Text Box: Text Box: Through the use of trenchless equipment and methods, environmental and social impacts of infrastructure installations can be kept to an absolute minimum. The technology also allows installations under rivers, swamps,

DIRECTIONAL DRILLING

Using our range of directional drilling rigs we are able to upgrade existing water, storm water and sewer pipelines by reaming out the existing obsolete host pipe and pulling through a new polyethylene pipeline. This process ...

PIPE BURSTING/ REAMING

Through extensive experience and the constant improvement in underground guidance technology we can offer clients with near flat trenchless installation grades often with falls below 1%.

GRADE INSTALLATIONS

Coast Digger Services offer the capability of directional drilling in hard rock formations. Through the use of down-hole mud motors we are able to complete directional drilling installations that have previously been ...
Text Box: ROCK DRILLING

We can offer walkover guidance of directional drilled installations to depths of 40m. For installations in excess of this wire line guidance technology is used.

DEEP TRENCHLESS INSTALLATIONS

Wire line guidance is used where walkover location methods are not possible such as river crossings or very deep installations. Wire line guidance involves positioning the down-hole drilling tool using the earth’s magnetic field ...

WIRE LINE GUIDANCE

Having the ability to guide the down-hole tools using wire-line combined with the use of a mud motor to cut through the underlying bedrock allows for the  capability of installing  pipeline river crossings.

RIVER CROSSINGS

SERVICES

CDS New Zealand Limited offer the most comprehensive directional drilling services of any contractor in New Zealand. We have the experience and equipment to cater for a range of services including; water, sewer, storm water, telecommunication, power and gas.

Large scale directional drilling projects and fluid demands of down-hole mud motors make fluid separation equipment essential. Used drilling slurry carrying cuttings out of the borehole is processed through ...

FLUID—SOLIDS SEPERATION (MUD CLEANING)
Text Box: Coast Digger Services we operate state of the art polymer liquid stabilisation technology to process liquid wastes into a solid medium. This process encapsulates wastes and produces a material with reduced leaching.

LIQUID WASTE SOLIDIFICATION
Text Box: At Coast Digger Services we have the view that sharing of information progress the trenchless industry and therefore we offer a range of consultancy services including; Geotechnical interpretation ...

CONSULTANCY SERVICES
Text Box: At Coast Digger Services we offer turn-key solutions and as such we offer the client post installation CCTV inspections, low pressure air testing, hydrostatic testing and evaluation. In this way the project can be ...

TESTING AND COMMISSIONING

We operate a four wheeled Ditch Witch 3000L vacuum unit along with an eight wheeled 12,000L vacuum loaded used primarily for liquid slurry containment and removal. These trucks give us increased ...

VACUUM LOADING AND EXCAVATION

Dewatering of hillsides prior to subdivision construction and stabilisation of slips post occurrence has become an important part of our business. In this process directional drilling rigs are used to form a borehole into ...

SLOPE AND SLIP DEWATERING

We are able to provide the client with the reassurance of real-time pipeline tensile loading during pipeline installation along with data logged readings and a report on the loadings experienced. The internal ...

LOAD AND BOREHOLE PRESSURE MONITORING

Coast Digger Services along with its specialised drilling equipment and staff employ a civil drainage crew capable of installing manholes and associated infrastructure.

CIVIL WORKS