... formation fluid composition log often comparing well with pressure volume temperature (PVT) fluid sample analysis. Compared to basic mud gas data, the process involves several correction layers starting from a booster dilution and contamination over to recycled gas correction until the final layer...

... With these characteristic cleanup regimes in mind, conventional OCM is applied by identifying the part of the DFA measurements that follow a constant-exponent power-law model and subsequently fitting the power-law to obtain the endpoint values and the resulting contamination estimate. When using...

... upstream oil & gas drilling fluids and materials contamination formation testing united states government drilling fluid selection and formulation sampling drilling fluid chemistry algorithm fluid sampling artificial intelligence simulation prediction drilling fluid formulation...

... 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...

... 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 pre-salt dolomite...

... 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...

... Upstream Oil & Gas formation tester sensitivity sensor contamination drilling fluid formulation drilling fluid filtrate calibration regression vector carbon dioxide spectroscopy concentration filtrate chemical analysis MOC sensor accuracy interference spectra society of petroleum...

...) and a corresponding wellsite technique to provide compositional interpretation, contamination assessment, reservoir fluid compositional grading, and reservoir compartmentalization assessment. This microscale approach allows fast analysis with a field or near-field deployment of the analytical tool, providing fast...

... injectivity. The solid types tested were silica/quartz, clay, iron oxide, barium sulfate and calcium carbonate, with and without oil contamination. Membrane tests were conducted to understand the correlation between the porosity and the permeability of the external filter cake that forms at the formation face...

...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...

... & Gas Mud contamination liquid channel flow zone contamination well integrity cement evaluation technique log analysis cement evaluation interpretation map well logging Introduction Integrated Cement Evaluation Interpretation An offset well in this Eagle Ford field had experienced...

... 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...

... pressure transient testing formation tester Specialist formation testing proett job planning workflow Tool technology buildup time data analysis gradient Formation Condition operation algorithm Probe mobility contamination Introduction Wireline formation testers (WFT) were...

... Abstract Borehole geometry and casing centralization are major contributing reasons for contamination of cement slurry by drilling mud and spacers during its placement in the annulus of an oil or gas well. This paper investigates the effect of fluid contamination on the mechanical properties...

..., accurate quantification of oil-based mud (OBM) filtrate contamination using data from downhole fluid analysis (DFA) sensors alone remains challenging, especially in difficult sampling environments and for advanced sampling tools which have complex inflow geometries and active guarding of filtrate flows...

... must be in place in order to prevent breaching of a single barrier and ultimately leading to contamination of an aquifer. All wells in the study have been categorized based on their original wellbore designs and subsequent current designs after any remediation work. Further detail on hydrocarbon...

... and strain profiles were measured independently using the DTSS system and thermocouples at various temperatures to quantify the effect of heat release during cement hydration. These independent temperature measurements showed excellent agreement. Contamination of cement due to incomplete displacement...

... filtrate and formation waters. Additional techniques described in this paper are then needed to ensure that the cleanest possible samples are acquired and to estimate WBM filtrate contamination. Abstract In the increasingly complex and challenging environments that oil and gas developments have...

... 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...

... Upstream Oil & Gas GOR contamination level formation testing wireline formation tester spe annual technical conference Probe sample gor station 6 contamination prediction infinite time sample flow rate ratio Modeling & Simulation contamination conventional probe equation...