Download or read book Gas Lift Valve Failure Mode Analysis and the Design of a Thermally actuated Positive locking Safety Valve written by Eric W. Gilbertson and published by . This book was released on 2010 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas-lifted oil wells are susceptible to failure through malfunction of gas lift valves. This is a growing concern as offshore wells are drilled thousands of meters below the ocean floor in extreme temperature and pressure conditions and repair and monitoring become more difficult. Gas lift valves and oil well systems have been modeled but system failure modes are not well understood. In this thesis a quasi-steady-state fluid-mechanical model and a transient thermal model are constructed to study failure modes and sensitivities of a gas-lifted well system including the reservoir, two-phase flow within the tubing, and gas lift valve geometry. A set of three differential algebraic equations of the system is solved to determine the system state. Gas lift valve, two-phase flow, and reservoir models are validated with well and experimental data. Sensitivity analysis is performed on the model and sensitive parameters are identified. Failure modes of the system and parameter values that lead to failure modes are identified using Monte Carlo simulation. In particular, we find that the failure mode of backflow through the gas lift valve with a leaky check valve is sensitive to small variations in several design parameters. To address the failure modes studied, a positive-locking, thermally-actuated safety valve is designed to shut off flow through the gas lift valve in the event of failure. A prototype of the positive-locking valve is constructed and thermal actuation is tested.

Download or read book Design of an Electronically actuated Gas Lift Safety Valve written by Changkuan Yu (S.M.) and published by . This book was released on 2013 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas lift valves are widely used in oil production fields to pump recycled gas and nitrogen into the production tubing, to sustain production by aerating the oil and lifting it to the ground or sea surface. Today's industry standard, a pressure-actuated valve, is susceptible to various modes of failure, including corrosion and jamming. Safety mechanisms are needed to seal the valve in case of a backflow event, in which oil flows backward through the production tubing. Since human monitoring is difficult to implement at deep level underground, these safety mechanisms have to be highly sensitive and autonomous. This thesis documents the design of an electronically-actuated gas lift safety system that builds on a prior invention based on shape-memory alloy, but, among other features, can handle the slowly changing temperature conditions downhole. The newly-designed control circuit is integrated into the original shape memory alloy (SMA) scheme. The selection criteria and features of various sensors in this circuit are reviewed in relation to oil's physical and chemical characteristics. System functionality is proved through model-scale prototype testing within a controlled environment. At the same time, the system is modeled with heat transfer and structural analysis to predict its behavior in different environments with air or water, or their mixture with oil. Overall, our concept satisfies many of the key operational needs in artificial gas lift.

Download or read book The Safety Relief Valve Handbook written by Marc Hellemans and published by Elsevier. This book was released on 2009-08-31 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Safety Valve Handbook is a professional reference for design, process, instrumentation, plant and maintenance engineers who work with fluid flow and transportation systems in the process industries, which covers the chemical, oil and gas, water, paper and pulp, food and bio products and energy sectors. It meets the need of engineers who have responsibilities for specifying, installing, inspecting or maintaining safety valves and flow control systems. It will also be an important reference for process safety and loss prevention engineers, environmental engineers, and plant and process designers who need to understand the operation of safety valves in a wider equipment or plant design context. - No other publication is dedicated to safety valves or to the extensive codes and standards that govern their installation and use. A single source means users save time in searching for specific information about safety valves - The Safety Valve Handbook contains all of the vital technical and standards information relating to safety valves used in the process industry for positive pressure applications. - Explains technical issues of safety valve operation in detail, including identification of benefits and pitfalls of current valve technologies - Enables informed and creative decision making in the selection and use of safety valves - The Handbook is unique in addressing both US and European codes:- covers all devices subject to the ASME VIII and European PED (pressure equipment directive) codes;- covers the safety valve recommendations of the API (American Petroleum Institute);- covers the safety valve recommendations of the European Normalisation Committees;- covers the latest NACE and ATEX codes;- enables readers to interpret and understand codes in practice - Extensive and detailed illustrations and graphics provide clear guidance and explanation of technical material, in order to help users of a wide range of experience and background (as those in this field tend to have) to understand these devices and their applications - Covers calculating valves for two-phase flow according to the new Omega 9 method and highlights the safety difference between this and the traditional method - Covers selection and new testing method for cryogenic applications (LNG) for which there are currently no codes available and which is a booming industry worldwide - Provides full explanation of the principles of different valve types available on the market, providing a selection guide for safety of the process and economic cost - Extensive glossary and terminology to aid readers' ability to understand documentation, literature, maintenance and operating manuals - Accompanying website provides an online valve selection and codes guide.

