An oil well head anti-theft well cover device

Abstract

The invention discloses an anti-theft well cover device for an oil well opening. The anti-theft well cover device comprises an outer sleeve, an inner sleeve and an inner plug. A first groove is formed in the top of the outer sleeve in a concave mode, and a first through hole is formed in the bottom of the first groove in a vertically-through mode; the inner sleeve is installed in the first groove, a second groove is formed in the top of the inner sleeve in a concave mode, a second through hole is formed in the bottom of the second groove in a vertically-through mode, the first through hole is communicated with the second through hole up and down, and at least one opening groove is formed in the bottom of the second groove; the inner plug is installed in the second groove, the contact faces of the inner sleeve and the inner wall of the first groove are connected through the thread surface, at least one inside-outside-communicated transverse fixing hole is formed in the side wall of the outer sleeve, fixing screws are fixed in all the transverse fixing holes respectively, and the thread surface is formed in the outer side wall of the outer sleeve. The anti-theft well cover device is quite difficult to open when an indirect special operator uses a special tool, and the anti-theft reliability is high.

Description

technical field [0001] The present application relates to the field of petroleum exploitation equipment, in particular to an anti-theft cover device for oil wellheads. Background technique [0002] With the continuous expansion of the scale of oilfield exploration and development in my country, oil theft incidents occur frequently, so oilfield anti-theft measures have become an important part of oil production safety. [0003] In the prior art, digital video monitoring equipment, manual inspections, or anti-theft sampling valves are used on oil pipelines to prevent oil theft accidents. But the above method has the following problems: [0004] Due to the harsh environment in some mining sites, the video monitoring equipment is easily damaged, and the on-site situation requires special personnel to monitor for a long time, which is labor-intensive; manual inspections are labor-intensive, and have little effect on large-scale mining sites; anti-theft samplers Because it is se...

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Problems solved by technology

[0004] Due to the harsh environment of some mining sites, the video monitoring equipment is easily damaged, and the site needs to be monitored by a special person for a long time, which is labor-intensive; manual inspection is labor-intensive, and has little effect on large-scale mining sites; anti-theft sampler Since it is installed outside the oil pipe, it is extremely vulnerable to deliberate damage by criminals, and it is also difficult to play the role of anti-theft

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