两性离子钻井液成膜封堵剂的研制及性能研究
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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 N,N,N-triethylprop-2-en-1-aminium chloride( TEAC) as raw material. Combination the advantages,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,p H value was 7,reaction temperature was50 ℃,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-8was better than some film-forming sealer.
AM/AS/TEAC copolymer was synthesized by using acrylamide( AM),sodium allylsulfonate( AS) and N,N,N-triethylprop-2-en-1-aminium chloride( TEAC) as raw material. Combination the advantages,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,p H value was 7,reaction temperature was50 ℃,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-8was better than some film-forming sealer.
引文
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[2]曹成,蒲晓林,王贵,等.水基钻井液用防塌封堵剂封堵效果实验研究[J].应用化工,2015,45(4):247-249.
[3]Osuji C E,Chenevert M E,Sharma M M.Effect of porosity and permeability on the membrane efficiency of shales[J].SPE 116306,2008.
[4]Zhan J G,Al-Bazali T M,Chenevert M E,et al.Factors controlling the membrane efficiency of shales when interacting with water-based and oil-based muds[J].SPE100735,2006.
[5]宋春雷,安会勇,张文德,等.P(AM/AMP S/NVP)降失水剂合成与耐温性能研究[J].应用化工,2009,38(9):1254-1256.
[6]Al-Yami A S,Schubert J.Using bayesian network to model drilling fluids practices in Saudi Arabia[J].SPE152096,2012.
[7]Schlemmer R,Friedheim J E,Growcock F B,et al.Polnaszek membrane efficiency in shale——An empirical evaluation of drilling fluid chemistries and implications for fluid design[J].IADC/SPE 74557,2002.
[8]Terry H,Minh T,Son H,et al.Direct strength measurements of shale interaction with drilling fluids[J].SPE117851,2008.
[9]Rwssell T Ewy,E Keith M.Wellbore-stability performance of water-based mud additives[J].SPE 116139,2008.
[10]Simpson J P,Walker T O,Aslakson J K.Studies dispel myths,give guidance on formulation of drilling fluids for shale stability[J].IADC/SPE 39376,1998.
[11]Hemphill T.Drilling with a balanced-activity invert emulsion fluid in shale:Is it sufficient for maintaining or enhancing wellbore stability?[J].SPE 145969,2011.
[12]Xiao Y H,Chen J H,Fang M,et al.Antibacterial effects of three experimental quaternary ammonium salt(QAS)monomers on bacteria associated with oral infections[J].Journal of Oral Science,2008,50(3):323-327.
[13]Schlemmer R,Friedheim J E,Growcock F B,et al.Membrane efficiency in shale——An empirical evaluation of drilling fluid chemistries and implications for fluid design[J].IADC/SPE 74557,2002.
[14]Steve Y,Jim F,John L,et al.A new generation of flat rheology invert drilling fluids[J].SPE 154682,2012.
[15]Meghan R,Steve Y,Guido D S.Wellbore stability in unconventional shale——The design of a nano-particle fluid[J].SPE 153729,2012.
[16]艮文娟,马文石,孙海燕.两性分子P(AMPS-co-DMC)的合成、表征及性能研究[J].应用化工,2009,38(6):850-853.
[17]都伟超,梁发书,景梅,等.三乙基烯丙基氯化铵的合成与表征[J].化学试剂,2013,35(11):1045-1047,1050.
[18]都伟超.油气田开发储层保护成膜封堵剂的研制与性能研究[J].成都:西南石油大学,2014.