| 摘要 |
<p>A tool for cleaning oil, gas, and water well wall casing is disclosed. The cleaning tool includes a cylindrical member (18) and a helical swath of scratching elements (24) affixed to the side walls of the cylindrical member positioned for scouring the interior wall of the casing. Also included in the side walls of the cylindrical member is a helical channel (32) adjacent to the swath of scratching elements. Typically, a workstring (38) maneuvers the tool through the casing under mechanical force. Fluid is circulated through the channel (48) of the tool to carry to the surface the loosened debris scoured from the interior wall of the casing. A method of cleaning a well casing is also disclosed. The method includes the use of a tool with scratching elements and flow channels, which tool can be used either with or without cleaning solvents.</p> |
