Oil and gas production handbook An introduction to oil ... - ABB Group

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8 Utility systems This chapter contains an overview of the various systems that provide utilities or supports for the main process. 8.1 Process control systems A process control system is used to monitor data and control equipment on the plant. Very small installations may use hydraulic or pneumatic control systems, but larger plants with up to 250,000 signals to and from the process require a dedicated distributed control system. The purpose of this system is to read values from a large number of sensors, run programs to monitor the process and control valves, switches etc. to control the process. Values, alarms, reports and other information are also presented to the operator and command inputs accepted. Typical process control system Process control systems consist of the following components: 100
• Field instrumentation: sensors and switches that sense process conditions such as temperature, pressure or flow. These are connected over single and multiple pair electrical cables (hardwired) or communication bus systems called fieldbus. • Control devices, such as actuators for valves, electrical switchgear and drives or indicators are also hardwired or connected over fieldbus. • Controllers execute the control algorithms so that the desired actions can be taken. The controllers also generate events and alarms based on changes of state and alarm conditions, and prepare data for operators and information systems. • A number of servers perform the data processing required for data presentation, historical archiving, alarm processing and engineering changes. • Clients, such as operator stations and engineering stations, are provided for human interfaces to the control system. • The communication can be laid out in many different configurations, often including connections to remote facilities, remote operations support and other similar environments. Figure 31. Function blocks define the control The main function of the control system is to make sure the production, processing and utility systems operate efficiently within design constraints and alarm limits. The control system is typically specified in programs as a combination of logic and control function blocks, such as AND, ADD and PID. For a particular system, a library of standard solutions such as level control loops and motor control blocks are defined. This means that the system can be specified with combinations of typical loop templates, 101
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Håvard Devold Oil and gas producti
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PREFACE This handbook has been comp
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4.1.1 Pipelines and risers ........
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9.1.7 Biofuels ....................
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arrels per day in October, 1861, an
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2 Facilities and processes The oil
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Although there is a wide range of s
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day GOSP. Product is sent from the
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FPSO: Floating Production, Storage
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water depths from 300 up to 3,000 m
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For gas gathering systems, it is co
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2.3.5 Utility systems Utility syste
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for the operation of the pipeline.
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Photo: DOW, Terneusen, Netherlands
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particular crude is merely a measur
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3.1.3 Condensates While the ethane,
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each different parts of the structu
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around 4.5 MPa. During production,
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well from caving in and to help in
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well to add multiple completions to
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Variable flow choke valve. The vari
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motor drives a reciprocating beam,
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The cycle starts with the plunger f
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4 The upstream oil and gas process
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The desired setting for each well a
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Emergency valves (EVs) are sectioni
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The environmental regulations in mo
Page 57 and 58: Heat exchangers of various forms ar
Page 59 and 60: • Reciprocating compressors, whic
Page 61 and 62: Figure 8. Compressor state diagram
Page 63 and 64: 4.4 Oil and gas storage, metering a
Page 65 and 66: Gas metering is less accurate than
Page 67 and 68: 5 Midstream facilities Raw natural
Page 69 and 70: o o Acid gas has a high content of
Page 71 and 72: 5.3.1 Acid gas removal Acid gases s
Page 73 and 74: 5.3.4 Nitrogen rejection Excessive
Page 75 and 76: 5.4 Pipelines Pipeline installation
Page 77 and 78: pressure-reducing turbines (or brak
Page 79 and 80: LNG carriers are used when the tran
Page 81 and 82: Typical LNG train power use is abou
Page 83 and 84: The dual cycle mixed refrigerant (D
Page 85 and 86: 6 Refining Up to the early 1970s, c
Page 87 and 88: 3 and 4 and boiling points -42 °C
Page 89 and 90: Figure 20. Refinery process flow di
Page 91 and 92: Distillate hydrotreater units desul
Page 93 and 94: 2 H 2 S + O 2 → S 2 + 2 H 2 O The
Page 95 and 96: 7 Petrochemical Petrochemicals are
Page 97 and 98: products. Almost all aromatics come
Page 99 and 100: formed into molded products. Nylon
Page 101 and 102: chains with only two, three or four
Page 103 and 104: appliance housings, dishwasher-proo
Page 105 and 106: ubber is a vinyl polymer, and is ve
Page 107: terephthalic acid (PTA) as the pref
Page 111 and 112: • Optimization of various process
Page 113 and 114: to-end safety integrity level. The
Page 115 and 116: PSD and can be handled with less st
Page 117 and 118: P&ID 109
Page 119 and 120: system by means of the available co
Page 121 and 122: • Flowline control to stabilize m
Page 123 and 124: numerical or computed variables are
Page 125 and 126: training facilities are often conne
Page 127 and 128: Therefore use of large variable spe
Page 129 and 130: desalination of seawater though dis
Page 131 and 132: Polyelectrolyte Methanol (MEG) TEG
Page 133 and 134: · Mandatory radio system · Securi
Page 135 and 136: 9 Unconventional and conventional r
Page 137 and 138: eleases bitumen from the oil sand,
Page 139 and 140: after well completion and fracturin
Page 141 and 142: gas - combined. However, research i
Page 143 and 144: 9.1.8 Hydrogen Although not a hydro
Page 145 and 146: and gas, the remainder is coal, pea
Page 147 and 148: The main contribution to sea level
Page 149 and 150: 10 Units Some common units used in
Page 151 and 152: 11 Glossary of terms and acronyms A
Page 153 and 154: MEG MEK MMA MP MPA MPG / USP MSDS M
Page 155 and 156: 12 References Web online sources an
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polybutadiene .....................
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