First, what is fracturing pump truck
Fracturing pump truck, as the name suggests, is a pump truck used for fracturing operations. Fracturing is a term in the oil field, meaning that in the process of oil production or gas production, hydraulic action is artificially used to form cracks in oil and gas layers, so as to improve the flow environment of oil in the underground and increase the output of oil Wells. The function of fracturing pump truck is mainly to crack the oil and gas reservoir through pumping water, so as to improve the flow conditions at the bottom of the well, slow down the interlayer and improve the use of the oil reservoir. It is mainly suitable for various fracturing pump fluid injection operations in deep Wells, medium and deep Wells and shallow Wells of oil and gas fields.
Fracturing pump truck is generally composed of chassis, engine, hydraulic transmission box, three-cylinder plunger pump, high and low pressure manifold and liquid gas path operation control system, the main pump is a three-cylinder plunger pump, can adapt to different types of liquid pumping operations, including hydraulic fracturing with proppant fracturing fluid, acid fracturing, high pressure pumping into different liquids (liquid, mixed liquid) and pressure testing.
Second, what is the working principle of fracturing pump truck
Fracturing pump truck is a common engineering machinery used in fracturing technology. After oil well production to a certain stage, productivity and permeability are reduced. In order to enhance oil discharge capacity and increase oil well output, fracturing pump truck will be used to fracturing operations. The principle of fracturing pump truck is:
1. The fracturing pump truck group stops at the position where fracturing operations need to be carried out on the ground of the oil field, and uses the pressure of the pump to inject the fluid into the oil well at a high speed. With the help of the high pressure contained at the bottom of the well, the oil layer rock cracks.
2, fracturing pump truck in pumping liquid, usually in the injected liquid, mixed with sand than the formation density of several times, so that it with the liquid into the crack, this is mainly to prevent the fracturing pump truck stop, the crack because of the pressure drop and close itself, and after the addition of sand, these sand will permanently stay in the crack, support the crack in the open state.
Third, what parameters should be considered in the choice of fracturing pump truck
1. Oil and gas well parameters
Type of fracturing well, well diameter, downhole string, wellhead device, cementing quality, location of perforated interval, perforation mode, bullet pattern, phase Angle, hole density and hole size, downhole tool specification, size, rated pressure, temperature and location, etc.
2. Oil and gas reservoir parameters
Reservoir effective permeability, porosity, oil saturation, effective thickness, reservoir formation pressure, static temperature. Phase permeability relationship and fluid properties of oil and water in reservoir. Mechanical properties of rock. The vertical distribution and horizontal principal stress orientation of the reservoir are discussed. The lithology, thickness and stress value of the barrier layer, well oil test, development and production test, etc.
3. Fracturing parameters
Fracture fracture pressure, extension pressure and closure pressure, fracturing fluid type, rheology, viscosity temperature and viscosity, filtration and damage data, proppant type and compressive strength, conductivity and fracture proppant layer permeability, pumping rate, average sand-to-liquid ratio, pumping procedure, fracturing equipment power and pressure limit, reservoir past fracturing practice and pre - and post-fracturing production response information Material data.