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Oil pipe centralizing connecting bolt

A technology for connecting bolts and oil pipes, which is applied in the direction of drilling pipes, casings, drilling equipment, etc., can solve the problems of broken seal rings, hanger seal rings, time-consuming and labor-intensive problems, and achieve the goal of ensuring successful construction and avoiding rework Effect

Inactive Publication Date: 2019-06-21
西安瑞杰实业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hanger must pass through the blowout preventer during the lowering process. Due to the inclination of the derrick, the hanger cannot be lowered straightly, and the ram in the blowout preventer often hangs and damages the sealing ring on the hanger.
In order to solve the problem that the sealing ring of the hanger is broken during the lowering process, the oil pipe connected to the hanger is pushed by manpower from one side of the deflection to the other on site. The device is in the center, and the operator must look down close to the wellhead to observe, so as not to avoid sudden accidents, there are potential safety hazards

Method used

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  • Oil pipe centralizing connecting bolt
  • Oil pipe centralizing connecting bolt

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Embodiment Construction

[0011] see figure 1 , including lifting oil pipe 1, roller 2, wheel frame 3, bracket 4, seal ring 5, hanger 6, blowout preventer 7, connecting bolt 8, base 9, support rod 10, adjusting screw 11, support seat 13, seal ring 5 is installed on the hanger 6, the lower part of the lifting oil pipe 1 is connected with the hanger 6, the oil pipe in the well is connected under the hanger 6 and passes through the blowout preventer 7, the base 9 is fixed on the blowout preventer 7 by the connecting bolt 8, the base 9 There is a track groove 11, and there is a screw hole on the right side of the base 9. The internal thread of the screw hole is matched with the external thread of the adjusting screw 12, and the adjusting screw 12 passes through the screw hole on the right side of the base 9 and enters the track groove 11. , the support base 13 is sleeved on the left end of the adjusting screw rod 12, the support base 13 is in the track groove 11, the support base 13 can only walk and canno...

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Abstract

The invention discloses an oil pipe centralizing connecting bolt which comprises a lifting oil pipe, a sealing ring, a hanger, a blowout preventer and a connecting bolt. The sealing ring is installedon the hanger, the lower portion of the lifting oil pipe is connected with the hanger, and the lower portion of the hanger is connected with an in-well oil pipe. The oil pipe centralizing connecting bolt also comprises idler wheels, a wheel frame, a bracket, a base, a supporting rod, an adjusting screw and a supporting seat. According to the invention, by rotating the adjusting screw, the liftingoil pipe can be pushed to be positioned in the middle of the interior of the blowout preventer, when the hanger descends and passes through the blowout preventer, the hanger cannot make contact with agate plate in the blowout preventer, the sealing ring on the hanger cannot be damaged by hanging, construction success is guaranteed, operation rework is avoided, the hanger can be centralized by rotating the adjusting screw, operation is easy, convenient and fast, time and labor are saved, an operator does not need to get close to a wellhead, and accidents cannot happen.

Description

technical field [0001] The invention relates to the technical field of oil drilling and production equipment, in particular to an oil pipe straightening connecting bolt. Background technique [0002] When operating oil and water wells in the oil field, a hanger must be lowered to hang the tubing in the well on the large cross of the wellhead device. The hanger also plays the role of sealing the oil casing so that the high-pressure liquid above the hanger cannot leak into the casing, so , there is a sealing ring on the hanger. The hanger has to pass through the blowout preventer during the lowering process. Due to the inclination of the derrick, the hanger cannot be lowered straightly, and the ram in the blowout preventer often hangs and damages the sealing ring on the hanger. In order to solve the problem that the sealing ring of the hanger is broken during the lowering process, the oil pipe connected to the hanger is pushed by manpower from one side of the deflection to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/10
Inventor 曹雅丽
Owner 西安瑞杰实业股份有限公司
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