Energy saving and efficiency increasing system for output well and (or) injection well

Abstract

An energy saving and efficiency increasing system includes three parts of well-head measurement and control, channel and down hole measurement and control. The well-head measurement and control is composed of a pump condition and well-head multi-sensor collecting plug-in, an electric power plug-in, a DSP plug-in, a detection plug-in, and a measurement and control drive and backup plug-in that are designed according to industrial standard. In a post-pluggable 6U standard totally enclosed aluminum alloy structure chassis, front and rear panels are connected by MMI and motherboard assembly to form an independent system. The channel part and the down hole measurement and control part are matched by multi-parameter measurement and control sensor system of smart well (in other patents). The system blends the output well and (or) injection well as well as multi-parameter well condition of well layer system via the channel with well-head measurement and control information so that the pump condition of the pump and the well condition are displayed in a same platform after spatio-temporal synchronization.

Description

Technical field: [0001] The invention relates to an energy-saving and efficiency-enhancing system, in particular to an oil field output and (or) injection well circulation energy efficiency system. The system can realize combined energy saving and production increase of output and / or injection wells based on frequency modulation, and economical and reliable production operation. Background technique: [0002] It is known that the general frequency conversion speed regulation power saving technology actively promoted at home and abroad, the power saving rate can reach 10%-20%. They save power by feeding back the frequency of the modulation electrode according to the size of the load. As for the type and effectiveness of the load is not considered. As we all know, the extraction pump (screw pump) is an unbalanced power system widely used in oil fields. The power source used is a three-phase asynchronous motor or a multi-stage electric pump. Factors such as low disadvantages....

AI Technical Summary

Problems solved by technology

However, under actual working conditions, the motor load rate is generally low, and the phenomenon of "big horse-drawn carts" is serious, resulting in a huge waste of electric energy

(2) The power factor is reduced, and the power consumption is large. When the power frequency works, the electric submersible pump always works at the rated speed. If the downhole fluid is in short supply, it is easy to cause a "dead well" and cause heavy losses.

(3) Motors and pumps have been operating under high pressure for a long time, sometimes due to severe sand production in oil wells, the life of the equipment is shortened, especially the "dead well" accident caused by the inability to solve the shortage of downhole fluid in time

(4) The traditional adjustment method is to adjust the output by changing the oil nozzle, so that the inaccurate control will cause energy waste

For example, common "working condition" accidents include oil rod breakage, oil pipe serious leakage, pump serious leakage, wax plugging, rotor detaching from stator, pump jamming and various natural disasters, etc., which will cause great production losses and will cost a lot of money. maintenance cost

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