Oil production method with no pole and oil production system
A rodless oil production and crude oil technology, which is applied in the direction of production fluid, earth drilling, liquid variable capacity machinery, etc., can solve problems such as rod and pipe eccentric wear, reduce production costs, prolong workover period, etc., and achieve suspension point load reduction , reduce energy consumption, and solve the effect of rod and tube eccentric wear
Inactive Publication Date: 2008-06-18
OIL EXTRACTION TECH INST OF SINOPEC SHENGLI OILFIELD
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Problems solved by technology
[0004] The purpose of the present invention is to provide a rodless oil production method and oil production system, overcome the defects of the existing rodless oil production technology, adopt the ground reversing technology and downhole pumping technology with mature technology and high reliability, and use hydraulic power to transmit power, Extend the workover period, effectively solve the problem of eccentric wear of the rod and pipe, and reduce production costs
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[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings: Referring to accompanying drawing 1, a rodless oil production method is to draw underground crude oil by a rodless oil production system driven by a pumping unit. The power of the ground pumping unit is transferred through the liquid through energy conversion. In the present invention, the power transmission liquid is the produced fluid in the well, and the power transmission liquid may also be a liquid circulation system from the ground, such as a hydraulic power station system. If the ground hydraulic power station system is used to transmit power, it is necessary to communicate the ground power fluid with the annulus between the large oil pipe 5 and the small oil pipe 7 at the wellhead. The rodless oil production system of the present invention includes a downhole crude oil lifting part and a downhole pipe string, and a pumping unit is used as a surface driv...
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The invention discloses a rodless oil-extracting method and system used in oil industry, especially applied to pumping oil from inclined and directional wells and preventing the damage of partial wear of tubular column to the oil well. The method uses oil pump to drive the system to draw the underground crude oil. And the system includes an underground crude oil hoisting part and a under ground tubular column, using the oil pump as a ground driving device and provided a wellhead power part. A hollow polish rod connects the wellhead power part with a power output end of the oil pump to form a power hydraulic transmission channel and forms a stratum liquid producing channel by the wellhead power part connecting with the underground crude oil hoisting part. Because there is no oil pump rod under a wellhead power pump in a wellhole, it applies to oil extraction from large-slope and directional wells.
Description
technical field [0001] The invention belongs to the oil production method and equipment in the petroleum industry, in particular to a rodless oil production method and an oil production system, which is suitable for various oil wells, especially inclined wells and directional wells, and completely eliminates the wear and tear of the oil production rod tube of the rod pump. Damage caused by oil wells. Background technique [0002] In the petroleum industry, rod pump oil extraction is the most important oil extraction method. Rod pump oil pumping system has the longest development time, complete process and mature technology. The equipment is simple and durable, and the failure rate is low. However, when used in high water cut, deep pumping, inclined wells, and directional wells, there are problems such as serious eccentric wear of rods and pipes, low system efficiency, and a sharp drop in maintenance-free period. Although auxiliary parts such as centralizers have been adop...
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IPC IPC(8): E21B43/00F04B47/02
Inventor 程正全徐建礼姜东罗燕孙衍东
Owner OIL EXTRACTION TECH INST OF SINOPEC SHENGLI OILFIELD