The Kuqa Piedmont Block in Tarim is an ultra-deep high temperature and high pressure block with the characteristics of deep burial, high temperature and high formation pressure, so conventional fracturing fluids are not favoralole for the construction requirements of this block. To this end, acrylamide (AM), trimethyl (3-acrylamidopropyl) ammonium chloride (APTAC), 3-acryloylethanol-3-methylpropanesulfonic acid (AEMS) were used as monomers to synthesize the polymer thickener JAS-3 with temperature resistance, salt resistance and low damage through the optimization of additives dosage and reaction parameters, and the properties of such polymer thickener were evaluated. The research shows: The polymer fracturing fluid prepared with JAS-3 has good temperature and shear resistance, sand-carrying performance and low damage to the reservoir. After adding NaBr with a mass fraction of 30% to 40%, its viscosity can still be maintained above 85 mPa·s at a temperature of 180 ℃ and a rotation speed of 170 r/s. The polymer fracturing fluid has a large elastic modulus, a small viscosity modulus, a larger rigidity, good sand-carrying performance, and meanwhile it has low residue content after gelout, causing small damage to the reservoir. The fracturing fluid has been tested in 6 wells in the Kuqa Piedmont Block in Tarim, and has achieved good stimulation effects. The development of the thickener has important reference significance for the fracturing of ultra-deep high temperature and high pressure blocks.
Zhang Wei
,
Ren Dengfeng
,
Zhou Jin
,
Liu Shuang
,
Wang Yan
,
Wang Qiao
. Development and Application of Polymer Thickener for Fracturing Fluid with High Temperature and Salt Resistance and Low Damage[J]. Special Oil & Gas Reservoirs, 2022
, 29(6)
: 159
-164
.
DOI: 10.3969/j.issn.1006-6535.2022.06.020
[1] 张厚福,徐兆辉,王露.油气藏研究的发展趋势预测[J].石油学报,2010,31(1):165-172.
ZHANG Houfu,XU Zhaohui,WANG Lu.Prediction of developing trends of reservoir research[J].Acta Petrolei Sinica,2010,31(1):165-172.
[2] 罗炎生,方波,卢拥军,等.耐高温压裂液研究进展[J].油田化学,2018,35(3):545-549.
LUO Yansheng,FANG Bo,LU Yongjun,et al.Research progress of high temperature fracturing fluid[J].Oilfield Chemistry,2018,35(3):545-549.
[3] 高进浩.致密油层滑溜水压裂液减阻剂的合成及应用关键技术研究[D].西安:陕西科技大学,2016.
GAO Jinhao.Research on the key technology of synthesis and application of slick water fracturing fluid drag reducing agent in tight oil reservoirs[D].Xi'an:Shaanxi University of Science and Technology,2016.
[4] 陈效领,李帅帅,苏盈豪,等.一种油田压裂用耐高温聚合物增稠剂PAS-1研制[J].油田化学,2016,33(2):224-229.
CHEN Xiaoling,LI Shuaishuai,SU Yinghao,et al.Development of high-temperature polymer thickening agent PAS-1 for oilfield fracturing fluid[J].Oilfield Chemistry,2016,33(2):224-229.
[5] 吴充实,王越,邱国强.超高分子量聚丙烯酰胺水解干燥条件的研究[J].精细与专用化学品,2002,10(21):39-42.
WU Chongshi,WANG Yue,QIU Guoqiang.Studies on hydrolysis and drying conditions of ultrahigh molecular weight polyacrylamide[J].Fine and Specialty Chemicals,2002,10(21):39-42.
[6] 何良好.聚合物稠化剂制备及超高温压裂液体系流变性能研究[D].上海:华东理工大学,2012.
HE Lianghao.Preparation of polymer thickener and research on rheological properties of ultra-high temperature fracturing fluid system[D].Shanghai:East China University of Science and Technology,2012.
[7] 季鸿渐,孙占维,张万喜,等.丙烯酰胺水溶液聚合添加Na2CO3制取高分子量阴离子型速溶聚丙烯酰胺的研究[J].高分子学报,1994,10(5):559-564.
JI Hongjian,SUN Zhanwei,ZHANG Wanxi,et al.Aqueous polymerization of acrylamide the preparation of water-soluble polyacrylamide wyih high molecular weight using Na2CO3[J].Acta Polymerica Sinica,1994,10(5):559-564.
[8] 孙克时,姚永南,郭永利,等.耐盐抗温水溶性聚合物AM-NaAMPS-DEAM的合成及性能研究[J].精细化工,1998,15(6):24-27.
SUN Keshi,YAO Yongnan,GUO Yongli,et al.Synthesis and properties of salt-resisting,temperature-resisting water-soluble polymer AM-NaAMPS-DEAM[J].Fine Chemicals,1998,15(6):24-27.
[9] 唐浩,田国发,谢代培.抗温耐盐压裂液的研制及评价[J].钻井液与完井液,2009,26(1):60-62.
TANG Hao,TIAN Guofa,XIE Daipei.A high temperature salt resistant fracturing fluid[J].Drilling Fluid & Completion Fluid,2009,26(1):60-62.
[10] 肖晖,郭建春,何春明.加重压裂液的研究与应用[J].石油与天然气化工,2013,42(2):168-172.
XIAO Hui,GUO Jianchun,HE Chunming.Study and application of weighted fracturing fluid[J].Chemical Engineering of Oil & Gas,2013,42(2):168-172.
[11] 肖雯,张茂森,李晓倩,等.加重压裂液体系优选[J].承德石油高等专科学校学报,2016,18(4):25-29.
XIAO Wen,ZHANG Maosen,LI Xiaoqian,et al.Properties of heavy fracturing fluid system[J].Journal of Chengde Petroleum College,2016,18(4):25-29.
[12] SITTIKIJYOTHINA W,SAMPAIOB P,GONCALVES M P.Heat-induced gelation of β-lactoglobulin at varying pH:effect of tara gum on the rheological and structural properties of the gels[J].Food Hydrocolloids,2007,21(7):1046-1055.
[13] WANG S B,TANG H B,GUO J C,et al.Effect of pH on the rheological properties of hydroxypropyl guar gum[J].Carbohydrate Polymers,2016,147(20):455-463.
[14] 郭建春,何春明.压裂液破胶过程伤害微观机理[J].石油学报,2012,33(6):1018-1022.
GUO Jianchun,HE Chunming.Microscopic mechanism of the damage caused by gelout process of fracturing fluids[J].Acta Petrolei Sinica,2012,33(6):1018-1022.
