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Method of Producing a Low Pressure Well

a well and low pressure technology, applied in the direction of fluid removal, wellbore/well accessories, sealing/packing, etc., can solve the problem that the operator may not be able to recover most of the injected gas

Inactive Publication Date: 2009-01-08
FLUID COMPRESSOR PARTNERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention is a method for removing liquid from a well by injecting gas into the tubing and allowing the gas to lift the liquid to the surface. The gas is injected through a valve at the bottom of the tubing and the operator can determine when to stop injecting gas by detecting the level of liquid in the tubing and annulus. The method helps to keep the well running smoothly and efficiently."

Problems solved by technology

With very low pressure formations, the operator may not be able to recover most of the injected gas.

Method used

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  • Method of Producing a Low Pressure Well
  • Method of Producing a Low Pressure Well
  • Method of Producing a Low Pressure Well

Examples

Experimental program
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Embodiment Construction

[0011]Referring to FIG. 1, the well in this example has a vertical casing section 11. A branch has been drilled from the original vertical casing section 11, using a deflecting device 19 to form an inclined branch or section 13. A substantially horizontal section 15 extends laterally outward from inclined section 13 from a junction above the lower end of inclined section 13. The portion of inclined section 13 located below the junction with horizontal section 15 may be considered a sump section 17. Inclined section 13 and horizontal section 15 are illustrated to be open hole, containing no casing. Alternately, one or both could contain casing, a liner with perforations or a slotted liner.

[0012]A string of tubing 21 extends through vertical section 11, inclined section 13 and into sump 17. Deflecting device 19 serves to deflect tubing 21 over so that it will enter inclined section 13 while being run. Tubing 21 may comprise joints of conventional production tubing secured together by ...

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Abstract

A method of producing natural gas from a well has a mode that removes liquid collected in the well by injecting gas. The well has a string of tubing with a valve at its lower end that is submerged in the liquid produced by the well. An injection tube extends into the tubing. With the valve open, natural gas from the well flows up the tubing annulus and out the well to a gas pipeline and liquid flows into the tubing as well as into the injection tube. Periodically, an injection gas is injected down the injection tube with the valve closed to prevent the injection gas from flowing into the tubing annulus. This causes liquid collected in the tubing to be pushed to the surface and out of the well.

Description

FIELD OF THE INVENTION [0001]This invention relates in general to producing wells that have formations containing gas and liquid under low pressure, and in particular to a method of injecting gas to produce the liquid without affecting the gas producing formation,BACKGROUND OF THE INVENTION [0002]Many wells have formations that contain commercial quantities of gas but at low pressure. Most of these wells also produce liquid, which may be a gas condensate or it may be water or both. A variety of methods are employed in the prior art to produce the gas depending upon the particular conditions of the well.[0003]For example, an operator might utilize a plunger lift system. With the plunger lift system, a string of tubing extends into the well. The gas is produced up the annulus surrounding the tubing. The tubing has a plunger and a down hole gas lift valve that allow liquid being produced to flow into the tubing above the plunger. Periodically, the operator pressurizes the tubing annulu...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B43/16E21B43/12E21B43/18E21B43/34
CPCE21B43/34E21B43/121E21B43/13
Inventor COADY, PATRICK T.
Owner FLUID COMPRESSOR PARTNERS