Production logging tool

Hydrocarbon-water contact movement in the reservoir may be determined from the open hole logs of new wells drilled after the beginning of production, or from a thermal decay time (TDT) log run in an existing cased production well. The TDT is able to differentiate between hydrocarbons and saline water by measuring the thermal decay time of neutrons pulsed into the formation from a source in the tool. By running the TDT tool in the same well at intervals of say one or two years (time lapse TDTs), the rate of movement of the hydrocarbon-water contact can be tracked. This is useful in determining the displacement in the reservoir, as well as the encroachment of an aquifer. 

Many modern scientific tools were applied to Mallik that were not available at the time of Messoyakha. For example, well logs had advanced substantially so that it was possible to determine, for example, the porosity, permeability, and hydrate saturation of the sediments at Mallik, which were not available at Messoyakha. In addition, reservoir models for hydrate production could be based upon well-constrained Mallik 2002 production data, such as pressure stimulation tests over constrained well intervals or thermal stimulation tests. 

Kister says that d/b plots are primarily used when there is a tight spec, on a nonkey component or a concern about the distribution of an intermediate key component. His book shows d/b curves for various feed stage locations on a plot of the mole ratio of a reference component in the distillate to the bottom product, versus the relative volatility of each component to this reference component. This plot is made on log-log paper. The optimum feed produced a curve closest to linear. The d/b plot is suggested as a troubleshooting tool in the subsection of the Troubleshooting section, Fractionation Operating Problems. ... 

As is well known, coil induction probes used in induction logging have various arrangements of coils. It is appropriate to distinguish in every differential probe the basic (main) two-coil probe having a maximal product of transmitter (T) and receiver (R) coil moments. Other coils are considered to be focusing coils and, they form several additional coil probes which provide focusing features of the induction tool. 

Indonesia is a tropical country with about 144 million Ha of tropical forest, producing a large amount of natural polymers, mainly natural rubber and wood products. In 1991 the total production of natural rubber was about 1.36 million tonnes while the production of log was about 40 million. Such large amount and various kinds of natural polymers were subject to investigation by a number of research centers since before the second WW. Center for the Application of Isotopes and Radiation, using radiation technique as a tool to modify the property of various natural polymers in order to meet the industries. Several Cobalt-60 sources and electron beam machine (EBM) from a small scale to a pilot scale are available. Other polymers such as synthetic fibers also becoming a subject of investigation. 

The results confirm that a structural time series model with explanatory and intervention variables is an appropriate tool for explaining the changes in the monthly number of fatalities in Poland for the period 1998-2012, in relation to economic factors such as the industrial production index and/or the unemployment rate. A prehminary graphical analysis was conducted, which confirmed that the correlation between the munber of fatalities and the industrial production index (and the imemployment rate respectively) was positive (and negative respectively) on average. Log-log and log-lin specifications were then tested for accounting for these correlations, and three models which confirm this average relation were finally retained as statistically satisfactory and interpretable. 

The readership of FZ online has, after a peak of activity in 2005, now seemed to have reached a steady state of about 3000 log records per quarter. The vast majority of usage is from the developed world (especially Europe and North America), a level that is an order of magnitude above that of Africa. African stakeholders are not engaging with the project. Why this is so is not clear, perhaps because of a lack of reliable internet cormections, or competition from other initiatives (such as Aluka or the online Flora of Zimbabwe). If it is that problems lie with the online format, then there may be justification for an offline version of the Flora, which could be distributed either by download, on CD-ROM or DVD existing interactive key software could prove a suitable medium for such a product and might also incorporate identification tools such as an Interactive Key To African Plants. ... 

MS2 Bacteriophage and Oocyst Chaiienge Test This test doses high concentrations of microorganisms into the feed and measures the particulate levels in the product. This is basically a research tool and permits the calculation of log removal values for the specific organism (DWI, 2001). 

The hazard log is considered by the UK MoD as one of the most important tools for managing safety. The MoD defines the hazard log as a record of all significant hazards identified, and which acts as a directory for the safety justification by providing a summary of all safety activities throughout the product life cycle. This hazard log provides traceability of how safety issues have been dealt with. Outstanding issues should be regularly reviewed by the project safety panel to make sure that safety-related actions are completed and unacceptable risks are resolved/mitigated. 

The hazard log is not a safety assessment or hazard identification technique, only a management tool that is subservient to the safety management system. In fact, the hazard log can be thought of as an index to the mass of information held in the safety case. As such, the hazard log is a live document, which throughout the hfe of the product/facUity/operation provides an auditable record of the management of hazards. 

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