Unconventional Resources

Tech Paper: Modeling Flow Profiles Using Production Log Temperature Data in Single and Multiphase Wells

Real-time multiphase flow monitoring proves valuable This paper presents the application of a method to determine a generalized wellbore-flow profile using predominantly fluid temperature data obtained through a platinum-resistance thermometer (PRT) tool. The method is advantageous, enabling the calculation of multiphase rates independently of spinner data, and it is based almost solely on temperature measurements, which are reliable and available with every production-logging string. The method...

Case Study: Illusion® Frac Plug Helps Operator Save $200,000

All 15 plugs dissolved, removing the need for coiled tubing millout CHALLENGE – In an ongoing effort to reduce the risks and costs incurred when completing a well using the plug-and-perforate method, the operator was primarily looking for ways to remove the need for milling out composite plugs. As an added challenge, the customer’s objective was to maintain the same parameters during the pump down and...

A Results-Driven Approach to Unconventionals

Understanding desired objectives and environmental changes in order to maximize production and reduce costs A frequent call to action in today’s oilfield environment is to do whatever we can to reduce costs and to improve the efficiency of the work. Understanding our own deliverables and costs allows us to identify areas for reducing costs and improving the value of the work we deliver. The unconventional market...

Tech Paper: Enhance Production by Infinite Conductivity Technique Applied in Tight Formations

Pulsed proppant fracturing process helps provide enhanced and sustained production over conventional treatments The infinite conductivity theory to enhance production was introduced to the industry around 1971. Exploration from the 1970s to the 1990s focused on high permeability formations. The unconventional reservoirs and tight formations were left behind until new technology could enable hydrocarbons to be produced in economical manner. Operators seek methods to both increase...

Case Study: Record-Setting Lateral Completion Achieved with Obsidian® Plugs

Halliburton and Eclipse Resources set 124 frac plugs averaging 5.3 frac stages per day CHALLENGE – Setting and drilling out 100 + frac plugs in an extended-reach 18,544 ft lateral is no easy feat, so finding a reliable, field-proven completion solution was key. Eclipse Resources considered running a sleeve system for the extended lateral; however, Obsidian® plugs proved to be a more economical option, and past...

Tech Paper: First Integrated Petrophysical Characterization in Limestone in Ecuador: M1 and M2 Limestones, Puma Field

Dual porosity characterization method helps access potential carbonate reservoirs The first integrated characterization of limestone in Ecuador was performed in the M1 and M2 limestones in the Puma field of the Oriente basin. The characterization was performed by using available information from open hole logs and by applying the dual porosity methodology, which requires the use of porosity curves, including density, neutron, and sonic. The method...

Holistic Management of Heavy Oil Field Development in Sensitive Environments

Extend the lifespan of a reservoir through heavy oil development while reducing environmental impact The exploitation of heavy oil faces two crucial challenges: reducing the cost of production per barrel; and increasing the recovery factor to extend the productive life of the reservoir. Both of these must be tackled while working to leave no environmental footprint. Technological developments have played a fundamental role in increasing well production in areas...

Case Study: RapidStage® system with AccessFrac® service shines in the Bakken

A minimum of 30% sustained production improvement in over 20 jobs performed CHALLENGE – Operators in the Bakken and Three Forks formations seek to increase compartmentalization in their wellbores by adding more isolated fracturing stages. The goal – access more productive reserves thereby improving well economics with the goal of lowering cost per BOE. At the same time, these operators strive to minimize completion time in...

Tech Paper: Efficient Use of Data Analytics in Optimization of Hydraulic Fracturing in Unconventional Reservoirs

Understanding reservoir parameters can help successfully optimize fracturing treatments per well Hydraulic fracturing operations affect reservoir flow dynamics and increase production in unconventional tight reservoirs. The control of fracture growth and geometry presents challenges in formations in which the boundary lithologies are not highly stressed in comparison to the pay zone, thus failing to prevent the upward migration of fractures. Several factors influence the growth and...

Case Study: RapidStage® ME Frac Sleeve Systems Help Seneca Increase Efficiency in Extended Reach Laterals

Multi-Entry Completion System Reduces Completion Cycle Time CHALLENGE – Seneca needed to complete an extended reach lateral (ERL) well with an efficient, cost-effective, low risk solution. In ERL wells, all operations and their risks are amplified due to the intense nature of the well’s conditions. Extreme measured depths lead to higher risk coiled tubing operations and extended run times for both coil and wireline units. This...

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