Aiming at the problems of slow generation rate,low storage capacity and harsh generation conditions of CO₂ during the hydrate generation process,bimetallic Cu and Al?loaded graphene oxide materials were used as additives for the kinetic characterisation of CO₂ hydrate generation.Firstly,the prepared GO?Cu?Al material was characterized by TEM,EDS,XPS,and stability analysis.Secondly,experiments were conducted on the kinetics of CO₂ hydrate formation under 274.15 K and 3.0 MPa.The effects of different additive concentrations on the induction time,reaction time, gas consumption,and gas storage capacity of CO₂ hydrate formation were analyzed,and a comparison was made between monometallic and bimetallic supported materials.The results show that bimetallic Cu and Al can be uniformly loaded onto graphene oxide with good stability.At 274.15 K,3.0 MPa,and a concentration of 50 \mathrm{\mu } \mathrm{g} / \mathrm{g} ,the induction time of CO₂ hydrate is 85 min, the reaction time is 170 min, the gas consumption is 0.216 mol,and the gas storage capacity is 123.81 cm³/cm³.Compared with pure water system,the induction time and reaction time are shortened by about \mathrm{1}/\mathrm{4} and \mathrm{1}/\mathrm{7} respectively,and the gas consumption and storage capacity are correspondingly improved.Compared with the monometallic loading system，the maximum induction time is shortened by about \mathrm{1}/\mathrm{2} , the maximum reaction time is shortened by about \mathrm{1}/\mathrm{5} , and the gas storage capacity is significantly improved.

In order to explore the water control mechanism of buried hill crack reservoir section, taking Huizhou 26?6 condensate field as an example,the fracture gas reservoir water control physical experiment model,equilibrium gas water interface and piecewise water control experiment evaluation were established,through designing the experimental parameters,buried hill crack formation and water control process.The results show that the segmented water control can effectively prolong the water?free gas production period and delay the water breakthrough time to a certain extent.The different combination of crack and horizontal well section would induce diverse gas production characteristics.Coupling between horizontal well subsection water control and gas reservoir seepage was a complex process.The matching between blind pipe section and production section directly affects the gas well productivity.The opening degree of production section,the length and the location of blind pipe section are the main factors affecting the productivity of fractured gas reservoir.The research results will establish a sublevel water control development model for buried hill gas reservoirs and provide good technical support for rational and scientific research on water control of horizontal wells in offshore condensate gas fields.