AQTESOLV for Windows--Curve Matching

Advanced Software for Pumping Tests/Slug Tests/Constant-Head Tests	Official Developer Web Site by HydroSOLVE, Inc.
Curve Matching
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Butler (1998)

AQTESOLV Home > Features > Curve Matching

Visual and Automatic Curve Matching

AQTESOLV now features the Solution Expert to help you select an appropriate solution method!

Automatic curve matching now includes singular-value decomposition to improve convergence from poor starting guesses!

	Visual Matching
	Active Type Curves
	Sensitivity Analysis
	Type Curve Families
	Solution Expert
	Time Window

	Automatic Matching
	Tweak Parameters
	Statistical Analysis
	Recommended Head Ranges
	One-click matching
	Singular-value decomposition

AQTESOLV pioneered the integrated use of visual and automatic curve-matching methods for the analysis of aquifer test data. No other program provides greater ease or flexibility in evaluating data from pumping tests, slug tests or constant-head tests.

"I cannot imagine that I ever tried to analyze aquifer tests with manually plotted data curves using a light table. What a tremendous service you have provided with this software. Thank you."

Jim Borchers, USGS

Visual Matching

One-click matching allows you to just point, click and drag to match a type curve or line to your data. AQTESOLV automatically updates hydraulic parameter values as you move the curve!

	Match solutions in the traditional way, only better!
	Simultaneously match drawdown and recovery data (video)!
	Simultaneously match displacement and derivative data!
	Active Type Curves replace Type A and Type B analysis (video)!
	Select any curve from type curve family solutions!

Active Type Curves

AQTESOLV introduces Active Type Curves, a new feature that greatly enhances visual curve matching. Active Type Curves expand visual curve matching capabilities for variable-rate pumping tests and aquifer tests with wellbore storage, leakage, delayed gravity response and double-porosity behavior.

Traditional methods of visual curve matching implemented by other aquifer test analysis software are limited by static type curves and static type curve families. Static curves prepared for a single set of conditions are unable to accommodate more complex conditions arising from boundary effects, variable pumping rates, aquitard storage and double-porosity behavior. Active Type Curves, which automatically adapt to specific test and aquifer conditions, overcome this limitation.

	Videos Demonstrating Active Type Curves
	Download video for variable-rate pumping test with recovery (AVI format, 298 KB)
	Download video for a constant-rate pumping test in an unconfined aquifer with delayed gravity response (AVI format, 279 KB)
	Download video for a slug test in a high-K aquifer with oscillatory response (AVI format, 345 KB)!

Automatic Matching

Match any aquifer test solution objectively and efficiently using automatic curve matching. AQTESOLV uses nonlinear weighted least-squares with singular-value decomposition to determine the optimal match between an aquifer test solution and your data.

	Save time and increase precision when matching complex solutions with multiple type curve families!
	Apply weights to activate or deactivate measurements during estimation!
	Activate or deactivate individual wells to match groups of wells!
	Apply singular-value decomposition to achieve convergence on difficult problems!
	*Select a time window* to perform matching to a selected range of data!

Sensitivity Analysis/Tweaking

AQTESOLV introduces a new tool that lets you tweak individual parameters and fine tune the match of solutions to your data.

	Perform sensitivity analysis for individual aquifer parameters!
	Perform visual matching by tweaking individual parameters!
	Enhance estimation by performing visual curve matching on derivative plots!

Solution Expert

AQTESOLV provides a Solution Expert to help you select appropriate aquifer test solution methods. For example, you can use the Solution Expert to identify solutions that apply to partially penetrating wells with wellbore storage.

Type Curve Families

"The families of curves are terrific and do everything I could possibly ask. Absolutely super!"

William Hotchkiss, Ph.D., NRCE, Inc.

AQTESOLV lets you match any curve from solutions with type curve families. Plus, while matching your data to a specific curve, you can view a family of type curves as a reference for selected solutions.

	Choose from three options* for displaying type curve families!*
	Display custom or preset* type curve families!*
	Superimpose the Theis solution* on type curve families!*
	Interactively change curve families on toolbar!

	Residual statistics and residual plots help you analyze the errors between the observed displacement data and an aquifer test solution.
	Standard errors allow you to construct approximate confidence intervals for each hydraulic parameter (e.g., T or S) in an aquifer test solution.