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Horizontal Directional Drilling
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Digital Connection Co. Ltd.
Presentation
D C L
Digital Connection Co. Ltd. (DCL) was created in 2002 by Mr. Abdullah Akbar Natheer, a Saudi Aramco retiree, who had spent his career in Outside Plant Construction (OSP).
DCL undertook short form contracts in the beginning in the field of Telecommunication OSP.
During the first long form contract awarded by Saudi Aramco (Microwave Replacement, BI 10-3988), DCL introduced the idea of converting all road and utility crossings from open cut method to Horizontal Directional Drilling (HDD). The proposal was implemented and execution time was reduced to 1/3 of the scheduled duration planned for the construction of road crossings.
This was the start of a journey which has evolved into creation of the most comprehensive Trenchless Technology service provider in Saudi Arabia.
DCL THE BEGINNING Digital Connection Co. Ltd.
DCL SPECILIZED IN TRENCHLESS TECHINIC ’S
HDD-HORIZONTAL DIRECTIONAL DRILLING
MT-MICROTUNNELING PIPE JACKING
RM-RAMMING
KhafjiJubailDammam
Khobar
Tanajib
Haradh
Nuriyah
Abqaiq
Shaybah
Yanbu
Jubail
HORRIZONTAL DIRECTIONAL DRILLING
MICROTUNNELING
RAMMING
D C L T R E N C H L E S S P R O J E C T S I N S A U D I A R A B I A
ACHIEVEMENTS
DCL has completed more than 100,000 meters of utility crossings using various trenchless technologies, HDD, micro tunneling and pipe ramming.
DCL has constructed pipeline crossings up to 48 inch dia pipes using HDD.
DCL is credited with construction of world’s longest in length (3,045 meters) and largest in pipe dia (30 inch) crossing using HDD, at the time of execution back in 2008.
DCL has the most successful record of construction of pipeline crossings under the sand dunes in Shaybah.
Digital Connection Co. Ltd.
Digital Connection Co. Ltd.
Ty p i c a l H D D S e q u e n c e o f O p e r a ti o n
Digital Connection Co. Ltd.Pi lot Hole Dri l l ing
A PILOT HOLE is a smaller hole drilled into a material prior to a larger hole being drilled
The REAMING operation consists of using an appropriate tool to open the pilothole to a slightly larger diameter
Digital Connection Co. Ltd.Reaming
The PULLBACK operation involves pulling the entire pipeline length in one segment(usually) back through the drilling mud along the reamed-hole pathway.
Digital Connection Co. Ltd.Pul lback
Trenchless Projects
Client:- ROBAYA (Aramco)
Project length – 473Mtrs
Pipe dia – 46”
Pipe Material – Steel
HDD Rig – 250ton
Client:- ROBAYA(Aramco)
Project length – 60Mtrs
Pipe dia – 46”
Pipe Material – Steel
HDD Rig – 250ton
R O A D C R O S S I N G A T H A R A D H / H A W I Y A H
Between Abu Ali island and Berri Causeway Length 3,052 Meters (Each) Depth=37Meters Approximately Most challenging job in HDD industry These crossings are the longest in the world
to-date 24” crude oil pipeline is completed 30” water injection pipeline completed
C O N S T R U C T I O N O F B E R R I C A U S E W A Y P I P E L I N E S 2 4 ” & 3 0 ”
BERRI CAUSEWAY PIPELINES PROJECT
Horizontal Directional Drilling (HDD)
Contract # 6600018809
HDD 3052M
24”COMPLETED30” ONGOING
ENTRY POINTS
EXIT POINTS
Client:- SAS (Aramco)
Project length – 1500Mtrs
Pipe dia – 20”
Pipe Material – Steel
HDD Rig – 250ton
Client:- SAS (Aramco)
Project length – 2000Mtrs
Pipe dia – 20”
Pipe Material – Steel
HDD Rig – 250ton
S A N D U N E C R O S S I N G S I N S H A Y B A H
Project :- Micro Tunneling Pipe Jacking at Water Injection Plant Tanajib
Client :- JGC(Aramco), Project Length :- 100mtrs , Pipe Dia :-1600mm RCJ
M I C R O T U N N E L I N G P I P E J A C K I N G
Project Location
Project :- Highway Crossing by HDD & Ramming Assist48” Steel Pipe – 85 Mtr@ NWC project Hail
Project :- Tama Highway Crossing Yanbu 36” 60Mtr for SRB
R A M M E R W I T H H D D A S S I S T
Rammer
Product Pipe Pulling Assembly Drill String
HDD Machine
Typical Ramming With HDD Assist
Puling Assembly
HDD Site Setup
Side Boom Lifting the Pipe For Pull back Pulling Assembly
Pipe Being Pulled inside Borehole
HDD Rig
Supporti ng Faci l iti es
Control Cabin
Pump
Entry P it
Dri l l ing
Rock
Launching Seal MT Machine
Machine EntryLaunching Shaft
Trenchless Rigs and Machines
JT100 MACH 1DIRECTIONAL DRILLS
JT4020 All Terrain HDD – 4 nos
JT4020 -1 nos
JT8020 MACH 1 DIRECTIONAL DRILLS
Prime Drilling PD 250/90 RP HDD Rig DESIGN
Feeding via Rack & Pinion Trailer version, 11M feeding length (range 2 drill roads)2,500kN pull force9 torque
DRIVE 447kW Caterpillar engine - 6 Cylinder – Tropical version with expanded cooling systemNoise reduction - Progressively torque regulation via potentiometerElectronic motor control with automatic switching off
HYDRAULIC
Load Sensing Control Output : 1.000 l/min
PULL FORCE
2.500Kn (250t)6 pcs Poclain radial piston pump motors without gear reducer
DRILLING INCLINATION
8-15º with stable and comfortable support
POWER ROTARY HEADTorque : 90.000Nm -35 rpm45.000Nm -70 rpmDynamic axial trust load :3.200kN (320t)Static axial thrust load :4.500kN(450t)Drive Shaft slidable for 70mm
250ton RIG SPECIFICATIONS
Jacking Stati on Launching Shaft
Machine Detai l
Micro tunneling Pipe Jacking Machine 1600mm to 2000mm
ThanksEnd Of Presentation