The drilling-fluids specialist in the field conducts several tests to determine the properties of the drilling-fluid system and evaluate treatment needs. Although drilling-fluid companies might use some tests that are designed for evaluating a proprietary product, the vast majority of field tests are standardized according to American Petroleum Institute Recommended Practices (API RP) 13B-1[1] and 13B-2,[2] for water-based fluids (WBFs) and oil-based fluids (OBFs), respectively.
The mud engineer’s main responsibility is to monitor the fluid properties of drilling mud during the drilling process . It is important that drilling mud always has desired properties while in the drilling phase to prevent problems while drilling such as kicks, stuck pipe, and lost circulation. To evaluate drilling mud there are several different techniques used in the industry to measure different fluid properties. The main diagnostic tests and their equipment used include Mud balance (mud density), Marsh funnel (fluid consistency), Rotational viscometer (rheology), API filter press (mud filtration), Retort (solids, oil, and water content), Sand screen (sand content).

Mud logging services

Mud logging technicians in an oil field drilling operation determine positions of hydrocarbons with respect to depth, identify downhole lithology, monitor natural gas entering the drilling mud stream, and draw well logs for use by oil company geologist. Rock cuttings circulated to the surface in drilling mud are sampled and analyzed. We are normally contracted by the oil company (or operator). They then organize this information in the form of a graphic log, showing the data charted on a representation of the wellbore. Well-site geologist mudlogging The oil company representative (Company Man or “CoMan”) together with the toolpusher, and well-site geologist (WSG) provides mud loggers for their instruction. We are contracted specifically as to when to start the well-logging activity and what services to provide. We have state of the art equipment for mud logging services to enhance decision making. Mud logging may begin on the first day of drilling, known as the “spud in” date but is more likely at some later time (and depth) determined by the oil industry geologist’s research.