High-power hydraulic drive fracturing pump system

Abstract

The invention relates to a high-power hydraulic drive fracturing pump system which can meet the requirement of high flow and high pressure of a large fracturing pump and can simultaneously solve the problem that a fracturing truck set is difficult to arrange in a well site due to too many vehicles. The technical scheme of the high-power hydraulic drive fracturing pump system is as follows: fracturing pump cylinders and power cylinders are connected in series through bolts; plungers are mounted into the fracturing pump cylinders and the power cylinders; the fracturing pump cylinders are connected with a fracturing fluid inlet manifold and a fracturing fluid outlet manifold; liquid inlet and outlet ports of the power cylinders are connected with a reversing assembly, and the reversing assembly is connected with an oil inlet pipe and an oil return pipe; the oil inlet pipe is connected with hydraulic oil pumps, the oil return pipe is connected with a cooler inlet, and a cooler outlet is connected with a hydraulic line for an oil tank; the oil tank is connected with the hydraulic line for the oil tank; and the hydraulic oil pumps are connected with engines through transmission cases. According to the high-power hydraulic drive fracturing pump system, the power and the discharge capacity of a single fracturing pump truck can be improved by 4-7 times, and accordingly, the number of the fracturing pump trucks is reduced; and a cooler, the oil tank and the hydraulic oil pumps can be arranged outside a well, thereby facilitating the arrangement of the fracturing truck set in the well site.

Description

technical field [0001] The invention relates to a high-power hydraulically driven fracturing pump system for fracturing operations. Background technique [0002] The fracturing crew consists of a fracturing truck, a sand mixing truck, an instrument truck, a manifold truck and a sand truck. Oil and gas well fracturing, especially large-scale fracturing, requires large displacement and high pump pressure, and the maximum displacement can reach 6m 3 / min, the maximum pressure can reach 100MPa. A single fracturing truck is difficult to meet the needs, so the fracturing crew needs multiple fracturing pump trucks to work together, and a fracturing truck crew usually needs to be equipped with 4 to 10 fracturing pump trucks to meet the work needs. For example, the HQ-2000 fracturing and acidizing unit designed and manufactured by Halliburton in the United States includes 10 fracturing pump trucks, 1 sand mixer truck, 2 manifold trucks and 1 instrument truck. In oil and gas well s...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of the existing fracturing pump trucks, such as small displacement, heavy weight, and high requirements on road load capacity and slope, as well as too many pump trucks for fracturing trucks, complex manifolds, and limited space in the well site. Disadvantages of difficult layout

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