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Keywords: contamination
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Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210091-MS
... Abstract Samples collected using Wireline Formation Testing (WFT) provide vital information throughout the lifetime of the reservoir. Contaminated samples can lead to erroneous fluid analysis results with potentially huge economic consequences. On the other hand, sampling operations need...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210151-MS
... drilling fluids and materials baritine santos basin carbonate lithology composition upstream oil & gas reservoir characterization limestone calcite structural geology interpretation variation identification silicification de oliveira barra velha fm contamination crossplot...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201408-MS
... Abstract Obtaining representative clean fluid samples in the least amount of rig time is the primary objective for open-hole sampling. The estimation of contamination levels within the pumpout fluid in real time poses major challenges to accomplish this operation, particularly during the early...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195806-MS
... in Fig. 2 . Laboratories can determine the contamination level by the subtraction method, involving the iterative removal of a fraction of the chromatogram of a filtrate sample from the chromatogram of a contaminated sample, until the resultant chromatogram shows only an exponential decline...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195983-MS
... During waterflooding, the injected water will contain a variety of solid particulates, and in certain cases, oil droplets based on the water source and filtration specs used. Based on the size of the particles, some of these contaminants will penetrate the reservoir face and deposit inside...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196222-MS
...Introduction During real time cleanup operations, change in contamination is continuously measured to assess fluid sample quality. This is currently the sole use for contamination data despite the great amount of information collected over several minutes of fluid pumpout. Likewise, post-job...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191483-MS
... placement design cement placement casing and cementing interpretation result centralizer cement slurry lbm gal slurry standoff placement cement evaluation log Upstream Oil & Gas Mud contamination liquid channel flow zone contamination well integrity cement evaluation technique log...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191678-MS
... detection limit groundwater membrane aquifer oil shale concentration setup Linearity shale oil Upstream Oil & Gas low detection limit sensor package sensor complex reservoir relative humidity exploration VOC response time methane humidity toluene methane concentration contamination...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187432-MS
... is desirable over the full duration of cleanup, from 100% filtrate contamination to clean formation fluid. While accuracy in the the low-contamination range (<10%) is important for job planning, capturing the time of formation fluid breakthrough and the progression of cleanup at higher contamination levels...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187040-MS
... planning workflow Tool technology buildup time data analysis gradient Formation Condition operation algorithm Probe mobility contamination Introduction Wireline formation testers (WFT) were commercialized in the late 1950s and drilling formation testers (DFT) were introduced more...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–28, 2016
Paper Number: SPE-181550-MS
... the importance of integration. We will then highlight current capability gaps, focusing on the need for improved real-time contamination monitoring in some environments of interest and our desire to measure additional fluid properties and specific species concentrations. log analysis Upstream Oil...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–28, 2016
Paper Number: SPE-181429-MS
... additional risks due to potential well control incidents. In addition, limitations exist for accurate measurement and interpretation of the standard cement bond log. For example, contamination of the cement layer could lead to erroneous conclusions, such as indicating a bad cement bond even though the cement...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–28, 2016
Paper Number: SPE-181549-MS
... discusses the primary water properties and their impact on field developments. We discuss why it is critical that formation water samples are truly representative of the actual in-situ formation water properties. We then examine the two biggest challenges for formation tester sampling: mud contamination...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 28–30, 2015
Paper Number: SPE-175116-MS
... To reduce the OBM contamination, operators have to pump out fluid from the formation to the borehole before filling the samples at desired OBM contamination level. There is not a standard procedure to determine a sample's contamination level during the pump out. Engineers sometimes rely...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 28–30, 2015
Paper Number: SPE-174941-MS
... Analysis (PTA) is the most commonly used technique to estimate the reservoir properties like permeability and skin. PVT properties serve as critical inputs to the PTA and any error with respect to PVT properties is bound to affect the PTA results. To observe the effect of contamination on Pressure...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 27–29, 2014
Paper Number: SPE-170590-MS
... Abstract This paper provides a reference and guide to distinguish between various treatment technologies for contaminated sites in project management and engineering, technology development manners and in a controlled method. To understand the decision framework for technology selection...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 27–29, 2014
Paper Number: SPE-170667-MS
... 178-mm liner displacement rate 140-mm liner average bi contamination bond index evaluation Introduction Table 1. AVERAGE CEMENT BOND INDEX (BI) CALCULATED OVER DIFFERENT INTERVALS IN WELL 216/178 mm Section Top of Cement = 5787 m Top, MD Bottom,MD Average Bl Bl >85...

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