ELMAR pressure control presentation.pptx

• 1. ELMAR PRESSURE CONTROL 1 Prepared by: Heidar Yari Mazyar Izad panah
• 2. A TYPICAL STRING OF WIRELINE PRESSURE CONTROL EQUIPMENT 2
• 3. EQUIPMENT WIRELlNE VALVES The Wireline Valve (commonly called wireline "BOP") is designed to control well pressure by sealing around the cable and is used primarily when a cable must be repaired under pressure, or when you are unable to regain control of seal at the grease injection head 3
• 4. EQUIPMENT TWIN RAM WIRELlNE VALVE The dual ram (Figure below) is composed of two hydraulically operated rams mounted one above the other. The lower ram is inverted when operating with braided lines. A grease injection port is located between the two rams where grease can be injected under pressure to achieve a seal. 4
• 5. EQUIPMENT Dual Elmar Compact Wireline Valve 5
• 6. EQUIPMENT WIRELlNE VALVE MAINTENANC Level 1 Service -To be carried out after every job 1. Wash down. 2. Initial inspection &#; remove rams and cylinders - inspect all seal sand sealing surfaces - remove valve sand inspect. 3. Grease up and rebuild. 4. Function and pressure test at working pressure. 5. Check lifting gear and record last certification type and date. 6
• 7. EQUIPMENT WIRELlNE VALVE MAINTENANC Level 2 Service -To be carried out once a year 1. Carry out Level 1 service procedure. 2. Replace all &#;O' rings, inspecting all components and sealing surfaces for corrosion or damage along the way. Pay particular attention to the surfaces below the rams. 3. Rebuild Wireline Valve and pressure test to Test Pressure. 4. Function test at Working Pressure 7
• 8. EQUIPMENT WIRELlNE VALVE MAINTENANC Level 3 Service - Tobe carried out every 5 years 1. Carry out Levels 1 and 2 service procedure. 2. Strip Wireline Valve to component parts discarding all &#;O' rings/back-up rings. 3. MPI (Magnetic Particle Inspection) of all parts. 4. Rebuild using seal kit and any necessary new parts. 5. Rebuild Wireline Valve and pressure test to Test Pressure. 6. Function test at Working Pressure 8
• 9. EQUIPMENT WIRELlNE VALVE TRANSPORTATION The Wireline Valve should be enclosed in a protective cage during use and transportation and stored in the transport frame when not in use (Figure below). The frame is also used for lifting the valve, and provides a work platform. 9
• 10. EQUIPMENT LUBRICATORS The lubricators (also known as risers) are simply a series of inter- connected lengths of pipe, the purpose of which is to provide a space for the tool to be contained in under pressure, when opening and closing the wellhead. 10
• 11. EQUIPMENT TOOLTRAPS Hydraulic tool traps are available in all the common pressure ratings, and for H2S or standard service. The flappers (sometimes called "stop dogs" or "retainer plates") have a slot larger than the wireline, but smaller than the tool string. They are spring-loaded and will be lifted as a tool is pulled through but will fall back as soon as the tool is above the trap. To open the flapper externally, hydraulic pressure must be applied The tool trap remains closed during normal operation. It is only opened at the &#; commencement of a job to allow the downhole tool to descend from the lubricators into the well. It is closed again once the tool is in the well. 11
• 12. EQUIPMENT TOOL CATCHER (OR HEAD CATCHER) The tool catcher is normally placed above the lubricator string and below the ball check valve/grease injection head. Its purpose is to save a possible fishing job should the tool be inadvertently pulled into the top end of the lubricator and the weak point broken. When the catcher is activated, it latches onto the fishing neck of the cable head or slick-line rope socket, and holds the tool safely in the risers. It is compulsory to have at least one 'catching' system, either tool trap or tool catcher in the WHE string. 12
• 13. EQUIPMENT BALLCHECKVALVE The ball valve is situated directly under the Grease Injection Head (GIH). Its function is to automatically shut off the well if the cable should be pulled off the tool and the cable blown out of the hole. It must be in perfect condition to be able to serve that purpose 13
• 14. EQUIPMENT GREASE SEAL FLOWTUBE SYSTEM This section of the Pressure Control Equipment permits the control of well pressure while allowing free movement of the wireline. The pressure seal is maintained by a thick, viscous grease, which is pumped into a small annular space between the wireline and the flowtubes The tubes must be matched to the size of the wireline in use, taking into account any wear on the wireline. Thus for each nominal wireline size there is a choice of tubes. The supervisor must decide what size tubes are most appropriate for the cable. For example, a brand new 7/32 cable will probably require flowtubes that have an ID of .226". 14
• 15. EQUIPMENT STUFFING BOX AND LINE WIPER The second part of the GIH grease seal equipment is the Packoff (also called the Stuffing Box), which is located immediately above the grease tubes. It is used to seal around the wireline in an emergency or when the wireline will be stationary for an extended period of time. The device remains open during normal operation. The liner wiper is mounted above the packoff and is not designed to hold pressure. Its function is to remove excess grease from the surface of the wireline. 15
• 16. EQUIPMENT QUICK PRESSURE TEST SYSTEM Best practice for multiple runs wireline operations dictates that the full lubricator string is pressure tested before the first run in the well. For subsequent runs, it is required to pressure test only the connection that has been broken to introduce the wireline tool or perforating gun into the lubricator string The Elmar Quick Test System has been designed to save rig time when pressure testing the Wireline Pressure Control String. The full system comprises a Quick Test Sub - QTS, and a hydraulically operated Venting/Glycol Injection Valve. 16
• 17. EQUIPMENT FLANGED ADAPTERS A flanged adapter is the safest method of connecting a WHE string to a wellhead, as it distributes more evenly the weight of the entire lubricator string, and any bending stresses transmitted through it A flange is defined by: . Its nominal size . Its pressure rating . Its ring number. 17
• 18. EQUIPMENT HAMMER UNIONS (WECO) Hammer Unions, also called "Wing Unions" or WECD Unions are quick makeup and break-out pipe and fitting connectors often used to connect oil-field temporary piping. The original design of the WECD connector belongs to FMC,but it has been copied by several other manufacturers. The primary components in these connectors are . A male sub with a spherical sealing surface · A female sub with external acme threads and an elastomeric seal · A wing nut with internal acme threads to hold the components together. 18

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