燃气动力补贴加固器用复合火药的应用研究

Application of Composite Propellant Used in Propellant Powered Casing Patching and Reinforcing Device

研制了一种地下油水井损伤套管补贴加固器用低燃速复合火药。通过实验确定了该复合火药的两种配方,并在复合火药中加入惰性辅助增塑剂降低推进剂的燃速和燃温,测试了复合火药的燃速、感度、耐热性及热安定性。抽样实验和现场试验结果验证了该复合火药性能的适用性,计算出解卡锚定力与最小火药量的对应关系。结果表明,研制的复合火药完全满足加固器的性能要求。

A composite propellant used for downhole damaged casing patching and reinforcing device was developed. Two propellant formulations were presented based on test research. Some of inert auxiliary plasticizer were added in composite propellant so as to depress buring rate and combustion temperature. The burning rate, sensitivity, heat resistance and thermal stability of the propellant were tested. The results obtained by sample test and thousands of field test validated the applicability of the composite propellant. The relation between release strength and the minimum charge is presented. The results show that the present composite propellant can suffice the performance requirement of propellant powered casing patching and reinforcing device.