一种新型单接头油管输送射孔枪及其应用  

Development and application of a new single-adaptor tubing-conveyed perforation gun

作　　者：傅良佳[1] 张晓花[2] 耿安然[1] 赵莉[2] 

机构地区：[1]中国石化中原油田分公司 [2]中国石化集团中原石油勘探局

出　　处：《天然气工业》2013年第1期49-53,共5页Natural Gas Industry

摘　　要：普光气田属于典型的"压力高、温度高、气体高含硫化氢"三高气田,且气井井深、井斜角大、射孔段长,传统射孔枪已无法满足现场需要,急需研制新型射孔枪。为此,在传统射孔枪研制技术的基础上,通过严格的枪身材质优选、规格确定、弹架结构和传爆接头设计以及导爆索优选,经过地面试验,成功地研制出了一种钢级TP110S,外径114mm,壁厚11mm,耐压120 MPa、耐温140℃以上的弹架紧固式单接头油管输送射孔枪。与传统射孔枪相比较,该新型射孔枪高抗硫、耐温高、抗压、抗拉、抗挤,在结构上采用弹架紧固式结构,使得弹架与枪体基本同轴,枪内炸高一致,提高了射孔的稳定性。目前该新型射孔枪已在普光气田现场多口气井投产中得到应用,射孔成功率达100%,且气井的产气量与预测结果一致,表明射孔枪设计合理、性能可靠,可在类似气田的开发中推广使用。The Puguang Gas Field is characterized by high pressure, high temperature and high content of H2S, and gas wells there commonly have great depth, high deviation angle and long perforation section. Traditional perforation guns can not meet the requirements of field operation, thus it is urgent to develop a new perforation gun. Based on absorbing the merits of traditional perforation guns and through strict selection of material, specification of gun body, design of bullet hanger structure and detonation sub, and optimization of detonation cord, a new single adapter tubing-conveyed perforation gun is successfully developed of bullet hanger tightened type. It is manufactured with TP110S steel and has an outer diameter of 114 mm, wall thickness of 11 mm, pressure resistance over 120 MPa, and temperature resistance over 140 ℃. Compared with traditional perforation guns, the new gun with strong stability also has a high resistance to H2S, temperature, pressure, tension and compression. And its stability gets strenghthened by the fastening structure of the gun carrier, which is almost at the same coaxial line with the gun body. It has been successfully applied in several gas wells in the Puguang Gas Field and the successful rate of perforation operation is 100%. The good consistency between the predicted and actual gas rates reveals that the design of the new perforation gun is rational and its performance is reliable.

关 键 词：硫化氢 长井段 弹架紧固式 单接头油管输送射孔枪 设计 使用 普光气田 四川盆地 

分 类 号：TE257.1[石油与天然气工程—油气井工程]