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Blowout control tubing head and oil and gas wellhead device

A wellhead device and tubing head technology, which is applied in wellbore/well parts, earthwork drilling, sealing/packing, etc., and can solve the problems that the tubing head cannot prevent blowout, etc.

Inactive Publication Date: 2017-01-04
JIANGSU GUIXIN PETROLEUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The blowout-proof tubing head is equipped with a manual blowout prevention mechanism, so that the blowout-proof tubing head can not only hang the tubing string and seal the annular space between the tubing and the oil layer casing, but also prevent blowout; thus, the blowout-proof tubing head Overcome the defect that the tubing head cannot prevent blowout

Method used

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  • Blowout control tubing head and oil and gas wellhead device
  • Blowout control tubing head and oil and gas wellhead device
  • Blowout control tubing head and oil and gas wellhead device

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Embodiment Construction

[0010] refer to figure 1 , figure 2 , image 3 Make the invention.

[0011]A blowout-proof oil pipe head and an oil-gas wellhead device thereof, which include a blowout-proof oil pipe head and an oil-gas wellhead equipped with a blowout-proof oil pipe head, and a manual blowout prevention mechanism is arranged on the blowout-proof oil pipe head. The blowout-proof tubing head is mainly composed of a tubing hanger 16, a housing 12, and a manual ram blowout-preventing assembly 14. The blowout-proof oil pipe head includes two manual ram blowout preventer assemblies, and the two manual ram blowout preventer assemblies cooperate with each other to form a structure of a pair of manual ram blowout preventer assemblies. The manual blowout prevention mechanism is an integral manual blowout prevention structure formed by the mutual cooperation and connection of the housing and a pair of manual ram blowout prevention assemblies. The blowout-proof tubing head also includes an upper fl...

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Abstract

The invention discloses a blowout control tubing head and an oil and gas wellhead device provided with the blowout control tubing head. A manual blowout control mechanism is arranged on the blowout control tubing head and is mainly composed of an oil tube hanger, a shell and a manual gate blowout control assembly, and the manual blowout control mechanism can hang a tubing string, seal the annular space between a tubing and an oil string, and achieve blowout control. The oil and gas wellhead device provided with the blowout control tubing head does not need another blowout control unit to achieve blowout control, so that the height of the oil and gas wellhead device is not increased or only increased a bit, and the production cost of the oil and gas wellhead device is also reduced; furthermore, structure is scientific and reasonable.

Description

technical field [0001] The invention relates to an oil pipe head and its oil-gas wellhead device, in particular to a blowout-proof oil pipe head and its oil-gas wellhead device. Background technique [0002] The oil and gas wellhead device is installed at the wellhead to suspend casing strings and tubing strings, and to seal the annular space between the casings of each layer and the tubing. It can carry out oil and gas production operations, and can control the pressure and pressure of the production wellhead. It can be used to adjust the wellhead flow rate of oil and gas wells, and can also be used for acid fracturing, water injection, testing and other special wellhead operation equipment. It has the characteristics of simple structure, small size, convenient operation and stable performance. Oil and gas wellhead devices are mainly composed of casing head, tubing head, spool, bypass fittings, throttle valve, flat plate valve, stop valve, pressure gauge, flange and fastene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/06E21B33/03
Inventor 张树平张飘石卞康群
Owner JIANGSU GUIXIN PETROLEUM EQUIP
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