KL2-H1水平井高密度饱和盐水混油钻井液技术

Huanqing ZHANG,Lin CHEN,Wenting HE,Songfa YU,Zhiqiang LV,Yi LIU, chunhe ZHANG,Shanbo ZHAO

Drilling Fluid and Completion Fluid（2009）

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Abstract

KL2-H1井是西气东输2007年在克拉区块的一口水平井.该井三开段为高压盐膏层,四开段为白云岩高压气层;钻井液密度为2.00～2.25 g/cm<'3>,压井液密度为2.40 g/cm<'3>,使用混10%～15%原油基液,固相含量相对高,且容量限低,同时由于带POWVER或MWD定向工具钻进,只能使用重晶石加重,使得钻井液的流变性较差,现场施工困难.经过室内实验,研究出了一套适用于现场要求和用重晶石加重的流变性较好的高密度饱和盐水钻井液和压井液配方.现场应用表明,该钻井液的各项性能均能很好地满足钻进要求.

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Key words

Drilling fluid formulation,High density drilling fluid,Horizontal well,Rheology,Saturated saltwater drilling fluid

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