Unconventional Resources

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...

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...

Case Study: Illusion® Frac Plug Helps Eliminate High-Risk Millout Operations

Operator removes risk of intervening in a depleted wellbore when milling out composite plugs CHALLENGE – For upcoming high-density well-spacing trials, the operator primarily wanted to remove the risk of intervening in the depleted wellbore when milling out composite frac plugs. Those risks, unmitigated, can put higher-density drilling programs at risk due to the steep costs and time delays created when millout challenges...

Using High-Angle LWD Data in Carbonates

LWD solutions are a cost-effective means of evaluating carbonate reservoirs Carbonate reservoirs often show a high degree of geological and petrophysical heterogeneity. The variations stem from differences in localized depositional environment and diagenesis, ultimately dictating the poro-perm, wettability and overall hydrodynamic behavior of the reservoir at field scale. Secondary porosity and fractures are often the objective target when designing well plans, since their...

Tech Paper: Eagle Ford Horizontal Drilling Optimization in Karnes and DeWitt Counties

Optimized drilling methods lead to increased success rate and reductions in rig time The drilling of Eagle Ford horizontal wells in Karnes and DeWitt counties traditionally requires at least two bottomhole assembly (BHA) configurations to drill from surface casing to reach total depth (TD). After a few initial successful attempts at drilling from surface casing to TD using a single BHA (one-run), several...

Is it Shale or not Shale? That is the Question.

In a previous blog on unconventionals, ”Conventional vs. Unconventional Shale: What is my Reservoir?,” Richard Day wrote about the nontrivial problem of classifying reservoirs as conventional or unconventional formations. I would like to continue this topic, as, in Europe, this issue has made it into the headlines of local newspapers. People in small villages have become “experts” in the field of geology, and...

All Perforations Should Be Treated the Same

Good formation access is the key to expanding stimulated reservoir volume and increasing production from hydraulic fractured, unconventional wells. In Europe, using long perforated intervals for these treatments in tight-gas operations in wells has led to perforation “screenouts.” Higher fluid viscosities in combination with larger pad volumes were often used to avoid these screenouts, as they were thought to be related to the...

Tech Paper: Successful Application of Plug and Hydrajetting Technique during Multistage Fracture for Horizontal Wells with Coiled Tubing

Reducing NPT up to 30%, this Coiled Tubing method allows for continuous completion of fracturing stages This paper presents an alternative for operators regarding tools and methods using coiled tubing (CT) during the implementation of horizontal completions. To help address challenges faced developing horizontal completions, both cemented liners and open holes have been widely used in conventional and unconventional reservoirs. Various completion techniques have...

Tech Paper: Successful Utilization of E-line Tractor in Horizontal, High Pressure and High Temperature Gas Wells

This state-of-the-art technology helps meet the technical objectives of large rigless production enhancement Growing gas resource exploitation in Saudi Arabia has increased activity in drilling deep, high pressure gas reservoirs with marginal to low permeability. Such wells generally require stimulation operations to induce production. To increase the reservoir contact area, a significant number of wells are constructed with long reach horizontal sections. Multistage fracture...

Subscribe

Sign up to receive each new post via email.



Delivered by FeedBurner

Recent Posts

Archives