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A hydraulic range-extending pumping unit for an offshore platform

An offshore platform and program extension technology, which is applied to liquid variable volume machinery, mechanical equipment, machines/engines, etc., can solve the problem of not finding public documents, achieve low noise, prolong the pump inspection period, and occupy a small space. Effect

Active Publication Date: 2018-10-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] After searching, no public documents that can solve such technical problems have been found

Method used

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  • A hydraulic range-extending pumping unit for an offshore platform
  • A hydraulic range-extending pumping unit for an offshore platform

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Embodiment Construction

[0017] 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.

[0018] according to Figure 1-2 , a hydraulic extended-range pumping unit for offshore platforms, one end of the steel wire rope 2 is fixed on the beam of the movable support 5, bypasses the secondary sky wheel 6 and the main sky wheel 3, and is suspended on one side of the hydraulic extended-range pumping unit for the offshore platform, Connect with hanger 1.

[0019] Wherein, the main sky wheel 3 is installed on the moving bracket 5 through the main rotating shaft 4 . One side of the upper part of the moving support 5 is provided with a triangular support, and the lower end is a piston-type structure 501, which is sealed with the inner cavity of the inner liquid cylinder 14. The secondary sky wheel 6 is connected...

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Abstract

The invention discloses an offshore platform hydraulic extended-stroke oil pumping unit which comprises an oil pipe arranged in an oil well casing and an oil pump arranged in the oil pipe. The oil pump is connected with a driving device above through an oil sucker rod, the driving device comprises a primary hydraulic cylinder, an inner hydraulic cylinder, a secondary hydraulic cylinder, a moving support, a piston frame, a primary head sheave and a secondary head sheave, the inner hydraulic cylinder is mounted in the primary hydraulic cylinder and used as a piston of the same, the lower end of the moving support is of a piston-type structure and is mounted in the inner hydraulic cylinder and sealed with an inner cavity of the same, the upper end of the piston frame is hinged to a rotating shaft of the secondary head sheave while the lower end of the same is of a piston-type structure and is sealed with an inner cavity of the secondary hydraulic cylinder; the primary head sheave is arranged at the upper end of the moving support and arranged at one end, fixed with a steel wire rope, of the moving support, the steel wire rope sequentially bypasses the secondary head sheave and the primary head sheave and then is connected to a hanger, and the hanger is connected with the oil sucker rod. The offshore platform hydraulic extended-stroke oil pumping unit is suitable for offshore platforms with narrow space and has the advantages of high-strength polished rod load, cleanliness and energy conservation.

Description

technical field [0001] The invention relates to oilfield exploitation equipment, in particular to a hydraulic range-extending pumping unit for an offshore platform. Background technique [0002] During the development of oil fields, due to the influence of high viscosity of crude oil, low production capacity and high temperature of steam injection, heavy oil wells generally need to be exploited through conventional pumping units and thickening pumps. During the production process, a large amount of electric energy is consumed to drive these pumping units. In operation, the use of pumping units not only increases the floor area but also wastes electric energy, it is not feasible in the limited space of offshore platforms. Currently, electric heating is used to assist electric pumps in mining on offshore platforms, which consumes a lot of energy and has a low recovery rate. In this case, the hydraulic pumping unit has obvious advantages in mining heavy oil. Combining with the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00F04B47/00
Inventor 李德忠谷开昭孙宝全刘红兰隋旭强王登庆任从坤徐戍聂文龙车传睿张福涛王进京刘玉国
Owner CHINA PETROLEUM & CHEM CORP
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