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封隔液及其应用现状研究 被引量:10

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摘要 封隔液是一种常用的完井液,一般具有防腐及平衡压力的作用,需要其本身具有长期稳定性、防腐性、保护储层性,作为隔热性封隔液,还需具有良好的隔热性能。与气体型和油基封隔液相比,水基型封隔液应用最多。无机盐型水基封隔液在低温、腐蚀性要求较低的油气井应用广泛;有机盐型封隔液在密度需求较高、井下高温高压或高酸性气井中应用效果好。近年来国外研究并现场应用了碳酸钾和磷酸盐封隔液,具有潜在的推广应用价值。当前研究应用最多的是隔热性水基封隔液,具有提高油气产量以及保证油气井完整性的作用,在热采井、深水井及永久冻土油气井中具有广泛的应用前景。
出处 《长江大学学报(自科版)(上旬)》 CAS 2012年第12期86-89,共4页 JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI & ENG
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参考文献15

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二级参考文献4

共引文献44

同被引文献71

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