Heavy oil in the oil field development, are often used in the polymer. As the polymer solution is a non-Newtonian fluids, shear viscosity by mechanical losses, and transmission media requirements of polymer conditioning Ball full or total clearance, otherwise it will create a lot of polymer shear, usually 1 polymer pump can only give a polymer injection wells. 1 Note that the pump can only be together for a polymer injection well to provide polymer mother liquor. Polymer injection pump displacement if the polymer injection well than the required amount of polymer mother liquor, mother liquor volume appeared in the case of ultra-Note; if hit return, then the shear caused by polymer substantially at the same time due to wear and tear caused by the emergence of the ball valve endoleak.
Since the last century 90's technology in polymer flooding pilot test has been up to promote the use of industrialization, the problem has never been solved, the equipment manufacturers have also been low shear valve development, have not been successful, as a process of polymer flooding an outstanding technical problems. With the balance of low-shear cut-off valve The successful development of a polymer injection pump 1 to the number of wells at the same time for the poly, multi-pump for the multi-poly injection wells.
The use of cone-shaped spool valve design, fluid channel for the arc-shaped, valve core and valve seat in the department's application of the seal surfacing alloy materials, with strong resistance to erosion, and to ensure that the valve seal. Transmission system using step-down valve sealing technology to ensure flexibility in the regulation of the valve to balance the purpose of regulation.
August 2005, a balanced low-shear cut-off valve in the Second District Gudong polymer test station, achieved the polymer 1 can pump two wells at the same time to provide the mother liquor. More than half a year after testing, that the mother liquor regulation valve with high accuracy, the site is easy to operate, high-viscosity retention characteristics. Sample testing at the scene showed that the valve opening in wide-open, 2 / 3, 1 / 2, 1 / 4, viscosity retention rate in more than 98%.
Site operation, flow through the standby pump, adjusting the valve opening, so that on one polymer polymer pump excess mother liquor wells required for the process to achieve a number of multi-well pump for the polymer of the mother liquor increased polymer pump operating efficiency and utilization.
Statistics show that a balanced low-shear cut-off valve in the injection of poly-scale field test to put the application, marking one of the multi-well pump, multi-multi-well pump for polymer technology is getting more mature, with good prospects for the popularization and application.
Since the last century 90's technology in polymer flooding pilot test has been up to promote the use of industrialization, the problem has never been solved, the equipment manufacturers have also been low shear valve development, have not been successful, as a process of polymer flooding an outstanding technical problems. With the balance of low-shear cut-off valve The successful development of a polymer injection pump 1 to the number of wells at the same time for the poly, multi-pump for the multi-poly injection wells.
The use of cone-shaped spool valve design, fluid channel for the arc-shaped, valve core and valve seat in the department's application of the seal surfacing alloy materials, with strong resistance to erosion, and to ensure that the valve seal. Transmission system using step-down valve sealing technology to ensure flexibility in the regulation of the valve to balance the purpose of regulation.
August 2005, a balanced low-shear cut-off valve in the Second District Gudong polymer test station, achieved the polymer 1 can pump two wells at the same time to provide the mother liquor. More than half a year after testing, that the mother liquor regulation valve with high accuracy, the site is easy to operate, high-viscosity retention characteristics. Sample testing at the scene showed that the valve opening in wide-open, 2 / 3, 1 / 2, 1 / 4, viscosity retention rate in more than 98%.
Site operation, flow through the standby pump, adjusting the valve opening, so that on one polymer polymer pump excess mother liquor wells required for the process to achieve a number of multi-well pump for the polymer of the mother liquor increased polymer pump operating efficiency and utilization.
Statistics show that a balanced low-shear cut-off valve in the injection of poly-scale field test to put the application, marking one of the multi-well pump, multi-multi-well pump for polymer technology is getting more mature, with good prospects for the popularization and application.
