Experience With Subsea Well Control Systems

1981 ◽  
Author(s):  
Eustace D. Coltharp ◽  
Doyle E. Coffelt
Keyword(s):  
Control Systems ◽  
Well Control

PACT - One Step Closer to Well Control Autonomy

2021 ◽  
Author(s):  
Christian Petersen ◽  
Ola Strand ◽  
Espen Johansen ◽  
Dag Almar Hansen ◽  
Dag Ketil Fredheim ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Control Systems ◽  
Pressure Control ◽  
Modern Technology ◽  
Hydraulic Control ◽  
Hydraulic Systems ◽  
Well Control ◽  
Playing Field ◽  
Actuation System ◽  
And Control

Abstract Pressure control have been going through steps of evolution. In the highlight of safety, reliability and control, the systems have been sturdy withstanding massive pressure and environmental impact to last the time of estimated life of well. Design have been emphasizing on sturdiness rather than intelligence and autonomy. Time moves on, sophistication levels rise in all parts of our industry. Sustainability and lower environmental impact of solutions grow from the young into business planning and democratic policies. Control lines of hydraulic systems posed risks to the environment as well as being costly in structure and maintenance. Condition monitoring helped ensure better maintenance planning and lowered the risk of breakdown, but still left a lot to be desired reaching for self-contained, self learning systems with low installation and maintenance costs, yet the safest approach. The next steps were taken towards electrification and digitization of pressure control systems, making short and undetermined strides over almost two decades. Still, the standards are not following the pace of technological progress. And when someone dares to pilot or demonstrate modern technology applied, the installations and operational procedures of the systems still need expensive distributed lines of power, of signals and control systems to ensure a swift and safe operation. The fly-by-wire principle applied in oil & gas is the operate-by-costly-technology-and-environmental-impact-lines. With the introduction of new and breaking technology in energy harvesting and storage, the playing field opens up towards fully automated systems with no need for expensive power lines or hydraulic control lines. The safety will be taken care of also off-grid, fully digitized. Should cabling of instrument signals be damaged, the system of tomorrow will still be up to par with the Safety Integrity Levels needed. New super-capacitors with an extra dense storage capacity being developed in partnership between the industry and the University of southeast Norway combined with an extremely low energy consuming actuation system with the fastest failsafe mechanism ever will ensure safety in all modes of operation, even with all lines down or consumed by flames. The paper aims to show how the technology works and underline why it will take a place in the future of well control and production.

scholarly journals CASE-BASED REASONINGS AND CONSTRAINTS-BASED SPECIFICATIONS FOR THE DRILLING'S PARAMETERS CONTROL SYSTEMS

2018 ◽  
pp. 77-85
Author(s):  
M. S. Chesanovskyy
Keyword(s):  
Response Time ◽  
Control Systems ◽  
Effective Control ◽  
High Priority Task ◽  
Well Control ◽  
Modification Process ◽  
Priority Task ◽  
Key Factor ◽  
Drilling Rigs ◽  
Case Based

The means of really applicable methodologies of well control are outlined in the form of the interaction of the technological process expert with the means of the adaptation and modification process in order to obtain the necessary knowledge for the use, in fact, correct adaptation in the key substitutions modification form of the initialized parameter’s values. Since the response time for the correction action in the wellbore in the case of emergency is a key factor in the effective control of the well in general, the use of intelligent drilling systems is a high-priority task to prevent possible extraordinary situations on the whole and an important factor in improving quality, efficiency and safety of drilling rigs operations.

The amplitude transition function and the manual and oculomotor control systems.

1988 ◽  
Vol 104 (3) ◽  
pp. 363-372 ◽  
Author(s):  
Nicholas C. Barrett ◽  
Denis J. Glencross
Keyword(s):  
Control Systems ◽  
Transition Function ◽  
Oculomotor Control
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