抗高温无固相钻井液技术  

High Temperature Solid-free Drilling Fluid Technology

作　　者：李建军[1] 王中义[1] 

机构地区：[1]大庆钻探工程公司钻井工程技术研究院,黑龙江大庆163413

出　　处：《钻井液与完井液》2017年第3期11-15,共5页Drilling Fluid & Completion Fluid

基　　金：大庆油田公司项目"大庆油田抗高温抗盐钻井液技术研究与应用"

摘　　要：针对钻井液易高温变性的特点,通过研制出耐高温增黏剂XCC、降滤失助剂AADC、封堵剂FSCC,设计出一种无固相抗220℃超高温的钻井液配方。具体加量配比为2%XCC+1%AADC+3%SPNH+1%SMP+3%FSCC+0.5%Na2SO3。并对其进行性能表征,SEM显示其页岩层状微裂缝及碎片得到了明显封堵与修饰,在泥页岩表面形成与微裂缝方向平行的致密树状聚合层;FT-IR结果表明,该抗高温钻井液经过220℃高温老化后性能稳定,具有良好的流变性能和滤失造壁性能,抑制和润滑性能满足钻井需要;能抗10%黏土与5%钻屑的污染,同时对10%KCl+20%Na Cl的盐溶液也有较好的抵抗能力;该钻井液EC50的检测结果大于80 000 mg/L,达到了建议排放标准。最终抗220℃超高温钻井液XCC/AADC/SPNH/SMP/FSCC在涩北1号气田24井得到了成功应用。A solid-free drilling fuid having stable properties at 220 ℃ has been developed with high temperature additives such as XCC （viscosifer）, AADC （flter loss reducer） and FSCC （plugging agent）. The detailed composition of the drilling fuid is 2%XCC＋1% AADC＋3%SPNH＋1%SMP＋3%FSCC＋0.5%Na2SO3. SEM experiment showed that shale cores taken from a well drilled with this drilling fuid had layered micro-fractures apparently plugged, and a dense tree-like polymer layer parallel to the direction of the micro-fractures was found on the surface of the shale cores. FT-IR experimental results showed that, after aging at 220 ℃, the drilling fuid still had stable mud properties, good rheology and fltration properties. The inhibitive capacity and lubricity of the drilling fuid can satisfy the needs of drilling operation. This drilling fuid was able to tolerate the contamination from 10% clay and 5% drilled cuttings, or from 10%KCl＋20%NaCl salt solution. The LC50 of the drilling fuid measured was 80,000 mg/L, conforming to the stipulated discharge criteria. The drilling fuid has been successfully used to drill the Well 24 located in the Sebei-1 gas feld.

关 键 词：抗高温 无固相 钻井液 XCC/AADC/SPNH/SMP/FSCC 流变性 

分 类 号：TE254.3[石油与天然气工程—油气井工程]