摘要
针对高温、高密度油包水逆乳化钻井液降滤失量大的问题而研制出一种新型抗高温油基钻井液降滤失剂。这种降滤失剂采用胺化合物对腐植酸进行改性 ,得到一种亲油性的腐植酸衍生物 ,所得的腐植酸衍生物经进一步热裂解处理后 ,得到抗温能力达 2 2 0℃、运用于超高密度 2 .38g/cm3 的油基钻井液降滤失剂XNTROL 2 2 0。此降滤失剂在油中具有良好的分散能力 ,在油包水逆乳化泥浆中具有明显的降滤失效果 ,同时具有稀释降粘。
To solve the problem of high fluid loss of invert emulsion drilling fluid (water in oil ) under an elevated temperature(220℃)and high density(2.38g/cm 3),a new fluid loss additive(FLA) XNTROL220 of oil base drilling fluid has been developed.XNTROL220 was prepared by pyrolyzing a lipophlic humic acid derivative (in inert gas) which was obtained by reacting a hydrophilic humic acid with amine. This FLA has good dispersion capacity and can reduce the fluid loss significantly in the invert emulsion drilling fluid. It can also be used as second emulsifier and thinner in oil base fluid systems.
出处
《西南石油学院学报》
CSCD
2000年第4期61-64,共4页
Journal of Southwest Petroleum Institute
基金
国家高科技重点项目"高性能优质钻井液完井液的研制"(863-07-01)。
关键词
逆乳化钻井液
降滤失剂
腐植酸衍生物
高温
裂解
invert emulsion drilling fluid
filtrate reducer
elevated temperature
pyroly
