Borehole problems result in the wastage of huge expenditures in petroleum industry.One of the major challenges is to keep the borehole intact at a particular location and prevent it from falling in reactive shale in h...Borehole problems result in the wastage of huge expenditures in petroleum industry.One of the major challenges is to keep the borehole intact at a particular location and prevent it from falling in reactive shale in high-or low-pressure zones.To convert seismic velocity to pore pressure,the modified Eaton's equation is widely used.A guideline was prepared using both stochastic and non-uniform parameter distributions.Pore pressure and fracture pressure were calculated using a modified version of Eaton's and Mathew and Kelly's methods.To validate the results,geomechanical models were developed based on good correlation.Different regions in the eastern state of India at Tripura were taken into consideration and pore pressure was estimated for the regions of Kathalchari and Ambassa by plotting pressures.The actual pore pressure predicted in Tripura was calculated using seis P and seis P3,the indigenous software which is a modified version of Eaton's method and Mathew and Kelly's method,and the pore pressure from our method matches the calculated Repeat Formation Test(RFT)data from wells.展开更多
文摘Borehole problems result in the wastage of huge expenditures in petroleum industry.One of the major challenges is to keep the borehole intact at a particular location and prevent it from falling in reactive shale in high-or low-pressure zones.To convert seismic velocity to pore pressure,the modified Eaton's equation is widely used.A guideline was prepared using both stochastic and non-uniform parameter distributions.Pore pressure and fracture pressure were calculated using a modified version of Eaton's and Mathew and Kelly's methods.To validate the results,geomechanical models were developed based on good correlation.Different regions in the eastern state of India at Tripura were taken into consideration and pore pressure was estimated for the regions of Kathalchari and Ambassa by plotting pressures.The actual pore pressure predicted in Tripura was calculated using seis P and seis P3,the indigenous software which is a modified version of Eaton's method and Mathew and Kelly's method,and the pore pressure from our method matches the calculated Repeat Formation Test(RFT)data from wells.
