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NOVEL COMPOSITE CEMENT FOR IMPROVED WELL INTEGRITY EVALUATION


Speaker: Hani Elshahawi (Shell International E & P)

Date: Wednesday, Jan 23rd, 2019

Venue: MetaRock Laboratories
2703 Highway 6 S, Suite 280A, Houston, TX 77082
Time: 11:30 am – 01:00 pm

Admission: Regular Admission ($15)
Student and In Transition Professionals ($10)
 
Parking Info
Parking lot located in front of the building
 
Please register by Jan 22nd 2019 @ 12 pm to reserve lunch and pre-registration
Contact: Jeff Crawford
Corresponding: Jeffrey.Crawford@halliburton.com281-871-2168


ABSTRACT
 
NOVEL COMPOSITE CEMENT FOR IMPROVED WELL INTEGRITY EVALUATION
Hani Elshahawi and Shan Huang, Shell International Exploration and Production Inc, Jacob Pollock, and Vinod Veedu, Oceanit 
For E&P companies, well integrity during the production cycle is of paramount importance for safeguarding health, safety, and the environment (HSE) and for maintaining the license to operate. In this paper, we describe the development of a composite well cement with specific enhanced acoustic signatures that can be detected by traditional sonic logging tools as well as
next generation ultrasonic tools. This new acoustically responsive cement utilizes specially engineered particle fillers that act as acoustic band gap filters and contrast agents at specific frequencies. The resultant acoustic signature can thus be analyzed to determine the mechanical integrity of the cement as well as the mechanical stress experienced by the cement. 
During the development of this technology, finite element analysis and simulations were used to determine the acoustic response and guide the design of the new cement. The composite cement was produced on the lab scale, and the acoustic band gap features were confirmed using vibrational measurements. Ultrasonic sensors were then used to determine the acoustic response of subscale composite structures, including under mechanical load and in simulated environmental tests. Finally,
shallow buried pipes with cemented annuli and engineered voids were constructed for pilot testing. During that final stage, a slim hole monopole sonic logging tool was used to map the cement location and determine the location and relative degree of mechanical loading. 
Stress was applied using a variety of methods and mapped along the wellbore. The results indicated improved acoustic detection using sonic bond log tools including uniquely identifiable cement placement, enhanced void discrimination, and localization of loaded regions. The acoustically responsive cement allows distinguishing between fluids and lightweight cement, monitoring of formation depletion and reservoir compaction, and increased knowledge of wellbore stresses in the oil field. Furthermore, the material has the potential to be continuously monitored with an acoustic interrogation system for remote real-time indication of cement stress and integrity on a zone-by-zone basis.
 
BIOGRAPHY
 
Hani Elshahawi is Deepwater Digitalization Lead at Shell and the company’s foremost expert on formation testing and sampling. Previously, he was GameChanger and Technology
Advisor-Deepwater, and led FEAST, Shell’s Fluid Evaluation and Sampling Technologies center of excellence. Prior to joining Shell in 2002, Hani spent 15 years at Schlumberger during which he held various positions in operations, consulting, management, marketing, and product development. He holds several patents and has authored over 150 technical papers in petroleum engineering and the geosciences. Hani was the 2009-2010 SPWLA President and distinguished lecturer for the SPE and SPWLA in 2010-2011 and again for the SPWLA in 2013-2014.

 
Total Occupancy : 30
Occupancy Available : 27
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