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Gulf of
Mexico Region Pipeline Incidents – 1997 February 02, 1997 - Chevron USA, Inc.
Remarks: While stationed at South Timbalier block 23, SB platform, the captain of the lift barge "Barracuda" received orders to move approximately a half mile to the southwest corner of the CM platform at South Timbalier block 24. While in transit, the captain was notified via radio by CC platform personnel that he was passing up the CM platform. The barge captain turned his vessel toward the CM platform and, when the barge was at a distance of about 200 ft from the structure, all four legs of the barge were lowered until bottom was contacted. Then all four legs were raised about 5 ft and maneuvering operations toward the CM platform were begun. When the barge was about 125 ft from the structure, the captain noticed bubbles in the water. The captain notified CM personnel via radio that a line may have been damaged. He then backed the barge up about 200-300 ft and checked the legs to see if a pipeline was still attached. Seeing the legs were free, the lift barge drifted and waited for orders. February 10, 1997 - Newfield Exploration Company
Remarks: None March 03, 1997 - Phillips Petroleum Company
Remarks: Construction activity was being conducted approximately 10 ft above and 10 ft horizontally from the area that the fire occurred. Slag from hot cutting work fell onto a pipeline expansion tank flange resulting in ignition of leaking natural gas. A 3-in flame was noticed by the fire watch and extinguished with one hand-held extinguisher. All hot work ceased and further work was done by cold-cut method. The area and flanges were sniffed prior to commencement of hot work/ construction activities. April 07, 1997 - ANR Pipeline Company
Remarks: An 8-in pipeline was dragged by an anchor causing a rupture at the tie-in of the following P/L - a 30-in and a 20-in ANR lines. July 18, 1997 - Flores & Rucks, Inc.
Remarks: A 4-in pipeline riser from Eugene Island Block 199 parted 2-3 ft above the water line and caught fire. The ensuing fire lasted for 20 minutes. The fire was extinguished by closing the block valve on the pipeline. One person jumped overboard at the time of the fire and was picked up by boat. This 4-in pipeline was inside a 6-in protector. Very corroded. The company will replace. August 22, 1997 - Pennzoil Exploration and Production Co.
Remarks: Helicopter flying in area discovered the slick with a few bubbles and reported this to the people on WC 165 platform. Pennzoil personnel determined that the pipeline belonged to NGPL. Pennzoil notified NGPL and diverted their production to another pipeline. September 08, 1997 - Union Oil Company of California
Remarks: Verbally reported to MMS on Sep 08 1997. Everything is shut-in until a decision is made on what to do. Only a 2.2-gallon spill. September 17, 1997 - ANR Pipeline Company
Remarks: Leak came from a 6-in ruptured flowline located on a ROW platform (D3302). Approximately 100 miles directly from Sabine Pass a 500 ft x 500 ft sheen dissipated within few hrs. Flow line was replaced, currently is shut-in. November 17, 1997 - Vastar Resources, Inc
Remarks: A helicopter notified slick. Shut in field. It was determined that the 4-in pipeline from the "C" platform to the "D" platform was leaking oil. There was a barge in the field laying a pipeline from the "C" to the "G". It is believed that a cable was dragged over the 4-in pipeline and caused the leak. At the present time there are a few bubbles of oil coming from the pipeline. November 19, 1997 - Shell Offshore, Inc.
