I would like to create a comparison of each of Halliburton, Schlumberger, Baker Hughes, and Weatherford qualities of products (drilling equipments i.e. LWD, MWD, directional drilling, cementing, geo-softwares, piping, etc) and services (quality of engineers etc). Could you help me with some insights? For instance, Baker Hughes is very good in drilling speed and HPHT equipments, or Schlumberger is excellent in software solution (Petrel) than others. Your opinions are highly appreciated, thankyou

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