Horizontal Directional Drilling

Naval Facilities Engineering Command - Ford Island

Naval Facilities Engineering Command - Ford Island

Scope

Michels performed Horizontal Directional Drilling (HDD) operations to replace 3,500 linear feet (lf) of deteriorated 24-inch cast iron waterline with new 24-inch fusible PVC pipe spanning across the southwest portion of Pearl Harbor.

Special precautions were implemented to not disturb the runway that was parallel to the pipe lay-down area, as it was of historic value having sustained heavy gunfire from Japanese Zeros during the surprise attack on Pearl Harbor. Ordinance became embedded into the asphalt runway and is now being preserved.

Due to expectant variable geological conditions consisting of low blow count material mixed with cobble and volcanic tuff, the engineered drawings called for installation of a larger diameter steel protective casing (30" O.D. 0.500" wt) for the entire length of the crossing to house the 24-inch PVC liner as the plastic pipe was not expected to withstand impacts caused by unfavorable soil conditions.

Pullback of the steel casing pipe required an orchestrated placement of heavy iron elevating the 162 pound-per-foot steel pipe up to 15 feet in the air, using cradles and rollers positioned along the radius configuration necessary for maintaining integrity of the steel pipe and providing smooth transition into the opened hole.

Additional assist equipment was also staged along the pullback alignment to support the pipe on rollers around the curve. This maintained stability on the supports while negotiating the tight radius to mitigate buckling of the casing all while conforming to the highly restricted right of way.

Accomplishments:

Projects

<p>The Bakken Missouri River Crossing Project connects an existing compressor station located in the Bakken shale oil fields in Williams County, North Dakota, to a natural gas gathering system located in McKenzie County, North Dakota.</p>

Horizontal Directional Drilling

Bakken Missouri River Crossing

North Dakota

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Bakken Missouri River Crossing

Michels completed a complex design-build construction project for the Jacksonville Electric Authority performing horizontal directional drilling (HDD), reaming and pullback operations for a 36" steel water main that spanned 6,575'.

Horizontal Directional Drilling

St. John's River Crossing Design Build

Florida

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St. John's River Crossing Design Build

Michels redesigned and used horizontal directional drilling to complete a 2,384-foot crossing of 12-inch STW pipe under the Missouri River.

Horizontal Directional Drilling

Glacier Replacement HDD

Montana

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Glacier Replacement HDD

Horizontal Directional Drilling

Nexus Gas Transmission Pipeline

Michigan & Ohio

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Nexus Gas Transmission Pipeline

Michels installed a 4,000-foot land-to-land and a 1,600-foot water-to-land installation of 16-inch pipe.

Horizontal Directional Drilling

Salem Lateral

Massachusetts

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Salem Lateral

Michels trenchlessly installed 1,500 feet of 24-inch natural gas pipeline under a highway, creek and pond in a residential neighborhood.

Horizontal Directional Drilling

North Branch Pipe Replacement

Minnesota

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North Branch Pipe Replacement

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