Mud logging involves collecting and analyzing drill cuttings and mud properties to interpret lithology and detect hydrocarbon shows. It relies on mud circulation from the mud pump through the drill string and annulus to the shale shaker where cuttings are examined. The mud logger monitors and records drilling parameters and cuttings data to help assess the producibility of formations. However, mud logging becomes less accurate at depths over 3000m where cuttings are mixed and it takes longer for mud to return to the surface.

2. Topic Of Presentation….
Mud Logging

3. What I Am Going To Discuss…………?
 Components
 Principle
 Uses
 Units
 Limitations

4. Major Components Of Mud Logging Unit….
1. Mud Pump
3. Standpipe
5. Drill string
7. Return Line
9. Desander
11. Degasser
2. Pump Manifold
4. Swivel
6. Annulus
8. Shale Shaker
10. Desilter
12. Mud Pit

5. Principle……
 Mud logging is a service that qualitatively and quantitatively
obtains data from, and makes observations of, drilled rocks,
drilling fluids and drilling parameters in order to formulate
and display concepts of the optional, in situ characteristics of
formations rocks with the primary goal of delineating
hydrocarbon “shows” worthy of testing.
 The mud logging unit is the information center on the rig site
to serve both exploration and drilling.

7.  Mud logging totally depends upon the mud circulation principle in well
which is going to drill.
 Mud pumped by the mud pump via drill string into the bottom of the
hole at a specific pressure and this pressure turn the mud fluid back
through the annular into the shale shaker.
 From the shale shaker, cuttings from the well collected to examine them.
 Shale shaker again connected to the mud pit.
 As during this circulation process, properties of the out coming mud
change. To overcome this change a mud logger or chemical engineer
makes the properties of the mud same as the formation by mixing
something according to the requirements.

9. Objectives:
 Collecting drill cuttings.
 Describing the cuttings (type of minerals present).
 Interpreting the described cuttings (lithology).
 Estimating properties such as porosity and permeability of the drilled formation.
 Maintaining and monitoring drilling-related and safety-related sensing
equipment.
 Estimating the pore pressure of the drilled formation.
 Collecting, monitoring, and evaluating hydrocarbons released from the drilled
formations.
 Assessing the producibility of hydrocarbon-bearing formations.
 Maintaining a record of drilling parameters.

10. Units:
 Feet per minute

11. Limitation:
 At 3000m depth mud logging is not suitable because cuttings are mixed
together by which exact information are not tackled
 At great depth returning mud takes much time to reach to the surface so it
becomes time consuming
 Cuttings are mixed at greater depth
 Pit fall may occur at greater depth where the strata is loose or sandy

12. THANKS TO ALL OF YOU