| 摘要 |
<p>An apparatus for in situ borehole testing having a drill string with drill pipe (17A) and drill bit (203). An upper sleeve (234A) and lower sleeve (234B) are telescopically couple together. A valve seat (336) is located in an interior passage and closes the interior passage when a valve member (330) is seated in the valve seat. A plurality of separate inflatable packers (211) are coupled to the lower sleeve (234B) and activated when the valve member is seated in the valve seat. A latching collet (219) having teeth positively interlocks with spline teeth (231A) affixed to the inner wall of the upper sleeve (234A). A hydraulic valve assembly (300) is attached to the lower sleeve and is activated by fluid in one of a plurality of separate fluid chambers (265 A, B, C) which communicate with and inflate the separate packers (211 A, B, C).</p> |
