抗220℃高温水基钻井液技术研究  

STUDY ON WATER-BASED DRILLING FLUIDS RESISTING HIGH TEMPERATURE

作　　者：黄治中[1] 杨玉良[1] 马世昌[1] 段利波[1] 

机构地区：[1]西部钻探克拉玛依钻井工艺研究院,新疆克拉玛依834000

出　　处：《新疆石油天然气》2009年第3期52-55,98,共5页Xinjiang Oil & Gas

摘　　要：深井、超深井高密度水基钻井液的热稳定性一直是国内外钻井液行业研究的关键问题之一。为了提高钻井液的抗高温能力,研究了高温对钻井液的影响及相应的技术对策,形成了一套密度为2.00g/cm^3～2.35g/cm^3抗220℃高温的水基钻井液体系。该体系由四类核心处理剂组成:抗高温复合降滤失剂、抗高温降粘剂、润滑封堵防塌剂及高温稳定剂。评价了水基钻井液体系在高温下的高温稳定性、高温高压流变性能、抑制性能和抗污染性能。实验结果表明,该体系具有良好的热稳定性,钻井液经过220℃高温老化后,高温高压滤失量低,流变性好,并具有良好抑制性能和抗盐、钙及钻屑等污染性能。In order to improve the requirements of ultra deep well drilling,a new kind of temperature resisting water - based drilling fluid system with high density(2.00g/cm^3～2.35g/cm^3) was developed on the basis of evaluating various temperature resisting additives for water—based drilling fluids.This drilling fluid can resist 220℃,in which four kinds of additives,And its performances were evaluated.The experimental results show that the newly developed additives,has excellent capacity to resist temperature and coordinate with other additives. It can control the high temperature and high pressure(HTHP) filtration effectively by increasing the stability of drilling fluids suspension.The properties of high density drilling fluid to resist high temperature were stable after aging at 220℃.It is not only excellent in HTHP rhelogical properties and filtration control ability,but also has strong inhibitive character and anti - contamination ability.

关 键 词：水基钻井液 高温去水化 氧化降解 高温交联 抗温对策 抗温能力 

分 类 号：TE254[石油与天然气工程—油气井工程]