The Research For Prediction Methods Of Perforation Well’s Productivity

In the optimized design of perforation completion, the effect of perforating parameters on perforation effect is the most significant Changing these parameters will determine the success of the perforation program largely.By using a semi-analytical methods, established respectively for three kinds of wells production capability model type, contains vertical wells, deviated wells and horizontal wells. Given the consideration of the complexity and inaccuracy of perforation parameters, established a variety of well-type skin calculation formula and were amended the various skin factors. According to the established models, using C Sharp to developed a integrated computing software which can calculate the productivity of this three model of perforating wells, can forecast the wells production capacity and also can sort impact of perforation parameters when it pierced or non-pierced the pollution zone. By a large number of software productivity ratio calculation, using the calculated data to drawn the graph of the relationship between the perforation parameters and oil and gas wells production capacity, and based on the data to analyzing the influence of various perforating parameters.Taking into account the effect of perforation parameters on casing strength, using Grey Incidence Analysis of the impact of the size of the perforation parameters sorted and using merits of the solution-distance method to optimal combination of perforation parameters. Finally, though the calculation about the specific formation data on one block, combination of established models and the integrated computing software, given this block a new set of perforation optimization design.