A kind of fracturing sand mixer

Abstract

The invention provides a fracturing blender truck. The fracturing blender truck comprises a chassis, a sand blending device, a four-connecting-rod mechanism and a power system. The sand blending device is arranged above the chassis and provided with a sand blender, and a closed-type mixing pump serves as the sand blender. The four-connecting-rod mechanism is capable of driving the sand blending device to move to enable a base of the closed-type mixing pump to contact with the ground, a first connecting rod and a third connecting rod of the four-connecting-rod mechanism are arranged on the chassis rotatably, and the sand blending device is arranged on a second connecting rod of the four-connecting-rod mechanism. The power system arranged on the chassis is connected with the first connecting rod and drives the four-connecting-rod mechanism to rotate to enable the closed-type mixing pump to contact with the ground. The fracturing blender truck has the advantages that the closed-type mixing pump serves as the sand blender, and the second connecting rod of the four-connecting-rod mechanism is used for bearing the sand blending device to enable the base of the closed-type mixing pump to be capable of contacting with the ground, so that the height of the closed-type mixing pump is decreased, suction capacity of the closed-type mixing pump is improved, a great quantity of fracturing fluid can be guided out, delivery capacity of the fracturing blender truck is increased, and the requirements on large-scale fracturing operation can be met.

Description

technical field [0001] The invention relates to the technical field of oil production or gas equipment, and more specifically, to a fracturing sand mixing vehicle. Background technique [0002] Fracturing technology refers to a method of using liquid pressure to form cracks in oil and gas reservoirs in the process of oil or gas production. The specific operation is to use high-pressure and large-displacement pumps and use the principle of liquid pressure transmission. A liquid with a certain viscosity (that is, fracturing fluid) is injected into the reservoir at a pressure greater than the absorption capacity of the reservoir, and the pressure in the wellbore is gradually increased, thereby suppressing high pressure at the bottom of the well. When the pressure is greater than that of the well wall When the nearby in-situ stress and the tensile strength of the formation rock, fractures will be generated in the formation near the bottom of the well, and the fracturing fluid wi...

AI Technical Summary

Problems solved by technology

At present, the maximum displacement that this kind of fracturing sand mixing vehicle can achieve is 20m 3 / min, and this displacement cannot meet the current demand for large-scale fracturing operations, so one of the feasible ways is to increase the number of fracturing mixer trucks. However, since many well sites are located in mountainous areas, the well site area Small, unlikely to provide more field for additional frac mixer trucks

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