两性离子钻井液成膜封堵剂的研制及性能研究  

Research and evaluation of zwitterionic film forming sealing agent used in drilling fluids

作　　者：方静[1] 牛晓[1] 何仲[1] 鲍俊锟 王贵[3] 

机构地区：[1]中国石化西北油田分公司石油工程技术研究院,新疆乌鲁木齐830011 [2]中国石油川庆钻探工程有限公司钻采工程技术研究院,四川广汉618300 [3]西南石油大学石油与天然气工程学院,四川成都610500

出　　处：《应用化工》2017年第2期157-162,共6页Applied Chemical Industry

基　　金：国家科技重大专项(2016ZX05053-004-001)

摘　　要：以丙烯酰胺(AM)、烯丙基磺酸钠(AS)和三乙基烯丙基氯化铵(TEAC)为原料,制备了一种两性离子三元共聚物AM/AS/TEAC。复配AM/AS/TEAC和超细碳酸钙(1 250目),得一种针对低渗透油气储层的新型成膜封堵剂QP-8。两性离子三元共聚物AM/AS/TEAC的最佳聚合条件为:单体配比AM∶AS∶TEAC=83∶12∶5,p H为7,反应温度50℃,单体总浓度18%,引发剂用量(Na2S2O8∶Na HSO3=1∶1,摩尔比)为0.4%,反应时间为4 h。以自制可视中压砂管为评价装置,以砂床侵入深度和API滤失量为评价指标,得出AM/AS/TEAC与超细碳酸钙的最佳配比为0.2∶1。评价结果表明QP-8封堵性要好于一些油田已经有所应用的成膜封堵剂。AM/AS/TEAC copolymer was synthesized by using acrylamide （ AM ） , sodium allylsulfonate （AS） and /V,/V,/V-triethylprop-2-en-l-aminium chloride （TEAC） as raw material. Combination the ad-vantages, disadvantages of film forming adsorption and temporary plugging technology, a novel film forming sealing agent QP-8 was compounded by using AM/AS/TEAC and ultrafine calcium carbonate （1 250 mesh） for low permeability reservoirs. The influences of reaction conditions on the fluid loss property of AM/AS/TEAC was studied and the optimal polymerization conditions were obtained as follows the monomer mass ratio of AM/AS/TEAC was 83： 12： 5,pH value was 7,reaction temperature was 50℃ ,total monomers content was 18% ,the initiator（sodium sulfite： ammonium persulfate,molar ratio 1： 1） content was 0.4% and the reaction time was 4 h. Set the sand bed depth of invasion visual medium pressure sand pipe and API filtrate volume as the evaluation means,the best ratio of AM/AS/TEAC and ultra-fine calcium carbonate was obtained as 0. 2： 1. The results of sealing evaluation indicated that QP-8 was better than some film-forming sealer.

关 键 词：三乙基烯丙基氯化铵 成膜封堵剂 两性离子聚合物 屏蔽暂堵技术 

分 类 号：TQ317[化学工程—高聚物工业]