... amount of filtration loss, high pumping pressure, high fracturing pressure, high reservoir temperature and large probabilities of sand plugging for hydraulic fracturing of this reservoir are analyzed. Following technologies have been mainly applied in the field. Near wellbore contamination is analyzed...

... Abstract Monitored natural attenuation (MNA) is rapidly being incorporated into contaminated site management plans. The underlying premise behind MNA is that contaminant mass or concentrations are reduced by naturally occurring processes, and the contaminant behaviour is sufficiently well...

... Abstract Groundwater and soil VOC contamination is a common phenomenon in areas where petroleum refineries are situated. In order to eliminate such problems, several bioremediation techniques have been developed and tested. Air sparging, which is one of the most promising remediation methods...

... of the refinery of this study, extended pollution of groundwater has been observed during the past 15 years. PAH, BTEX and other Non-Aqueous Phase Liquids (LNAPL) are the prime source of soil and groundwater contamination, which has been identified and remains on the surface of the local aquifer, as a free phase...

... circulation upstream oil & gas contamination casing and cementing PETROLEUM SOCIETY CANADIAN INSTITUTE OF MINING, METALLURGY & PETROLEUM PAPER 2004-297 Surface Casing Vent Flow Repair A Process T.L. WATSON T.L. Watson & Associates Inc. This paper is to be presented at the Petroleum Society s 5th...

.... The Bio-Competitive Exclusion (BCX) technology has successfully demonstrated through field projects, partially funded by the U. S. Department of Energy, significant tertiary oil recovery and total control of sulfide (H 2 S) contaminated systems. This fully developed technology presents a new understanding...

... into the formation so that contamination with H 2 S will be avoided. However, when treatments are being performed underbalanced or when iron sulfide scales are being dissolved the coiled tubing and the metal tubulars will be exposed to contamination by H 2 S. Another occasion of concern is during the recovery...

... in-situ. When early-time samples are taken, the oil is contaminated with the drilling fluid. This is a near-wellbore and early-time problem that is self-correcting as more fluids are produced from the well. However, for small volume samples (typically bottom hole samples), contamination can seriously...

... of contamination of soil by a light hydrocarbon, and also the subsequent remediation of the contamination using water and air displacement. Some insight into what sort of data acquisition program is required to model the likely contaminant plume is provided. A better understanding of the process of contamination...