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大王北油田大52块低渗高凝油藏开发措施
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作者 钱军 程天阁 信德发 《油气采收率技术》 CSCD 1999年第2期29-33,共5页
大52块是一个油层深且薄、低渗透、天然能量不足的油田,原油具有凝固点高和含蜡量高的特点。自1993年以来,为改善油藏的整体开发效果,先后采取了水力泵深抽工艺,柱塞泵高压注水工艺,油藏整体压裂改造工艺和油藏监测技术。通... 大52块是一个油层深且薄、低渗透、天然能量不足的油田,原油具有凝固点高和含蜡量高的特点。自1993年以来,为改善油藏的整体开发效果,先后采取了水力泵深抽工艺,柱塞泵高压注水工艺,油藏整体压裂改造工艺和油藏监测技术。通过四项配套技术的应用,提高了油井的产能,使该块的开井时率达96%,累计生产原油303571t;使该油田的平均日产油水平由65t/d上升到212t/d。 展开更多
关键词 水力活塞泵 高压活水 压裂 稠油 低渗透油藏
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Regeneration of grinding wheel active surface using high-pressure hydro-jet
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作者 Krzysztof NADOLNY Jaroslaw PLICHTA Pawel SUTOWSKI 《Journal of Central South University》 SCIE EI CAS 2014年第8期3107-3118,共12页
The possibility of applying a high-pressure hydro-jet for renewal of the grinding wheel cutting ability was presented.This work was conducted in the internal cylindrical grinding process of the Titanium Grade 2 alloy,... The possibility of applying a high-pressure hydro-jet for renewal of the grinding wheel cutting ability was presented.This work was conducted in the internal cylindrical grinding process of the Titanium Grade 2 alloy,which belongs to the group of hard-to-cut materials.The analysis shows that the impact on the erosion effectiveness of the grinding wheel active surface(GWAS)depends upon the hydro-jet inclination angle and working pressure.Experimental results reveal that application of hydro-jet working pressure of 25 MPa allows for effective cleansing of the grinding wheel surface.Depending on the initial GWAS condition and the level of its smearing with chips of machined material,it is possible to increase the number of grinding wheel unevenness apexes by as much as 4.5 times. 展开更多
关键词 GRINDING grinding wheels hydro-jet hard-to-cut materials
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