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## Table B. Joint-Industry Project Participants. 

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## Table C. Tight-Oil Joint-Industry Projects. 

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Figure 9 shows a horizontal well with 29 frac stages. Uniquely differentiable FlowProfiler oil-soluble tracers have been pumped into every frac stage. As the well begins to flow, Core collects and analyzes the oil, looking for all 29 tracers. If all 29 are present, the operator knows all the frac stages are flowing oil. If any tracers are not recovered in the produced oil, the operator knows which of the 29 stages need to be remediated to optimize flow and ultimate hydrocarbon recoveries. 

Because tight-oil reservoirs have ultra-low permeabilities, numerous hydraulic fracture events are required to enable oil to flow to the surface. When these frac stages are too far apart, as shown in Figure 10, crude oil can become stranded between two frac events. To decrease the possibility of that occurring, Core has always recommended more frac stages, spaced closer together to ensure reservoir drainage. Core has also recommended longer horizontal sections to reach more reservoir rock and over- pumping proppant to ensure the longest fracture patterns possible. 

## RESERVOIR MANAGEMENT SERVICES 

Some of the over 100 companies participating in Core Laboratories’ joint-industry projects are listed in Table B. Table C lists Core Lab’s tight-oil joint-industry projects. 

Each participating company must provide several cored intervals from tight-oil reservoirs. From those Core generates the analytical data sets the client companies use to optimize the tight-oil developments in the studies. 

Core Lab anticipates that over eight miles of shale core will be characterized in some of these studies. Data sets and recommendations available from the studies are being used by the partici- pating companies to optimize drilling, completion, and stimulation programs in tight-oil reservoirs throughout North America and the world. 

These projects, coordinated by Core’s Reservoir Management operations, will also utilize data sets and the services and technologies provided by the Company’s Reservoir Description and Production Enhancement segments. Reservoir Description field operations will provide handling, preparation, and preservation of shale cores and reservoir fluid samples at the well site and will transport them to the laboratory. 

