contractors’
directory
2015
66
ONSHORE
PIPELINES
REHAB
MAINTENANCE
RESEARCH &
DEVELOPMENT
TERMINALS
FEASIBILITY
STUDIES
FINANCE,
STRATEGY
& ANALYSIS
WELDING
COMPRESSOR
STATIONS
HORIZONTAL
DIRECTIONAL
DRILLING
TURNKEY
CONSTRUCTION
OFFSHORE
PIPELINES
H
oelscher Wasserbau GmbH is a family-owned
business operating internationally and rooted
in Haren, a provincial town located in the
Lower Saxon district of Emsland near the
Dutch border, Germany. More than 450 employees at
eight German locations provide services in the areas of
dewatering, environmental engineering, well drilling and
groundwater management. The company, which is known
for its employee-friendly personnel policies, is highly
experienced both in the construction of infrastructural
and industrial facilities and in energy and environmental
engineering.
The company is represented internationally by
BUDWUG in Poland, Reinders Wessemius in the
Netherlands, and Uniquip Hoelscher in Qatar. There are
additional locations in Romania, Italy,
Denmark and the UK. Furthermore,
the subsidiary SL – Service & Logistik,
responsible for maintenance and
logistics services for construction sites
– is also part of the corporate group
and works exclusively for Hoelscher
Wasserbau.
The company is servicing around
800 construction sites per year,
including large scale projects like the
OPAL Pipeline (the Baltic Sea Pipeline
Link).
The scope of services provided by
Hoelscher Wasserbau includes:
F
Dewatering.
F
Groundwater control.
F
Groundwater management.
F
Well drilling.
F
Water treatment.
Recently completed or ongoing oil and gas pipeline
projects:
TENP Pipeline
The TENP Pipeline project involved the treatment of
pigging process water from gas pipelines for the client
(Trans Europe Naturgas Pipeline, Essen) in Müllheim,
Baden/Germany. The scope of work included supply
and installation of a treatment system for contaminated
process water with flowrates ranging from 600 - 700 m³/hr.
It also covered upkeep, maintenance and 24/7 operation
of system for removal of petroleum hydrocarbons and
BTEX from used process water, as well as regulation
of its pH level. The individual treatment steps – i.e.
neutralisation and activated carbon adsorption – are
designed in a modular configuration. Supply and
installation of a de-iron unit for treatment of
Hoelscher Wasserbau GmbH
Groundwater treatment plant at a gas pipeline project.
Installation of horizonal drain for
pipeline ditch dewatering.
high-iron-groundwater is used as inlet process water for
pipeline pigging.
NEL (Nordeuropäische Erdgasleitung) Pipeline,
Germany
3500 well points, 110 000 m of horizontal dewatering,
supply and installation of a treatment system for
contaminated process water with flowrates ranging
from 100 - 600 m³/hr.
OPAL Pipeline, Germany
The OPAL pipeline was constructed in Germany from 2009
for two years. The 470 km pipeline was split into
