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Pressure equalization type static sealed pressurized well-repairing working device

An operating device and static sealing technology, which is applied in sealing/package, drilling equipment, wellbore/well components, etc., can solve problems such as high cost of use, high energy consumption, and large environmental pollution, and achieve fast pressure relief, The effect of low energy consumption and smooth process

Inactive Publication Date: 2009-07-01
杨颖辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the sealing method between the wellhead device and the pipe string, it can be divided into two types: dynamic seal and static seal. The former has the disadvantages of easy wear of the seal, high cost of use, high failure rate and large environmental pollution. The latter effectively solves the problem. The above-mentioned defects of the former
However, in the operation process of the existing static sealing pressure workover operation device, in addition to overcoming the gravity of the pipe string itself, it also needs to overcome the pressure effect of the well fluid in the formation, which has the disadvantage of high energy consumption

Method used

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  • Pressure equalization type static sealed pressurized well-repairing working device
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  • Pressure equalization type static sealed pressurized well-repairing working device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: as figure 1 As shown, it is to set the pressure balance on the static sealing pressure workover operation device including the telescopic sleeve 1, the lifting hydraulic cylinder 2, the upper beam 3, the lower beam 4, the upper blowout preventer 5, and the lower blowout preventer 6. Hydraulic cylinder 7. The pressure balance hydraulic cylinder 7 is composed of an upper cylinder 8, a lower cylinder 9, a piston rod 10, an upper piston 11 and a lower piston 12. The lower end of the upper cylinder 8 is connected to the upper end of the lower cylinder 9, and the piston rod 10 is located on the upper In the hydraulic cylinder 8 and the lower hydraulic cylinder 9, the upper piston 11 and the lower piston 12 are respectively fixed on the upper end and the lower end of the piston rod 10, and the lower end of the upper hydraulic cylinder 8 is also provided with a hydraulic oil inlet and outlet 13, and the upper and lower sides of the pressure balance hydraulic cylin...

Embodiment 2

[0010] Embodiment 2: as figure 2 As shown, it is to set the pressure balance on the static sealing pressure workover operation device including the telescopic sleeve 1, the lifting hydraulic cylinder 2, the upper beam 3, the lower beam 4, the upper blowout preventer 5, and the lower blowout preventer 6. Hydraulic cylinder 7. The pressure balance hydraulic cylinder 7 is composed of a cylinder barrel 14, a piston rod 15 and a piston 16. The piston rod 15 and the cylinder barrel 14 of the pressure balance hydraulic cylinder 7 are respectively fixed on the upper beam 3 and the lower beam 4. The cylinder of the pressure balance hydraulic cylinder 7 One end of the tube 14 communicates with the lumen at the lower end of the telescopic sleeve 1 through a pipeline.

Embodiment 3

[0011] Embodiment 3: as image 3 As shown, it is to set the pressure balance on the static sealing pressure workover operation device including the telescopic sleeve 1, the lifting hydraulic cylinder 2, the upper beam 3, the lower beam 4, the upper blowout preventer 5, and the lower blowout preventer 6. Hydraulic cylinder 7. The pressure balance hydraulic cylinder 7 is composed of a cylinder barrel 14, a piston rod 15 and a piston 16. The lower beam 4 is also connected with a fixed frame 17. The piston rod 15 and the cylinder barrel 14 of the pressure balance hydraulic cylinder 7 are respectively fixed on the upper beam 3 and the On the fixed frame 17 connected to the lower beam 4, one end of the cylinder barrel 14 of the pressure balance hydraulic cylinder 7 communicates with the lower end lumen of the telescopic sleeve 1 through a pipeline.

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Abstract

The pressure balanced static sealing hot workover operation device includes telescopic casing (1), lifting hydraulic cylinder (2), upper beam (3), lower beam (4), upper blowout preventer (5) 1. A pressure balance hydraulic cylinder (7) is arranged on the static seal pressure workover device of the lower blowout preventer (6), and one end of the cylinder barrel of the pressure balance hydraulic cylinder (7) passes through the pipeline and the lower end of the telescopic sleeve (1). The lumens are connected. In addition to the advantages of low energy consumption, it also has the advantages of fast and stable process of adding and releasing pressure, and the liquid in the well is not discharged outside at all.

Description

technical field [0001] The invention relates to an oil field workover operation device, in particular to a static sealing pressure workover operation device. Background technique [0002] In oil field workover operations, the workover device under pressure is a device that can lift and lower pipe strings and downhole tools at the wellhead under pressure conditions in oil wells and water wells. According to the sealing method between the wellhead device and the pipe string, it can be divided into two types: dynamic seal and static seal. The former has the disadvantages of easy wear of the seal, high cost of use, high failure rate and large environmental pollution. The latter effectively solves the problem. The above-mentioned defects of the former. However, in the operation process of the existing static sealing pressure workover operation device, in addition to overcoming the gravity of the pipe string itself, it also needs to overcome the pressure effect of the well fluid ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/03E21B19/00
Inventor 杨颖辉柳秀涛张艳红
Owner 杨颖辉