Analysis of The Hydrogeological Conditions Affecting Fault Response To Nearby Hydraulic Fracturing

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

The response of critically stressed dormant faults to fluid perturbation, by oil and gasproduction activities, has been a major public concern because of its link to inducedseismicity (IS). In this paper, we study the hydrogeological factors that affect a nearbyfault response, during and after hydraulic fracturing (HF) operations, evaluated by thechange in Coulomb Failure Stress (CFS) through coupling solid deformation and fluidflow. We take the Duvernay formation in Alberta, Western Canada as a base study casefor our analysis. Our results show that the injection rate and the fault’s distance to HFoperations play an important role in increasing the CFS and hence the probability offault reactivation. When the fault is far from the operations, its damage zones allowlateral diffusion and prevent pore pressure build up in its upper part, which stabilizes it.The lower part, however, will be under a lower normal stress and its failure may betriggered by an increase in shear stress. This is not the case of the close faults where thedamage zones act as conduits for pressure diffusion and the possible triggering failuremechanism will be the increase in pore pressure. Moreover, we show that the width ofthe HF zone does not affect the activation mechanisms or the stability of the fault unlessit is hydraulically connected to its damage zone. Therefore, serious attention should begiven to the fault position, its architecture, and the volume of fluid injected to helpreduce the potential for induced seismicity from HF.

روابط وملفات

التعريف والنوع

رقم الوثيقة

0d5994c7-0714-4f07-a033-802cc72ff28d

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

2206326_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":" Alissar Yehya ","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":" Elsa Maalouf ","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Dima Jamil Yassine ","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

English

المصدر والدورية

اسم المصدر

Analysis of The Hydrogeological Conditions Affecting Fault Response To Nearby Hydraulic Fracturing

المحتوى والصفحات

عدد الصفحات

0

كلمات الباحثين

Show simple item record dc.contributor.advisor Maalouf, Elsa dc.contributor.advisor Yehya, Alissar dc.contributor.author Yassine, Dima dc.date.accessioned 2022-01-15T03:54:48Z dc.date.available 2022-01-15T03:54:48Z dc.date.issued 2022-01-15 dc.date.submitted 2022-01-14 dc.identifier.uri http://hdl.handle.net/10938/23260 dc.description.abstract The response of critically stressed dormant faults to fluid perturbation, by oil and gasproduction activities, has been a major public concern because of its link to inducedseismicity (IS). In this paper, we study the hydrogeological factors that affect a nearbyfault response, during and after hydraulic fracturing (HF) operations, evaluated by thechange in Coulomb Failure Stress (CFS) through coupling solid deformation and fluidflow. We take the Duvernay formation in Alberta, Western Canada as a base study casefor our analysis. Our results show that the injection rate and the fault’s distance to HFoperations play an important role in increasing the CFS and hence the probability offault reactivation. When the fault is far from the operations, its damage zones allowlateral diffusion and prevent pore pressure build up in its upper part, which stabilizes it.The lower part, however, will be under a lower normal stress and its failure may betriggered by an increase in shear stress. This is not the case of the close faults where thedamage zones act as conduits for pressure diffusion and the possible triggering failuremechanism will be the increase in pore pressure. Moreover, we show that the width ofthe HF zone does not affect the activation mechanisms or the stability of the fault unlessit is hydraulically connected to its damage zone. Therefore, serious attention should begiven to the fault position, its architecture, and the volume of fluid injected to helpreduce the potential for induced seismicity from HF. dc.language.iso en dc.subject Coulomb failure stress, induced seismicity, poroelasticity, hydraulic fracturing, pressure diffusion, fault

إشراف وإعداد

الإشراف

Alissar Yehya , Elsa Maalouf

الإعداد

Dima Jamil Yassine

الاقتباسات الببليوغرافية