Full hydraulic intelligent wellhead integrated device

Abstract

The invention relates to the field of mine machinery, and is named as a full hydraulic intelligent wellhead integrated device. The device comprises an automatic centering hydraulic sealing module, anintelligent sampling module and a multifunctional ball valve. The automatic centering and universally aligning hydraulic sealing module is connected to a wellhead oil pipe and sleeves an oil well polished rod. The intelligent sampling module is installed on the left side of the automatic centering hydraulic sealing module, and the multifunctional ball valve is installed on the right side of the automatic centering hydraulic sealing module. According to the device, the automatic centering hydraulic sealing module, the intelligent sampling module and the multifunctional ball valve can be combined and applied, or can be used separately combined with the requirement to achieve functions, and the device has the advantages of low cost, long use circle, convenient installation, easy control, convenient maintenance, environment protection and the like.

Description

Technical field: [0001] The invention relates to the field of mine machinery, and is named a fully hydraulic intelligent wellhead integrated device. Background technique: [0002] The main equipment used in mechanical oil recovery is rod pumping equipment, and the rod-lifting oil wells accounted for more than 95% of the total number of mechanical oil recovery wells. The wellhead is the channel connecting the underground oil pipeline and the surface gathering and transportation system. It is also a key process control device in the process of crude oil flowing from underground to the surface. It must meet the five functions of sampling, polished rod sealing, wellhead pressure display, ball throwing, and process connection. Existing mechanical oil recovery wellheads are formed by welding or threaded connections and flange connections by various gate valves, polished rod sealers, pressure gauges, plugs, and pipeline nipples. [0003] At present, the mechanical oil recovery wel...

AI Technical Summary

Problems solved by technology

[0003] At present, the mechanical oil recovery wellheads used in the production site mainly have the following shortcomings: (1) Various gate valves have no intelligent control function, and cannot realize controllable unattended, especially the sampling port, pressure gauge interface, plug and other parts are maliciously opened, to disassemble

(3) The automatic centering function of the wellhead is poor, and the packing box and the polished rod cannot be effectively centered; when the polished rod is not perpendicular to the wellhead, the angle cannot be corrected; resulting in large wear and short life of the seals in the packing box, resulting in oil leakage and pollution environment

(4) When the polished rod accidentally breaks off the well, the wellhead cannot be self-sealed, resulting in large-scale pollution of the well site and equipment

(6) The existing wellhead has a single function, cannot realize pitching, and is difficult to connect with purging, hot washing, etc.

These defects have brought serious constraints to the controllable unattended operation under digital conditions, and have also caused many major safety and environmental protection hazards

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