| There is a huge amount of oil and gas tight sandstone reserves in our country anddistributed widely, for the permeability of this reservoir is lower, general without fracturing,the production of oil and gas well is very low, can not meet the production of economic value.Red river filed belongs to the typical tight sandstone reservoir, and basically all wells need tobe put into production after fracturing. Currently, if the reservoir less than1500m, this filedused the quartz sand as proppant fracturing, and if it deeper than1500m, the filed useceramsite. In order to further reduce the single well investment, improve the developmentefficiency, If the reservoir is less than2500m but more than1500m in Red river filed, do aoptimization for the proppant (quartz sand stern chase ceramsite combination). According tothe geological characteristics of red river oil filed, application of numerical simulation,simulate the suitable for optimum fracturing conductivity. Considering of different closurepressure, concentration of sand-paving, the damage of fracturing fluid, the influence ofproppant embed, for oil filed to provide quartz sand and ceramsite proppant, application oflong-term crack diversion instrument system and have long-term fracture conductivitystudies.Simulated of the fracturing formation environment, for the quartz sand stern chaseceramsite combination of four kinds of scale, optimizing the best combination, and for Redriver filed fracturing provide certain theoretical basia and technical support. Based on theexisting proppant embedment and fracturing propped fracture conductivity model,establishment of a new numerical model which is suitable for Red river filed, to correction thenew mathematical model on the basis of the experimental, for the conductivity of quartz sandand ceramsite the calculated values are more accurate. The research results have certainreference value to improve the effect of fracturing stimulation and to reduce the cost. |
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