Drilling & Measurements Abdulaziz Alhumaid, Hani Baatiyyah, Maytham Alhaddad, & Mohammed Alhakeem

Outline Purpose Drilling&Measurment Equipment Drilling&Measument Services Measurment While Drilling (MWD) Logging While Drilling (LWD) Directional Drilling (DD) Data Transmission

The purpose of the segment Life cycle of a well Provide client with three main services : 1- Measurements while drilling. 2-Logging while drilling. 3-Directional drilling In MWD : To measure formation properties (E.g. resistivity and gamma ray) In LWD : Acquisition of petrophysical data In DD : Controlling the direction and deviation of wellbore to predetermined underground target or location Life cycle of a well The services are usually provided during the drilling Will be continued (Read from : http://www.slb.com/services/drilling/mwd_lwd/mwd.aspx ) MWD: to provide continuous direction and inclination to guide geosteering and provide data for survey management and development planning LWD: to describe the systems and techniques for gathering downhole data while drilling a well DD: Directional drilling has helped by greatly reducing the costs and environmental impact when drilling from multiple wells from single location.

D&M Equipments D&M includes four main components: Power system Turbine power Battery power Sensors Gamma ray Transmitter Surface Equipment Standpipe pressure transducer Electronic filtering device Computer Rig-floor display MWD: http://directionaldrilling.blogspot.com/2011/07/21-measurement-while-drilling-mwd-and.html LWD: http://iodp.ldeo.columbia.edu/TOOLS_LABS/tools.html

D&M Services Measurement While Drilling ( MWD ) Determine the Wellbore’s Direction and Inclination Transmit Downhole Data to the surface Rotational Speed (Smoothness) Mud Flow Volume Downhole Temperature Provide Gamma Ray and Drilling Mechanic Measurements Can Provide Power for LWD Tools The term MWD refers to directional-drilling measurements, for decision support for the smooth operation of the drilling, while LWD refers to measurements concerning the geological formation made while drilling. LWD and MWD services deliver high quality data to enable time-critical decision for accurate directional drilling.

D&M Services Logging While Drilling ( LWD ) Measure Petrophysical Properties Gamma Ray Density Porosity Directional Drilling Control the Direction and Deviation of wellbore

Data Transmission Techniques Data can be transmitted from MWD and LWD tools using: Mud-Pulse Telemetry Positive Pulse Negative Pulse Continuous Wave Electromagnetic Telemetry Wired Drill Pipe Acoustic Waves

Questions? References: http://www.slb.com/services/drilling/mwd_lwd/mwd.aspx https://en.wikipedia.org/wiki/Measurement_while_drilling http://petrowiki.org/Directional_drilling