Bastin Logan Water Services, Inc. (BLWSI) is a leader in the industry of cable tool drilling. While cable tool drilling is the oldest and most time consuming method of drilling, it has huge benefits in well production. Cable tool drilling is excellent for pin point accuracy in formation sampling and precise screen selection. Whether it be a 6-inch test well or a 30-inch production well, BLWSI sampling is second to none. Cable tool drilling is also very effective in formations where large boulders are encountered.