Gas-Driven Pumping Device and a Method for Downhole Pumping of a Liquid in a Well
a pumping device and well technology, applied in the direction of jet pumps, non-positive displacement pumps, borehole/well accessories, etc., can solve the problems of limited lifetime and/or application area, limited lifetime and/or the common construction of conventional downhole pumps, and limited scope of application
Inactive Publication Date: 2010-11-11
SHORE TEC CONSULT
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- Abstract
- Description
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AI Technical Summary
Benefits of technology
"The invention is a new pumping device and method for pumping liquid from a well. The device includes a pressure manipulation chamber that can change the pressure of gas and liquid to drive liquid from the well. The device can be controlled using sensors and valves to manage the flow of gas and liquid. It can be located in the well and can be connected to existing well equipment such as pipes and valves. The device can also include a water level stop device to control the liquid level in the chamber. The technical effect of the invention is to provide a more efficient and effective pumping device for pumping liquid from a well."
Problems solved by technology
Such conventional downhole pumps generally have relatively complex constructions in common, and / or they have many movable parts.
Normally, they are also comprehensive and / or complicated to drive, inspect and maintain.
Generally, this causes them to have a limited lifetime and / or a limited area of application, especially in deep wells.
This is generally reflected as operational and cost-related disadvantages.
Method used
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OF EMBODIMENTS OF THE INVENTION
[0135]FIGS. 1-6 show a first embodiment of a gas-driven pumping device 2 located in a subsurface well 4 including, among other things, an outer casing 6 and an inner production tubing 8. Although the well 4 is shown as a vertical well in all of FIG. 1-12, in practice it may also be a deviated well or a horizontal well. The casing 6 is also provided with perforations 10, 12, which are positioned vis-à-vis a production formation 14 and a shallower disposal formation 16, respectively, the disposal formation 16 having a pressure (Preceiving) and constituting a receiving region for liquid.
[0136]The pumping device 2 comprises a pressure manipulation chamber 18 located in an annulus 19 in the well 4, the annulus of which may extend for several hundred meters in the longitudinal direction of the well 4. The pressure manipulation chamber 18 is defined between the casing 6 and the production tubing 8, and between a first (upper) well packer 20 and a second (lowe...
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A gas-driven pumping device and a method for downhole pumping of a liquid from at least one liquid source in a well and onto at least one receiving region for the liquid. The pumping device comprises a pressure manipulation chamber having a lower chamber portion and an upper chamber portion, wherein the pressure manipulation chamber is connected in a flow-communicating manner toa liquid supply channel;a liquid discharge channel;a gas supply channel; anda gas discharge channel. By alternately lowering and increasing the gas pressure (Pchamber), liquid is pumped from the liquid source and onwards to the receiving region via the pressure manipulation chamber.
Description
AREA OF INVENTION[0001]This invention concerns a gas-driven pumping device and a method for allowing pumping of a liquid, for example water and / or oil, out of a well or within the well. The liquid may be comprised of water or oil emanating from a subsurface production formation connected to the well. The liquid may consist of a separated liquid, for example water-containing liquid, emanating from a downhole separator connected to such a production formation.[0002]Advantageously, the invention may be used in connection with downhole separation of oil and water emanating from a hydrocarbon- and water-containing production flow, as simultaneously injecting water-containing liquid into a subsurface disposal formation.[0003]The invention may also be used in all types of wells, including deviated wells and horizontal wells.[0004]1. Background of the Invention[0005]The background of the invention is an industrial need for a simple, operationally reliable and cost-efficient pumping solution...
Claims
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IPC IPC(8): E21B43/12
CPCE21B43/122E21B43/385E21B43/129
Inventor WOIE, RUNEHEGRE, THOR MARTIN
Owner SHORE TEC CONSULT