Pumping
What this tool does
Sacks of barite to raise a starting pit from the current mud weight to a target weight. This page says what the tool is for, in plain language. The working formula stays on the signed-in tool.
When to use it
Open Mud Weight-Up (Sacks of Barite) when this is the job: Sacks of barite to raise a starting pit from the current mud weight to a target weight. That is usually a mix, a weight-up, or a pump-output check from the pit and the pump.
Step-by-step
- Open Mud Weight-Up (Sacks of Barite) from the tool list.
- Fill Unit system, Barite grade, Current Mud Weight (W₁), Target Mud Weight (W₂) from the instrument, the drawing, or the job record. Use the unit shown beside each field.
- Fill the remaining fields the same way. Skip a field only when the screen marks it optional.
- Run Calculate when that control is on the page, then read every result row and any warning.
- Check the result against the site procedure and the manufacturer data before you change a range, a wire, a setpoint, or a weight.
- This help page is public. Opening the tool still requires a Pro session.
Inputs
- Unit system
- Imperial or metric. Pick one and enter every other field in that system.
- Barite grade
- Choose the Barite grade that matches the instrument, the drawing, or the job. Choices include Barite 4.2 (35.0 ppg), Barite 4.1 (34.153 ppg).
- Current Mud Weight (W₁)
- Current Mud Weight (W₁) is the value you read from the instrument, the drawing, or the job record. Enter it in ppg.
- Target Mud Weight (W₂)
- Target Mud Weight (W₂) is the value you read from the instrument, the drawing, or the job record. Enter it in ppg.
- Starting Pit Volume
- Starting Pit Volume is the value you read from the instrument, the drawing, or the job record. Enter it in bbl.
Results
- Result
- The reported value for Mud Weight-Up (Sacks of Barite). Use the unit printed on that row.
- Warnings
- A warning means an entry is incomplete or outside what this tool will stand behind. Recheck the inputs and the site procedure.
Common mistakes
- Using a pump factor from a different liner or a different efficiency than the pump on the job.
- Mixing the volume already in the pit with the volume you still need to move.
- Do not treat a result from Mud Weight-Up (Sacks of Barite) as a substitute for the site procedure or the manufacturer data.
Standards references
These are the standards and public references named on this tool. Clause numbers appear only when the catalog already cites them.
- Mass balance: added volume X = V × (W₂ − W₁) / (ρ − W₂), with V the starting volume
- API Spec 13A Barite 4.2 minimum 4.20 g/mL, field-rounded to 35.0 ppg on the 8.33 ppg water basis (4.20 × 8.33 = 34.986)
- API Spec 13A Barite 4.1 minimum 4.10 g/mL (4.10 × 8.33 = 34.153 ppg) when agentDensity is set to that grade
- 100 lb sack. Sacks per 100 bbl of initial mud = 1470 × (W₂ − W₁) / (35 − W₂) when ρ = 35
Offline and access
This engine can run offline after the server has cached it for the signed-in account.
A free session can read this help page. The tool card shows the name and the short summary. Opening the tool requires Pro.