| 摘要 |
FIELD: sea wells drilling technologies. ^ SUBSTANCE: method includes consecutive lowering and expansion of base column pipes, placing lower portion of column into rocks of sea bottom for depth, excluding toppling of column, and fixing platform with drilling mechanisms on top of it, while column is mounted of upper and lower sections, and placing of column for required depth into rocks is performed by means of strikes from ring striker against ring anvil. Lower section is mounted of 3-5 evenly spaced hollow beams, rigidly connected by upper ends to ring anvil and placed at distance from base column axis, exceeding distance, at which hollow pipes placed in bottom may disrupt physical and mechanical properties of soils to be examined later during drilling. First, starting from anvil, pipe of upper section is connected to ring anvil of lower section with combination of vertical axes, and strikes by ring striker are performed via ring anvil concurrently against all hollow supports. ^ EFFECT: higher efficiency, higher speed and reliability. ^ 3 cl, 3 dwg |
