The Polymer Gel Profile Control technology is one of the effective way to improve the water injection efficiency and stabilize the reservoir production. In this paper, a series of single factor variable experiments are carried out to study the effects of a number of factors on the polymer gel profile control agent and the polymer gel profile control agent is developed and evaluated for no.4 well area reservoir of the Shinan Oilfield. The results show that in the univariate preconditions, the gel strength increases with the increase of the concentrations of the polymer, the crosslinker, and the stabilizer and decreases with the increase of the concentration of the salinity; the gel time decreases with the increase of the concentrations of the polymer, the crosslinker, the salinity and is essentially unchanged with the variation of the concentration of the stabilizer. The gel strength decreases with the increase of the aging time, the temperature, and the shear strength. The drag coefficient and the residual resistance factor increase with the increase of the injection volume of the polymer gel profile control agent, and the gap between the drag coefficient and the residual resistance factor increases with the increase of the injection volume of the polymer gel profile control agent. The plugging rate rises slowly firstly, then rapidly and remains stabilized at last. The polymer with the 25 million molecular weight of 1500 mg/L, the crosslinker of 0.3%, the stabilizer of 0.1%, the salinity of 26g/L, the injection volume of 0.25 PV of the polymer gel profile control agent and the pre-slug of 0.15 PV + the main slug of 0.25 PV + the postpad slug of 0.1 PV of the injection mode are recommended for no. 4 well area reservoir of the Shinan Oilfield.
WEI Yunyun
,
LUO Litao
,
LIU Xiangui
,
LIU Weidong
,
YANG Zhengming
. Formulation optimization and performance evaluation of polymer gel profile control agent[J]. Science & Technology Review, 2017
, 35(8)
: 88
-93
.
DOI: 10.3981/j.issn.1000-7857.2017.08.011
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