System and method for washing and doping oilfield tubulars

A rig, comprising:

• a fingerboard configured to store a tubular in a substantially vertical orientation;
• a racking mechanism configured to move the tubular from the fingerboard;
• and
• a washing and doping mechanism comprising:
• a bushing that is configured to receive and at least partially support the tubular from the racking mechanism in the substantially vertical orientation, wherein the bushing is at least partially conical such that the bushing is configured to contact an inner diameter of a lower end of the tubular while a gap is present beneath an outer diameter of the lower end of the tubular, and wherein the bushing is configured to rotate, thereby causing the tubular to rotate while the tubular is in the substantially vertical orientation;
• and
• a sprayer positioned radially outward from a central longitudinal axis through the bushing, the tubular, or both, wherein the sprayer is configured to spray a fluid radially inward with respect to the central longitudinal axis, such that the fluid contacts threads of the tubular, a shoulder of the tubular, or both while the tubular is in the substantially vertical orientation and rotating, and wherein the fluid comprises water, solvent, gas, pipe dope, or a combination thereof,
• wherein at least a portion of the sprayer is configured to move vertically and radially with respect to the central longitudinal axis, and wherein the movement is performed manually or automatically by a computing system.

A method for operating a rig, comprising:

• positioning a tubular that is in a substantially vertical orientation onto a bushing such that the bushing contacts an inner diameter of a first shoulder of the tubular while a gap is present below an outer diameter of the first shoulder of the tubular;
• rotating the bushing, wherein rotating the bushing causes the tubular to rotate therewith;
• spraying the first shoulder of the tubular, a second shoulder of the tubular, and threads of the tubular with a fluid using a sprayer while the tubular is in the substantially vertical orientation;
• wherein the step of spraying comprises:
• lowering the sprayer until the sprayer is positioned beneath the first shoulder;
• and
• tilting the sprayer upward such that the fluid is sprayed at an angle with respect to horizontal, wherein the angle is from about 1 degree to about 45 degrees, and wherein the first shoulder, the second shoulder, and the threads are sprayed simultaneously.

A rig, comprising:

• a fingerboard configured to store a tubular in a substantially vertical orientation;
• a racking mechanism configured to move the tubular from the fingerboard;
• and
• a washing and doping mechanism comprising:
• a bushing that is configured to receive and at least partially support the tubular from the racking mechanism in the substantially vertical orientation, wherein the bushing is at least partially conical such that the bushing is configured to contact an inner diameter of a lower end of the tubular while a gap is present beneath an outer diameter of the lower end of the tubular, and wherein the bushing is configured to rotate, thereby causing the tubular to rotate while the tubular is in the substantially vertical orientation;
• and
• a motor;
• a pinion gear configured to be rotated by the motor;
• a drive gear configured to be rotated by the pinion gear, wherein the bushing is positioned above and configured to be rotated by the drive gear;
• a load cell positioned at least partially below the drive gear, wherein the load cell is configured to measure a load that is to be used to determine whether the tubular is being at least partially supported by the bushing;
• and
• a sprayer positioned radially outward from a central longitudinal axis through the bushing, the tubular, or both, wherein the sprayer is configured to spray a fluid radially inward with respect to the central longitudinal axis, such that the fluid contacts threads of the tubular, a shoulder of the tubular, or both while the tubular is in the substantially vertical orientation and rotating, and wherein the fluid comprises water, solvent, gas, pipe dope, or a combination thereof.