Download or read book Completion Component Reliability Failure Mode Identification written by Great Britain. Health and Safety Executive and published by . This book was released on 2001-01-16 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a study undertaken on behalf of the HSE by IDM Engineering Ltd, to determine the credible failure modes and their direct effects as associated with typical single and dual completion gas lift designs as utilized in the UK North Sea. The study has been undertaken with the understanding that both wellhead configurations would be analyzed under normal operating conditions. No consideration was given for any installation, workover or abandonment activities in connection with the wells.

Download or read book NASA Tech Briefs written by and published by . This book was released on 2016-05 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of an Ontology Supporting Failure Analysis of Surface Safety Valves Used in Oil Gas Applications written by Dephna Albor Mejia and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The project describes how to apply Root Cause Analysis (RCA) in the form of a Failure Mode Effect and Criticality Analysis (FMECA) on hydraulically actuated Surface Safety Valves (SSVs) of Xmas trees in oil and gas applications, in order to be able to predict the occurrence of failures and implement preventive measures such as Condition and Performance Monitoring (CPM) to improve the life-span of a valve and decrease maintenance downtime. In the oil and gas industry, valves account for 52% of failures in the system. If these failures happen unexpectedly it can cause a lot of problems. Downtime of the oil well quickly becomes an expensive problem, unscheduled maintenance takes a lot of extra time and the lead-time for replacement parts can be up to 6 months. This is why being able to predict these failures beforehand is something that can bring a lot of benefits to a company. To determine the best course of action to take in order to be able to predict failures, a FMECA report is created. This is an analysis where all possible failures of all components are catalogued and given a Risk Priority Number (RPN), which has three variables: severity, detectability and occurrence. Each of these is given a rating between 0 and 10 and then the variables are multiplied with each other, resulting in the RPN. The components with an RPN above an acceptable risk level are then further investigated to see how to be able to detect them beforehand and how to mitigate the risk that they pose. Applying FMECA to the SSV mean breaking the system down into its components and determining the function, dependency and possible failures. To this end, the SSV is broken up into three sub-systems: the valve, the actuator and the hydraulic system. The hydraulic system is the sub-system of the SSV responsible for containing, transporting and pressurizing of the hydraulic fluid and in turn, the actuator. It also contains all the safety features, such as pressure pilots, and a trip system in case a problem is detected in the oil line. The actuator is, as the name implies, the sub-system which opens and closes the valve. It is made up of a number of parts such as a cylinder, a piston and a spring. These parts are interconnected in a number of ways to allow the actuator to successfully perform its function. The valve is the actual part of the system which interacts with the oil line by opening and closing. Like the actuator, this sub-system is broken down into a number of parts which work together to perform its function. After breaking down and defining each subsystem on a functional level, a model was created using a functional block diagram. Each component also allows for the defining of dependencies and interactions between the different components and a failure diagram for each component. This model integrates the three sub-systems back into one, creating a complete picture of the entire system which can then be used to determine the effects of different failures in components to the rest of the system. With this model completed we created a comprehensive FMECA report and test the different possible CPM solutions to mitigate the largest risks.

Download or read book Recommended Practice for Design Installation Repair and Operation of Subsurface Safety Valve Systems written by American Petroleum Institute. Production Department and published by . This book was released on 1990 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petroleum Abstracts Literature and Patents written by and published by . This book was released on 1985 with total page 1406 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lift of a Safety Valve as Affected by Design written by Antonio Fiorentini and published by . This book was released on 1941 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Unified Model for Gas lift Valve Performance Incorporating Temperature Effects written by Damir Bertovic and published by . This book was released on 1995 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gas lift valve performance written by Sharon Escalante and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flow Performance of One inch Fluid Operated Gas lift Valves written by Octavio L. Cordero Dias and published by . This book was released on 1993 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Improved Dynamic Model of Gas lift Valve Performance written by Rajiv K. Sagar and published by . This book was released on 1991 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flow performance modeling of pressure operated gas lift valves written by Sharon Imelda Escalante Nuñez and published by . This book was released on 1994 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Valve Selection Handbook written by Peter Smith and published by Elsevier. This book was released on 2004-01-24 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Valves are the components in a fluid flow or pressure system that regulate either the flow or the pressure of the fluid. They are used extensively in the process industries, especially petrochemical. Though there are only four basic types of valves, there is an enormous number of different kinds of valves within each category, each one used for a specific purpose. No other book on the market analyzes the use, construction, and selection of valves in such a comprehensive manner. - Covers new environmentally-conscious equipment and practices, the most important hot-button issue in the petrochemical industry today - Details new generations of valves for offshore projects, the oil industry's fastest-growing segment - Includes numerous new products that have never before been written about in the mainstream literature

Download or read book ASME 66 Pet 9 written by Carlos R. Canalizo and published by . This book was released on 1966 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pressure Locking and Thermal Binding of Safety related Power operated Gate Valves written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: