Systematically track, categorize, and reduce non-productive time in drilling operations. Turn NPT data into actionable insights that drive continuous improvement and cost savings.
Non-productive time (NPT) is any time during drilling operations when the rig is not advancing the well toward total depth. Stuck pipe, waiting on equipment, weather delays, wellbore stability issues, equipment failures — all of these contribute to NPT. Industry studies suggest that NPT can represent 10-30% of total drilling time, costing operators billions of dollars annually.
Despite its enormous cost impact, NPT is often poorly tracked and rarely analyzed systematically. Many operators record NPT in daily drilling reports but never aggregate it for analysis. They know NPT is expensive, but they can't quantify which types of NPT cost the most or identify trends that could prevent future incidents.
Tracking NPT in daily drilling reports creates a data graveyard. Each NPT event is documented, but the data is trapped in PDF files and can't be analyzed. When someone asks "what's our biggest source of NPT?", the answer requires manually reviewing hundreds of reports and compiling data in spreadsheets. By the time the analysis is complete, the drilling program is over and the insights come too late to drive improvement. Without systematic NPT tracking and analysis, operators repeat the same expensive mistakes across multiple wells, never learning from historical performance because the data is too difficult to access and analyze.
Effective NPT analysis requires three things: consistent categorization, centralized data storage, and analytics that turn raw NPT data into actionable insights.
Consistent categorization ensures NPT can be compared across wells, rigs, and time periods. Common categories include stuck pipe, lost circulation, weather, equipment failure, and waiting on services.
NPT should be recorded as it happens, not reconstructed days later from memory. Field personnel enter NPT events immediately with category, duration, and cost impact.
All NPT data from all wells stored in a searchable database. This enables analysis across drilling programs instead of being limited to individual wells.
Identify patterns in NPT data. Which NPT categories are most common? Are certain rigs or contractors experiencing more NPT? Are NPT rates improving or getting worse over time?
Every NPT hour has a cost. Effective NPT analysis quantifies the financial impact — both the direct cost (rig dayrate times NPT hours) and opportunity cost (delayed production).
Move beyond categorization to understand why NPT is occurring. Detailed notes, associated data, and cross-referencing with other operational parameters help identify root causes.
RigReports tracks NPT systematically as part of daily drilling operations. Company men and drilling engineers categorize NPT events as they occur, add detailed notes, and assign cost impacts. All NPT data flows into the Mi4 database where it can be analyzed across wells, rigs, and drilling programs.
1. Automated NPT Tracking
NPT is recorded in RigReports as part of the daily drilling workflow. Each NPT event includes category, subcategory, start/end time, duration, detailed description, and cost impact. The system maintains a complete NPT history for every well.
2. NPT Dashboards
Real-time dashboards show NPT metrics across drilling operations: total NPT hours, NPT as percentage of total time, top NPT categories, cost impact, and NPT trends over time. Dashboards are customizable by well, rig, contractor, or date range.
3. Trend Analysis
Analyze NPT trends to identify patterns and validate improvement initiatives. Compare NPT rates before and after implementing changes. Identify seasonal NPT patterns. Track whether NPT is improving or getting worse over time.
4. Benchmarking
Compare NPT performance across rigs, contractors, or basins. Identify top performers (lowest NPT) and understand what they're doing differently. Use benchmarking to set realistic NPT targets for future drilling.
5. Cost Quantification
Every NPT event in RigReports includes cost impact calculated from rig dayrate and NPT duration. Roll up NPT costs to see total financial impact by well, rig, drilling program, or NPT category. Quantify the ROI of NPT reduction initiatives.
Case Study: Reducing "Waiting on Equipment" NPT
A drilling contractor used RigReports analytics to discover that "waiting on equipment" represented 38% of all NPT across their fleet — costing approximately $3.2M annually. Most wait-time NPT occurred waiting for bits and BHA components. The company implemented improved supply chain processes and equipment pre-staging protocols. Six months later, RigReports data showed waiting-on-equipment NPT had decreased by 31%, saving over $1M annually.
Case Study: Stuck Pipe Prevention
An operator analyzed stuck pipe events across 50 wells using RigReports data. The analysis revealed that 72% of stuck pipe events occurred in two specific formations. Engineering investigated and found that those formations required different mud properties than their standard program. After implementing formation-specific mud programs, stuck pipe NPT decreased by 54% in subsequent wells.
Effective NPT reduction follows a systematic cycle: Track NPT consistently and categorize it accurately. Analyze NPT data to identify the biggest cost drivers. Investigate root causes of high-impact NPT categories. Implement targeted improvements. Monitor NPT trends to validate that improvements are working. Rinse and repeat. This cycle is only possible when NPT data is captured systematically and analyzed continuously — not manually compiled months after the fact.
NPT tracking in RigReports works automatically once you're using the platform for daily drilling reports. Each drilling report includes an NPT section where events are recorded with full detail. As NPT data accumulates, analytics become more powerful — identifying patterns that weren't visible in individual wells.
For operators with historical drilling data, Mi4 can import NPT data from legacy systems or Excel spreadsheets. This enables long-term trend analysis and benchmarking against historical performance.
Schedule a demo to see NPT analysis in action, or learn more about RigReports.