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Non-well killing well mouth operation process and equipment of injection-production integrated thermal production process

A technology of thermal recovery technology and operation technology, which is applied in the direction of production fluid, wellbore/well components, earthwork drilling and production, etc. It can solve the problems of no public documents found, no snubbing operation, and can not be realized, so as to avoid cooling damage and Formation cold damage, huge economic benefits, and the effect of meeting the requirements of secondary well control

Inactive Publication Date: 2016-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are two problems in the injection-production integrated thermal recovery process: one is that it cannot realize complete snubbing operation
[0003] After searching, no publications identical with the present invention are found

Method used

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  • Non-well killing well mouth operation process and equipment of injection-production integrated thermal production process
  • Non-well killing well mouth operation process and equipment of injection-production integrated thermal production process
  • Non-well killing well mouth operation process and equipment of injection-production integrated thermal production process

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Embodiment Construction

[0024] The detailed description and technical content of the present invention are described below with the accompanying drawings, but the accompanying drawings are only provided for reference and description, and are not intended to limit the present invention.

[0025] figure 2 , a kind of snubbing steam injection wellhead equipment for injection-production integrated thermal recovery process, comprising a large cross 1, an upper half set 4 of a steam injection wellhead, and a hollow rod hanger 2, the upper end of the large cross passes through a main gate 3 and The upper half of the steam injection wellhead is connected, and the hollow rod hanger is arranged inside the large cross. When the hollow rod hanger is used for steam injection, the hollow rod with pump is connected to a hollow rod seat to hang the joint seat on the hollow rod hanger, and the diameter of the hollow rod hanger does not exceed the diameter of the total gate.

[0026] image 3 , a kind of injection-...

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Abstract

The invention discloses a non-well killing well mouth operation process and equipment of an injection-production integrated thermal production process. The non-well killing well mouth equipment comprises a large four-way joint, a steam injection well mouth upper half sleeve and a hollow rod hanger; the upper end of the large four-way joint is connected with the steam injection well mouth upper half sleeve through a head gate, and the hollow rod hanger is arranged in the large four-way joint. When the hollow rod hanger is used for steam injection, a hollow rod with a pump is connected with a hollow rod seat hanging joint and is hung on the hollow rod hanger, and the drift diameter of the hollow rod hanger does not exceed that of the head gate. The non-well killing well mouth operation process of the injection-production integrated thermal production process comprises the first step of mounting of a non-well killing steam injection well mouth, the second step of mounting of a rod lifting and tripping well mouth after steam injection and the third step of mounting of a well completion well mouth. Rod lifting and tripping of the non-well killing well mouth of the thermal production completion and injection well can be achieved, and the secondary well control requirement can be met.

Description

technical field [0001] The invention relates to the operational field of an injection-production integrated thermal recovery process for heavy oil thermal recovery wells in an oil field, in particular to a snubbing wellhead operation process and equipment for an injection-production integrated thermal recovery process. Background technique [0002] Injection-production integrated thermal recovery technology is a combination of injection-production integrated rod pump and matching pipe and rod, and uses one string to realize the two technological processes of steam injection and oil recovery, that is, both rotation and pumping do not move injection Steam column. At present, there are two problems in the injection-production integrated thermal recovery process: one is that it cannot realize complete snubbing operation. The current injection-production integrated thermal recovery process with pump steam injection wellhead structure is bottom-up (such as figure 1 Shown) are: b...

Claims

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Application Information

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IPC IPC(8): E21B43/24E21B23/01E21B33/03E21B33/06E21B34/02
Inventor 王刚李建东张培智陈东王英华綦耀升朱学东盖康
Owner CHINA PETROLEUM & CHEM CORP
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