深水油田新型酸化工艺探索  

Exploration of New-type Acidizing Technology for Deepwater Oilfield

作　　者：李斌 祁万军[2] 苏东海[2] Li Bin;Qi Wanjun;Su Donghai(CNOOC Petroleum International Co., ltd. Beijing, 100027;Engineering Technology Company, CNOOC Energy Development Limited Liability Company, Beijing, 100027)

机构地区：[1]中国海洋石油国际有限公司,北京100027 [2]中海油能源发展股份有限公司工程技术公司,北京100027

出　　处：《当代化工研究》2017年第3期87-88,共2页Modern Chemical Research

摘　　要：酸化压裂技术现今正被国内外油田企业普遍运用,能够达到增注增产的目的。这种技术主要是用酸液作为压裂液,不再使用支撑剂直接压裂,就是我们所说的酸化压裂。压裂的原理在水的压力下,酸液腐蚀油气层产生裂缝,酸液和水的共同作用使裂缝表面变得凹凸不平,这样的裂缝具有很强的导流能力,提高了底层的渗透能力,达到石油增产的目的。因此,为了提高石油、天然气的产量,压裂技术的运用是必不可少的。地层具有不均一性,往往有渗透率极低的地层。为了改善生产层位的地层物性,提高渗透性,油田中经常往地层中注入酸液与地层岩石反应。Acidizing and fracturing technology is getting common application in the oil field enterprises at home and abroad and it can help achieving the purpose of production and injection increase.This technology is mainly applied by using the acid liquor as fracturing liquid and no more using the propping agent to take directly fracturing,which is the so called acidizing fracturing.The theory of fracturing is under the water pressure,the acidizing liquor corrodes the oil-gas layer and produces the crack,besides,under the combined action of acidizing liquor and water,it makes the fracturing surface be uneven and such crack has strong flow conductivity and improves the infiltration capacity of bottom layer,finally achieve the purpose of oil output increase.Therefore,in order to improve the output of petroleum and natural gas,the application of fracturing technology is of the essence.The stratum has the feature of nonuniformity and usually there is stratum of extremely low permeability.In order to improve the physical property of producing layer and increase the permeability,it is often to inject acid liquor into the stratum of oilfield to react with the stratum rock.

关 键 词：深水 酸化作业 

分 类 号：T[一般工业技术]