Downhole string pressure plug
A downhole pipe string and plugging technology, which is applied in wellbore/well components, wellbore/well valve devices, buildings, etc., can solve the problems that the ball cannot withstand the reverse pressure of formation fluid and the safety hazards of the upper part of the operation, etc. Achieve the effect of reducing construction cost, improving construction efficiency and ensuring safety
Active Publication Date: 2020-07-10
CHINA PETROLEUM & CHEM CORP +1
View PDF15 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The technical problem to be solved by the present invention is to overcome the problem that the ball put into the plug in the prior art cannot withstand the reverse pressure exerted by the formation fluid, which brings safety hazards to the upper operation.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] The present invention will be further described below in conjunction with accompanying drawing.
[0021] Such as figure 1 , figure 2 As shown, the downhole string pressure-bearing plug 10 of the embodiment of the present invention includes a body 11 connected to the oil pipe, a mandrel 12 arranged in the body 11 and sealingly fitted with the inner wall of the body 11, and a series of mandrel 12 arranged in series. Seal valve.
[0022] The body 11 includes a first end portion 111 connected to the oil pipe, a second end portion 112 opposite to the first end portion 111 , and a fluid channel 113 disposed between the first end portion 111 and the second end portion 112 . The mandrel 12 is arranged in the fluid channel 113 and fixedly connected with the body 11 through the shear pin 99 . Mandrel 12 includes a central bore. The central hole includes a tapered receiving hole section facing the first end 111 of the body 11 and a tapered hole section facing the second end 1...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a downhole string pressure-bearing packer. The downhole string pressure-bearing packer comprises a body, a mandrel and a sealing valve, wherein the body is provided with a first end portion, a second end portion and a fluid channel formed between the first end portion and the second end portion; the mandrel is arranged inside the fluid channel; and the sealing valve is arranged inside the fluid channel in the mode of being connected with the mandrel in series and can pack the fluid channel. The downhole string pressure-bearing packer comprises the body connected with an oil tube, the mandrel arranged inside the body and the sealing valve with the sealing function. When the downhole string pressure-bearing packer is put into a well and a ball is thrown into the packer, the packer not only can finish setting work of the packer, but also has the reverse pressure bearing function as the sealing valve capable of packing the fluid channel is provided, prevents formation fluid from entering the packer, ensures safety of the construction process, improves the construction efficiency and lowers the construction cost.
Description
technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a downhole pipe string pressure-bearing plug. Background technique [0002] At present, in many oil fields, the ball is usually thrown into the plug during the well completion operation, so that the packer is set hydraulically, which can ensure a high success rate of setting of the packer. But there are some deficiencies in the existing technology, such as the balls thrown into the plug cannot withstand the reverse pressure exerted by the formation fluid, especially in high-pressure oil and gas wells, which will affect the upper operations (such as opening the sliding sleeve, replacing the annulus) There are potential safety hazards when operating. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the problem that the ball put into the plug in the prior art cannot withstand the reverse pressure e...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21B34/06
CPCE21B34/063E21B2200/04
Inventor 何汉平张华卫张洪宝郑德帅田璐
Owner CHINA PETROLEUM & CHEM CORP