Gaeatools is a set of programs that facilitate prospect appraisal. The programs are simple and can not compete with the many highly professional solutions that are available at the moment, such as the geochemical modeling and sophisticated statistical analysis programs. However they may be useful as a "light" introduction to solving the many small estimation problems that arise in the context of prospect appraisal and resource estimation. For instance: correction of the TOC, Total Organic Carbon for a sourcerock that is already mature, or a simple method to study the history of trap capacity in time for a prospect, etc.

The programs are being updated to function under Windows 10 using the VB.net development tool. I use the software for my consultancy and training.

GAEA is working on the following software for functioning in a **.net** environment of Windows10, although not all yet programmed for the .net framework.

Underlined program names indicate that they have been updated to the ".net" system of Windows.

**Gaeapas**, the exploration prospect appraisal program, but also useful in estimating reserves in unappraised discoveries.See the screenshots of input and output here

**Gaeatools**, a set of small programs to assist in the preparation for prospect appraisal input, or for resource estimation. These comprise:a prospect appraisal program with simplified input for one single reservoir.__VOLCALC__**Geological programs**a more complete program for prospect appraisal with a bayesian approach to the petroleum system variables.**CTRM**, estimating subsurface temperature from well-log headings (BHT's).**GEOHIST**, subsidence graph and maturity estimation, estimation of TOC from wireline logs, depth, resistivity, sonic or density.__SOURCELOG__**TOCORIG**, correction of TOC values to immature state for maturity, with regard to type of SR.**TRAPHIST**, estimating the geological history of the trap capacity. A simple one-dimensional calculation referring to the changes in vertical closure.**VARIOGRAM**, a simple variogram program.

*Calibration programs***REGRESSION**, Program for single variable analysis and multiple regression/discriminant analysis.**DISCRIM**, discriminant analysis for two classes. This technique can be used to obtain bayesian estimates of chance factors.

*Economic evaluation*a program for merging and addition of probabilistic resource estimates__MAD__**PRODPROF**, program to forecast a production profile on basis of Ultimate recovery. For a single or a set of discoveries. Deterministic based on a single u.ltimate recovery volume, Probabilistic production forecasting for oil and gas.__PRODCASTING__**EEC**, Expectation of Exploration Costs. The present value of an uncertain exploration program for use in Expected Monetary Value (EMV) calculation., Addition and Merging of expectation curves when several prospect evaluations have to be aggregated, with interdependence of prospects.__ADDRES__, Reconstruction of an expectation curve from percentile figures (P90, P50, P10, etc.) to estimate POS and MSV for various cutoffs.__POSMSV__**ANOVA-PSA**, Analysis of Variance for Petroleum System Modeling.

Important for proper addition of prospects with dependencies.

*Hindsight analysis***KSTEST**, Kolmogorov-Smirnov test for the non-zero outcomes.**POSTEST**, Test for the validity of estimated Probabilities of Success.**CATTEST**, Cumulative Area test for ranking ability.

*Province/play analysis***LOGNORM**, program to plot normal and lognormal data distributions, calculate parameters and test goodness of fit.

*Unit conversions*, conversion of units relevant to prospect appraisal.__UNITCONVERTER__