Remarks: Sixty-three mile long, 1-in steel tubing that transports methanol from WD 143 A to subsea manifold/wells developed a leak. The exact location is unknown at this time. The operator has stopped pumping and is mobilizing a ROV to survey the line. Methanol is miscible, therefore the sheen observed seas 5-7 ft 20 knot winds. November 27, 1997 - Columbia Gulf Transmission Company
Remarks: Leak appears to be coming from a subsea tie-in between a 12-in producer line (SN 1490) from EI 273 "B" and a 26-in transmission line (SN 1495) in EI 285. Both are owned by Columbia Gulf (CG). Bad weather is preventing divers from surveying leak, so they may be unable to get to site until early next week. Bubble is 25-30 ft in diameter. Platform B has not been shut in. CG believes leak is coming from downstream of block valve at tie-in. The 26-in line is flowing 140MMCFD and the 12-in line 15MMCFD. December 24, 1997 - Pogo Producing Company
Remarks: Approximately 2,000 ft of Pogo Producing Company's 6-in oil pipeline Segment No. 11131, departing EC 334, E-platform to a subsea tie-in at EC 330 sustained severe damage as a result of being snagged by a M/V anchor and dragged approximately 765 ft from the original installation right-of-way. Damage to pipeline Segment No. 11131 occurred on December 24, 1997, at approximately 0300 hrs and apparently by the same marine vessel anchor that snagged Marathon Pipeline Company's 8-in oil pipeline Segment No. 3833 and Stingray Pipeline Company's 16-in gas pipeline Segment No. 3396. Marathon Pipeline Company's 8-in oil pipeline originates at Oryx Energy Company's EC 338, A platform and terminates at Marathon Oil Company's EC 321, A platform. Stingray Pipeline Company's 16-in gas pipeline, which is adjacent and parallel to the 8-in oil pipeline originates at Oryx Energy Company's EC 338, A platform and terminates at Stingray Pipeline Company's WC 509, compressor station. Damage to Pogo's 6-in pipeline was determined during a side-scan sonar survey being performed for Marathon Pipeline Company and subsequent video and visual inspections by ROV and divers. Damage is as follows: approximately 14,700 ft from subsea tie-in, the 6-in pipeline was pulled approximately 765 ft off of the existing pipeline right-of-way causing the pipe to flatten in the area hooked by the anchor (see enclosed sketch #1). The EC 334-E pipeline riser was pulled away from the platform approximately 900 ft before making contact with the sea floor. The riser was wrapped around the platform leg. December 24, 1997- ORYX Energy Company
Remarks: A Oryx energy company platform operator experienced a vibration of the platform and heard a loud noise coming from the production deck. Upon investigation, he observed that the 8-in oil pipeline pig launcher skid had been pulled through the ¼-in steel decking of the production deck on the south west end of the platform. He immediately activated the ESD to shut in the platform and start up the fire water deluge system. The water deluge system operated only briefly due to a rupture of the fuel gas piping to the gas driven generator. Damages to the platform and pipeline were severe. The 8-in oil piping parted on the pipeline pumps discharge at a downstream block valve flange. The 8-in oil pipeline pig launcher measuring 3 ft 2 in by 8 ft 10 in was pulled through the ¼-in steel decking. The steel decking was holed 1 ft 4 in by 2 ft 10 in by 8 ft. Weld-o-lets on the pipeline were sheared and three saddles supporting the pipeline were broken. Divers and side-scan-sonar verified that the 8-in oil pipeline from ec 338-a to ec 321-a had been snagged by a marine vessel anchor and dragged approximately 400 ft from the original installation boundry. Also, the 16-in gas stingray pipeline, which is adjacent and parallel to the 8-in oil pipeline showed tracks and marks of a marine vessel anchor snag that had slipped. The marine vessel anchor snagged the 8-in oil pipeline approximately 9,800 ft north of ec 338-a platform. Neither the 8-in nor the 16-in pipelines were parted at the anchor contact point. Divers verified that the ec 338-a platform sub-structure sustained no damage. The 8-in oil pipeline has been flanged off at the ec 338-a platform and flushed with seawater from the sub-sea tie-in back to ec 338-a platform. Oil recovery was estimated at 1,200 bbls. The 8-in oil pipeline has been secured. No additonal pollution is occurring or expected. A total of 15 bbls of oil was discharaged into the gulf waters and none recovered. There were no injuries. Privacy | Disclaimers | Accessibility | Topic Index | FOIA Last Updated: 06/24/08, 03:07 PM
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