| Jingbian gas field is a typical low permeability carbonate gas reservoir.As one of the main blocks of Jingbian Gas field,well Z not only undertakes important production and development tasks,but also reflects the development status of the whole gas field to a certain extent.However,the physical properties of the reservoir in this area are poor and the heterogeneity is strong.Such geological characteristics lead to uneven reserve utilization degree,low recovery degree and uncertain reserve utilization potential.Therefore,it is of certain guiding significance for future gas field production to carry out in-depth evaluation of reserve production degree and put forward targeted means to improve reserve production.Taking well Z area as an example,this paper studies the reserve utilization degree and the countermeasures to improve reserve utilization.Firstly,the geological characteristics and fluid properties of the block are analyzed based on the actual characteristics of the block,and the geological reserves of the block are calculated based on the physical data of the reservoir,and the reserves are verified by establishing a three-dimensional geological model.Then the gas reservoir development effect is evaluated from two aspects of gas recovery rate and recovery degree by combining production dynamic analysis and productivity characteristics of gas well.Through the analysis of geological reserves,dynamic reserves and accumulative gas production parameters,the exploitation degree of small layer reserves is evaluated by three methods: gas-producing profile test evaluation method,recovery degree evaluation method and dynamic and static reserve ratio evaluation method.Then,a targeted development plan is put forward according to the current development characteristics,and the best means to improve the reserve utilization strategy is optimized by comparing and analyzing the results of numerical simulation. |
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