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Ball injector for hanging drilling liner cementing tail pipe base and control method thereof

A technology of liner cementing and ball feeder, which is applied in the field of ball feeder, can solve the problems of temporary failure of remote control of ball feeder, and achieve the effect of wide application range, guaranteed reliability and simple operation

Active Publication Date: 2015-01-07
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to: aim at the above existing problems, to provide a liner cementing liner seat hanger and its control method that can be matched with the cement head, mainly used to solve the problem of remote control of the ball launcher in the prior art. To control the problem of temporary failure, there is no need to remove the cement head and manually throw the ball again, ensuring the reliability of the cementing and cementing operations

Method used

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  • Ball injector for hanging drilling liner cementing tail pipe base and control method thereof
  • Ball injector for hanging drilling liner cementing tail pipe base and control method thereof
  • Ball injector for hanging drilling liner cementing tail pipe base and control method thereof

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Embodiment Construction

[0034] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0035] Any feature disclosed in this specification (including any appended claims, abstract), unless otherwise stated, may be replaced by alternative features that are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0036] like Figure 1 to Figure 4As shown, the ball thrower for hanging the liner seat of the liner cementing well of the present invention includes an assembly set 21 and a cavity body 17; the cavity body 17 is arranged in the assembly set 21 to form an accommodating cavity; The set screw 11 passes through the cavity body 17 outwardly from the containing cavity and is connected with the reciprocating push mechanism. The reciprocating push mechanism includes a cylin...

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Abstract

The invention discloses a ball injector for hanging a drilling liner cementing tail pipe base and a control method thereof, and belongs to the technical field of petroleum and natural gas production. The ball injector comprises an assembly sleeve and a cavity body, wherein the cavity body is arranged in the assembly sleeve to form an accommodating cavity; screws arranged on the cavity body outwards penetrate through the cavity body from the inner of the accommodating cavity, and are connected with a reciprocating pushing mechanism; a plurality of brackets positioned in the accommodating cavity are arranged on the cavity body, and are provided with keeping jaws; and the ends of the screws and the keeping jaws fit to grab base hanging balls in the accommodating cavity. The ball injector is mainly used for solving the problem of temporary fault of remote control of a ball injector in the prior art, has no need to renewedly unload a cement head for manual ball injection, and guarantees the reliability of ball injection and well cementing operation.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas exploitation, in particular to a ball feeder on a rotary cement head during rotary liner cementing. Background technique [0002] Well cementing is to use cementing equipment to inject cement into the outer annular space of the casing in the oil and gas well where the casing is run, so as to effectively seal between the casing and the formation. This process requires the use of a liner hanger to connect the liner (casing) to the upper casing. Most liner hangers can be classified according to their seating mechanism, either hydraulic or mechanical Seat type. The seating mechanism of the hydraulic seating type stern tube hanger is to realize the seating through the fluid pressure difference of the hydraulic cylinder in the stern tube hanger. In order to prevent the tailpipe from being accidentally seated during lowering, the hydraulic cylinder is secured by shear pins. Normally the cy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/13E21B23/01
CPCE21B33/13E21B23/01
Inventor 王国荣张敏何霞胡刚蒋龙楚飞陈宝康
Owner SOUTHWEST PETROLEUM UNIV