HGS Slug Test Calculator

Ready. Enter project and test data.

1. Project

2. Well Geometry

3. Test Data

4. Results & Plots

5. Summary Report

Project Details

Select Project *

Loads project list from NocoDB. ↻ Refresh

Project Code *

Unique identifier (used as NocoDB scope)

Project Name *

Test Date

Bore Well ID

Aquifer Formation

Well Geometry & Test Configuration

Note: All measurements in metres. Radii measured to the inside of the casing and the outside of the screen/filter pack respectively.

Test Method *

Test Type

Slug Volume Added (L)

Measured volume of water poured in

Well Dimensions

Casing Inside Radius, r_c (m) *

Typical 100 mm bore → 0.050 m

Screen / Filter Pack Radius, R (m) *

Include gravel pack if present

Screen Length, L (m) *

Total Well Depth (m bgl)

Static Water Level, SWL (m bgl) *

Pre-test depth to water

Recovery Readings

Record time (seconds) from slug-in, and depth to water (m bgl) at each reading. H = current head above/below SWL. For falling head H decreases; for rising head it rises back to SWL.

#	Time t (s)	Depth to Water (m bgl)	Head H (m)	H/H₀	Action

HGS Slug Test Calculator

Project Details

Well Geometry & Test Configuration

Well Dimensions

Bouwer-Rice Extra Parameters

Recovery Readings

Calculation Results

Summary Report