抗高温抗盐降滤失剂 HRF的研制及应用

Synthesis and Application Filtrate Loss Reducer HRF with Temperature Resistance and Salt Tolerance

李真伟 梁大川 彭 波 杨 松 杨 鹤

LI Zhenwei LIANG Dachuan PENG Bo YANG Song YANG He

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 CaCl2/MgCl2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。图6表6参12

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 AMPS to AM to AA to NVP to DMDAAC was 35:35:10:10:10，initiator dosage was 0.15%，reaction temperature was 50℃ 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-CaCl2/MgCl2 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.

10.19346/j.cnki.1000-4092.2016.06.004