Some questions about the hydraulic fracturing technology in shale gas development.
Hi,everyone:
I'm doing a paper about the hydraulic fracturing technology in shale gas.As i know,the technology which are applied in shale gas development includes Stage Fracturing, Water Fracturing, Simultaneous Fracturing, Hydrojet Fracturing, Refracturing and so on.But I can't tell the defferences between these teachnology and in which condition one of these technology can use in the shale gas well.
I have some unmature viewpoints about these teachnology which may be wrong.
First,the main feature of the Stage Fracturing(or Multi-Stage Fraturing) is multistage fracturing and segmentation fracturing.It is named from its operation way but isn't a theory technology.In the Stage Fraturing,we can use water fracturing,hydrojet fracturing and so on.Stage Fracturing is the main fracturing way in the shale gas well currently.It can be used in shale gas well in which there is not only one prodution formation.The Stage Fracturing teachnology contain Sliding sleeve completion and coiled tubing fracturing. Sliding sleeve completion is used in horizontal wells and the coiled tubing fracturing is used in vertical wells.
Second,Water farcturing is named from its fracturing fluid that is mainly composed by water and sand (above 99%) and some additives(less than 1%).Water fracturing is cheaper than slickwater water fracturing(fracturing fluid is composed by gel).Water fracturing is widely used in shale gas well which clay is low(less than ?%).
Third,Simultaneous Fracturing is used between two or more than two offset wells.It's mostly use water fracturing fluid.But the distance between the offset wells can't be far.
Hydrojet Fracturing is named from its perforating.But which reservoir conditon is best applied this technology I don't know.
Last,Refracturing is used in the shale gas wells which have been fractured before but after a production time the production is dowm.
It's would be my honour that if you will tell me some about these technology.
Views: 905
Replies to This Discussion
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Permalink Reply by Jean Michel LeTennier on -
some docs
- Attachments:
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Marcellusshale61208ppt.PDF, 2 MB -
nys gas geology.pdf, 1.3 MB
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Wrightstone_IOGAWV_012010.pdf, 4.1 MB
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Permalink Reply by Jean Michel LeTennier on
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some more
- Attachments:
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hudson.pdf, 4.3 MB
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GAS-DRILLING_REGIONAL-SUMMARY.pdf, 699 KB
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wrightstone.pdf, 4.5 MB
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Permalink Reply by Charley - KY on
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Go to the office of one of the service compaines. they will have engineers that know what they are doing. It is not particularly proprietary as a process, although some of the additives may be. Maybe they will take you on a frac job. It is pretty darned intense when they get all of that horsepower running and the lines are vibrating from the water flow.
good Luck.
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Permalink Reply by Tang Ying on
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Thank you for your reply.WOW,what a well thing if i can go to a frac job in the shale gas development in US!The fact is that I am in China and the development of shale gas in China is taking off.In conventional gas development,I think China have did a success.To shale gas development success, I think we have a long way to go.
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Permalink Reply by David Pache on
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I think the future of Fracturing will not even include water, it will be done with gelled propane and will solve all of the problems with procuring water and what to do with the waste.
http://www.gasfrac.com/
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Thank you for attention.You said that the water fracturing would be replaced by gell propane and would solve all of the problems with procuring weter and the waste.I am sorry to say that i don't think so.First,the cost is main factor in shale gas development.There is no denying the fact that the water fracturing is the cheapest solutin.As we know,in Barnett Shale,Mitchell Energy have tried Slikwater Fracturing(the fracturing fluid is composed by water and gell) during 1986-1997.But in 1997 Mitchell Energy stop Slikwater Frac because of its high cost.Water Fracturing can save 60% cost of Slikwaer.I don't think the cost of gelled propane will be cheaper than water fracturing.Second,the fracturing without problems dosen't exist.Gelled propane will bring more damage to the reservior than the water. And the waste of the gelled propane is also diffcult to deal with.
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