基于提高岩石穿透性能的药型罩的结构优化

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[分类号] TJ510.6

Structural Optimization of the Shaped Charge Liner to Improve Performances of Penetrating Rocks

ZHOU Ming，TIAN Bin，LI Bihong，LI Shangjie，LU KunWuhua Energy Technology Co.，Ltd.（Shaanxi Xi'an，710061）

[ABSTRACT]Inorder to improve the penetration performance of perforating chargesunder actual reservoir conditions andenhance therecoveryrateofoilandgaswells，combinedwiththerock characteristicsofsandstonereservoirs，a method combining numericalsimulationandmulti-objective geneticalgorithm wasadopted tooptimizethe structureof the shaped charge lier.The keydimensional parameters thataffectthe penetrationperformance of the shaped charge liner have ben determined to be the outer wall opening angle a ，outer vertex angle radius b ，inner vertex angle radius c ，and inner wall opening angle d .A response surface methodology was used to establish an explicit expresson for penetration depth in relation totheseparameters.Theresultsindicatethattheoptimalstructuraldimensionsfortheshapedcharge linerof the perforating charge are ： a at 40∘ ， b at 3.837 mm， c at 2.813 mm，and d at 38.7∘ . The simulation calculations and experimental testsafterstructuraloptimizationshowthatthepenetrationperformanceof theperforatingchargehasbeenimproved，with penetration performance on sandstone targets increased by 28.97% and 20.60% ，respectively. It significantly improves the penetration performance of perforating charges inrock formations，providing corrsponding technical supportforeficient development of oil and gas fields.

[KEYWORDS]perforating charge；shaped charge liner；optimized design；penetration；numerical simulation；multiobjective genetic algorithm

0 引言

射孔弹通过精准爆破为油气开采建立高效通道，它的性能直接影响单井产量和经济效益，鉴于射孔弹在地层中的侵彻深度受到具体储层岩石特性的影响，近年来射孔技术的研究与地质工程结合日益紧密，射孔弹的性能评价也由APIRP19B标准的地面测试逐渐转为更加贴近地质条件的应力岩石测试[1]。（剩余9098字）