Changes

Porosity is the space that exist within rocks or materials, meanwhile pearmebility is the capacity of pore material to let fluida flow.When the porosity increase, the pearmeability will also increase, and the production result will increase.

Porosity is the space that exist within rocks or materials, meanwhile pearmebility is the capacity of pore material to let fluida flow.When the porosity increase, the pearmeability will also increase, and the production result will increase.

[[FIG 1]]

[[File:UGM_Vibro_Fig_1.png|thumb|300pxFig 1]]

===Vibroseismic theory and vibration effect===

===Vibroseismic theory and vibration effect===

Vibration system is medium to save potential energy . this system have capability to save kinetic energy (massa or inertia). Vibration system involve ac-dc transfer energy beetwen potential and kinetic shape. In dimmed system some energy will be wrapped in each vibration cycle and must reaplacement from eksternal source, if the stabil vibration is hold. Although single pysic stucture can save kinetic and potential energy and can remove the energy. In translation move, replacement is distance, rotation as an angle move.<ref>Ralph, B., 1998, Basic Vibration Theory: London.</ref>

Vibration system is medium to save potential energy . this system have capability to save kinetic energy (massa or inertia). Vibration system involve ac-dc transfer energy beetwen potential and kinetic shape. In dimmed system some energy will be wrapped in each vibration cycle and must reaplacement from eksternal source, if the stabil vibration is hold. Although single pysic stucture can save kinetic and potential energy and can remove the energy. In translation move, replacement is distance, rotation as an angle move.<ref>Ralph, B., 1998, Basic Vibration Theory: London.</ref>

[[FIG 2]]

[[File:UGM_Vibro_Fig_2.png|thumb|300px|Fig 2]]

In result of study analysts in laboratorium about core syntesis, vibration stimulation can repair the characteristic of rock physic that increase the porocity (φ) until 15.3% and absolute pearmeability (kabs) until 2.2% and decrease saturated oil remain (Sor) until 53.6%. From the result above need to do the reasearch that analysts the effect of vibration frequencyand pressure about porosity (φ), Kabs and Sor in cornfield.<ref name=Ridaliani_et_al>Ridaliani, O., T. Ariadji, and G. Handayani, 2005, Prediksi Perubahan Sifat Fisik</ref>

In result of study analysts in laboratorium about core syntesis, vibration stimulation can repair the characteristic of rock physic that increase the porocity (φ) until 15.3% and absolute pearmeability (kabs) until 2.2% and decrease saturated oil remain (Sor) until 53.6%. From the result above need to do the reasearch that analysts the effect of vibration frequencyand pressure about porosity (φ), Kabs and Sor in cornfield.<ref name=Ridaliani_et_al>Ridaliani, O., T. Ariadji, and G. Handayani, 2005, Prediksi Perubahan Sifat Fisik</ref>