CAJ | 학술논문

为了使钻井液体系在泥页岩等地层井壁成膜以稳定井壁，利用乳液聚合合成了AM-VAc-St三元共聚物，根据红外光谱确定了三元共聚物的结构。通过泥球浸泡实验考察了成膜剂的成膜性能；测量粘度变化考察其乳液稳定性、机械稳定性、稀释稳定性及抗钙离子稳定性；并利用失水造，壁性评价试验考察其API失水量。结果表明，成膜剂在泥球表面成膜抑制性较好，泥球吸水量只有43.38％，远低于泥球在其他抑制剂溶液中浸泡时的吸水量；乳液在经过搅拌、稀释及加盐后剪切粘度变化均在合理范围内，不超过20％； API失水量为7.5 mL，比聚乙烯醇复配钻井液失水量8.4 mL低，且比CNPC行业标准规定的8 mL低。
위료사찬정액체계재니혈암등지층정벽성막이은정정벽，이용유액취합합성료AM-VAc-St삼원공취물，근거홍외광보학정료삼원공취물적결구。통과니구침포실험고찰료성막제적성막성능；측량점도변화고찰기유액은정성、궤계은정성、희석은정성급항개리자은정성；병이용실수조，벽성평개시험고찰기API실수량。결과표명，성막제재니구표면성막억제성교호，니구흡수량지유43.38％，원저우니구재기타억제제용액중침포시적흡수량；유액재경과교반、희석급가염후전절점도변화균재합리범위내，불초과20％； API실수량위7.5 mL，비취을희순복배찬정액실수량8.4 mL저，차비CNPC행업표준규정적8 mL저。
In order to stabilize borehole wall with film formation in the system , AM -VAc -St terpolymer was polymerized by emulsion polymerization.The film forming properties was evaluated by the mud balls experiment , including emulsion stability , mechanical stability and dilution stability , and the stability of the anti -calcium ion was researched by measuring viscosity change.In addition , its API was tested by dehydration walls.The results showed that the film -forming agent can surface well on the mud ball , only 43.38% of the amount of water absorption of the mud ball , much lower than soaked in the solution of other inhibitors.The shear viscosity changed within reasonable limits , not exceed 20%after mixing, dilution and addition salt.API value was 7.5 mL, lower than polyvinyl alcohol complex (8.4 mL) and the industry standard of CNPC (8 mL).