A wellbore flow model in the presence of CO{sub 2} gas

PDF Version Also Available for Download.

Description

The fluid produced by the geothermal wells in the Nigorikawa field which is located in southern Hokkaido, Japan’s northern island, is rich in carbon dioxide(CO{sub 2}). The dissolved CO{sub 2} causes a scale deposition problem of calcium carbonate(CaCO{sub 3}). Japan Metals and Chemicals Co., Ltd.(JMC) has already solved the CaCO{sub 3} scale deposition problem by injecting a scale inhibiting chemical fluid directly and continuously through a injection tube extending into the production well. The CaCO{sub 3} scale deposition occurs at the flash point. It is important, therefore, to estimate the flash depth correctly so that the depth of the chemical ... continued below

Physical Description

151-157

Creation Information

Takahashi, Masahiro January 1, 1988.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

The fluid produced by the geothermal wells in the Nigorikawa field which is located in southern Hokkaido, Japan’s northern island, is rich in carbon dioxide(CO{sub 2}). The dissolved CO{sub 2} causes a scale deposition problem of calcium carbonate(CaCO{sub 3}). Japan Metals and Chemicals Co., Ltd.(JMC) has already solved the CaCO{sub 3} scale deposition problem by injecting a scale inhibiting chemical fluid directly and continuously through a injection tube extending into the production well. The CaCO{sub 3} scale deposition occurs at the flash point. It is important, therefore, to estimate the flash depth correctly so that the depth of the chemical injection point can be determined. However, the boiling point curve of the geothermal fluid with dissolved CO{sub 2}is different from that of pure water{H{sub 2}O}. So, a wellbore flow model in the presence of CO{sub 2} gas has been developed. This model was tested by comparing the temperature and pressure values calculated by the computer to depth profiles drawn the Nigorikawa field data. As a result of the comparison, a satisfactory fitting has been obtained. A brief explanation of this model and a few examples of analysis by this model are presented.

Physical Description

151-157

Subjects

Source

  • Proceedings, thirteenth workshop on geothermal reservoir engineering, Stanford University, Stanford, CA, January 19-21, 1988

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Report No.: SGP-TR-113-22
  • Grant Number: AS07-84ID12529
  • Office of Scientific & Technical Information Report Number: 887175
  • Archival Resource Key: ark:/67531/metadc885793

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • January 1, 1988

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

Description Last Updated

  • Dec. 2, 2016, 6:24 p.m.

Usage Statistics

When was this article last used?

Congratulations! It looks like you are the first person to view this item online.

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Takahashi, Masahiro. A wellbore flow model in the presence of CO{sub 2} gas, article, January 1, 1988; United States. (digital.library.unt.edu/ark:/67531/metadc885793/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.