5700 Application Of Acoustic Logging Data In A Block Of Sandstone

5700 array sonic logging measurements have four ways, namely P-wave measurement, single-stage emission measurements, dipole emission measurement, emission measuring cross. Logging can provide a longitudinal wave rock, shear slowness, low-speed layer fast shear and slow shear slowness. Mechanical properties of rock provides a more complete information.Dissertation on a block of sandstone geology, reservoir characteristics and log response characteristics were analyzed in detail, that the sandstone blocks belong to low porosity and low permeability reservoir, in order to obtain higher oil and gas production, this type of reservoirWe need to be fracturing. According to 5700 data array sonic, combining rock physics model, elastic rock were analyzed. Were calculated using log data in different wells, different layers of Poisson’s ratio, Young’s modulus, bulk modulus and rock strength parameters. Poisson’s ratio was low, high Young’s modulus values, indicating good elastic properties of the rocks, fracturing easy to use fast shear and slow shear slowness estimated the formation anisotropy. When the fast shear and slow shear slowness near the time difference reflects the rock is isotropic media; there are differences when speed shear slowness, rock is anisotropic medium, causing cracks because of this difference, resulting in shear-wave splitting. According to the aspect ratio slowness identify gas reservoir, compressional slowness and rock containing gas is related with the increase of gas saturation, compressional slowness increases, compressional slowness and gas-related; shear slowness with gas content increases substantially unchanged. Wave slowness aspect ratio. By calculating and analyzing several wells, the results show that the 5700 array acoustic data calculated elastic modulus of rock and other parameters, can well reflect the physical properties of rocks. Under the same geological conditions, the burst pressure is large, the more difficult to push open, on the contrary, the more easily pressure to open. Prediction of formation fracture pressure, rapid oil and gas wells for safe drilling, completion, stimulation and fracturing oil and gas wells have a very important significance.