Stainless Steel Containers for Laboratory Drilling Mud Test Work
- W.B. Lilienthal (Magnolia Petroleum Co.)
- Document ID
- Society of Petroleum Engineers
- Journal of Petroleum Technology
- Publication Date
- April 1950
- Document Type
- Journal Paper
- 17 - 17
- 1950. Original copyright American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. Copyright has expired.
- 1.11 Drilling Fluids and Materials, 4.3.4 Scale
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A considerable saving in time and money has been effected by use of aspecially designed stainless steel container for laboratory drilling mud testwork. This container involves use of a standard tall-form stainless steelbeaker for service in which the mud sample is heated to an elevated temperatureand maintained there for protracted periods of time, while undergoing agitationto facilitate mixing of mud components. Agitation is accomplished by rotatingthe filled containers on motor-driven rollers within an oven. Several porcelainballs are generally placed in the containers to further improveagitation.
Soft glass containers (Mason jars) were used in this service in early work, andwere found to be unsuitable for the following reasons:
1. Poor resistance to thermal shock.
2. Containers could withstand only relatively low pressures.
3. Accidental breakage in handling.
4. Chemical deterioration and subsequent mud contamination from reaction ofhigh pH muds with the glass at elevated temperatures.
Pyrex containers were also considered, but, inasmuch as they providedimprovement only in items 1 and 4 listed above the additional cost was notbelieved to be justified.
A scale drawing of the container is shown in the figure illustrating details incross-section. A pressed stainless steel lid was fabricated to match the rollededge of the beaker top, and male and female screwed connections external to thecontainer were made up to complete the closure with the O-ring used as a gasketbetween the lid and beaker.
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