HOUSTON – Chevron has successfully completed three wells in the deepwater Gulf of Mexico using Halliburton’s Enhanced Single-Trip Multizone (ESTMZ) FracPac System.
Halliburton says the ESTMZ downhole tool system enables the operator to stimulate and gravel pack multiple production zones in a single trip, and is designed for use in deepwater and ultra-deepwater offshore completions.
Halliburton developed the multi-zone completion technology in collaboration with Chevron U.S.A. Inc. The time savings realized for each of the three Chevron-operated wells completed with the ESTMZ system averaged 18 days, equating to about $22 million.
Ron Shuman, senior vice president of Halliburton’s Southern and Gulf of Mexico regions, said: “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.
“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 lbs 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 2 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.”
The company says 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.