Using of surface back pressure with water based mud in managed pressure drilling technique to solve lost circulation problem in Southern Iraqi Oil Fields


  • Batool Abdullah Dhayea Department of Petroleum, College of Engineering, University of Baghdad, Iraq
  • Faleh. H. M. Almahdawi Department of Petroleum, College of Engineering, University of Baghdad, Iraq
  • Sinan I. M. Al-Shaibani Petroleum Research & Development Center (PRDC).



Managed pressure drilling (MPD), Surface pack pressure, Lost circulation, water based mud, Cutting transport ratio (CTR).


Many drilling problems are encountered continuously while drilling oil wells in the southern Iraqi oil fields. Many of these problems are ineffectively handled resulting in a longer non-productive time. This study aims to identify the formations such as Dammam, and Hartha formations،diagnose potential problems and provide the solution for lost circulation problem. After conducting a comprehensive study on the subject and based on available data, previous studies and some information, the managed pressure drilling (MPD) method was the best technique to solve this problem. This process may use various techniques including control of back pressures .Thus, reducing the risk and control the costs of drilled wells, which have narrow pressure window by managing the wellbore pressure profile.  The well plan software program provided by Halliburton Company was used, this software is based on a database and data structure common to many of Landmark’s drilling applications. Mud used with  various injection rates  to choose the rate that provides the conditions to achieve the best drilling process, as it using mud weights of (8.8 -8.7 ) ppg  and applied a surface back pressure (50 psi). Depending on specifications of second hole the optimal injection rate was chosen using the (hydraulics) program. As a results, rate of water injection (850) gpm, is the best  which it  provides a good efficient cutting transport ratio (CTR), which means high  stability and preventing formation damage in addition to controlling in  mud losses




How to Cite

Dhayea, B. A. .; Almahdawi, F. H. M. .; Al-Shaibani, S. I. M. . Using of Surface Back Pressure With Water Based Mud in Managed Pressure Drilling Technique to Solve Lost Circulation Problem in Southern Iraqi Oil Fields. Journal of Petroleum Research and Studies 2021, 11, 28-47.