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Top driving well cementing casing head

A technology of cementing cement and injection head, which is applied in wellbore/well components, earthwork drilling and production, sealing/isolation, etc. It can solve the problems of inability to place sealing balls, single function, and inability to withstand high torque and high loads, etc. To achieve the effect of ensuring the continuity of operations

Active Publication Date: 2015-04-01
BAOJI PETROLEUM MASCH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a top-driven well cementing cement head, which solves the problems that the existing cement head has many specifications, single function, cannot withstand high torque and high load, cannot put seat sealing balls, and has high risk of operation safety.

Method used

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  • Top driving well cementing casing head
  • Top driving well cementing casing head
  • Top driving well cementing casing head

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] refer to figure 1 , the overall structure of the device of the present invention is to include an upper joint 100, the upper joint 100 is upwardly connected with the drill pipe pup joint 20 or other lifting tools, the upper joint 100 is downwardly connected with the upper main body assembly 200 through the thread pair A110, and the upper main body assembly The equipment in the assembly 200 is connected to the outside through the air intake pipeline 40, the upper main body assembly 200 is connected downwardly with the lower main body assembly 400 through the quick connection mechanism 300, and the lower main body assembly 400 is connected downwardly with the lowermost drill pipe sub-joint 30 The casing string or other tubular objects extending into the bottom of the well are connected; the upper main body assembly 200 and the lower main...

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Abstract

The invention discloses a top driving well cement casing head. The top driving well cement casing head comprises an upper connector which is downwards connected with an upper body assembly; a device in the upper body assembly communicates with the outside through an air inlet pipeline; the upper body assembly is connected with a lower body assembly through a quick connecting mechanism; a pneumatic actuator is arranged in each of the upper body assembly and the lower body assembly; a ball feeding device in the lower body assembly is connected to the outside through a pneumatic pipeline. According to the top driving well cementing casing head, a sealing sleeve is used for isolating liquid under overflowing, and a connecting sleeve axially connects an upper body and a lower body, so as to bear a high load; the pneumatic actuator, an indicator and the like can be used for remotely controlling and indicating the ball feeding.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment and relates to a top-driven well cementing cement head. Background technique [0002] Offshore oil and gas exploration and development is a high-risk, high-investment undertaking. At present, fixed, semi-submersible and floating drilling platforms are mainly used in offshore oil and gas development. However, the existing cement head has a large turning space, low tensile strength, and weak torsion bearing capacity. It can only put in a single type of rubber plug (drill pipe rubber plug or casing rubber plug, etc.), and cannot cast and seal the ball. The operation process needs to be stopped. Pump etc disadvantages. It cannot meet the needs of offshore oil and gas development, nor can it fully meet the needs of deep and ultra-deep wells on land. At the same time, the cementing pressure is increasing. Conventional cementing requires the operator to work at close range, not only to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/13
CPCE21B33/13
Inventor 惠坤亮阎永宏张宏桥王德贵祝贺谢新安
Owner BAOJI PETROLEUM MASCH CO LTD
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