| 1. | Recommended practic e for sand control technology of artificial borehole wall
人工井壁防砂推荐作法 |
| 2. | Borehole wall contact device
贴井壁装置 |
| 3. | Study of contact force between drill string and borehole wall in constant - curvature wellbores
等曲率井眼中钻柱与井壁间接触力分析 |
| 4. | Breast wall effect of double - pipe protecting borehole wall blasting and its functional mechanism
光面护壁爆破的护壁效果及作用机理探讨 |
| 5. | It showed that eccentric pressure is produced by eccentric decouple charge blasting on borehole wall
实验结果表明，偏心不耦合装药在孔壁上形成明显的偏心应力场。 |
| 6. | But in the horizontal well borehole wall , the hydraulic condttions ( boundary conditions ) is very difficult to rigorously enforce the setting
但是水平井井壁处的水力条件(边界条件)很难严格给定。 |
| 7. | According to this solution , the representative temperature response in a borehole wall can be determined , which varies with time under the condition of constant heat flux
由此得到工程上所关心的钻孔壁的代表性温度在恒定热流情况下随时间的变化。 |
| 8. | And as regards seepage question , the boundary of horizontal well is its borehole wall . the rivers in because the well is in charge of has not already been the seepage
水平井流的新模型及模拟方法就渗流问题而言，水平井的进水井壁是其边界，因为井管内的水流已不是渗流。 |
| 9. | The borehole ultrasonic imaging method can precisely reflect the smoothness of the borehole wall , and then judge the weathering degree of the rock and determine thickness of the weathering bed
摘要钻孔超声成像方法能精确地反映井壁的光滑情况，进而判断岩石的风化发育程度，确定风化层的厚度。 |
| 10. | The in - house system evaluation and field application showed that an excellent oil film for shielding temporary plugging could be formed near borehole wall and both plugging and recovering rates of permeability reached more than 90 % when the added amount of the broad spectrum oil film temporary plugging agent gpj reached 3 % ; skin factor decreased by 7 . 4 to 10 times and production increased by 1 . 82 to 2 . 96 times compared with conventional technology
结果表明，当广谱“油膜”暂堵剂gpj的加量达到3 %时，可在近井壁处形成很好的屏蔽暂堵“油膜”带，渗透率堵塞率和恢复率皆大于90 % ，与常规屏蔽暂堵技术相比，可使油层损害程度降低7 . 4 ~ 10倍，产量提高1 . 82 ~ 2 . 96倍，而且与油层渗透率和温度无关。 |
