High Density Fluids Customization and Field Application in Khursaniyah Challenging Wells
- Ahmed Gadalla (Saudi Aramco) | Rafael Pino (Saudi Aramco) | Peter Ezi (Saudi Aramco) | Nadeer Zayer (Saudi Aramco) | Mohammad Al Hudaithi (Saudi Aramco) | Ajay Addagalla (Baker Hughes) | Balraj Kosandar (Baker Hughes) | Prakash Jadhav (Baker Hughes) | Ishaq Lawal (Baker Hughes) | Aqeel Imran (Baker Hughes) | Omran Hassan (Baker Hughes)
- Document ID
- Society of Petroleum Engineers
- SPE Middle East Oil & Gas Show and Conference, 6-9 March, Manama, Kingdom of Bahrain
- Publication Date
- Document Type
- Conference Paper
- 2017. Society of Petroleum Engineers
- 1.6 Drilling Operations, 1.7.5 Well Control, 5.2 Reservoir Fluid Dynamics, 3 Production and Well Operations, 3 Production and Well Operations, 7.2.1 Risk, Uncertainty and Risk Assessment, 3.2.4 Produced Water Management, 3.2 Well Operations and Optimization, 5.2 Reservoir Fluid Dynamics, 7 Management and Information, 7.2 Risk Management and Decision-Making
- Heavy Mud, Drilling, Fluids
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Drilling high pressure wells in the Khursaniyah field, Saudi Arabia, has become a challenge due to the high pressure flow from Base Jilh Dolomite formations coupled with loss circulation across the depleted Upper Jilh formations in the 8 3/8" section. The variations in formation pressure across these layers have led to issues like well flowing, losses, and stuck pipe causing considerable nonproductive time.
This paper analyzes the historical problems encountered in the offset wells to identify the critical fluids related issues during drilling of this section:
Thermal and pressure stability of fluids additives.
Downhole pressure management.
Differential sticking or induced losses.
Low contamination tolerance to formation fluids influx.
Rheology and free-water management.
This paper also discusses laboratory customization of optimized high-density fluid formulations and field handling guidelines to drill this critical 8 3/8" section and minimize fluid associated risks. The fluid was modeled to have as low a rheology and gelation profile as possible while suspending weight material by understanding the pressure envelope, bore-hole strength, torque, and drag constraints in combination with the fluid rheology and density relationship under the influence of anticipated drilling practices.
The field application on this customized formulation with engineering observance was successful to drill this critical section and the case study for such well is presented in the paper.
|File Size||5 MB||Number of Pages||16|