Wellhead heat insulation and heating equipment for well workover

A technology for heating device and workover, which is applied to isolation devices, wellbore/well components, earth-moving drilling, etc., can solve problems such as freezing accidents, and achieve the effects of energy saving, convenient disassembly and assembly, and strong immediacy

Inactive Publication Date: 2012-06-27
DAQING GASOLINEEUM INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a heat preservation and heating device for the workover wellhead, which is used to solve the problem of freezing accidents when the wellhead equipment stops working at night during the workover construction in winter

Method used

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  • Wellhead heat insulation and heating equipment for well workover
  • Wellhead heat insulation and heating equipment for well workover
  • Wellhead heat insulation and heating equipment for well workover

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This kind of workover wellhead insulation heating device diesel generator set, heating control cabinet, three-gate insulation heating device, wellhead four-way insulation heating device, anti-theft valve insulation heating device; the diesel generator set is connected with the heating control cabinet with cables, and the heating control cabinet provides The safety voltage heats the above-mentioned heat preservation and heating devices. The heating control cabinet is the core component connecting the generator set and each heat preservation and heating device. Voltage, power distribution and safety protection and other functions.

[0027] Considering the power demand, the portability of the device and the energy saving requirements, in this embodiment, two diesel generator sets with the same power are selected, and the safe voltage is transformed through two heating control cabinets to provide the thermal insulation and heating device for the three gates, the thermal insu...

Embodiment 2

[0035] Compared with Embodiment 1, this embodiment also includes a ground casing heat preservation and heating device, and others are the same as Embodiment 1. When the exposed casing on the ground is long, this embodiment is selected. Figure 8 and Figure 9 A schematic diagram of the structure of the ground casing heat preservation and heating device in the present invention is provided. As shown in the figure, the ground casing heat preservation and heating device in this embodiment is detachable, and consists of two heating units (1c, 2c) on the left and right The cylindrical body formed by fastening the bolts 7 together, the shape of the cavity formed after the two heating units are fixed together is the same as the shape of the ground casing, which is also cylindrical, and the ground casing can be fastened together Among them; the two heating units are semicircular shells, the inner wall of the shells has an insulating layer 3, an electric heating element is installed in...

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Abstract

The invention relates to a well-repairing well head temperature insulating heater which is a protector for preventing the ground well head from being frozen in the belt pressure well repairing operation in the extremely cold area of China of the petroleum industry oil extraction input well. The device comprises a diesel power generating set, a heating control cabinet, a triple ram temperature insulating heater, a well head four-way temperature insulating heater and an anti-theft valve temperature insulating heater, wherein, the diesel power generating set is connected with the heating controlcabinet through a cable, the heating control cabinet provides the safe voltage for each temperature insulating heater to heat; each temperature insulating heater is detachable and is formed by fixingat least two heating single bodies by fastening bolts, and the heating single bodies are fixed together and can buckle the triple cam or the four-way or the anti-theft valve. The well-repairing well head temperature insulating heater is convenient to assemble and disassemble; when the well-repair operation of the oil extraction input well is stopped at night, the well-repairing well head temperature insulating heater is arranged out of the well head device to heat the well head device which is not be frozen; while in the operation on the next day, the well-repairing well head temperature insulating heater can be disassembled conveniently and construction is normally operated, thereby greatly raising the well-repair construction efficiency.

Description

1. Technical field: [0001] The invention relates to a protective device for preventing ground wellheads from freezing during pressurized workover operations in alpine regions of oil production and water injection wells in the petroleum industry, and in particular to a heat preservation and heating device for workover wellheads. 2. Background technology: [0002] In oil production and water injection well workover operations under pressure in the petroleum industry, the main exposed heat dissipation components of the wellhead device of the oil well include three rams, wellhead crosses, anti-theft valves, and ground exposed casings. The wellhead cross is connected to the exposed casing on the ground, and the other two outlets of the wellhead cross are connected to the anti-theft valve. Since the three major oilfields in Northeast China are in the middle and late stage of development, the workover of oil production and water injection wells is very heavy, and construction needs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/03E21B36/04
Inventor 谭英杰刘晓燕刘立君赵海谦
Owner DAQING GASOLINEEUM INST
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