W 111 Technical Rule-Standard 03/2015

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

76,15 €*
  • DVGW
  • 42 pages
  • available as PDF only
  • 2nd edition 2018
  • 1
  • 1
  • 510250

76,15 €*

This Code of Practice W 111 shall apply to pumpingtests during groundwater prospection anddevelopment and to well performancereviews.

pumping test or, to be more precise, well oraquifer test is performed between the constructionand casing and the commissioning of a well. Itdocuments the net output of the well that wasachieved during the development stage, and permitsdrawing extensive conclusions about the localhydrogeological and hydraulic conditions. ThisCode of Practice intends to explain how toproperly execute pumping tests to acquire and makeavailable the considerable amount of data in thecorrect form. The information provided by pumpingtests is crucially important for the futureoperation of a well as a repeat pumping test at alater point in time can help identify the well?sageing process and record it appropriately, thusfacilitating the timely initiation of regenerationor rehabilitation measures.


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