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New Acoustic Acquisition and Processing Method Assist In Delineating Structure in an Exploration Play in the Gulf of Mexico


New Acoustic Acquisition and Processing Method Assist In Delineating Structure in an Exploration Play in the Gulf of Mexico
 
Speaker: Doug Patterson, Baker Hughes
Date: Wednesday November 2nd , 2016
Time: Presentation starts at 12:00 pm. The meeting room will be open at 11:00 am.
Cost: Free, lunch is not provided, bring your own or purchase nearby. There is a small café on the first floor of the building and a kitchen area with vending machine near the meeting room.
Address: Weatherford Northside facility, 15710 JOHN F KENNEDY BLVD  Houston, TX, 77032
Parking: Visitor parking is available on the first floor of the parking garage. If the first floor is full, park on the 2nd floor and above. Please take note of your license plate number if you use the garage.
Sign-in process: When you enter the building on the first floor, sign in at the security desk with your name and license plate number. Take the elevator to the meeting room on the 7th floor. Follow the signage.

Online Registration is required. Capacity: 50

Abstract:

Understanding structural traps surrounding salt domes can be difficult where the surface seismic does not have sufficient penetration ability or resolution. The use of borehole acoustic data with its higher frequency, coupled with its source and receiver configuration, provides the potential to help resolve some of this ambiguity. Recently, an improved borehole acoustic acquisition sequence provided the ability to see much deeper into the formation in a deviated well. This improved detection was achieved by utilizing all the information captured in the waveform in addition to the standard guided acoustic modes. The combination of this sequence with new processing methods produced a new directional capability to obtain key structural parameters for the exploration and development of an offshore resource in the Gulf of Mexico.
This technology was developed to understand the well position in relation to structure in poorly consolidated sediments where the surface seismic resolution is compromised. Although the acoustic data were acquired in unconsolidated formations, the method enabled evaluation more than 100 feet from the wellbore imaging beds and faults, resulting in refinement of the reservoir architecture and potential connectivity.
This presentation includes a case history that shows an integrated validation of the structural elements at the borehole wall with standard borehole images and induction resistivity-derived dips as well as the extension into the surrounding rock using acoustic body waves generated in the formation by a dipole acoustic source. It is well known that the dipole source generates a borehole-guided flexural mode that is utilized for borehole acoustic shear measurements. In addition to the borehole guided mode, the dipole source also creates acoustic compressional and shear body waves that radiate from the borehole into the formation. Given the correct geometry, these body waves can be reflected back to the borehole, enabling structures and features to be imaged. By utilizing the azimuthal sensitivity of the dipole, the strike of the structure can be determined and further refined by the integration of additional information.
Biography:
Doug Patterson is the Acoustic Research Director and a Senior Technical Advisor for Baker Hughes, where he focuses on development of wireline and LWD devices along with interpretation software. Doug received his BSME from Memphis University, graduating magna cum laude. Over his career he has held positions in operations, sales, technical marketing, and technology development. Since 1992 Doug has focused extensively on the development of downhole acoustic equipment, processing software, and interpretation methods. His current efforts include the use of EMATs for cement evaluation along with deep shear wave imaging to image structures away from the borehole.  He has authored or co-authored more than 55 papers and 25 patents. He is a member of the SPE, SPWLA, ASME, Tau Beta Pi and was an SPWLA Distinguished Speaker for 2011and 2015. 
 
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