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Method for improving well quality

a well quality and well technology, applied in the field of wells, can solve the problems of contaminated oil coming from oil wells, general undesirable contaminants, etc., and achieve the effects of improving the quality of liquid, increasing the amount of cleaner liquid, and increasing the level of radionuclides

Inactive Publication Date: 2005-07-14
AQUASTREAM
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AI Technical Summary

Benefits of technology

"The present invention provides a method for improving the quality of liquid drawn from a well by modifying the well equipment to enhance the amount of cleaner liquid and reduce the amount of contaminated liquid. This is achieved by sampling the liquid from the well to determine which sections produce the cleanest liquid and using a suction flow control device to enhance the suction from the cleaner sections and inhibit the suction from the more contaminated sections. The invention also includes flow control disks to reduce the mixing of liquid from different sections and a theory that suggests removing the mineral cake from the well wall to decrease contamination and increase the flow rate of water. The use of the suction flow control device results in a wider distribution of energy throughout the well, leading to slower-moving water and decreased pressure drop, which may reduce the precipitation of minerals."

Problems solved by technology

Other contaminants that are generally undesirable include arsenic, iron, and others.
Similar to water wells, oil coming from oil wells can be contaminated.

Method used

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  • Method for improving well quality
  • Method for improving well quality
  • Method for improving well quality

Examples

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Embodiment Construction

[0015]FIGS. 1-4 illustrate one embodiment of the present invention as used in connection with the treatment of a water well for purposes of reducing the level of radionuclides in water pump from the well. Of course, it should be understood that other contaminants could be removed using the same of similar process. The illustrated embodiment utilizes a two-phase process to reduce contamination of water pumped from a water well.

[0016] Phase I includes gathering data regarding historical well performance, sampling and logging the characteristics of water from different sections of the well, and cleaning the well. Data gathering involves collecting and reviewing historic data about the well. This data includes hydraulic, water chemistry, and geologic information. In the event that recent data is not available at different flow rates, this data can be collected prior to removing the pump. The primary purpose of this step in the process is to provide a base line against which future data...

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Abstract

A method of improving the quality of liquid coming from a well that has a pump and pipe assembly. The method includes identifying a region of the well that is low in contamination and a region of the well that is high in contamination, and modifying the pump and pipe assembly so that suction of the assembly is enhanced in the region that is low in contamination and inhibited in the region that is high in contamination. Modifying the pump and pipe assembly can include coupling a suction control device to the pump and pipe assembly, and positioning the suction control device in the region of low contamination. In addition, modifying the assembly can include positioning a flow control disk in a location that is substantially between the region of low concentration and the region of high concentration.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a divisional application of U.S. patent application Ser. No. 10 / 239,738, filed Sep. 25, 2002, which is a §371 of PCT / US01 / 10311, filed Mar. 29, 2001, which claims the benefit of 60 / 192,915, filed Mar. 29, 2000. The entire contents of these applications are hereby incorporated by reference herein.FIELD OF THE INVENTION [0002] The present invention generally relates to wells, such as water wells and oil wells, and specifically relates to methods for improving the quality of the liquid (e.g., water or oil) removed from wells. BACKGROUND OF THE INVENTION [0003] In 1976, the United States Environmental Protection Agency (EPA) promulgated interim drinking water standards under the Safe Drinking Water Act (SDWA). In 1991, the EPA proposed revisions to the 1976 requirements, and in 1996 the SDWA was amended. The amended SDWA established a list of contaminants to be regulated under primary standards and secondary standards. T...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E03B3/15E21B37/00E21B43/14
CPCE03B3/15E21B43/14E21B37/00
Inventor JACKSON, RICHARD C.JUDKINS, MICHAEL E.
Owner AQUASTREAM
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