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W 111 Technical Rule-Standard 03/2015

Planning, Execution and Analysis of Pumping Tests in Groundwater Development ++ PDF file ++

W 111 Technical Rule 2015
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  • Herausgeber/Verlag: DVGW
  • Format: 42 pages
  • Material: available as PDF only
  • Ausgabe: 2nd edition 2018
  • Hinweis: German version W 111
  • Verkaufseinheit: 1
  • Mindestabnahme: 1
  • Artikel-Nr.: 510250
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This Code of Practice W 111 shall apply to pumping tests during groundwater prospection and development and to well performance reviews.

pumping test or, to be more precise, well or aquifer test is performed between the construction and casing and the commissioning of a well. It documents the net output of the well that was achieved during the development stage, and permits drawing extensive conclusions about the local hydrogeological and hydraulic conditions. This Code of Practice intends to explain how to properly execute pumping tests to acquire and make available the considerable amount of data in the correct form. The information provided by pumping tests is crucially important for the future operation of a well as a repeat pumping test at a later point in time can help identify the well sageing process and record it appropriately, thusfacilitating the timely initiation of regeneration or rehabilitation measures.
Preamble

Introduction

1 Scope

2 Normative references

3 Terms and definitions

3.1 Well test

3.2 Aquifer test

4 Pumping tests

4.1 General

4.2 Pumping test types

4.2.1 Well tests

4.2.2 Aquifer tests

4.3 Pumping test objectives

4.4 Work flow

4.4.1 Pumping test - planning

4.4.2 Pumping test - execution

4.4.3 Pumping test - analysis

4.5 Pre-collection of data

4.6 Preparation

4.7 Test schedule

5 Pumping test types

5.1 General

5.2 Well tests

5.3 Aquifer tests

5.4 Test requirements

5.4.1 Measuring intervals and test duration

5.4.2 Array of monitoring points

5.4.3 Measuring accuracy

5.4.4 Concomitant measurements

5.5 Freedom from sand

6 Pumping test analysis

6.1 General

6.2 Identifying a suitable hydraulic model

6.3 Well test analysis

6.4 Aquifer test analysis

6.4.1 General

6.4.2 Line-of-best-fit method

6.4.3 Typical-curve method

6.4.4 Computer-based methods

6.4.5 Numerical methods

7 Water law

7.1 General

7.2 Permission

7.3 Proceedings for the preservation of evidenceAnnex A (informative) - Bill of quantities;aspects to be considered for pumping tests

Annex B (informative) - Check list

Annex C (informative) - Pumping test report:withdrawal well

Annex D (informative) - Pumping test report:measured values, withdrawal well

Annex E (informative) - Pumping test report:measured values, monitoring point

Annex F (informative) - Semi-logarithmicrepresentation

Annex G (informative) - Overview of selected terms