AI
Monday, February 18, 2008 6:16:39 PM
Cajun Express - another deepwater semi submersible rig with EW systems on it.
Details of rig at:
http://www.deepwater.com/fw/main/Cajun_Express-52C77.html?LayoutID=17
Pumped Up: Chevron Drills Down 30,000 Feet to Tap Oil-Rich Gulf of Mexico
By Amanda Griscom Little Email 08.21.07 | 2:00 AM
Full article at:
http://www.wired.com/cars/energy/magazine/15-09/mf_jackrig#
"The Cajun Express has bored the deepest offshore well in Gulf history.
Photo: Michael Sugrue
Feature
Drilling Fields
"Isn't this transcendent?" Paul Siegele shouts as he presses his nose to the window of a Bell 430 chopper hurtling through a sky thick with rain and pitchfork lightning. We're flying over the Gulf of Mexico, above some 3,500 oil production platforms, and Siegele is pointing them out with the verve of a birder — here a miniature oil rig known as a monopod; over there a drill ship almost as big as the Titanic; still farther out, platforms looking like huge steel chandeliers that dropped out of the storm-shaken clouds.
Siegele has reason to be giddy. He works for Chevron, and his team is sitting on several new record-breaking discoveries in the Gulf, a region that many geologists believe may have more untapped oil reserves than any other part of the world. On this trip, the 48-year-old vice president for deepwater exploration has come to a rig called the Cajun Express to oversee final preparations before drilling begins on the company's 30-square-mile Tahiti field.
Looming like an Erector set version of Hellboy — with cranes for arms, a hydraulic drill for its head, and a 200-foot derrick for a body — the rig appears at once menacing and toylike. But the real spectacle is below the surface: A drill is plunging down through 4,000 feet of ocean and more than 22,000 feet of shale and sediment — a syringe prodding Earth's innermost veins. That 5-mile shaft will soon give Chevron the deepest active offshore well in the Gulf. Some land drills have gone deeper, but extracting oil from below miles of freezing salt water and unyielding sediment creates a set of technical problems that far exceed those faced on terra firma.
Minutes after we land on the Cajun Express, Siegele gets some bad news from Ron Byrd, his weather-beaten site manager. "The junk basket is stuck way down there on some debris," says Byrd, who has captained offshore rigs for more than 30 years. The junk basket is an 8-inch hunk of iron that runs up and down the entire length of the drill hole on a piece of wire, scraping the well clean before sensitive production instruments are dropped in. It's a particularly important device when drilling offshore, because the presence of the ocean pushes debris, mud, fossils, and other muck into the hole.
Siegele, who is a lanky 6' 3" with a mild, professorial manner and a boyish mop of brown hair, winces almost imperceptibly. "Just a little bump in the road," he mutters. Technically, it's a million-dollar bump. The crew will spend 48 hours fishing the jammed tool out of the hole, halting all other activity on a rig that costs over $500,000 a day to run. But this is chump change to Siegele, who has an annual budget of more than $1 billion. "If snags like this didn't happen so frequently," Siegele says, "you'd probably let them get to you."
It's just another high-priced mishap in the world of ultradeep-sea drilling — the newest, riskiest, and most technologically extreme drilling frontier. Today, deep-sea rigs are capable of reaching down 40,000 feet, twice as deep as a decade ago: plunging their drills through 10,000 feet of water and then 30,000 more feet of seabed. One platform sits atop each so-called field, thrusting its tentacles into multiple wells dug into ancient sediment, slurping out oil, and then pumping it back to onshore refineries through underwater pipelines.
It's a business where huge sums are lost (two years ago, BP suffered a $250 million blow when a hurricane took out one of its platforms) but even more can be made. The mother lode of oil in the deepwater Gulf is so significant that Tahiti and other successful fields in this region are expected to soon produce enough crude to reverse the long-standing decline in US oil production of about 10 percent per year.
Even better, a recent discovery by Chevron has signaled that soon there may be vastly more oil gushing out of the ultradeep seabeds — more than even the optimists were predicting four years ago. In 2004, the company penetrated a 60 million-year-old geological stratum known as the "lower tertiary trend" containing a monster oil patch that holds between 3 billion and 15 billion barrels of crude. Dubbed Jack, the field lies beneath waters nearly twice as deep as those covering Tahiti, and many in the industry dismissed the discovery as too remote to exploit. But last September, Chevron used the Cajun Express to probe the Jack field, proving that petroleum could flow from the lower tertiary at hearty commercial rates — fast enough to bring billions of dollars of crude to market. It was hailed as the largest publicly reported discovery in the past decade, opening up a region that is perhaps big enough to boost national oil reserves by 50 percent. A mad rush followed, and oil companies plowed more than $5 billion into this part of the Gulf. "
Details of rig at:
http://www.deepwater.com/fw/main/Cajun_Express-52C77.html?LayoutID=17
Pumped Up: Chevron Drills Down 30,000 Feet to Tap Oil-Rich Gulf of Mexico
By Amanda Griscom Little Email 08.21.07 | 2:00 AM
Full article at:
http://www.wired.com/cars/energy/magazine/15-09/mf_jackrig#
"The Cajun Express has bored the deepest offshore well in Gulf history.
