Oil Well Logging Sealed Radioactive Sources.

QSA Global, Inc. has over 60 years of experience developing and manufacturing thousands of sealed radioactive sources for major oil well logging (OWL) companies worldwide, including Schlumberger®, Halliburton®, Weatherford®, Baker Hughes®, and numerous independent tool manufacturers.

Our OWL sources are rugged and designed for downhole use, resulting in fast, precise measurements in Wireline and Measurement While Drilling (MWD or LWD) applications.

Isotope Radiation Type Measurement Activity Range
Am-241 / Be Neutron Source Porosity 3-20 Ci
(111-740 GBq)
Cs-137 High Energy Gamma Source Density Up to 2.5 Ci
(93 GBq)

* Cf-252 and KUth calibrators also available

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Custom-Am-241Be-X9089
Am-241/Be X9089
Custom-Cs137-CDCK-4205
Cs-137 CDCK 4205
Custom-Cs137-CY3
Cs-137 CY3
Custom-Cs137-CY13
Cs-137 CY13

Experts in Custom OWL Source Design

When you need a custom design for your bull plug or pressure vessel, QSA Global, Inc.'s technical experts are here to guide you through your unique production needs. For example, we can provide recommendations on superior materials that are better suited for high temperature, high pressure, and corrosive environments.

QSA Global, Inc. also provides technical guidance on capsule dimensions, interface, assembly, and specific handling features and tailors them to your preferences and needs.

OWL Sealed Source FAQs

OWL Sealed Source Integrity Testing

QSA Global, Inc.'s oil well logging sealed radioactive sources are manufactured with superior materials, such as MP35N high-performance alloy for outstanding durability, corrosion resistance, and extremely high tensile strength. We can also manufacture sources capsules from 17-4 PH stainless steel offering magnetic properties along with high strength and corrosion resistance. Our sealed radioactive sources are tested according to ISO 2919/ANSI N43.6 standards. We can perform high-pressure testing up to 60,000 PSI (414 MPa), which is well beyond the class 6 pressure requirement of 24,656 PSI (170 MPa).  We can also perform temperature testing to the maximum class 6 requirement of 800° C for 1 hour.  The following are just a few of the tests we perform:

Puncture Test

ISO 2919 Class 6 Puncture Test: 2.2 lbs (1 kg) from 3.3 ft (1 m) or equivalent imparted energy
Low-temperature test

ISO 2919 low-temperature test with liquid nitrogen (-196°C)
Post low-temperature test

Post low-temperature test with liquid nitrogen
High-Temperature test

ISO 2919 Class 6 High-Temperature test to 800°C for 1 hour
Thermal shock test

ISO 2919 Class 6 Temperature Test: Thermal shock from 800°C to 20°C (in water)
Post thermal shock test

Post ISO 2919 Class 6 thermal shock test

Explore Sealed Sources.

Browse sealed radioactive sources for oil well logging in wireline and MWD/LWD applications.

Talk to a Source Expert.

QSA Global’s technical experts are ready to help you specify the right isotope, capsule dimensions, interfaces, and material selection for high temperature, high pressure, or corrosive oil well logging environments.

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Formerly known as Amersham Corporation and AEA Technology, QSA Global, Inc. is the original equipment manufacturer of Am-241, Am-241/Be, Cf-252, Cs-137, and Co-60 industrial sealed radioactive sources.