Comparison

ResToolbox3 vs 石油助手

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ResToolbox3

This petroleum engineering calculator provides rapid answers for engineers in the field or office. It offers comprehensive tools for fluid properties, gas hydrate prediction, nodal analysis, production forecasting, volumetrics, and well testing, all accessible offline.

Highlights
  • Fluid properties (PVT) analysis
  • Gas hydrate prediction
  • Nodal analysis for wells
  • Production forecasting
  • Volumetric calculations
  • Well test analysis
  • Offline functionality
Features
Read full description

ResToolbox3 is a petroleum engineering calculator built for engineers who need answers fast - on a rig floor, in a meeting, or on a plane. PVT analysis, nodal analysis, gas hydrate prediction, production forecasting, volumetric calculations, and well testing, all from your iPhone or iPad. FLUID PROPERTIES (PVT) - Gas PVT: Z-factor, viscosity, compressibility, pseudo-pressure, water content, and thermal properties via 5-component Peng-Robinson EOS. Handles CO2, H2S, N2, H2, and hydrocarbon mixtures including pure and high-concentration cases - Oil PVT: Bubble point, solution GOR, formation volume factor, viscosity, and compressibility using Valko-McCain and Velarde correlations. Three solve modes with scaling factors for GOR and viscosity - Brine & Rock: Soreide-Whitson mutual solubility with Spivey brine correlations. Gas composition from Gas PVT flows through automatically GAS HYDRATES - Hydrate formation prediction via Motiee and Towler-Mokhatab correlations - Thermodynamic inhibitor dosing for MEG, DEG, TEG, methanol, and ethanol - Interactive P-T stability curves with inhibited and uninhibited envelopes - Water content mass balance between reservoir and operating conditions NODAL ANALYSIS - Gas and oil well inflow performance (IPR) with non-Darcy flow and Vogel - Outflow performance (VLP) via four methods: Woldesemayat-Ghajar, Hagedorn-Brown, Beggs & Brill, and Gray - 3x3 sensitivity matrix or real-time Explorer mode with interactive sliders - Water cut modelling with physics-based two-phase flow - Injection well support PRODUCTION FORECASTING - Single-well decline profiles: hyperbolic, exponential, and harmonic - Two-stage decline with continuous slope matching - Multi-well field development with drilling schedule, plateau constraints, and abandonment rate VOLUMETRICS - Deterministic OGIP and OOIP with combined gas/oil mode - Monte Carlo probabilistic analysis with Normal, Log-Normal, and Triangular distributions - Exceedance probability curves with P90, P50, and P10 reporting WELL TEST & TOOLS - Choke flow: gas mode (Gilbert, Norsok, TAM, SLB) and oil mode (Gilbert, Ros, Baxendell, Achong) - AGA-3 orifice metering for gas and ISO 5167 for liquid - Gas flowline pressure drop: 30-segment Darcy-Weisbach with PR-EOS properties at each segment, plus Weymouth and Panhandle B empirical methods - Petrophysics: Archie equation with density, sonic, and direct porosity methods, Pickett plot - Gas heating value and composition - Pipe capacities database (tubing, casing, drill pipe) - Unit converter with HC equivalents, reciprocal GOR/CGR, and density-gradient conversions DESIGNED FOR THE FIELD - iPhone-first interface with iPad responsive layouts - Oilfield and Metric unit systems with one-tap toggle - Share results and charts via email or messaging - Available in English, Norwegian, French, Chinese, Spanish, and Arabic - Works fully offline - no internet connection required - PVT properties flow between modules automatically All calculations use published, peer-reviewed methods from SPE literature and industry-standard references. No proprietary correlations, no curve-fitted shortcuts. Tabular data exports let you paste results directly into Excel or Google Sheets.

About

石油助手

Features
Read full description

石油助手是一款面向石油工程现场人员的专业计算工具,把现场常用的计算、换算和资料查询装进口袋,帮助钻井、录井、固井及工程技术人员快速、准确地完成日常计算。 【核心功能】 · 钻井计算 覆盖井眼容积、环空容积、起下钻灌浆、顶替排量、钻具内容积等 20 余项现场常用计算。 · 钻井液计算 密度调整、加重剂用量、降密度、混浆、固相含量、循环周等 15 项钻井液工程计算。 · 固井计算 水泥浆量、附加量、顶替液量、碰压等固井设计相关计算。 · 单位换算 压力、密度、长度、体积、温度、黏度等多类工程单位互换,支持公制与现场常用单位。 · 公式速查 内置常用工程公式与参数,随用随查,无需翻阅手册。 · 参考资料 钻井液处理剂、水泥外加剂、岩石密度、油田常用换算等查询表。 【为什么选择石油助手】 · 离线可用 —— 核心计算与单位换算无需联网,野外现场也能用。 · 即开即用 —— 首次启动自动创建账号,核心功能无需注册登录。 · 结果即时 —— 输入参数自动计算,省去手算与翻表。 · 跨设备同步 —— 可选登录后,个人数据多端同步。 【温馨提示】 本 App 计算结果仅供工程参考,最终决策应由具备资质的工程师结合现场实际条件复核后实施。 如有问题或建议,欢迎通过邮箱 info@oilany.com 联系我们。

Screenshots

ResToolbox34 screens
石油助手4 screens

Verdict

The call

The clearest difference is iOS requirement: 石油助手 at 13.0 against ResToolbox3's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ResToolbox3 ships an update every 6 days, 石油助手 every 2 weeks. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 8 level
ResToolbox3 versus 石油助手: the parameters behind the verdict, then further details
ParameterResToolbox3石油助手
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 6 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size25 MB36 MB
Age rating4+4+
DeveloperMobileReservoirSichuan Jupai Technology Co., Ltd.

In-app purchases

None

ResToolbox3

No in-app purchases

None

石油助手

No in-app purchases

Questions

Is ResToolbox3 free?
ResToolbox3 is free to download, with no in-app purchases.
Is 石油助手 free?
石油助手 is free to download, with no in-app purchases.
Do ResToolbox3 or 石油助手 have ads?
Neither ResToolbox3 nor 石油助手 shows ads.
Which is updated more often, ResToolbox3 or 石油助手?
ResToolbox3 ships an update every 6 days, and 石油助手 every 2 weeks. Most recently, ResToolbox3 was updated on October 8, 2026 and 石油助手 on October 11, 2026.

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