| 1. | Under balance pressure drilling technology and coalbed gas development
欠平衡钻井技术与煤层气开发 |
| 2. | Zyg - 150 entire hydraulic pressure drilling machine common breakdown diagnosis
150型全液压钻机常见故障诊断 |
| 3. | Balanced - pressure drilling
平衡压力钻井 |
| 4. | Balance pressure drilling
平衡压力钻井 |
| 5. | The gas underbalance pressure drilling test for protecting reservoir was carried out in two holes
开展了2口保护储层的天然气欠平衡钻井试验。 |
| 6. | In light of the geological features of reservoirs in changqing gas field , the study and test of gas underbalance pressure drilling technology have been carried out in the field
摘要针对长庆气田储层地质特征，开展了长庆气田天然气欠平衡钻井技术研究及试验。 |
| 7. | The optimization of underbalance pressure drilling cycle medium and casing program and the complicated circumstances ( formation water out , sidewall stabilization and so on ) being able to occur in underbalance pressure drilling job were analyzed and investigated
在欠平衡钻井循环介质的优选、井身结构以及欠平衡钻井作业中有可能出现的地层出水、井壁稳定性等方面进行了分析和研究。 |
| 8. | " thirdly , the seepage monitoring data of dongzhang dam are analyzed with stepwise regression method ; the origin of some abnormal uplift pressure drill holes is studied . the factors affecting seepage are revealed and several disadvantages will be controlled
3 、应用逐步回归分析的统计方法对东张水库大坝渗流观测资料进行分析，研究了部分扬压力测孔异常情况的起因，揭示大坝渗流的变化规律，为控制不利因素实现大坝的安全运行提供有益的依据。 |
| 9. | In chapter three , in order to simulate the actual drilling fluid column pressure and to supply the extreme high pressure drilling circulating fluid for the device , the high pressure circulating fluid simulating system has been designed based on the experience of drilling fluid circulating system in the wellside . to purify the drilling fluid , the high pressure desander has been designed
第三章为模拟实际钻井的液柱压力，并为整个模拟钻井装置提供超高压循环钻井液，在借鉴了钻井现场的钻井液循环系统经验的基础上分析研究了钻井液高压循环系统，并配套设计了高压除砂器，以达到净化该系统中钻井液的要求。 |
