This projects aims to optimize the rate of drilling penetration and maximize bottom-hole assembly component life.
Through a series of side-by-side laboratory and field calibration tests with downhole subs, special algorithms will be developed that allow an instrumented surface sub to process critical drilling parameters to detect and recognize downhole events. The field tests shall be structured to maximize the range of drilling conditions. Drilling depth, hole size and inclination, drilling targets, and a variety of rock strengths shall be varied between the test sites. Data from both subs shall be time tagged and synchronized for post analysis. Numerical analysis and digital filtering will be applied to the surface recorded data for all observed events to determine what can be detected at the surface (i.e., signature of the event) and how it differs (level of attenuation, signal modification) from data recorded on bottom. The data will then be analyzed to determine the feasibility of using surface measurements for drilling optimization and event recognition based on the fidelity of the surface measurements and the uniqueness/ease of detecting the event signature.
Maurer Technologies, Inc.
Anadarko Petroleum Corporation
Houston, Texas 77018-7098
By locating the instrumented sub at the top of the drill string for sensors, the following impacts are expected to result:
Current Status and Remaining Tasks:
The diagnostic prototype surface sub owned by Maurer/Noble was refurbished and upgraded by Sandia National Laboratory.
During Phase II of the project, event recognition software and drilling optimization routines were developed and enhanced and improvements to and proper sizing of the subs based on field tests and lessons learned in Phase 1 were conducted. A series of increasingly more difficult drilling tests were conducted to first define which of these elements have commercial viability and then optimized in terms of performance. Following agreement with DOE/NETL, Phase III was not initiated and a final report was submitted for review and acceptance.
Project Start Date: September 30, 2003
Project End Date: December 31, 2005
DOE Contribution: Phase I - $384,066; Phase II - $388,473
Performer Contribution: Phase I - $121,672; Phase II - $388,473
NETL - William Gwilliam (304-285-4401 or email@example.com)
Maurer Technologies, Inc. - John H. Cohen (281-276-6714 or firstname.lastname@example.org)
"Instrumented Surface Sub" - Power Point Presentation