磺酸盐系列孪连表面活性剂的合成与驱油性能  

Synthesis and Performance Properties of Sulfonate Gemini Surfactants DTM(12-s-12) for EOR

作　　者：赵田红[1] 胡星琪[1,2] 王忠信 赵法军[4] 

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]油气藏地质及开发工程国家重点实验室(西南石油大学),四川成都610500 [3]中国石油大庆油田公司第一采油厂,黑龙江大庆163000 [4]提高采收率教育部重点实验室(大庆石油学院),黑龙江大庆163318

出　　处：《油田化学》2008年第3期268-271,280,共5页Oilfield Chemistry

基　　金：四川省应用化学重点学科建设项目"双子表面活性剂的研究"(项目编号SZD0413)

摘　　要：由二元胺、2-溴乙基磺酸钠、月桂酰氯等合成了N，N’-烷撑双[N-乙磺酸-十二酰胺]钠盐，[简记为DTM（12-s-12）]或12-s-12，s=2，4，6。介绍了实验室合成程序。以12-4-12为例，指认了合成产物的红外特征吸收。12—2—12、12—4—12、12—6—12 25℃时的临界胶束浓度Cm,cr从表面张力曲线求得的值分别为4．81×10^-4、5．67×10^-4、6．75X10^-4 mol／L。12-s-12可使亲水玻璃表面接触角（41°）变小，表面更亲水，使亲油玻璃表面接触角（120°）变小，变亲水，改变表面润湿性的能力强于普通表面活性剂TLS和DTAB，且以12—2—12为最强。在60℃测定了12-s-12／疏水缔合聚合物AP-P4（2g／L）SP体系、Na2CO3（10g／L）／12-s-12／AP-P4（2g／L）ASP体系与黏度12．89mPa·s的模拟油之间的界面张力，SP体系在12一s-12浓度高于C。。以后界面张力趋于稳定，维持10^-2mN／m，ASP体系有较宽的超低界面张力区，最低值在Cm．cr附近，按界面活性排列顺序为：12—2—12〉12-4-12〉12—6—12。配制P体系（2g／L）及12-2-12浓度为0．35g／L的SP和ASP体系，在60℃以0．3PV的段塞注入水驱后的填砂管（长34cm，水测渗透率1．3～1．4时），采收率分别提高19．75％，31．64％，37．21％。图4表3参6。N, N-alkylene bis[ N-（sodium ethylenesulfonate） dodecylamides], DTM（12-s-12） or 12-s-12 shortly, are synthesized from alkylenediamine （s）, 2-bromoethylenesulfonate, and lauryl chloride as starting materials. The synthetic procedure is described. The characteristic IR absorption bands are assigned for 12-4-12 as a presentative of 12-s-12. The cmc values of 12-2-12, 12-4-12, and 12- 6-12 at 25℃ obtained by using surface tension-concentration relationships are of 4.81 × 10^-4, 5.67 × 10^-4, and 6.75 × 10^-4 mN/ m, respectively. Geminis 12-s-12 decrease the contact angle on a hydrophilic glass surface （original value 41°）, making it more and more water wetting, and on an oleophilic glass surace （120°）, making it water wetting; the wettability alternation capability （WAC） of these geminis is more stronger than that of common surfactant TLS and DTAB with 12-2-12 possessing the strongest WAC. The IFT values with a simulation oil of μ= 12.89 mPa＇s are measured at 60℃ for 12-s-12/AP-P4（2 g/L）/water, or SP, systems and Na2CO3 （10 g/L）/12-s-12/AP-P4（2 g/L）/water, or ASP, systems, in which AP-P4 is a hydrophobically associating polymer, and it is shown that the IFT of SP systems decreases to a steady value of magnititude 10^-2 mN/m when the 12-s-12 concentration is above its crnc and ASP systems, wider ultralow IFT zones of 10^-3 mN/m are observed with a minimum located near the cmc of the 12-s- 12; these geminis are arranged in interracial activity in order： 12-2-12〉12-4-12〉12-6-12. Oil saturated sandpacks （0.34 m long, of water phase permeability 1.3--1.4μm^2） are waterflcoded for oil recovery until 98% watercut reached and then are treated by 0.3 PV of a polymer （2 g/L AP-P4） an SP or an ASP slug, containing 0.35 g surfactant 12-2-12 per liter, followed by water flood to give an enhancement in oil recovery of 19.75%, 31.64% or 37.21%, respectively.

关 键 词：孪连表面活性剂 双磺酸盐 驱油表面活性剂 合成 界面活性 润湿性能 低界面张力体系 复合驱油体系 

分 类 号：O647.2[理学—物理化学] TE39[理学—化学]