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14 Cards in this Set
- Front
- Back
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Pressure control eq braided line
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Extra BOP with grease injection head in between BOP's
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Additional eq for braided line
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Grease injection head, eq for grease inj and clean, line wiper to wipe WL ekstra BOP ram- greas head inbetween rams
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what is quad BOP and advantages
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consist of four rams, slickline ram, braided line ram, shear and seal ram. adv: can be used with both slickline and braided line operations
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use of braided line
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Heavier operations. where electrical power is needed- tractor, electrical signal for perforations and logging. operating sliding sleeves, milling, retraction of heavy tools etc
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Main functionalities of a tractor
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Push, pull and/or rotate tools/eq in wireline operations.
tractor also makes the wireline tool able to access horizontal parts of well, |
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Tractor challenges
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restrictions in the well(most common). Be aware of obstacles such as geometry changes because of scale, PBR, damage tubing etc.
Also be aware of friction when pulling the wl/with tractor can cause WL to break |
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Purpose of production logging
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Logg the production: Check if perforations are producing, What are we producing, water oil contact, pressure buildup in closed well, friction losses in well.
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Different logging tools
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production logging tool(spinnere måler farta på prod), temperatur, pressure, density, porosity, sonic, gammaray, caliper etc.
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What is deployment
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It is a method for putting more than one toolstring in the well, with the use of an extra BOP which seals around the spacer joint ( component to in between tools). The seal contains the pressure in the lubricator and another tool can be mounted after the first one without exposing the well to the surroundings
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conventional access to well is done by:
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A drilling derrick, Mount a BOP on top of xmas tree, then a riser system. The intervention is done with drill pipes/coiled tubing or WL. Heavy and light intervention can be done, but the back side of this method is high rig cost
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Vertical xmas tree
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Mounted after prod tubing, master valves are located over the production tubing. This makes wellintervention more complicated because intervention equipment have to go through the master valves before entering the well
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Horizontal xmas tree
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The horizontal xmas tree is mounted before the production tubing, and tubing is hanged inside the tree. master valves are located on the side of the tree which makes it easier to enter well with intervention equipment
The top of the tree is closed with a krone plug |
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TFL(trough flow line) concept
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Pump plugs through flowline instead of using Coiled tubing/WL/drillpipe
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RLWI riser less well intervention
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Uses a Well intervetnion ship, mount lubrcator etc on subsea xmas tree, the WL and umbilical connects to lubricator. The umbilical delivers grease to grease injection head. The advantage is that RLWI is much cheaper than using a drilling derrick. and more available because it is not used for drilling. dissadv: can only use WL light intervention
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