W 119 Technical Rule - Standard 12/2002 -PDF file-
Development of Wells by Desanding ? Requirements, Methods, Residual Sand Contents
- Herausgeber/Verlag: DVGW
- Format: 29 pages
- Material: available as PDF only
- Ausgabe: 2nd edition 2002
- Hinweis: German version W 119
- Verkaufseinheit: 1
- Mindestabnahme: 1
- Artikel-Nr.: 510401
59,59 €*
1 Scope
2 Normative references
3 Definitions, abbreviations
3.1 Development
3.2 Desanding
3.3 Intensive desanding
3.4 Solids content
3.5 Sand content during desanding
3.6 Residual sand content
3.7 Colmation (Clogging)
3.8 Mammoth pump principle
3.9 Abbreviations
4 Well purging and removal of silt accumulations
4.1 Well purging
4.2 Removal of silt accumulations
5 Functions of development by desanding
6 Desanding ability / desanding risks
7 Desanding methods
7.1 General
7.2 Continuous methods
7.2.1 Swabbing
7.2.2 Intermittent pump out (shocking)
7.3 Section-by-section methods
7.3.1 Intensive desanding
7.3.1.1 Sealed submersible motor pump
7.3.1.2 Desanding strainer
7.3.2 High-pressure water (pressure wave/impulse method acc. to DVGW Technical Standard W 130)
7.3.3 Swabbing with simultaneous pumping out
8 Characteristics in consolidated rock
8.1 General
8.2 Developing during drilling operations
8.3 Developing an open well bore
8.4 Developing a well already equipped with casing and gravel
9 the sand content and residual sand content
9.1 General
9.2 Measuring methods
9.2.1 Wet measurement
9.2.2 Dry measurement
9.3 Measurement methods
9.3.1 Buckets
9.3.2 Sand measuring tank
9.3.3 Sand measuring instrument
9.4 Criteria for discontinuing desanding
9.5 performance acceptance tests
9.5.1 Measurements at acceptance of well structure
9.5.2 Measurements during operation
10 Documentation
11 Absence of sand/residual sand content
Approvals/notifications
13 to reduce the sand content
13.1 Assessment of sand production
13.2 Measures
14 Details of contract specification
15 Contract award
Annex A (informative)
Annex B (informative)
Annex C (informative)
Annex D (informative)