Factors influencing HPAM solution viscosity prepared by produced water using orthogonal method

Abstract

The effect of temperature and metal ion components on the viscosity of HPAM solution was studied by means of orthogonal method. Five factors and 4 levels were considered for the orthogonal design. The five factors included temperature, contents of Na+, Mg²⁺, Ca²⁺ and S²⁻, and the four levels mainly considered the level of produced water components in main oilfields in China. The experiment results show that temperature is the most important factor to control HPAM solution viscosity prepared by produced water. The effect of ions was in order of Na⁺>S²⁻>Mg²⁺>Ca²⁺. The mechanism of each factor influencing viscosity was also discussed. Based on the actual condition of Nanyang oilfield, the desulfurization was used to improve the solution viscosity, and satisfactory result was obtained.

Keywords

polymer / viscosity / oil produced water / orthogonal method / O₃

References

[1] YangH.-j., LuoP.-ya.. Factors for and control of polymer degradation in recycled produced water solutions [J]. Oilfield Chemistry, 2005, 22(2): 158-162

[2] LiuY.-wen.. Influence of salinity on the viscosity of hydrophobic associated polymer solution [J]. Petroleum Geology and Recovery Efficiency, 2003, 10(3): 62-64

[3] ZhanY.-l., GuoS.-h., YanG.-xu.. Study on degradation of partially hydrolyzed polyacrylamide [J]. Polymer Bulletin, 2004, 4: 70-74

[4] YaoH., ZhangZ.-jian.. The oily sewage matches the note polymer applied research [J]. The Oil-Gas Field Ground Project, 2007, 26(5): 3-4

[5] KangW.-l., MengL.-w., NiuJ.-g., XuD.-ping.. Mechanism of the effect of salinity on HPAM solution viscosity [J]. Polymer Materials Science and Engineering, 2006, 22(5): 175-177

[6] XuF., YinX.-qing.. The compatibleness and scaling of recycled injection water at dagang oil field [J]. Journal of Pingdingshan University, 2007, 22(5): 77-79

[7] FanP., WangX.-j., WangX.-y., HuJ.-qing.. Research on demineralization method of wastewater from oilfield [J]. Environmental Science and Management, 2007, 32(1): 90-93

[8] PuP.-cheng.. Present state and development trend of oily waste water disposal in Jidong oilfield [J]. Journal of Chengde Petroleum College, 2007, 9(3): 1-3

[9] ZhangB.-y., ZhangJ.-c., TuW.-L.. Current situation of water injection and its influence on reservoirs in Shengli oilfield [J]. Petroleum Exploration and Development, 2007, 24(3): 364-368