1.After the gas field has entered into the production declinestage , its decline law can be studied by use of the typical curve fitting method or coordinate transform method through Arps hyperbolic decline equation generally .
2.the acid content started to increase from the 3rd day after flower fading and achieved the highest till half red period and then began to decline at maturing stage;
3.In the processing of vertical wells and fractured wells, the traditional Arps decline typecurves are certified to have scientific basis and only good for rate decline analysis in late stage.
4.The proposition of assessment method and the matching methods for three point parabolic method and the three type curves for the Arps decline development model in the midlate stage development lies a foundation for the mid-late stage prediction.
5.Higher baseline ALT,lower baseline HBV DNA levels and the HBeAg decline more than 50% at the early stage of treatment(with EVR) are significant predictors of HBeAg seroconversion for Lamivudine treatment.
6.For the convenience of policy decision in the initial stage of development, the method of determining the Arps decline development model is proposed.
7.(2) the stage of the semi-artificially-controlled stream systems that were strongly influenced by human activities, the old oases were formed in the piedmont zones and the paleo-oases in the lower reaches began to decline;
8.When the HRT of two-stage biological contact oxidation is ten hours, the CODcr removal can reach 87.6 %, and the last effluent CODcr can decline bellow 100 mg/L, meeting the first-level discharged criteria in GB8978.
