A New System Of Temperature And Salt Resistance Of Crosslinked

In this paper, geological conditions in an oil field in eastern complex reservoir heterogeneity serious, high reservoir temperature (between the80-130℃), high formation water salinity (salinity of10～35×104mg/L) harsh high-temperature high-salt reservoirs. After water injection into the high-water period of the oil field, there is more difficult in enhancing oil recovery. To improve the effects of the development of secondary development of harsh oil fields,to address the reservoir heterogeneity, enhanced oil recovery, developed a new type of temperature salt crosslinking system. Under harsh reservoir geology, reservoir characteristics in laboratory experiments to study the temperature and salt resistance based crosslinking system technical requirements, including requirements for cross-linking system, the requirements of the polymer and the crosslinking agent requirements. Same physical and chemical properties of polymers, such as cross-linked viscosity factors, factors affecting system performance, research done indoors, and the cross-linking of the performance was evaluated, and finally developed a block down to meet the reservoir conditions, transfer requirements drive the "cross-linking temperature salt systems" formula optimization.