Compound pressure stabilization rubber plug
A glue-pressing and duplex technology, which is applied in wellbore/well components, earth-moving drilling, sealing/packing, etc., can solve the problems of not being able to complete the plugging workload according to the design, the effect of plugging and poor quality, etc. Simple structure and strong practicability
Inactive Publication Date: 2014-01-22
SHAANXI HI TECH ENERGY DEV
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Problems solved by technology
When plugging in deep wells and low-permeability formations, it often happens that the plugging workload cannot be completed according to the design, and the plugging effect and quality are not good
Method used
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Embodiment Construction
[0008] The compound constant pressure rubber plug of the present invention includes a body 1, and one end of the body 1 is provided with a circular valve head 2, the valve head 2 is connected with the working tube of the constant pressure switch in the constant pressure operation, and the body 1 is provided with several metal valve heads. The spacer ring 3 is provided with a rubber cup 4 between every two adjacent metal spacer rings 3 .
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Abstract
The invention relates to a matching device of an oil well squeezing and plugging device, in particular to a compound pressure stabilization rubber plug. The compound pressure stabilization rubber plug comprises a body, a round valve head is arranged at one end of the body, a plurality of metal separation rings are arranged on the body, and a rubber packing cup is arranged between every two adjacent metal separation rings. The compound pressure stabilization rubber plug is simple in structure and strong in practicality.
Description
technical field [0001] The invention relates to a matching device of an oil well plugging device. Background technique [0002] In recent years, due to casing damage and interlayer adjustment contradictions in oilfields, the workload of plugging operations has increased. When plugging in deep wells and low-permeability formations, it often happens that the plugging workload cannot be completed according to the design, and the plugging effect and quality are not good. Contents of the invention [0003] The invention provides a compound constant pressure rubber plug for oil well plugging pipe string operation. [0004] The compound constant pressure rubber plug of the present invention includes a body, one end of the body is provided with a circular valve head, the body is provided with a number of metal spacers, and rubber cups are provided between every two adjacent metal spacers. [0005] The invention has simple structure and strong practicability. Description of dra...
Claims
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IPC IPC(8): E21B33/126
Inventor 张淑芬
Owner SHAANXI HI TECH ENERGY DEV
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