Photo: Michael Sugrue
Feature
Drilling Fields
"Isn't this transcendent?" Paul Siegele shouts as he presses his nose to the window of a Bell 430 chopper hurtling through a sky thick with rain and pitchfork lightning. We're flying over the Gulf of Mexico, above some 3,500 oil production platforms, and Siegele is pointing them out with the verve of a birder — here a miniature oil rig known as a monopod; over there a drill ship almost as big as the Titanic; still farther out, platforms looking like huge steel chandeliers that dropped out of the storm-shaken clouds.
Siegele has reason to be giddy. He works for Chevron, and his team is sitting on several new record-breaking discoveries in the Gulf, a region that many geologists believe may have more untapped oil reserves than any other part of the world. On this trip, the 48-year-old vice president for deepwater exploration has come to a rig called the Cajun Express to oversee final preparations before drilling begins on the company's 30-square-mile Tahiti field.
Looming like an Erector set version of Hellboy — with cranes for arms, a hydraulic drill for its head, and a 200-foot derrick for a body — the rig appears at once menacing and toylike. But the real spectacle is below the surface: A drill is plunging down through 4,000 feet of ocean and more than 22,000 feet of shale and sediment — a syringe prodding Earth's innermost veins. That 5-mile shaft will soon give Chevron the deepest active offshore well in the Gulf. Some land drills have gone deeper, but extracting oil from below miles of freezing salt water and unyielding sediment creates a set of technical problems that far exceed those faced on terra firma.
Minutes after we land on the Cajun Express, Siegele gets some bad news from Ron Byrd, his weather-beaten site manager. "The junk basket is stuck way down there on some debris," says Byrd, who has captained offshore rigs for more than 30 years. The junk basket is an 8-inch hunk of iron that runs up and down the entire length of the drill hole on a piece of wire, scraping the well clean before sensitive production instruments are dropped in. It's a particularly important device when drilling offshore, because the presence of the ocean pushes debris, mud, fossils, and other muck into the hole.
Siegele, who is a lanky 6' 3" with a mild, professorial manner and a boyish mop of brown hair, winces almost imperceptibly. "Just a little bump in the road," he mutters. Technically, it's a million-dollar bump. The crew will spend 48 hours fishing the jammed tool out of the hole, halting all other activity on a rig that costs over $500,000 a day to run. But this is chump change to Siegele, who has an annual budget of more than $1 billion. "If snags like this didn't happen so frequently," Siegele says, "you'd probably let them get to you."
It's just another high-priced mishap in the world of ultradeep-sea drilling — the newest, riskiest, and most technologically extreme drilling frontier. Today, deep-sea rigs are capable of reaching down 40,000 feet, twice as deep as a decade ago: plunging their drills through 10,000 feet of water and then 30,000 more feet of seabed. One platform sits atop each so-called field, thrusting its tentacles into multiple wells dug into ancient sediment, slurping out oil, and then pumping it back to onshore refineries through underwater pipelines.
It's a business where huge sums are lost (two years ago, BP suffered a $250 million blow when a hurricane took out one of its platforms) but even more can be made. The mother lode of oil in the deepwater Gulf is so significant that Tahiti and other successful fields in this region are expected to soon produce enough crude to reverse the long-standing decline in US oil production of about 10 percent per year.
Even better, a recent discovery by Chevron has signaled that soon there may be vastly more oil gushing out of the ultradeep seabeds — more than even the optimists were predicting four years ago. In 2004, the company penetrated a 60 million-year-old geological stratum known as the "lower tertiary trend" containing a monster oil patch that holds between 3 billion and 15 billion barrels of crude. Dubbed Jack, the field lies beneath waters nearly twice as deep as those covering Tahiti, and many in the industry dismissed the discovery as too remote to exploit. But last September, Chevron used the Cajun Express to probe the Jack field, proving that petroleum could flow from the lower tertiary at hearty commercial rates — fast enough to bring billions of dollars of crude to market. It was hailed as the largest publicly reported discovery in the past decade, opening up a region that is perhaps big enough to boost national oil reserves by 50 percent. A mad rush followed, and oil companies plowed more than $5 billion into this part of the Gulf. "
Sage
