Fishing Decision Engine

Real-time stuck pipe diagnosis and recovery decision support for petroleum engineers. Enter your well data — get mechanism diagnosis, safe pull limits per API RP 7G, explained recommendations, and a printable professional report.

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Referenced: API RP 7G-2 · API Spec 5DP · API TR 5C3 · SPE-199573 · IADC Drilling Manual Ch. 15
464
Petroleum Calculators
176
Fishing & Stuck Pipe
40
Guided Workflows
Free
No Account Required

Live Demo: 5" S-135 DP Stuck at 12,000 ft

This is a real output from the decision engine. The same tool is available to you right now — enter your own well data and get your own report.

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What It Does

Diagnoses the Mechanism

Scores differential sticking, mechanical sticking, and pack-off based on what you can observe (circulation, rotation, mud weight, time stuck). Tells you WHY.

Calculates Safe Pull Limits

Pipe body yield per API RP 7G-2 with safety factor. Shows best/expected/worst case ranges. Hard stops if you exceed limits.

Recommends Next Steps

Every recommendation includes WHY it was triggered and the engineering REFERENCE it's based on. Not guesses — defended decisions.

Matches Similar Cases

Compares your situation to known fishing scenarios and shows historical success rates and field-proven guidance.

Plans Three Paths Forward

Simulates freeing, fishing, and sidetrack scenarios with estimated time, cost, and probability of success for each.

Generates Professional Reports

Plain-text report with well data, diagnosis, limits with API references, recommendations, assumptions, and engineering citations. Print it for the file.

Top Fishing & Stuck Pipe Calculators

Pipe Stretch / Free Point

Calculate pipe stretch and estimate free point depth from pull test data. API RP 7G method.

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Overpull vs Yield Limit

Safe overpull based on pipe grade, connection rating, and wall wear. Shows maximum safe pull.

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Differential Sticking Force

Calculate differential sticking force from mud weight, pore pressure, and contact area.

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Jar Force Estimator

Calculate required jar force and optimal jar placement based on string weight and hole angle.

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Overshot vs Spear Decision

Scored recommendation for overshot or spear based on fish condition, clearance, and bore access.

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When to Stop Fishing

Economic decision: fishing cost vs sidetrack. Break-even analysis with expected value calculation.

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ESP String Recovery

Pull forces for ESP recovery including motor, pump, cable weight, and corrosion derating.

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Kill Sheet Calculator

Complete well control kill sheet with pressures, volumes, and pump schedule.

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Browse All 464 Calculators →