Identifying and Evaluating Surfactant Additives to Reduce Water Blocks after Hydraulic Fracturing for Low Permeability Reservoirs
| Autor: | Rafael A. Longoria, Tianbo Liang, Sofiane Haythem Achour, David A. DiCarlo, Quoc P. Nguyen |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Hydraulic fracturing
020401 chemical engineering Pulmonary surfactant Petroleum engineering Low permeability Environmental science Geotechnical engineering 02 engineering and technology 0204 chemical engineering 010502 geochemistry & geophysics 01 natural sciences 0105 earth and related environmental sciences |
| Zdroj: | All Days. |
| Popis: | Significant amount of fracturing fluid is lost after hydraulic fracturing, and it is believed that the loss of fluid into the matrix can hinder the hydrocarbon production. One way to reduce this damage is to use the surfactants. Robust surfactant formulations have been developed for chemical enhanced oil recovery (CEOR); similar ideas are introduced in this study to reduce water blocks in low permeability reservoirs. Here we present an experimental investigation based on a coreflood sequence that simulates fluid invasion, flowback, and hydrocarbon production within the rock near the fracture face. Different levels of IFT reductions are tested and compared in order to explore the best condition that maximizes the permeability enhancement. The effect of in-situ microemulsion generation to mobilize the trapped water is also studied. From this work, we recognize the mechanism responsible for the permeability damage in matrix and we suggest criteria to optimize the performance of surfactant additives so as to enhance the hydrocarbon production from low permeability gas/oil reservoirs after hydraulic fracturing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|