Influence Factors Of Volcanic Rocks In Horizontal Well Logging And Correction Method

Aiming at the key technical difficulties existed in evaluation of deep volcanic reservoir horizontal well logging in SongLiao basin, and the research and development on reservoir logging evaluation technology, researchers study the a series of volcanic reservoir characteristics of the horizontal well logging interpretation techniques. The purpose of the thesis is trying to improve the level of interpretation and evaluation of deep volcanic reservoir horizontal wells in SongLiao basin, and striving to make our processing and interpretation of volcanic horizontal well technology reach the domestic leading level.The project carried out a three-dimensional numerical simulation with the finite element method to study the dual induction logging wells in condition of horizontal wells and the electromagnetic logging measurement well. Besides it also studied and identified logging methods of the dual induction, three-dimensional numerical simulation of electromagnetic,and complied three-dimensional numerical simulation software. Dual induction logging,electromagnetic logging response under the conditions of horizontal wells are effected by the mud resistivity instrument eccentric, eccentric mud invasion and invasion, thick, surrounding rock layers profession and inclination angle and other factors, the paper try to make use of three-dimensional numerical simulation software on various factors to carry out analysis and research in order to make sure that the main effected factors of induction logging and electromagnetic logging are surrounding rock, thickness and layer boundaries.Then I drafted the calibration chart based on these main effected factors: surrounding rock, thickness and layer boundaries. Further deep research was done on the basis of the theory. And through the analysis and correction on borehole compensated sonic logging and the effect of the surrounding rocks, we can get the main effected factor of sonic logging is irregular borehole.Then through the analysis and correction on compensated density logging of Caliper, barite,surrounding rocks, we can get the main factor effect the compensated density logging is adding barite in the mud.The examples give the enough explanation on the sonic and density correction method.Compared with the actual production, we get a better results on the geological interpretation.That is to say the interpretation chart after correction is effective.