Hoisting system of stripper well in oil field

A technology for low-yield wells and oil fields, applied in drilling equipment, wellbore/well components, and production fluids, etc., can solve the problems of poor implementation of wire rope sucker rods, poor sealing effect of dynamic seal wellheads, and small adjustment range of stroke, etc. The effect of light and miniaturized safe operation, reduced maintenance cost, and improved sealing effect

Inactive Publication Date: 2009-10-07
DAQING OILFIELD CO LTD
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AI Technical Summary

Problems solved by technology

[0006] It mainly solves the problems of low effective load rate, high energy consumption and large one-time investment of the existing low-production well lifting system
At the same time, it solves the problems that the existing double-range pumping unit has high requirements on the foundation, the stroke adjustment range is small and inconvenient, and the existing dynamic sealing wellhead sealing effect is poor, and the implementation effect of the steel wire rope sucker rod is poor.

Method used

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  • Hoisting system of stripper well in oil field
  • Hoisting system of stripper well in oil field
  • Hoisting system of stripper well in oil field

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing:

[0020] Depend on figure 1 combine figure 2 , image 3 As shown, the low-production well lifting system in this oilfield includes a double-range flexible pumping unit, a double-range flexible pumping unit wellhead and a composite functional unit sucker rod string.

[0021] Depend on figure 1 As shown, the composite functional unit sucker rod string is composed of adjustment short connection 1, composite steel wire rope 2, upper weighted rod 3, fiber rope 5, ring chain 4, middle weighted rod 6, vibration rod 7, lower weighted rod 8 And pull rod 9 is formed in series successively. The main purpose of using composite steel wire rope 2 for the pole column is to reduce dead weight. In order to ensure the safe and reliable implementation of the composite steel wire rope 2, the upper weighted rod 3, the ring chain 4, the fiber rope 5, the middle weighted rod 6, the vibration ...

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Abstract

The present invention provides a hoisting system of stripper well in oil field. The invention mainly settles the problems of high operation cost, more initial investment, large dimension of unit assembly and large deadweight. The invention is characterized in that the hoisting system of stripper well in oil field is composed of a double flexible pumping unit, a double flexible pumping unit wellhead and a composite functional unit sucker rod string. The hoisting system not only has low operation cost when operating on the stripper well, but also has the characteristics of less initial investment, small dimension of unit assembly and small deadweight.

Description

Technical field: [0001] The invention relates to an oil production lifting system used in the field of oil production in an oil field, in particular to a low production well lifting system in an oil field. Background technique: [0002] Petroleum is an important strategic material related to national stability, development and security. With the increase of oil demand year by year, oilfield development is gradually shifting to low-yield and low-permeability reservoirs. With the development of the third infill in Daqing and the development of the Fuyang oil layer, the number of low-yield wells with a single-well fluid production below 20t / d has been increasing. According to incomplete statistics, there are nearly 20,000 wells with a production below 20t / d. How to exploit low-yield wells economically and efficiently is not only the need for energy saving and consumption reduction to improve economic benefits, but also has very important significance for reducing the economic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B17/00
Inventor 张佳民胡松华白存安
Owner DAQING OILFIELD CO LTD
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