application scope
1、Applicable to development blocks or injection wells with high integrated water content, low recovery level and high residual oil saturation.
2、Water injection wells with good connectivity to the oil wells in the well group.
3、Water injection wells with large vertical differences in the water absorption profile.
technical characteristics
1、Adjustable particle size: it can meet the needs of water plugging and dissection of different permeability strata;
2、Expansion multiplier: 30-200 times, according to the actual situation of the measure well, choose the appropriate expansion multiplier;
3, expansion speed: can be controlled within 10min-180min;
4、Salt resistance: the performance of body-expanding granules is not affected by mineralization, suitable for water plugging and dissection needs of high salt strata;
5、Temperature resistance: can resist high temperature of 120℃;
6、Long-term thermal stability: under the condition of 95℃, no dehydration was found in more than 2 years of investigation, under the condition of 120℃, no dehydration was found in 1 year of investigation, and the thermal stability is not affected by the salt content;
7, shear resistance: by high-speed shear, the apparent viscosity retention rate of only 21-22%; in the 5-60 minutes after shear, the viscosity recovery rate reached more than 75%, after which the recovery tends to smooth out, but can not be completely restored. In the shear rate range of 0.3-300s-1, the hydrophobic-bonded polymer solution exhibited shear thinning properties.
technical advantage
The deep composite dissection technology adopted by our company has formed a complete set of dissection process according to the stratigraphic conditions, dissection agent performance and construction process requirements, which can effectively solve the various problems encountered in dissection.
