منابع مشابه
Investigating the Effect of Polythin and Polydrill on the Properties of Drilling Fluids
In this study, synthetic sulfonated polymers were used in order to enhance the rheological properties of drilling fluids. The capability of these polymers in reducing the effects of environmentally friendly, but harmful, pollutants such as cement, calcium chloride, gypsum as well as pH changes were investigated. In the present work, two sulfonated synthetic polymers, namely Polythin and Polydri...
متن کاملThe use and management of drilling fluids and cuttings
There are essentially three main categories of drilling fluids: oil based fluids (OBF’s), synthetic based fluids (SBF’s) and water based fluids (WBF’s). OBF’s have been traditionally been used for their high performance drilling characteristics but tend to have a poor environmental performance in terms of their ecotoxicity and their tendency to persist in cuttings piles on the seafloor. More re...
متن کامل6. Routine Exploratory Drilling and Support Operations
Weight on the bit is accomplished by running in the hole, between the bit and the drill pipe, several lengths of extremely heavy thick-walled pipe, called “drill collars”. Drill pipe may weigh up to 30 kg/m. Drill collars, of larger diameter than drill pipe and of constant diameter throughout, can weigh up to IS0 kg/m. The full hanging weight of the whole assembly in the blocks in the derrick (...
متن کاملRheological Characterization of Oil-Based Drilling Fluids – Effect on Barite Sag
Rheology is one of the key drilling fluid properties for controlling sag. Yet, the current understanding of the sag-rheology relationship is limited to a few general guidelines for reducing sag in the field. This paper reviews current understanding of sag and describes the initial stage of work aimed at finding a correlation between fluid rheology and sag performance under laboratory conditions...
متن کاملperformance of partially-hydrolyzed polyacrylamide in water based drilling fluids
fluid properties with constant improvement in efficiency have been noticeable as important criteria in drilling operation. the main drilling fluid properties highly depend on utilization of new polymers with high efficiency in drilling fluid composition. in this paper, the performance of a new polymer, called partially hydrolyzed polyacrylamide polymer (phpa), is studied which has recently ente...
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ژورنال
عنوان ژورنال: Journal of the Japanese Association for Petroleum Technology
سال: 1958
ISSN: 1881-4131,0370-9868
DOI: 10.3720/japt.23.213