拨叉式螺杆高压喷射钻井技术研究  

STUDY ON SHIFT FORK TYPE SCREW HIGH PRESSURE JET DRILLING TECHNOLOGY

作　　者：顾洪成 赵健[2] 梁明月 郭文清 吴琪 

机构地区：[1]胜利石油工程有限公司海洋钻井公司 [2]中国石油大学(华东)石工学院 [3]胜利石油工程有限公司钻井工程技术公司

出　　处：《钻采工艺》2015年第3期33-36,10-11,共4页Drilling & Production Technology

基　　金：中国石油"十二五"重大科技专项钻井新技术新方法研究项目(编号:2011A-4201);山东省自然科学基金重点项目(编号:ZR2010EZ004)研究成果

摘　　要：为提高钻井机械钻速,通过充分利用钻井液的水力能量,提高井下钻头的射流压力,井下螺杆增压装置以机械螺旋换向代替了以往井下增压装置的液压转换等结构,具有结构简单、效率高等优点。为此,在分析现有井下螺旋斜槽式增压器的基础上,提出了拨叉式螺杆高压喷射复合钻井提速技术,设计出了一种双拨叉式增压换向机构,优化了螺杆马达参数并提出改进方案,最后通过现场试验验证了改进设计的正确性,改进后的井下增压装置在现场相同钻进条件下试验,同邻井同井段平均机械钻速比较,钻速提高了39.72%。Oil and gas drilling engineering practices have shown that the ROP can be greatly enhanced by using the hydraulic energy of drilling fluid and increasing the water jet pressure of the drilling bit. So,the hydraulic transformation part was replaced by the mechanical screw structure in the new downholescrew pressurization device,which had the features of simple structure and high efficiency. Based on the analysis of the ordinary down hole screw pressurization device,a new shift fork type screw high pressure jet drilling technology was put forward and a kind of double shift fork reversing structure was designed,and the screw motor parameters were optimized. Lastly,the design was verified by the field test,and the ROP had increased by 39. 72% with the modified down hole screw pressurization device.

关 键 词：井下增压 钻井 提速 结构设计 现场试验 

分 类 号：TE242.9[石油与天然气工程—油气井工程]