CAJ | 학술논문

我国未来深部大陆科学钻探计划深度为13000 m，温度梯度按3．0℃/100 m计算，井底温度将达到390℃以上，钻井液将面临超高温高压环境，钻井液技术将面临严峻考验。为此，开展了超高温钻井液的预研究，利用抗盐粘土、抗高温降滤失剂、抗高温解絮凝剂、抗高温保护剂等，研制了可用于230℃高温环境的饱和盐水钻井液配方。室内评价试验表明，用该配方配制的耐高温钻井液经230℃、16 h高温滚动老化后，具有良好的流动性能，高温高压失水量（210℃、3．45 MPa）＜35 mL/30 min。
아국미래심부대륙과학찬탐계화심도위13000 m，온도제도안3．0℃/100 m계산，정저온도장체도390℃이상，찬정액장면림초고온고압배경，찬정액기술장면림엄준고험。위차，개전료초고온찬정액적예연구，이용항염점토、항고온강려실제、항고온해서응제、항고온보호제등，연제료가용우230℃고온배경적포화염수찬정액배방。실내평개시험표명，용해배방배제적내고온찬정액경230℃、16 h고온곤동노화후，구유량호적류동성능，고온고압실수량（210℃、3．45 MPa）＜35 mL/30 min。
The planned depth of future continental scientific drilling program is 13000m, based on the geothermal gradient of 3℃/100m, the bottom hole temperature will reach more than 390℃, so the drilling fluids technology will face a severe challenge to be applied in an extremely high temperature and high pressure environment.In this case, the pilot study was carried out on the ultra high temperature drilling fluid, with salt resistant clay, high temperature filtration reducer, high temperature deflocculant and high temperature protective agent, the saturated salt water drilling fluid composition was devel-oped, this drilling fluid could work in the environments of more than 230℃.The indoor evaluation test demonstrated that this drilling fluid can still keep good flowing property and the water loss is less than 35mL/30min after 230℃rolling aging test for 16 hours.