Ultrahigh-pressure double-channel large-drift-diameter and high-low-pressure fracturing manifold

Abstract

The invention discloses an ultrahigh-pressure double-channel large-drift-diameter and high-low-pressure fracturing manifold. The fracturing manifold comprises a high-pressure pipeline, a low-pressure pipeline, a control valve set and a flange five-way joint, wherein the low-pressure pipeline is arranged below the high-pressure pipeline; the high-pressure pipeline is sequentially connected with the control valve set and the flange five-way joint; the high-pressure pipeline is provided with a plurality of flange four-way joints connected through flange straight pipes; a high-pressure suction inlet is formed in one longitudinal end of each flange four-way joint, and a blind flange is arranged at the other end of each flange four-way joint; first low-pressure suction inlets are formed in the two ends of the low-pressure pipeline; low-pressure exhaust ports corresponding to the high-pressure suction inlets are formed in the main pipe; butterfly valves and union joints are arranged on the first low-pressure suction inlets and the low-pressure exhaust ports; and the high-pressure pipeline and the low-pressure pipeline are both installed on detachable skid-mounted units. The ultrahigh-pressure double-channel large-drift-diameter and high-low-pressure fracturing manifold is formed by assembling the multiple sections of skid-mounted units, so that the disassembly and assembly are convenient; and a double-channel large-drift-diameter and linear fluid conveying mode is adopted, so that the erosion resistance is improved.

Description

technical field [0001] The invention belongs to the technical field of oil field fracturing equipment, in particular to an ultra-high pressure dual-channel large diameter high and low pressure fracturing manifold. Background technique [0002] The fracturing manifold is an essential equipment in oilfield fracturing operations. With the increasing depth of fracturing operations, high-pressure fluid mixed with quartz sand will wash the inner wall of the pipeline at high speed and high pressure, and the manifold will bear more and more pressure. The fracturing pressure is as high as 140MPa, and bursting is most likely to occur at the part where the fluid velocity and flow direction are changed, which seriously affects the personal safety of operators and the safety of equipment. At present, some common high and low pressure fracturing manifold equipment do not work well in high pressure environment, it is difficult to get rid of the disadvantages of early erosion of the manifol...

AI Technical Summary

Problems solved by technology

[0002] The fracturing manifold is an essential equipment in oilfield fracturing operations. With the increasing depth of fracturing operations, high-pressure fluid mixed with quartz sand will wash the inner wall of the pipeline at high speed and high pressure, and the manifold will bear more and more pressure. The fracturing pressure is as high as 140MPa, and bursting is most likely to occur at the part where the fluid velocity and flow direction are changed, which seriously affects the personal safety of operators and the safety of equipment

At present, some common high and low pressure fracturing manifold equipment do not work well in high pressure environment, it is difficult to get rid of the disadvantages of early erosion of the manifold, and even cause adverse consequences, and some fracturing equipment is more complicated in the disassembly and installation process Inconvenient, more oil tanks are added, the diameter is smaller, and the fluid flow performance is poor, which is not conducive to the transportation of large-flux fracturing fluid

[0003] Patent CN204327058U discloses a high-pressure-resistant, multi-pipeline, combined fracturing manifold. The manifold structure is composed of multiple intersecting branch pipes and elevated fracturing shorts. The high-pressure fracturing fluid flows in the branch pipes. , erosion will occur, the flow in the high-pressure fluid trident pipe is not smooth, and the fracturing fluid cannot be transported stably for a long time

[0004] Patent CN206942745U discloses a high and low pressure fracturing manifold skid, which is achieved by placing the low pressure manifold under the high pressure manifold, adding multiple interfaces between the high pressure manifold and the low pressure manifold, and designing the flanks of the high pressure manifold to a certain oblique angle. Save space and fast installation, but more unions are added and the diameter is smaller, which is not conducive to the transportation of large-flux fracturing fluid

Images