Typical Completed Projects
East Cote Blanche Bay, Louisiana
This project was the forerunner of ScourMats and the inspiration behind SBT’s full line of services and products. This ScourMat was installed in 1999 on a 14” oil pipeline. The completed structure is over 950 feet long and 30 feet wide. It is a single monolithic articulating structure, not small pieces of mat joined with vulnerable rope-on-rope connections.
The tubular appendages on both sides are called ScourBrakes; self-burying tubes that protect the main mat from undermining or flipping by storm surge and wave action. They are connected to the mat with the same integral high strength Duravet tendons used throughout. The result is a stronger installation capable of withstanding Hurricane Katrina and every other area storm since early 1999 when it was installed.
Galveston Bay Span Correction and Pipeline Cover
A large oil pipeline company experienced a major span of their 14” oil pipeline under the Galveston Railroad Causeway on Galveston Island. The pipeline had a span approximately 80 feet long directly underneath the causeway and a total of 450 feet of pipe that was shallow or exposed. The original project plans required two crane barges to cross-haul mats under the causeway, four barge tugs and material barges to supply mats and numerous truckloads of pre-cast mat to correct the problem. The client had allocated 45 days for the project.
Instead of pre-cast mats, SBT provided ScourMat pipe support fabric forms for the client’s divers to place and inflate under the span. SBT also provided the ScourMat forms to cover the 450 feet of shallow and exposed pipe with armoring.
The total elapsed time to complete the work was under 10 days. The crane barge and tug already on site was utilized for diving support. No material barges, tugs or trucks were required to get materials to the work site. The cost saving the client experience was staggering compared to the conventional plan of setting pre-cast mat.
Remote Pipeline Exposure, Utah
SBT was tasked by a pipeline operator in Utah to find an economical means of providing concrete mats to place an erosion control structure over two exposed pipelines in a common R.O.W. The pipelines were on a steep slope, bounded by active an rail line on one side and a cliff on the other. The only access would be by rail and tracked machinery.
SBT was able to ship empty SeaMat forms from Houston to Utah for very little cost and inflate the mats at a staging area by the rail line close to the exposures. The mats were then assembled into the engineered structure required to protect the lines.
Span Correction, Trinity River
SBT was tasked to provide emergency pipeline span support mats under two oil pipelines in the Trinity. SBT worked with the client’s preferred diving contractor to place and inflate mats under one span 70 feet long and the second span 80 feet long. Access was through 1400 feet of board road. Elapsed time to correct the two spans was under 12 hours including training the divers in the SeaMat fabric technology.
Dutch West Indies
SBT was tasked by an offshore terminal facility to provide a “landing” ScourMat 150’ long over irregular hard bottom to prepare the beach approach for a new 4” nitrogen pipeline. After the line was installed another mat 15’ long would be used to cover and protect the line from the concrete jacks replaced on the approach. The two ScourMats were shipped from Houston to the location for under $1000 and inflated with local concrete.
Gulf of Mexico Pipeline Spans
SBT was tasked to provide personnel, materials and equipment to provide full contact SeaMat support structures under several spanned areas of a high pressure large diameter gas pipeline. Five locations were considered critical enough to perform the work in winter and the remainder was completed in early summer. A total of seven locations comprising almost 1200 feet of span were corrected with 100% support. Working together with divers contracted by the operator, the project was completed on schedule and under budget.
