天然气工业2000，Vol.20Issue(4)：40-43,4.
三牙轮钻头水力系统的研究与应用
STUDY AND APPLICATION OF THE HY DRAULIC SYSTEM OF THREE ROLLER BIT
摘要
Abstract
The hydraulic system of three roller bit is an important component in the design of the bit structure. Whe ther the design of the hydraulic system is rational will directly influence the service life and penetration rate of the bit. In view of the problems that the nozzle case and oil-storage cavity were damaged by the fluid in the chamber, ariscd in the application of three roller bit in about ten years, the hydraulic system of three roller bit of φ215.9 mm has been completdy studied by use of the experimental method with full gauge bit, finding out the cause and affecting factors that the bit is damaged by the fluid in the bit′s chamber. On the basis of theoretical study and ex periment,a double-nozzle bit of 215.9 mm with new hydraulic system has been designed and an industrial test in borehole has been made in Karamay oil field in Xinjiang. For six tested bits, under same conditions, the average penetration rate has been raised by 42.48% and the average headway per drill bit has in creased by 23.1%. The experiment evaluation criterion,content and method for the hydraulic system of three roller bit are put forward also,furnishing a theoretical basis for the design and e valuation of the bit with new-type hydraulic system.关键词
牙轮钻头/水力系统/流体流动/特性/研究/设计/应用/评Key words
Roller bit/Hydraulic system/Fluid flow/Characteristic/Research/Design/Application/Evaluation分类
能源科技引用本文复制引用
熊继有,廖荣庆,孙文涛,徐显广..三牙轮钻头水力系统的研究与应用[J].天然气工业,2000,20(4):40-43,4.基金项目
本文系原中国石油天然气总公司"八五"920053项目，"油气藏地质及开发工程"国家重点实验室开放基金资助项目(PLN9709)。 （PLN9709）
