Synthesis and Evaluation of a Sulfonated Biophenol-Modified Resin as a High-Temperature and Environmentally Friendly Filtrate Reducer
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摘要: 针对深井超深井钻井液处理剂抗高温性与环保性难以兼顾的行业痛点，该研究以造纸废液回收木质素为原料，采用碱氧降解-接枝改性耦合工艺，成功制备出一种高温环保型降滤失剂—磺化生物酚改性树脂SMBMP-1。实验结果表明，降滤失剂SMBMP-1具有优异的抗温抗盐抗钙性能，在180 ℃下热滚16 h后，可保持良好的稳定性，使钻井液的高温高压滤失量控制在14.6～15.4 mL；在饱和盐水基浆中，仍能维持较低的高温高压滤失量；在含有3%钙离子的基浆中，SMBMP - 1依然具有良好的降滤失作用，表现出较好的抗污染能力，性能远优于SMP-Ⅱ行业标准（≤35 mL）；环保性测试显示，其EC50值为259 000 mg/L，BOD5/CODcr值为0.23，具备无毒易降解特性。此外，降滤失剂SMBMP-1低黏度效应显著，与钻井液体系配伍性良好。SMBMP-1的研发不仅为深层油气藏钻井提供了高性能储层保护材料，更实现了废弃生物质资源的高值化利用，为钻井液处理剂行业绿色化转型开辟了新路径。Abstract: With the ongoing expansion of oil and gas exploration into deep and ultra-deep wells, alongside escalating demands for green, low-carbon development and cost-effective efficiency, the development of drilling fluid additives that combine high-temperature resistance, low viscosity impact, environmental compatibility, and low cost has emerged as a critical direction for the industry. This study utilized lignin recovered from papermaking waste liquor as the primary raw material to successfully synthesize a high-temperature, environmentally friendly filtrate reducer—sulfonated biophenol-modified resin SMBMP-1—through alkali-oxygen degradation and graft modification processes. Experimental results demonstrate that the additive exhibits temperature resistance up to 180 ℃, salt tolerance to saturation, and calcium resistance of 3%. Its high-temperature, high-pressure fluid loss was only 14.6～15.4 mL, significantly outperforming the SMP-II industry standard (≤35 mL). Regarding environmental performance, it shows an EC50 value of 259,000 mg/L and a BOD5/CODCr ratio of 0.23, indicating it is non-toxic and readily biodegradable. Furthermore, the additive exhibits a low viscosity effect and demonstrates good compatibility within drilling fluid systems. The development of sulfonated biophenol-modified resin provides robust product support for rheological control and wellbore stability in deep and ultra-deep well drilling. It also holds significant importance for promoting the high-value utilization of biomass resources in the drilling fluid industry.
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Key words:
- Deep and ultra-deep wells /
- Drilling fluid /
- Filtrate reducer /
- Lignin /
- Biophenol-modified resin
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表 1 SMBMP-1与SMP-Ⅱ性能对比
产品 AV/
mPa·sFLHTHP/
mL产品 AV/
mPa·sFLHTHP/
mLSMBMP-1 25.0 15.2 SMP-Ⅱ 31.0 24.6 26.5 14.6 32.0 20.8 26.0 15.4 29.0 21.2 平均值 25.8 15.1 30.7 22.2 注：基浆配方为4%膨润土+4%评价土+5%SMC+5%SMK+30%NaCl+2.5%Na2CO3。 
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表 2 不同老化温度对钻井液性能的影响
T老化/
℃不同样品 AV/
mPa·sPV/
mPa·sYP/
PaGel/
Pa/PaFLAPI/
mLFLHTHP/
mL120 SMBMP-1 32.0 22 10.0 4.0/6.0 1.4 9.6 SMP-Ⅱ 35.5 23 12.5 4.5/6.5 2.2 12.8 150 SMBMP-1 30.0 21 9.0 3.0/4.0 2.0 13.4 SMP-Ⅱ 33.0 23 10.0 3.5/5.0 3.6 17.2 180 SMBMP-1 25.0 20 5.0 2.0/3.0 2.4 22.6 SMP-Ⅱ 29.0 21 8.0 2.5/3.5 2.8 28.0
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表 3 SMBMP-1与SMP-Ⅱ环保性能对比
产品代号 BOD5/CODcr 生物降解性 EC50/
(mg·L−1)生物毒性 SMBMP-1 0.23 较易降解 259 000 无毒 SMP-Ⅱ[5] 0.01 难降解 9700 微毒
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表 4 SMBMP-1与钻井液体系配伍性（150 ℃/16 h）
降滤失剂 AV/
mPa·sPV/
mPa·sYP/
PaGel/
Pa/PaFLAPI/
mLFLHTHP/
mL2%SMBMP-1 47.0 35 12.0 3.0/11.0 1.8 6.8 2%SMP-Ⅱ 49.0 38 11.0 2.5/9.5 2.2 9.6 4%SMBMP-1 51.0 36 15.0 3.5/14.5 1.4 5.2 4%SMP-Ⅱ 53.5 39 14.5 3.0/13.0 1.8 8.4
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