A new method for estimation formation radial effective permeability based on wireline formation testing
Testing interpreting is the most directly method to get formation radial effective permeability,but its testing cost is relatively expensive.The paper proposed a new method to get the permeability by combining wire-line formation testing(WFT)to nuclear magnetic resonance(NMR)logging,based on the new method,permeabil-ity from NMR logging is calibrated by several point horizontal permeability from WFT,and then,the average per-meability can be obtained by calculating average scaled NMR logging permeability,The average permeability shows both formation vertical heterogeneity and WFT effectiveness.The method had been applied in field testing,and the permeability from the method has higher precision than DST test,as well as,its cost is very low.
In the pilot study on the treatment of polyvinyl chloride centrifugal mother liquid wastewater by using a combination of MBR and RO,the removal efficiency of organics and suspending solid together with the capability to resist the impact of the system were researched.The changes of the biological phase in the MBR and the membrane fouling of both membranes were observed.The experiment results show that the total removal efficiency of COD was over 95%,the effluent less than 40 mg/L can meet the requirement of wastewater discharge standard.Furthermore,the effluent of the MBR can reach the polymerization reuse water standard with a water recovery more than 70% after being treated by antiosmosis,Ion exchange or EDI.Film properties are in a good state during the experiment.