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Wellbore plugging device and its installation method

A technology of wellbore and barrel, applied in the field of wellbore plugging device and its installation, can solve problems such as safety risks and complicated operations, and achieve the effects of low operating costs, short well-occupancy time, and improved safety and construction efficiency

Active Publication Date: 2019-06-07
新疆能新科油气技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a wellbore plugging device and its installation method to solve the problems in the prior art that there are safety risks and complex operations when killing wells or using blowout prevention equipment before the tubing or oil well pump is lowered. technical issues

Method used

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  • Wellbore plugging device and its installation method
  • Wellbore plugging device and its installation method
  • Wellbore plugging device and its installation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see figure 1 and figure 2 As shown, Embodiment 1 of the present invention provides a wellbore plugging device, which includes a plugging cylinder 101, and the plugging cylinder 101 has a hollow cavity 102; the plugging cylinder 101 also has a corresponding head end and tail end , specifically, the head end and the tail end of the plugging cylinder 101 are located in the axial direction of the hollow cylinder cavity 102; Plug 104, and the sealing plug 104 is located in the hollow cylinder cavity 102, and the sealing plug 104 is made of degradable material; the outer surface of the plugging cylinder 101 is provided with a plugging mechanism, which is used to fix the plugging cylinder 101 in the oil well , that is, the plugging cylinder 101 is set and sealed in the casing 105 of the oil well.

[0036] When in use, it is convenient to set the plugging cylinder 101 in the casing 105 of the oil well through the provided drop-off joint 103. After the plugging cylinder 101 i...

Embodiment 2

[0048] see image 3 As shown, the wellbore plugging device in the second embodiment is an improvement on the basis of the first embodiment. The technical content disclosed in the first embodiment will not be described repeatedly, and the content disclosed in the first embodiment also belongs to the content disclosed in this embodiment.

[0049] Embodiment 2 of the present invention provides a wellbore plugging device. The tail end of the plugging cylinder 101 has a stopper 118 for stopping the rotation of the plugging cylinder 101. That is to say, when the wellbore plugging device After being set in the casing 105 of the oil well, the stopper 118 provided at the tail end of the wellbore plugging device can prevent the plugging cylinder 101 from rotating; The second shear pin 117 is cut off, so that when the sealing plug 104 is separated from the plugging cylinder 101, it can also prevent the downward movement of the plugging cylinder.

Embodiment 3

[0051] see Figure 4 to Figure 7 As shown, Embodiment 3 of the present invention provides a method for installing a wellbore plugging device 100, wherein the wellbore plugging device 100 is the wellbore plugging device 100 in Embodiment 1 or Embodiment 2, and includes the following steps:

[0052] Step S100, installing the wellbore plugging device 100 on the setting tool. Specifically, the setting tool is a cable setting tool 119 , the wellbore plugging device 100 is connected to the cable setting tool 119 , and the two are put into the blowout preventer 121 .

[0053] Step S200, put the installed wellbore plugging device 100 and the setting tool into the casing 105 in the oil well, and lower the wellbore plugging device 100 and the setting tool to a predetermined position in the oil well. Specifically, use the crane 124 to lift the blowout preventer 121, and connect the blowout preventer 121 to the wellhead of the oil well; open the wellhead control valve, and use the cable ...

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Abstract

The invention relates to the technical field of oil well control equipment, in particular to a shaft cast-plugging device and a mounting method thereof. The shaft cast-plugging device comprises a cast-plugging barrel which is provided with a hollow barrel cavity, a head end and a tail end corresponding to the head end. A releasing sub is mounted at the head end, and a sealing plug is mounted at the tail end, located in the hollow barrel cavity and made of degradable materials. A blocking mechanism is arranged on the outer surface of the cast-plugging barrel. A blocking part is arranged at the tail end of the shaft cast-plugging device. The mounting method of the shaft cast-plugging device includes the following steps that the shaft cast-plugging device and a setting tool mounted together with the shaft cast-plugging device are placed in a sleeve in an oil well, the shaft cast-plugging device and the setting tool are downwards placed in a predetermined position in the oil well, and the setting tool and the shaft cast-plugging device are separated. According to the shaft cast-plugging device and the mounting method thereof, operation safety and construction efficiency are improved greatly, and the shaft cast-plugging device has the characteristics that operation is easy, the operation cost is low, and the well occupying time is short.

Description

technical field [0001] The invention relates to the technical field of oil well control equipment, in particular to a wellbore plugging device and an installation method thereof. Background technique [0002] In some existing wells, after the fracturing operation is completed, oil pipes or oil well pumps need to be run in to meet the optimal production scheduling requirements. However, high pressure energy is stored in the formation after fracturing. Well killing operation or blowout prevention operation equipment must be used before. [0003] However, the well killing operation not only has the risk of polluting the formation, but also often requires repeated well killing due to unsuccessful well killing, which makes the operation complicated; and when blowout prevention equipment is used, the operation is complicated, the operation cost is relatively high, and the well takes up a long time , there are still a lot of security risks. Contents of the invention [0004] Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/12
CPCE21B33/12E21B33/1208
Inventor 章敬张亚杰李颖李见王腾飞万楷
Owner 新疆能新科油气技术有限公司