Page 216 - 《精细化工》2023年第9期
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第 40 卷第 9 期                             精   细   化   工                                  Vol.40, No.9
             2 023 年 9 月                             FINE CHEMICALS                                 Sept.  2023


              油田化学品与油品添加剂
                        用于中低渗油藏的表面活性聚合物驱油剂



                                 胡   俊    1,2 ,金   诚    2,3 ,施雷庭       1,2* ,郭拥军      2,4

                 (1.  西南石油大学  石油与天然气工程学院,四川  成都   610500;2.  西南石油大学  油气藏地质及开发工
                 程国家重点实验室,四川  成都  610500;3.  西南石油大学  新能源与材料学院,四川  成都  610500;4.  四
                 川光亚聚合物化工有限公司,四川  成都  610500)


                 摘要:以表面活性单体 N-十六烷基-N-磺基丙烯酰胺(NS)、丙烯酰胺(AM)为原料,采用水溶液自由基聚合
                 法制备了低相对分子质量的表面活性聚合物(PAS)。利用 FTIR 对其进行了结构表征,考察了 PAS 作为驱油剂
                 的增黏、乳化、注入、提高采收率相关性能。在 45  ℃、NaCl 矿化度为 2410 mg/L 条件下,质量浓度为 1000 mg/L
                                                                   6
                 的 PAS 溶液表观黏度为 32.6 mPa·s,高于相对分子质量为 8.0×10 的部分水解聚丙烯酰胺(HPAM,18.9 mPa·s);
                 在 PAS 质量浓度为 1000 mg/L 的条件下,其与原油形成的乳液 120 min 析水率为 5.0%,3 次吸附后表观黏度保
                                                                       2
                 留率为 114.11%,吸附后仍具有较好的乳化性;在渗透率为 0.025 μm 的岩心中注入平稳压力为 1.02 MPa;在岩
                                2
                 心渗透率为 0.1  μm 的条件下,PAS 驱能在水驱基础上提高采收率 19.02%,比 HPAM 驱高 5.00%,与 HPAM-
                 碳酸钠-石油磺酸钠三元体系提高采收率相当,仅低 0.58%。
                 关键词:表面活性聚合物;中低渗油藏;聚丙烯酰胺;乳化性能;提高采收率;油田化学品
                 中图分类号:TQ317;TE357     文献标识码:A      文章编号:1003-5214 (2023) 09-2064-09



                            Surface active-polymer flooding agent for medium and
                                             low permeability reservoir


                                          1,2
                                                                                    2,4
                                                      2,3
                                   HU Jun , JIN Cheng , SHI Leiting 1,2* , GUO Yongjun
                 (1. Petroleum  Engineering School, Southwest  Petroleum University, Chengdu 610500, Sichuan, China; 2. State Key
                 Laboratory of Oil and Gas Reservoir Geology and Development Engineering, Southwest Petroleum University, Chengdu
                 610500, Sichuan, China; 3. School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500,
                 Sichuan, China; 4. Sichuan Guangya Polymer Chemical Co., Ltd., Chengdu 610500, Sichuan, China)

                 Abstract: Surfactant-polymer (PAS) with  relative low  molecular  mass was prepared from free radical
                 polymerization of surfactant  monomer  N-hexadecyl-N-sulfoacrylamide (NS) and acrylamide  (AM),
                 characterized  by FTIR, and was investigated as an  oil  displacement agent  for analysis on the related
                 properties such as viscosity increase, emulsification, injection and enhanced oil recovery. At 45  ℃ and
                 NaCl degree  of mineralization  of 2410 mg/L,  PAS solution  with a mass concentration  of 1000 mg/L
                 displayed  an apparent viscosity  of 32.6 mPa·s, which  was higher  than  that of partially  hydrolyzed
                                                                         6
                 polyacrylamide (HPAM) with a relative molecular mass of 8.0×10  (18.9 mPa·s). Meanwhile, the water
                 dissolution  rate of emulsion formed from PAS and crude oil was  5.0% in  120 min, and the apparent
                 viscosity retention rate after three adsorptions was 114.11%, showing good emulsification capacity after
                 adsorption. The stable injection pressure was 1.02 MPa at the standstone core with a permeability of 0.025
                                                      2
                    2
                 μm . When the core permeability was 0.1 μm , PAS flooding improved oil recovery by 19.02% over water
                 flooding,  5.00% over  flooding by  HPAM flooding and comparable to  flooding by  HPAM-sodium
                 carbonate-sodium petroleum sulfonate system, only 0.58% lower.
                 Key words: surface active polymers; medium and low permeability reservoir; polyacrylamide; emulsifying
                 property; enhanced oil recovery; oil field chemicals



                 收稿日期:2022-11-20;  定用日期:2023-04-07; DOI: 10.13550/j.jxhg.20221047
                 作者简介:胡   俊(1993—),男,硕士生,E-mail:549163532@qq.com。联系人:施雷庭(1976—),男,教授,E-mail:slting@swpu.edu.cn。
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