| 1. | The evaluation of multiphase phase flow model in under - balanced drilling 欠平衡钻井多相流模型评价分析 |
| 2. | Near - balanced drilling 近平衡钻井 |
| 3. | Study on the drill - in fluid for small clearance under - balanced drilling in qianmiqiao buried hill , dagang 千米桥潜山构造油气藏成藏分析 |
| 4. | This paper introduces the development situation , basic concepts and mathematical model of bottomhole pressure about under - balanced drilling technology 较详细地论述了欠平衡钻井技术的发展概况,基本概念和井底压力的数学模型。 |
| 5. | The success of developing the drilling states monitoring system meets the need of scientific drilling including " safe , optimized and balanced drilling " 钻井状态监测系统的开发成功适应当前安全钻井?优化钻井?平衡钻井等科学钻井的需求。 |
| 6. | The dada acquisition and pressure survey methods during under - balanced drilling are researched , which provide the foundation for obtaining training samples for neural network 研究了欠平衡钻井数据采集和压力测量方法,为神经网络获取训练样本奠定了基础。 |
| 7. | Under - balanced drilling technology is an important research topic in petroleum drilling field . it is strategic to discover and protect hydrocarbon reservoir better 欠平衡钻井技术是油田钻井行业上的重要研究课题,尽快掌握和推广欠平衡技术是更好地发现油气藏和保护油气藏的战略措施。 |
| 8. | The prediction of bottomhole pressure is very important during petroleum exploring and drilling . it can provide the support and guarantee for the safe and effective performance of under - balanced drilling 在石油勘探及钻井过程中,对井底压力预测显得十分重要,它可为欠平衡钻井的安全和有效实施提供保证。 |
| 9. | Abstract : under - balanced drilling ( ubd ) technology has beenwidely used in oil drilling to improve oil recovery , minimize formation damage and eliminate drillingtroubles , while completion fluid technology is one ofthe key technologies 文摘:欠平衡钻井完井技术是保护油气层、提高采收率、克服各种钻井复杂问题的重要技术措施。 |
| 10. | The neural network prediction software is programmed by using c language . this software is applied during the real under - balanced drilling . the results show the prediction accuracy of the method above is relatively high 用c语言编制了神经网络预测软件,并且对欠平衡钻井的井底压力进行了实际预测,结果表明该方法具有较高的预测精度。 |