摘要
井下随钻压力测量系统是实现欠平衡钻井和控制压力钻井的一项关键技术,在油气勘探开发中具有重要的作用。文章主要对随钻压力测量系统进行了系统地研究,从基本结构、工作原理和现场试验应用等方面进行了分析说明。在存储式环空压力测量工具基础上,完成了系统优化设计和试验研究,成功研制出一种新型实时井下随钻压力测量系统。实时井下随钻压力测量系统由压力测量短节、MWD和地面系统组成,可实时测量环空/柱内压力、温度、定向参数和地层自然伽马参数,能监测钻井全过程井下压力变化。此外,建议开展175℃高温PWD的研制,以更好地满足现场应用需求。
Down-hole pressure-while-drilling system is a key technology for underbalanced drilling and managed pressure drilling,it plays an important role in the oil and gas exploration and development. In this paper,the pressure-while-drilling system was introduced in details as for its basic structure,working mechanism,in-situ tests and application. On the basis of memory type annulus pressure measurement tools,system optimization design and test research were completed,a new type of real-time down-hole pressure-while-drilling system,named DRPWD system,has thus been developed successfully. The DRPWD system is composed of pressure measurement sub,MWD,and surface system. Parameters such as annular pressure,pressure in pipe,temperature,directional survey and the natural gamma in formation can be measured in real time,and the changes of down-hole pressure in the whole process of drilling can be monitored with DRPWD system. In addition,high temperature pressure-whiledrilling tool( 175℃) is suggested to develop,so as to meet the field demands.
出处
《钻采工艺》
CAS
北大核心
2019年第4期1-4,6,共4页
Drilling & Production Technology
基金
国家科技重大专项项目19课题2“随钻地层评价成像测井系列”(2017ZX05019-002)
