... was used to predict pore pressure with logging data, and thus provides input data for FEM analysis. Numerical results of sub-salt wellbore stability analysis were presented for the Viosca Knoll field in the deepwaters of the Gulf of Mexico. To obtain accurate stress field information around the salt...

... where the reservoir compaction is often too significant to be manageable. The application of the developed critical pore strain in relation to bulk compressibility and PVC along with the variation of pore pressure and in-situ stress under the uniaxial strain testing conditions is illustrated in a simple...

... formation pressure upstream oil & gas pressure gradient program design overburden pressure gradient exploration well casing and cementing artificial intelligence probability credibility mud density pore pressure machine learning upper limit drilling circulation point selection lower...

... characterization pore pressure spe 130717 strength upstream oil & gas software overburden gradient deformation Introduction The Tambaredjo and Tambaredjo NW fields are located in the Guyana basin along the northern margin of South America between the Amazon and Orinoco deltas, and immediately...

... Abstract Presented in this paper is a case study in South China Sea on formation pore pressure prediction ahead of bit by using a look-ahead vertical seismic profile (VSP). At the intermediate total depth (TD) of 2930m of the study well, wireline logs and VSP data were acquired, and VSP...

... Abstract In pore pressure estimation, Bowers’ velocity effective-stress method has always been a kind of computing model can not be ignored, use it to estimate pore pressure with high accuracy. Bowers pointed out that rock properties change or overpressure could cause velocity reversal data...

... reservoir pore pressure reservoir characterization borehole water content hydration mudstone equation drilling fluid stability artificial intelligence instability gas drilling stress distribution collapse density wellbore stability drilling strength wellbore design coefficient...

... transition time pore pressure upstream oil & gas migration Introduction Annular gas flow after cementing has been a problem in the industry for many years. The oil industry has paid much attention to gas well zonal isolation problems and there is an extensive literature on the subject. Rae...

... recoverable reserves and production rates. bohai bay pore pressure filtration loss upstream oil & gas oilfield reservoir protection drilling fluids and materials operation protection high permeability adjustment well drilling fluid management & disposal fluid system platform...

..., earth stresses, pore pressure and stress direction. After construction, this model can be used to identify geomechanical problems and to consider those problems for planning future wells. The construction of MEM and using it to study wellbore stability forecast in this work has been carried out...

... drilling window is demonstrated in an ERD drilling scenario. The modeled failure envelope is first examined using conventional elastic modeling. Poroelastic modeling is then used to show the effect of changes in the safe drilling window resulting from changes in pore pressure. As a further step, changes...

... on a drillstring can have destabilizing effects on a wellbore through a section with shale that has been exposed to very close to collapse conditions, calling for optimized drilling procedures in situ. borehole wall hollow cylinder test pore pressure reduction laboratory rpm caliper mpa wellbore...

... wellbore integrity elastic parameter wellbore design uniaxial compressive strength wave velocity mud weight window artificial intelligence spe 132204 asmari formation correlation pore pressure reservoir geomechanics compressive strength strength upstream oil & gas drilling machine...

..., especially in environments like Bohai Bay. real time system drilling measurement logging while drilling well logging drilling data acquisition LWD drawdown unconsolidated formation formation pressure testing log analysis Upstream Oil & Gas pore pressure operation accuracy formation...

... Abstract A multistage approach on pore pressure prediction was successfully used for a drilling program in the South China Sea. The objectives were to optimize the casing-shoe position by predicting the overpressure profile in the formation and to select the optimal mud weight by forecasting...

... to the effective compaction force that expelled water from the shale. The effective compaction force is the difference between the total overburden stress and the pore pressure, which can be expressed as (1) σ v ′ = σ v − P p where σ v , σ v ’ , P p are total overburden...

... underbalanced and overbalanced conditions. The bottom hole pressure varies from 3.5MPa to 20.7MPa while pore pressure is controlled separately, varying from 0MPa to 24.2MPa. During these tests, Rate of Penetration is recorded continuously from one pressure condition to another. Cuttings are then screened...

... algorithms and methodology which enable interpreters to estimate, analyze, and visualize geopressure in 3-D. Potential benefits include: (1) more accurate pre-drill pore pressure prediction; (2) 3-D definition of pressure compartments; (3) enhanced interpretation of fault seal or leak from pore pressure...

... gradient, and pore pressure are nearly equal under the high pressure and high temperature conditions. Consequently, the safe drilling window is significantly narrowed. RMA takes into account the thermal effect and pressure effect, providing the drilling engineer with proper mud weight guidance. rock...

... Abstract One of the challenges in drilling wells in South China Sea, Peoples Republic of China (PRC), is the high-temperature/ high-pressure (HTHP) environment. In HTHP, the range of safe mud-densities fall within a very narrow window between the pore pressure and formation breakdown. Planning...