It all depends on my purpose. Do I need to find new reservoirs? Do I need to predict fluid contact, rock property, pore-pressure? Do I want to map the extend of an already discovered field? However, in all cases I would start with well data and 3D pre-stack depth migrated seismic data. In the earlier stages, I would also add potential field information and EM data. After mapping what could be a potential new reservoir using mainly migrated seismic stack data and logs such as gamma ray and resistivity, I would add pre-stack analysis. Use geophysical logs like density, p and s-sonic to model fluid contents and separate rock types. Perform seismic pre-stack attributes that then are used to invert for fluid and rock types and pore-pressure.

I always prioritize well data when available, as it offers direct measurements of rock and fluid properties from the target depth, ensuring a high level of accuracy. From this data, I can extract detailed insights into geological formations, such as lithology, porosity, permeability, and fluid content. Next, I assess the quality and accuracy of seismic data, both pre-stack and post-stack. By integrating seismic interpretation with geophysical and petrophysical modeling tools, I work toward achieving the best possible interpretation.

-First of all, you should prioritize the data by reliability. What methods were used to obtain this data. Is it direct observation data or is it interpretation data? Chemical-analytical data is direct measurement data. Geophysical and geochemical data is interpretation. As they say jokingly, many wonderful fields were killed by drilling.

What is my data set? Let’s consider log (direct, in situ measurements) versus seismic (which one must understand well, before interpretation, as a seismic line is in a way interpretation, by the hand of seismic processor)? Which of the three is closest to ground truth? Looking at log unit, by unit (in this case: from top-down, lithology, bed by bed), one should be able to sketch out what a synthetic log may look like. Look and see ketch it out. What are contrasting lithologies? Are contacts gradual, or sharp? How thick are the units? What will result in sounds’ acceleration (positive impedance) versus abrupt slowing down (negative) impedance. Can You integrate your date set(s)? Don’t forget the importance of mudlog. Study, see, go back.

Data that is directly acquired/collected like log data , seismic data, Geochemical ,core and surface studies will have more weightage in Exploration and play a vital role in Geological understand and modelling of reservoirs.Existing interpretation data or information from nearby field data will help in more understanding.However, available data (log /seismic)needs to be re-processed and conditioned for the latest advancements time to time.