Earth, Atmosphere & Environment Sciences
Title : | Coupled Reservoir Geomechanical Modelling for gas hydrates reservoir, and oil/gas reservoir in high pressure and high temperature (HPHT) sedimentary basin |
Area of research : | Earth, Atmosphere & Environment Sciences |
Principal Investigator : | Dr. Dip Kumar Singha, Indian Institute Of Technology (IIT) Kharagpur, West Bengal |
Timeline Start Year : | 2023 |
Timeline End Year : | 2026 |
Contact info : | dip28kolkata@gmail.com |
Equipments : | Instruments for measurement of P and S wave velocity of the rock sample |
Details
Executive Summary : | Oil industries suffer several losses financially due to 100% oil not recovered from the reservoirs, immobility of oil, decreases of reservoir pressure, and also rig blowout due to wellbore instability in the offshore high pressure and high temperature (HPHT) region. These problems can be well addressed and reduced financial losses and increased production by doing coupled reservoir geomechanical studies. Recently, India has invested huge fund for gas hydrate exploration and also for technology development for methane gas production. The solid hydrate which is the most abundant in nature is one of greatest economic interest in term of energy resources in recent few decades. Successful test for methane gas production was reported in the Japan’s continental margin in 2013 and in the permafrost region of Alaska in 2012. The deposition of gas hydrate reservoir is massive and it can fulfill India’s energy requirement for next 100 years if 10% of gas hydrate production done. The production of gas hydrate can be viable in near future based on new technology followed by more and accurate geomechanical parameters requirements during drilling and post drilling procedure. These are two cases considered as origin of my project; 1) reservoir simulation and fluid coupled modeling of gemoemchnics in gas hydrate reservoir for sediments compaction, mass instability, sealing caprock modeling and subsurface stress changes when gas hydrate transform into methane gas using depressurization technique in the eastern continental margin of India, and 1) numerical geomechanical modeling for enhanced oil production in depleted reservoir & prevention of wellbore instability in HTHP regions of Indian sedimentary basin. Geomechanical modeling of the proposal deals with (a) prediction of pore pressure, (b) hydrocarbon column height, (c) fault seal potential, (d) mitigation of drilling risk, cashing and mud weight, (e) change in reservoir performance during depletion, and (f) production induced faulting and subsidence. The coupled reservoir geomechanical modeling (CRGM) with changes of porosity, permeability and saturation will lead to understand the historical well failure, production, injection, and subsidence that will further provide a unique, complete picture of the reservoir and overburden behavior. CRGM is accurate estimation of all of the dynamic changes in stresses and rock properties that requires coupled numerical modeling between reservoir simulation (thermal fluid flow) and geomechanical model (changes in stress, strain and dilation). The scientific studies of numerical geomechanical modeling on gas hydrate reservoirs will enable success rate of depressurization technique for future production of methane gas from gas hydrate in eastern offshore basin of India, and this study will help for increase production rate in depleted reservoirs and as well as mitigation of drilling problem in HPHT region of Indian sedimentary basin. |
Total Budget (INR): | 51,19,720 |
Organizations involved