Temperature-Stable Polymeric Fluid-Loss Reducer Tolerant to High Electrolyte Contamination
- 1 September 1987
- journal article
- Published by Society of Petroleum Engineers (SPE) in SPE Drilling Engineering
- Vol. 2 (03) , 209-217
- https://doi.org/10.2118/13160-pa
Abstract
Summary: The suitability of a synthetic copolymer for drilling deep, hot wells was demonstrated through laboratory and field testing. The polymer provided fluid-loss control at 400°F [204°C] to clay-free saturated-salt laboratory muds and to low-solids, nondispersed field muds contaminated with drill solids and sodium and calcium salts. High-temperature/high-pressure (HTHP) filtrate was kept at ≤15 cm3/30 min after 400°F [204°C] heat-aging of a 19-lbm/gal [2277-kg/m3] saturated-salt mud. Weighted (>18-lbm/gal [>2157-kg/m3]) potassium muds treated with the polymer showed heat stability and solids and green-cement tolerance. The polymer was successfully field-tested in two offshore wells where bottomhole temperatures (BHT's) reached 400°F [204°C] and salt and calcium chloride flows were encountered.Keywords
This publication has 3 references indexed in Scilit:
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- A New Approach to High Temperature Drilling FieldsPublished by Society of Petroleum Engineers (SPE) ,1976
- The Use of Barium Hydroxide in Drilling MudsTransactions of the AIME, 1956