Halliburton announced today the successful completion of three wells in the Deep Water Gulf of Mexico utilizing Halliburton’s Enhanced Single-Trip Multizone (ESTMZ™) FracPac™ System.
ESTMZ™ downhole tool system enables the operator to stimulate and gravel pack multiple production zones in a single trip. Designed for use in Dee Water and Ultra-Deep Water offshore completions, the ESTMZ™ system allows the highest treating rate with the greatest volume of proppant in the industry.
Halliburton developed the multi-zone completion technology in collaboration with Chevron U.S.A. Inc. The two companies conducted numerous system integration tests and two field trials to prove the technology.
The time savings realized for each of the three Chevron-operated wells completed with the ESTMZ™ system averaged 18 days, equating to approximately $22 million.
“ESTMZ™ system allows more reservoir to be stimulated in a shorter amount of time, thus increasing efficiency, reliability and production, which is key to the success of the Lower Tertiary,” said Ron Shuman, Senior Vice President of Halliburton’s Southern and Gulf of Mexico regions.
“In addition, this system allows us to deliver a very aggressive stimulation with rates up to 45 barrels per minute and volumes greater than 400,000 pounds of 16/30 high strength proppant. We deliver this with weighted frac fluid and 10,000 horsepower per interval for up to five intervals, providing a total cumulative proppant volume of greater than two million pounds per well with one service tool. Having to make multiple runs in and out of the wellbore equates to a large expense for operators. The ‘single trip’ element of this system provides significant time savings with improved reliability and better asset optimization,” Shuman concluded.
Providing wellbore assurance through various critical operations such as wellbore cleanout, completion services, pumping and fluids also contributed to the success of these three wells. This integrated approach in planning and execution mitigated risks while promoting efficiency and providing an optimal conduit for the reservoir to flow.
The proven reliability of Halliburton’s ESTMZ™ tool system and the continual evolution of these smart technologies are critical to the changing landscape in the Gulf of Mexico. To date, Halliburton has successfully deployed nearly 20 ESTMZ™ systems around the globe including the Asia Pacific region.
A letter sent to the relevant companies points out that recovery from producing fields is an important commitment area for the Norwegian Petroleum Directorate. An increasing percentage of the oil production on the Norwegian shelf comes from subsea wells, and the number of wells is increasing. The NPD has noted that it could be challenging to both drill new sidetracks from the subsea wells and carry out maintenance.
“That is why the Norwegian Petroleum Directorate is concerned with finding good solutions that can contribute to maintaining or increasing production from subsea wells,” says Torsten Bertelsen, director responsible for the Norwegian Sea and Barents Sea.
Statoil has long worked on a new type of rig for subsea wells, a so-called category B rig. It is permanently equipped for cables, coiled tubing and slim hole drilling and is specially adapted to well intervention campaigns. This type of rig can be used on multiple fields with subsea wells.
Use of such a rig will contribute to improve rig capacity, increase the number of subsea wells and thus improve recovery from subsea wells.
In the letter to the licensees the Norwegian Petroleum Directorate asks the companies to support Statoil’s project or to present alternative measures or projects that can yield similar effects.
“A cooperation on the new rig type across production licences is considered good resource management,” says Bertelsen.
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