| 摘要 |
The invention relates to methods to induce pressure transients in fluids for use in hydrocarbon recovery operations. The invention is further characterized by inducing the pressure transients in a fluid by a collision process. The collision process employs a moving object (103, 203, 303, 403) that collides outside the fluid with a body (102, 202, 302, 402) that is in contact with the fluid inside a partly enclosed space (101, 201, 301, 401). Furthermore, the pressure transients must be allowed to propagate in the fluid. The fluid may be one or more of the following group: primarily water, consolidation fluid, treatment fluid, cleaning fluid, drilling fluid, fracturing fluid and cement. |
