Wellhead protection device for sucker rod
A protective device and sucker rod technology, which is applied in the direction of flushing wellbore, wellbore/well components, sealing/package, etc., can solve problems such as flash blowout, hidden dangers to staff safety, pollution, etc., to prevent blowout and pollution and safety hazards
Active Publication Date: 2022-06-03
PETROCHINA CO LTD
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AI Technical Summary
Problems solved by technology
[0003] When the sucker rod is lifted and lowered, there will be the following problems: whether it is the oil stain attached to the sucker rod body or the liquid in the pump squeezed out when the sucker rod is lowered, both will be taken out and fall freely to form pollution ; When the sucker rod is lifted without snubbing, flash blowout may occur suddenly, which will cause great safety hazards to the staff
Method used
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[0040] In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0041] The embodiment of the present invention provides a sucker rod wellhead protection device, such as the attached figure 1 As shown, the device includes: a short joint 1, the lower end of which is connected with the tubing hanger in the target sucker rod wellhead;
[0042] Gate valve 2, the lower end is sealed with the upper end of the short joint 1;
[0043] The pollution control sleeve 3, the lower end is sealed with the upper end of the gate valve 2;
[0044] One end of the sewage pipe fitting 4 is connected to the side wall of the sewage control sleeve 3 and is in conduction;
[0045] The liquid storage tank 6 of the filter 5 is built in, and the other end of the sewage pipe 4 extends into the filter 5 .
[0046] The sucker rod wellhead protec...
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The invention discloses a sucker rod wellhead protection device, which belongs to the field of petrochemical industry. The device includes: a short joint, the lower end of which is connected to the tubing hanger in the wellhead of the target sucker rod; a gate valve, whose lower end is sealed and connected with the upper end of the short joint; a pollution control sleeve, whose lower end is sealed and connected with the upper end of the gate valve; blowdown A pipe fitting, one end of which is connected to and connected to the side wall of the pollution control sleeve; a liquid storage tank with a filter built in, and the other end of the sewage discharge pipe fitting extends into the filter. The pollution control sleeve, the sewage pipe fittings and the liquid storage tank cooperate to form a closed liquid discharge channel to collect the pollution source in a directional manner, and prevent pollution and safety hazards caused by being taken out by the sucker rod. When the sucker rod is unsnubbed, even if there is a sudden flash blowout, it will not cause harm to the staff.
Description
technical field [0001] The invention relates to the petrochemical field, in particular to a sucker rod wellhead protection device. Background technique [0002] In the petrochemical industry, the use of oil well pump is a common method of mechanical oil extraction. In order to produce safely, a workover pump is usually required, and during the process of workover and pump inspection, the sucker rod must be tripped. [0003] When the sucker rod is lifted and lowered, there will be the following problems: whether it is the oil stains attached to the sucker rod body, or the liquid in the pump squeezed out when the sucker rod is lowered, both will be taken out and fall freely, causing pollution ; When the sucker rod is pulled up without snubbing, flash blowout may occur suddenly, causing a greater safety hazard to the staff. [0004] It can be seen that how to solve the above problems is of great significance for improving environmental safety and personnel safety. SUMMARY O...
Claims
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IPC IPC(8): E21B33/04E21B21/00
CPCE21B33/04E21B21/00
Inventor 孙连会刘德强付俊红孙骥苏国庆宋志刚姜新红张远弟霍洪涛匡凯张文超罗春红王延军
Owner PETROCHINA CO LTD