据能源之声11月29日消息称,Tendeka公司开发了一种新的聚合物处理方法,可以将页岩油藏采收率提高250%。
该公司在其ShaleModifier技术上投入了数十万的资金,预计在未来两年内将带来数百万英镑的收入。
当盐水水滴与硅酸盐地层岩石表面形成氢键网络,产生额外的毛细压力时,就会产生对非常规地层流动的阻力。
如果阻力足够大,就会限制从破碎岩层中流出的烃流量。
ShaleModifier中的聚合物与岩石表面结合,以提高原油的回流和流量。
它们可以很容易穿透细至100纳米(nm)、压差低至225 psi的的孔隙网络。
ShaleModifier可以作为水力压裂之前的初次完井的一部分进行泵送,也可以作为修井作业挤入地层中。
Tendeka北美和南美副总裁Suzanne Stewart表示:“由于需要收紧支出,人们对技术的需求仍在继续,这种技术能够以经济的速度成倍提高较低的采收率。”
“与纳米表面活性剂和其他相对渗透率改变化学物质不同,ShaleModifier牢牢地附着在裸露的岩石上,与岩石表面形成共价键,从而改变了表面能,并提高并延长了油流的采收率。”
曹海斌 摘译自 Energy Voice
原文如下:
Tendeka polymer tech to boost shale gas recovery 250%
Tendeka has developed a new polymer treatment to increase recovery from shale reservoirs by 250%.
The firm invested a six-figure sum on its ShaleModifier technology, which is expected to return several million pounds in revenue over the next two years.
Resistance to flow in unconventional formations is created when droplets of brine form hydrogen bonded networks with the surface of the silicate formation rock creating additional capillary pressure.
If the resistance is large enough, it can restrict hydrocarbon flow rates out of the fractured rock formation.
The polymers in ShaleModifier bond to the rock surface to enhance oil flowback and flowrates.
They readily penetrate a pore network size as low as 100 nanometres (nm) with pressure differentials as low as 225 psi.
ShaleModifier can be pumped as part of the initial completion ahead of the hydraulic fracture or as a workover squeezed into the formation.
Suzanne Stewart, Tendeka’s VP North & South America, said: “With the need to tighten up expenditures, there continues to be an appetite for technology that can exponentially increase low recovery factors at economical rates.
“Unlike nano surfactants and other relative permeability modifying chemistries, the ShaleModifier firmly attaches itself to the exposed rock forming a covalent bond with the surface, thereby changing the surface energies and enabling increased and prolonged oil flow recovery.”
(来源:未知)
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