Viscometer sag test shoe

Details Viscometer sag test shoe Viscometer sag test shoe

2005-08-23

2005-08-23

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

C073S054280, C073S054370, C073S152620, C210S711000

Reexamination Certificate

active

06931916

ABSTRACT:
Methods and apparatus for measuring sag properties of a drilling fluid using a rotary viscometer. An insert, or shoe, is placed at the bottom of the heat cup containing the fluid to be tested. A rotating cylinder is disposed within the fluid and solid particles are allowed to settle toward the bottom of the heat cup. The shoe incorporates a curved and inclined upper surface that directs the settled particles toward a well non-centrally located in the shoe. As the test is performed, fluid samples can be withdrawn from the well and analyzed. The samples can then be returned to the well and the test continued. The insert concentrates the settled solids into a single location, which increases the sensitivity of the test and provides a location for sample acquisition that is easily and repeatedly located, which allows for improved correlation with laboratory and flow loop results.

REFERENCES:
patent: 4076620 (1978-02-01), Opferkuch et al.
patent: 6330826 (2001-12-01), Meeten
patent: 6584833 (2003-07-01), Jamison et al.
D. T. Jefferson;New Procedure Helps Monitor Sag in the Field; The American Society of Mechanical Engineers; Jan. 20-24, 1991; (pp. 1-7).
SPE 20423; P. M. Hanson, et al;Investigation of Barite “Sag” In Weighted Drilling Fluids in Highly Deviated Wells; Sep. 22-26-1990; (pp. 223-230).
SPE 36670; P. A. Berm, et al;The Influence of Drilling Variables on Barite Sag; Oct. 6-9 1996; (pp. 1-8).
IADC/SPE 47784; P. A. Berm, et al;Barite Sag: Measurement, Modelling and Management; Sep. 7-9 1998; (pp. 89-97).
Barite Sag; Chapter 20A;M=I Viscometer Sag Test(VST); Dated Mar. 31, 1998; (pp. 20A.6-20A-11).
Mario Zamora, et al;Controlling Barite Sag Can Reduce Drilling Problems; Oil & Gas Journal; Feb. 14, 1994 OGJ Special; (pp. 47-52).

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