Well head mobile anti-theft device

Abstract

The invention relates to a well head mobile anti-theft device mainly comprising parts, i.e. a conical seat type oil pipe hanger, a bottom ring flange, a well head large cross joint, an upper ring flange, a small tee joint, anti-theft strobes (i.e. a casing strobe and a production control strobe), a needle-shaped control valve, and the like, wherein the parts, i.e. the conical seat type oil pipe hanger, the bottom ring flange, the well head large cross joint, the upper ring flange, the small tee joint, and the like, are completely matched with parts a 250-type christmas tree generally used foran oil field. The anti-theft technique is used for the production management control function of a well head, thus the product has incomparable advantages compared with other similar products; the casing strobe and the production control strobe are manufactured by adopting the anti-theft technique; four sluice valves used in the oil production well head are all anti-theft sluice valves manufactured by the company and adopt two-stage anti-theft measures and omit hand wheels on appearance compared with the traditional 250-type strobe, the internal structures of the sluice valves can not be seenfrom external, and the anti-theft strobes can be opened only after an anti-theft cover is opened by a special spanner.

Description

technical field [0001] The invention discloses a new type of wellhead oil production device, especially a high-level anti-theft function, which can fully meet the needs of oil well control during oil well production and downhole operations. It is not only suitable for thin oil wells, but also suitable for oil with high viscosity. , Heavy oil wells with poor fluidity. Background technique [0002] Crude oil and associated gas are produced from the surface of the oil production well to the surface, through the control part of the oil production wellhead (including blowout prevention box, high pressure valve, tubing valve, casing valve, large cross and wellhead pipeline), through the single well The oil pipelines are collected to the oil gathering station for processing and then exported. However, at present, the general wellhead oil production equipment in the oil field uses traditional handwheels to open and close the valves. The bolts used to fasten the clamps are ordinary b...

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Problems solved by technology

[0002] Crude oil and associated gas are produced from the surface of the oil production well to the surface, through the control part of the oil production wellhead (including blowout prevention box, high pressure valve, tubing valve, casing valve, large cross and wellhead pipeline), through the single well The oil pipelines are collected to the oil gathering station for processing and then exported. However, at present, the general wellhead oil production equipment in the oil field uses traditional handwheels to open and close the valves. The bolts used to fasten the clamps are ordinary bolts. steal

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