2 results about "Leak rate" patented technology

The invention provides a walking beam type pumping unit working system combined operation method and belongs to the field of oil production engineering. According to the theoretical whole pumping number in a cycle, the crank whole-cycle operation frequency, the used time of operation of each whole cycle, the crank non-whole-cycle swabbing operation frequency, the swabbing operation polished rod stroke of each non-whole cycle, the used time of swabbing operation of each non-whole cycle, the crank non-whole-cycle swabbing-free operation frequency, the used time of swabbing operation of each non-whole cycle and the sequence of crank whole-cycle operation, crank non-whole-cycle swabbing operation and crank non-whole-cycle swabbing-free operation are distributed. According to walking beam type pumping unit working system combined operation method, the whole-cycle jig frequency does not need to be decreased, solving of the problems that the leak rate of a plunger is large and the driving efficiency of a motor is low is facilitated, the requirement of starting up for operation is avoided, and consumption, of the manpower, materials and financial resources, caused by the fact that people go to a construction site to conduct starting-up for operation is reduced disadvantageously; and meanwhile the safe warning requirement can further be met, a crank is made to swing obviously, and the swabbing movement requirement for sand jamming, wax deposit, frozen blocking and laying problems is taken into consideration.