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本帖最后由 smartdou 于 2014-7-12 10:25 编辑
Gabe Collier
posted yesterday
- 1
Are slick water fracs becoming more common in the Bakken? - I've heard some rumblings that slick water fracs are producing some strong results in the Bakken. What's the latest on this and what does adoption of slick water fracs look like in the play? Any play-specific challenges to the spreading of this practice?
5 Answers- 1
Wayne Cutrer answered 8 hours ago Slick water fracs are becoming more common in the Bakken, as well as other areas like the Eagle Ford and DJ Basin. We have introduced a viscosity enhanced slick water system we call OmegaStim, in an effort to offer a functional alternative to Hybrid and full cross linked fluid systems. To Gary's comment above, a major obstacle to widespread adoption of slick water systems is the increased water usage. We are able to put away sand concentrations as high as 5 ppg of 20/40, so this allows E&P companies to achieve performance of hybrid/cross linked, with no increase in water usage and lower total chemical spend. In 2014 we have over 2,500 stages pumped with this system in the DJ Basin, Barnett Shale and Tuscaloosa Marine Shale. We have trials coming up in the Bakken, so we will see how the technology applies to that area.
Wayne Cutrer answered 8 hours ago - Frank Canepa answered 7 hours ago Gary brings up an excellent point. Selecting the right fluid, be it SW or XL-gel is only one part of the equation. The proppant, and density of the proppant layer, you select will be a key determinant in the long term productivity of the well.
I will refrain from implying that there is any "standard" completion design in the basin, as we believe the geology, and your experience, drives the design you select. And, it's important that one acknowledges that individual operators have different requirements based on their sources and costs of capital. Those operating on the Canadian side only serve to add to the diversity of operating philosophies. That does not mean one operations model is better or worse, again only that they are different.
Depending on the geographic area of the "the Bakken" in which you are operating, you can rationalize the additional costs for both ceramic proppant and a larger frac job. With the volume of publicly-available information available, one can research what completion designs are working best in a given area.
Frank Canepa answered 7 hours ago
[url=]i Comment on answer[/url] - 0
John Hostetler answered yesterday This SPE paper, released late-last year is one reason you are hearing more about this methodology for the Bakken. The authors showed that higher cost advanced completion techniques work in the Bakken, using data from a sample of 1,100 wells. Some key Bakken players, such as Oasis, are now buying in. Oasis says SW wells outperformed standard wells by 25%. I see this practice becoming standard over the next few years in the Bakken and I think you'll hear a lot more about adoption by operators in 2H14.
John Hostetler answered yesterday -
Gary Searles answered yesterday The biggest obstacle to more widespread adoption is water procurement and truck loads. Reducing both is already a demand being placed on industry by local municipalities. An average Bakken well already takes in 500 truckloads of water and sends out 300 trucks out prior to first production. That's a lot of traffic and water sources are limited. Slick water fracs will require even more water.
Also, slick water fracs cost operators as much as 30-60% more than hybrid or gel fracs (ie an extra $1-$2mm per well). About half the mark-up is extra water and about half is the ceramic proppant needed.
Gary Searles answered yesterday - Shaun Teierle answered 2 hours ago One of the many answers to this question is saving water is using the Boss Hog Frac Plug. Using this system saves up to 40% water used in a multiple zone frac. Please contact me at www.fracserve.com for more information
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