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Nodal Analysis Pressure Drop Calculations
- 2. @wikiaan
- 3. @wikiaan ∆𝑃𝑡𝑜𝑡𝑎𝑙= 𝑃𝑟 − 𝑃𝑠𝑒𝑝 Pressure Drop Changes
- 4. @wikiaan 𝑃𝑟 − 𝑃𝑠𝑒𝑝 = ∆𝑃𝑟𝑒𝑠 + ∆𝑃𝑡𝑢𝑏𝑖𝑛𝑔 + ∆𝑃𝑐ℎ𝑜𝑘𝑒 + ∆𝑃𝑓𝑙𝑜𝑤𝑙𝑖𝑛𝑒 Pressure drops in the production system:
- 5. @wikiaan Node 𝑷𝑼𝒑𝒔𝒕𝒓𝒆𝒂𝒎 ∆𝑷𝑼𝒑𝒔𝒕𝒓𝒆𝒂𝒎 ∆𝑷𝑫𝒐𝒘𝒏𝒔𝒕𝒓𝒆𝒂𝒎 𝑷𝑫𝒐𝒘𝒏𝒔𝒕𝒓𝒆𝒂𝒎 Tekanan pada titik nodal yang kita tentukan, 𝑃𝑁𝑜𝑑𝑒 di hitung dengan: • 𝑃𝑁𝑜𝑑𝑒 = 𝑃𝑈𝑆 − ∆𝑃 𝑢𝑝𝑠𝑡𝑟𝑒𝑎𝑚 𝑐𝑜𝑚𝑝𝑜𝑛𝑒𝑛𝑡 , atau • 𝑃𝑁𝑜𝑑𝑒 = 𝑃𝐷𝑆 + ∆𝑃 𝑑𝑜𝑤𝑛𝑠𝑡𝑟𝑒𝑎𝑚 𝑐𝑜𝑚𝑝𝑜𝑛𝑒𝑛𝑡 Outflow from Node Inflow to Node Pressure, 𝑃 𝑁𝑜𝑑𝑒 Flow Rate, q Nodal Analysis Approach Plot 𝑃𝑁𝑜𝑑𝑒 vs q
- 6. @wikiaan 𝑃𝑠𝑒𝑝 Choke Valve 𝑃𝑤ℎ Flow Line 𝑃𝑤𝑓 Tubing Production System Components • Reservoir • Area around the wellbore • Casing and tubing • Restrictions • Wellhead choke • Flow line • Joints, elbows, valve…etc. • Separator • Inflow • Outflow inflow Outflow 𝑃𝑟
- 7. @wikiaan 𝑃𝑠𝑒𝑝 Choke Valve 𝑃𝑤ℎ Flow Line Tubing Nodal Analysist Theory for Inflow DD DD DD DD IPR 𝑃1 𝑃2 ∆𝑝 ∆𝑞 𝑞1 𝑞2 𝑆𝑙𝑜𝑝𝑒 = ∆𝑝 ∆𝑞 𝑃𝐼 = 1 𝑆𝑙𝑜𝑝𝑒 = ∆𝑞 ∆𝑝 𝐵𝑃𝐷/𝑝𝑠𝑖 P q 𝑷𝒘𝒇 𝑷𝒓 𝑃𝑟
- 8. @wikiaan 𝑃𝑠𝑒𝑝 Choke Valve 𝑃𝑤ℎ Flow Line Tubing Nodal Analysist Theory for Inflow P q 𝑷𝒘𝒇 𝑷𝒓 Faktor yang mempengaruhi IPR: 𝑃𝑓𝑏ℎ = 𝑃𝑟 − ∆𝑃𝑟 𝑃𝑟, K, µ, Completion, Skin, 𝑃𝑏, Drainage Area Higher 𝑃𝑟 Lower 𝑃𝑟 Higher K Higher Skin
- 9. @wikiaan 𝑃𝑠𝑒𝑝 Choke Valve 𝑃𝑤ℎ Flow Line Tubing Nodal Analysist Theory for Outflow 𝑷𝒘𝒇 𝑷𝒓 Outflow 𝑃𝑁𝑜𝑑𝑒 = 𝑃𝐷𝑆 + ∆𝑃 𝑑𝑜𝑤𝑛𝑠𝑡𝑟𝑒𝑎𝑚 𝑐𝑜𝑚𝑝𝑜𝑛𝑒𝑛𝑡 𝑃𝑓𝑏ℎ = 𝑃𝑤ℎ + ∆𝑃𝑡𝑢𝑏𝑖𝑛𝑔 𝑃𝑓𝑏ℎ = 𝑃𝑤ℎ + ∆𝑃𝑓 + ∆𝑃𝑧 𝑃𝑓𝑏ℎ = 𝑃𝑤ℎ + ∆𝑃𝑓 + 𝜌 𝑔 ℎ
- 10. @wikiaan P q Nodal Analysist Theory for Outflow 𝑃𝑓𝑏ℎ = 𝑃𝑤ℎ + ∆𝑃𝑓 + 𝜌 𝑔 ℎ 𝑃 𝑧 + 𝑃𝑤ℎ VLP Faktor Yang mempengaruhi kurva VLP • 𝑃𝑤ℎ • ID, Roughness • 𝜌 𝐺𝑂𝑅, 𝑊𝑐𝑢𝑡, 𝐴𝑃𝐼 … • Well depth • Artificial Lift Higher Wcut Higher GOR Higher 𝑃𝑤ℎ Deeper well Heavier Fluid
- 11. @wikiaan 𝑃𝑠𝑒𝑝 Choke Valve 𝑃𝑤ℎ Flow Line 𝑃𝑤𝑓 Tubing Nodal Analysis Theory for Total System inflow Outflow 𝑃𝑟 P q 𝑃0 𝑞0 Inflow → 𝑃𝑓𝑏ℎ = 𝑃𝑟 − ∆𝑃𝑟 Outflow → 𝑃𝑓𝑏ℎ = 𝑃𝑤ℎ + ∆𝑃𝑓 + 𝜌 𝑔 ℎ Applying Nodal Analysis 𝑞1 - Lower Wcut 𝑞1 𝑃1 𝑞2 - Higher 𝑃𝐼 𝑞2 𝑃2 𝑞3 - Higher 𝐺𝑂𝑅 𝑞3 𝑃3 𝑞4 - Smaller Tubing ID 𝑃4 𝑞4 𝑞5 - Deeper Well 𝑞5 𝑃5 𝑞6 - Higher 𝑃𝑟 𝑞6 𝑃6 𝑞7 - Higher 𝑃𝑤ℎ 𝑃7 𝑞7
- 12. @wikiaan