8results about How to "Low operating cost" patented technology

The present disclosure relates to a method and system for producing olefins by cracking heavy hydrocarbons, which comprises the following steps: S1, entering a gas-liquid separator for gas-liquid separation to obtain a first gas phase material and a first liquid phase material; and in the process of separation, introducing a separation aid into the gas-liquid separator to contact with the first gas phase material in countercurrent, so that the heavy components carried in the gas phase material are washed or condensed to obtain a second gas phase material; S2, making the second gas phase material enter the radiant section of a steam cracking furnace for cracking to obtain a cracking product containing olefins. The above technical solution can realize the production of olefins to a greater extent by a shorter process and smaller energy consumption.

This invention belongs to the field of organic chemical technology and relates to an apparatus and method for preparing N,N-dibutylformamide. The apparatus includes a first distillation column, a second distillation column, a third distillation column, and connecting pipelines. Using the apparatus and method of this invention, high-purity N,N-dibutylformamide can be prepared safely and stably with high reaction efficiency and production capacity, short preparation time, low methyl formate loss, minimal equipment wear, low energy consumption, and high safety and stability.

The application discloses a layered sand prevention and polymer injection integrated pipe column and a construction method, relates to the technical field of oil exploitation, and the pipe column comprises a downhole pipe column and a control pipe column. The downhole pipe column comprises a layered sand prevention and polymer injection unit. The layered sand prevention and polymer injection unit comprises a positioning cylinder, an adjustable sand prevention and injection device, a blockage removal injection device and layered packers. The control pipe column comprises a positioning tool and a repeatedly switchable tool. The positioning tool can be positioned with the positioning cylinder, and the repeatedly switchable tool can control and regulate the adjustable sand prevention and injection device and the blockage removal injection device. The application realizes sand prevention and polymer injection integration through the adjustable sand prevention and injection device. The application realizes downhole efficient regulation through the positioning tool and the repeatedly switchable tool.

The application provides a new energy automobile engine cover jacking device performance simulation test device, belongs to the automobile parts performance test technical field, contains the base, the base is reserved the cavity containing assembly, the central fixed connection workbench is connected to the lower end of the cavity, the upper end of the workbench is fixedly connected with the limiting plate, two pairs of guide columns are fixedly connected to both sides of the cavity, the sliding sleeve is movably arranged on the guide column, a counterweight is fixedly connected to the two pairs of sliding sleeves, the lower end of the counterweight is fixedly connected with the detection assembly, the control unit is arranged on the right side of the upper end of the base, one side of the workbench is fixedly connected with the support table, the fastening module is arranged on the support table, and the fastening module is used for quickly and stably locking the jacking device. The application solves the problem that the existing new energy automobile engine cover jacking device performance simulation test device can only fasten the jacking device at one place when fastening the jacking device, cannot guarantee the stability of the jacking device fastening, and cannot guarantee the normal test of the jacking device.

The application discloses an infinite-level water plugging and opening switch sliding sleeve, which comprises a sliding sleeve and a switch tool, the sliding sleeve comprises an upper joint, a positioning claw, an upper connecting piece, a working barrel, an outer pipe, a lower connecting piece, a blocking ring, a lower joint, an upper sealing assembly and a lower sealing piece; and the switch tool comprises an upper connecting head, an upper cone, a central pipe, an upper slip, an upper sheath, a pin, a centralizing sleeve, a lower slip, a lower sheath, a lower cone, a load positioning sleeve, a guide head and a spring centralizing piece; the opening and closing of a target layer are realized through the cooperation of the sliding sleeve and the switch tool, multi-layer arbitrary number of layers and arbitrary layer combination exploitation are realized, the reliability of the technology is further improved, the service life of key tools and pipe columns is prolonged, the operation amount is reduced, the operation cost is reduced, the production capacity of each layer can be accurately understood, and the oilfield production time efficiency is improved.

The application discloses a kind of annular fracturing gas lift liquid discharge pipe columns and operating methods, including multiple groups of gas lift tools and throttling tools, when annular injection gas, gas enters cavity from the gap between the body of gas lift tool and gland, when injection pressure is greater than the pressure in gas cavity, lower valve body is pushed up, and the disengagement between upper ball valve and bidirectional valve seat, injection gas enters the tubing through bidirectional valve seat, and the liquid in the tubing is discharged by the gas lift tool;When injection pressure is lower than the pressure in gas cavity, upper ball valve is seated in bidirectional valve seat, and oil, casing passage is blocked, injection gas pushes annular fluid surface down, and the process of lower gas lift tool is repeated to open the liquid discharge operation, until the liquid in the tubing is discharged completely by the lowermost gas lift tool.The pipe column can realize rapid liquid discharge after fracturing, without well killing, down liquid discharge pipe column completion, avoid the damage to reservoir by well killing, ensure the modification effect, effectively improve the construction efficiency, reduce the operation cost.

This disclosure relates to a non-metallic elastic sealing ring, a soft-seal oil pump, and a sealing method. The non-metallic elastic sealing ring includes a non-closed ring body; the upper surface of the non-closed ring body is provided with a wedge-shaped groove structure; the non-metallic elastic sealing ring is disposed on the plunger of the soft-seal oil pump. During the upstroke, the pressure of the liquid on the upper part of the non-metallic elastic sealing ring acts on the wedge-shaped groove, decomposes into a circumferential force, causing the sealing ring to expand and deform, completely fitting with the pump barrel, strengthening the seal between the plunger and the pump barrel, maintaining pump efficiency, and simultaneously playing a role in scraping sand and scale, preventing pump jamming; during the downstroke, after the pressure on the upper and lower surfaces of the plunger is balanced, the sealing ring contracts back to its initial state, the gap between the plunger and the pump barrel increases, reducing the downward resistance caused by the high viscosity of the liquid during the downstroke, slowing down the bending of the sucker rod, extending the service life of the rod tube, extending the pump inspection cycle, and reducing production costs.