CAJ | 학술논문

Halfaya油田地质复杂，高压盐膏层钻进过程中极易发生泥包、蠕变缩径、高密度钻井液被高浓度Ca2+污染等问题，钻井液维护难点在于抑制软泥岩分散、稳定pH值、除Ca2+相互关联。通过优选和优化钻井液处理剂，引入聚胺盐类抑制剂BZ-HIB和新型除钙剂BZ-DCA，改进施工技术措施，较好地解决了高密度钻井液流变性控制、除Ca2+、稳定pH值等问题，在提高钻速、降低维护难度等方面效果明显。
Halfaya유전지질복잡，고압염고층찬진과정중겁역발생니포、연변축경、고밀도찬정액피고농도Ca2+오염등문제，찬정액유호난점재우억제연니암분산、은정pH치、제Ca2+상호관련。통과우선화우화찬정액처리제，인입취알염류억제제BZ-HIB화신형제개제BZ-DCA，개진시공기술조시，교호지해결료고밀도찬정액류변성공제、제Ca2+、은정pH치등문제，재제고찬속、강저유호난도등방면효과명현。
The geology of Halfaya Oilifeld is complicated and there tends to be problems such as bit balling, creepage hole shrink-age, pollution of high density drilling lfuid by high concentration Ca2+during the drilling. The dififculties in maintenance of drilling lfuid are inhibition of soft mudstone distribution, stabilization of pH value and elimination of Ca2+. Through selection and optimization of treating agent of drilling lfuid, BZ-HIB and BZ-DCA are introduced and technical measures are improved to solve the problems with control of rheological property of high density mud, stabilization of pH value, and elimination of Ca2+. It has signiifcant effects on in-crease of drilling rate and reduction of dififculty in maintenance.