DOWNHOLE VIBRATION MONITORING & CONTROL SYSTEM

Cobern, Martin E.

APS Technology, Inc. (United States)

关键词: 02 Petroleum;    Feedback;    Monitoring;    Exploratory Wells;    Monitors;   

DOI  :  10.2172/837016
RP-ID  :  NONE
RP-ID  :  FC26-02NT41664
RP-ID  :  837016

美国|英语

来源: UNT Digital Library

【 摘 要 】

The objective of this program is to develop a system to both monitor the vibration of a bottomhole assembly, and to adjust the properties of an active damper in response to these measured vibrations. Phase I of this program, which entailed modeling and design of the necessary subsystems and design, manufacture and test of a full laboratory prototype, was completed on May 31, 2004. The principal objectives of Phase II are: more extensive laboratory testing, including the evaluation of different feedback algorithms for control of the damper; design and manufacture of a field prototype system; and, testing of the field prototype in drilling laboratories and test wells. The redesign and upgrade of the laboratory prototype was completed on schedule and it was assembled during the last period. Testing was begin during the first week of October. Initial results indicated that the dynamic range of the damping was less than predicted and that the maximum damping was also less than required. A number of possible explanations for these results were posited, and test equipment was acquired to evaluate the various hypotheses. Testing was just underway at the end of this period.