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Blowout prevention self-lifting and pressure logging construction process

A construction technique and well logging technology, applied in measurement, wellbore/well parts, earthwork drilling and production, etc., can solve the problems of high cost and limited scope of application, and achieve low equipment cost, convenient movement, and small size and weight Effect

Pending Publication Date: 2020-08-25
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a self-lifting pressure logging construction technology for blowout prevention to solve the problem of high cost and limited scope of application caused by the use of derrick trucks in the existing construction technology. question

Method used

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  • Blowout prevention self-lifting and pressure logging construction process
  • Blowout prevention self-lifting and pressure logging construction process
  • Blowout prevention self-lifting and pressure logging construction process

Examples

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Effect test

Embodiment 1

[0052] Such as Figure 1~3 As shown, a kind of blowout prevention self-lifting well logging construction technology under pressure of the present invention comprises the following steps:

[0053] Step 1: First connect the blowout preventer with the wellhead Christmas tree, then install the anti-dropout device above the blowout preventer, install the ground pulley outside the blowout preventer, and connect the anti-dropout device with the base bracket through the mechanical connection mechanism Together, the bottom of the base bracket is fixed to the ground by the adjustment rod, forming a solid foundation for the entire lifting system.

[0054] Step 2: Install the suspension frame on the top of the base bracket, install the cable in the sky pulley, install the sealing head above the suspension frame, and temporarily fix the sealing head at this position through the limit slip 8. Put the first blowout preventer vertically on the lifting frame by manpower, turn on the motor 5 t...

Embodiment 2

[0063] Well Logging in Island Type Well Fields in Water Network Areas by Utilizing the Technology of the Present Invention

[0064] Logging process step is the same as embodiment one

[0065] For island-type well sites affected by seasonal flood floodplains or the agricultural production of surrounding paddy fields, in the past, due to the limitation of the traffic capacity of logging vehicles and derrick vehicles on shallow muddy roads, they could only enter the construction site during the dry season or winter when the water body freezes Logging is implemented, and due to the short sunshine time and low temperature, only one well can be operated per day. Generally, each well can only be tested once a year. The data lag is serious, and it is impossible to grasp the changes in water injection conditions and adjust water injection policies in time, which will affect Crude oil production, waste of invalid water injection costs, and many on-site production operation risks such as...

Embodiment 3

[0068] Utilizing the technology of the present invention to carry out well logging construction on the offshore platform

[0069] During the construction of the offshore platform, the base support, downhole equipment, suspension frame, etc. are lifted from the transport ship to the vicinity of the Christmas tree with a ship crane, and the wellhead installation is completed in about half an hour by two operators, and the installation steps of the logging process are the same. Embodiment one. Utilize the technology of the present invention, needn't occupy expensive ship crane as before. Compared with the existing manpower or hydraulic simple mast-type lifting device, the vertical lifting method has a stronger operating ability due to the subtraction of the mast system and no influence of the lifting moment. The typical lifting height has been raised from 4-5m to more than 8m. Adapting to the increase of the wellhead pressure from about 14MPa to over 21MPa (more weight rods can ...

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Abstract

The invention discloses a blowout prevention self-lifting and pressure logging construction process, and belongs to the technical field of oil field logging operations. The vertical installation and disassembly of a blowout prevention device are realized through a base support and a suspension frame on the base support. The autonomous lifting and pressure logging construction of the blowout prevention device under the condition of no derrick truck is achieved, the configuration of a single operation team saves one professional derrick truck and one professional operator, the construction costis greatly reduced, and compared with a derrick truck, by applying the construction process, the annual cost of each operation team can be saved by nearly 400,000 yuan, and the productivity effect issignificantly improved.

Description

technical field [0001] The invention belongs to the technical field of oil field logging operations, and relates to a blowout prevention self-lifting pressure logging construction technology. Background technique [0002] The construction operation of hot logging requires the use of high-pressure blowout preventer for wellhead control, in which the sealing head is used to seal the liquid in the well, and the blowout preventer string is used to accommodate the logging instrument string. The device is used to prevent the downhole instrument from accidentally falling into the well. Since the combination of the downhole equipment and the weighted rod for balancing the wellhead pressure is relatively long, the length of the blowout preventer string is correspondingly relatively large, and the typical length is about 13m. Therefore, in the installation and construction of the traditional downhole equipment, the blowout preventer string is firstly manually operated. It is connecte...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B33/06E21B23/00
CPCE21B47/00E21B33/06E21B23/00
Inventor 秦民君王志兴冯宇涵孙小科王志峰傅强牛步能刘勇
Owner BC P INC CHINA NAT PETROLEUM CORP
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