludge into high temperature profie agnet was conducted. The experimental show that at the temperature of oil reservoir, the densifying time of this kind profile agent was up to 20 h and 7% of water was separated out after setting quietly for 15 h. Therefore the requirement for profiling process field could be met. Indoor experimental results show that the break-through pressure, after oily sludge profile agent was injected and waited for 3 d, was above 7 MPa. Meanwhile the block-off ratio arrived to 99%, which remained constant after being flushed for 100 PV by 200 ℃ vapors，it's permeability increasing a little. This proves that oily sludge high temperature profile agent has so good a profiling effect that harmless processing and resource aim can be achieved. 