摘要
为改善目前深井、超深井钻井过程中高温、高压条件下水基钻井液的高温稳定性和高温高压滤失性,优选了聚合单体2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、丙烯酰胺(AM)、丙烯酸(AA)、N-乙烯基吡咯烷酮(NVP)和二烯丙基二甲基氯化铵(DMDAAC),利用氧化-还原引发体系进行水溶液聚合,合成了一种抗高温抗盐降滤失剂HRF。通过测试降滤失性能确定最佳的合成条件为:AMPS、AM、AA、NVP、:DMDAAC摩尔比35∶35∶10∶10∶10,引发剂加量0.15%,反应温度50℃,单体质量分数30%。降滤失剂HRF抗温最高达230℃,抗盐至饱和,抗CaCl_2/MgCl_2可达2%,性能优于国外公司同类产品Driscal D和Dristemp。降滤失剂HRF成功在元坝10-1H井进行了现场应用,有效控制了井浆的HTHP失水,提高了井浆整体的抗温性能,改善了井浆的流变性,防止了高温减稠情况的发生,取得了良好的应用效果。
To improve stability and filtration of water-based drilling fluid at high temperature and pressure in deep and ultra deep well drilling process, salt-resistant fluid loss additive HRF was synthesized by aqueous solution polymerization in an oxidation-reduction initiator system, using 2-acrylamido-2-methyl propionate sulfonic acid （AMPS）, acrylamide （AM）, acrylic acid （AA）, N-vinyl pyrrolidone （NVP） and diallyl dimethyl ammonium chloride （DMDAAC） as comonomers. Optimal synthesis parameters of HRF were chosen as follows： mole ratio of AMP S to AM to AA to NVP to DMDAAC was 35：35：10：10：10, initiator dosage was 0.15%, reaction temperature was 50 ~C and the mass fraction of the comonomers was 30%. The anti-temperature ability of the HRF was up to 230%：, and the salt resistance of the HRF could be up to be saturated, anti-CaC1JMgCl2 was over 2%, which was better than that of the foreign products Driscal D and Dristemp. Filtration loss reducer HRF achieved a successful field application in yuanba 10-1H drilling fluid, the effect indicated that HRF could control effectively HTHP filtration loss of the drilling fluid, improve temperature resistance and rheology of slurry system, and prevent the viscosity of the slurry from reducing under high-temperature.
出处
《油田化学》
CAS
CSCD
北大核心
2016年第2期204-209,共6页
Oilfield Chemistry
关键词
水基钻井液
降滤失剂
抗高温
抗盐
现场应用
water-based drilling fluid
filtration loss reducer
anti-high temperature
salt-resistant
field application
作者简介
李真伟（1985-），男，工程师，西安交通大学应用化学专业学士（2009）、西南石油大学攻读石油与天然气工程专业在职在读工程硕士研究生（2013-），从事油田化学品研究开发工作，通讯地址：621000绵阳市高新区路南工业园区仁智科技产业园，E—mail：li_zhwei@163．corn。
