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Development and application of a new fluid for stopping unwanted flows in and around wellbores

Conference · · Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:5255763
A new shear-thickening fluid (STF) for stopping unwanted flows in and around a wellbore during drilling operations has been developed. This fluid is a pumpable liquid when subjected to the relatively low shear rates inside the drill pipe, but thickens dramatically when sheared through the bit nozzles at a high rate. After shearing through the bit nozzles, the thickened paste can be used to plug a wellbore, or it can be squeezed into either the formation or channels behind casing. This fluid is unique in that it thickens immediately when subjected to high shear rates, and needs no external component to achieve this state. This paper discusses the concept, composition, and properties of this new fluid, as well as the method of applying it. Examples of two types of field applications of the new fluid are included.
Research Organization:
Exxon Production Research Co.
OSTI ID:
5255763
Report Number(s):
CONF-8310121-
Conference Information:
Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE12122
Country of Publication:
United States
Language:
English