status of api calibration pits_br

7/27/2019 Status of API Calibration Pits_BR

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UH(API) Nuclear Logging CalibrationFacility

Richard Liu, Professor

University of HoustonOct. 8, 2011


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Agenda

History of the API nuclear calibration

pits

Introduction to the pits

The purpose of the facility

Usage and maintenance

Operation of the pits


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API Nuclear Calibration Facility

Gamma Ray and Neutron Porosity

Gamma Ray Spectroscopy(POTASSIUM-URANIUM-THORIUM, K-U-Th)


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Gamma

& neutron

K-U-Th


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N


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Gamma Ray and Neutron

Porosity

Built in 1957-1958

Agreement between API and U ofHouston

API provided funds

UH provided land and maintenance

May cancel agreement after 7 years


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54 Years Ago


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Core Preparation


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Construction


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API Neutron and Gamma Ray

Calibration Facility (1995)


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Neutron pit Gamma Ray pit


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Technical Information

API RP 33

Web site:http://welllogging.egr.uh.edu/Information.html


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2


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K-U-Th Pits

Constructed in 1983

Agreement between API and U of

Houston (1982-1983)

API provided funds

UH provided land and maintenance

Treated as an addition to the gamma rayand neutron pits


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Gamma

& neutron

K-U-Th


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Technical Information

API RP 65

has not been officially endorsed by API

Presented in Well Logging Laboratory

Technical Report No. 23 (2002)

Web site:

http://welllogging.egr.uh.edu/Information.html


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Figure 1. KUTh Pit No. 1 (North pit)


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Restrictions for use of this

borehole. See Sec. 4.7

KUTh Pit No. 2 (South Pit)


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Physical Conditions

Gamma Ray and Neutron Pits

Television camera inspection of neutron pit

Conducted in April 1987

Ralph Wiley & Jerry Bowen,Amoco In remarkably good condition

Confirmed existence of small fractures noted inRP33

Small grooves and gouges were observed

Do not seriously affect the utility of the pit

Document and photos archived at WLL


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Physical Conditions

K-U-Th Pits

Television camera inspection

Conducted in February 1994

By Halliburton

Video tape archived at WLL


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Usage of Calibration Facility

by Company 2009-2011

Alpha Neutronics, Inc.,

Schlumberger

ThruBit LLCTucker Energy Services

Century Wireline

Pioneer Wireline Services

GE Energy

Probe Technology Services

US Geological Survey

Halliburton Energy Services

Teledrill Inc.,

Pathfinder

Weatherford Intl.Etudes et Productions

Schlumberger

Tucker

Hotwell US LtdBakerHughes

Wood Group


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Usage of calibration pits 2000-2011

API Usage 2000-2011

0

5

10

15

20

25

30

00 01 02 03 04 05 06 07 08 09 10 11

Year

A

P

I

U

s

a

e

Gamma

Neutron

Gamma+KUTH


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Annual Reports

Before 1995:

Mr. C. O. Liles

American Petroleum Institute700 North Pearl Street, Suite 1840

Dallas, TX 75201-2845

1995-2000Mr. Tim Sampson

American Petroleum Institute

1220 L street, NWWashington, DC 20005

status of api calibration pits_br

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