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The washing line itself retracts easily into the UV-resistant casing when it’s not needed, and is long enough to hold approximately three loads of washing when fully extended. However, it does have a tendency to stretch, which is its biggest downside. Nominal weight per foot is the weight per foot that is reflected in casing tables and is an approximate average weight per foot of the pipe with API connections, including upsets, threads, and couplings. When performing casing design, it is very important to note that the API joint-strength values are a function of the ultimate tensile strength. This is a different criterion from that used to define the axial strength of the pipe body, which is based on the yield strength . If care is not taken, this approach can lead to a design that inherently does not have the same level of safety for the connections as for the pipe body. This is not good practice, particularly in light of the fact that most casing failures occur at connections. This discrepancy can be countered by using a higher design factor when performing connection axial design with API connections. The cost of casing is a major part of the overall well cost, so the selection of casing size, grade, connectors, and setting depth is a primary engineering and economic consideration.

API Spec. 5B, Specification for Threading, Gauging, and Thread Inspection of Casing, Tubing, and Line Pipe Threads, 14th edition. 1996. Dallas: API. This retractable washing line is best fitted to a wall for stability, but some customers have had success fixing it to strong fence posts, so there is a bit of flexibility on where it can be positioned. When retracted, the unit measures around 18 x 12 x 15 cm which doesn’t take up a lot of space.

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Thanks for the info - you know how it goes sometimes when you just need to write stuff down and talk about it to make sense of it all? The following are the various casing types& configurations that can be used for onshore and offshore wells. Onshore Wells If the thrust surface happened to be even, then keep the tool same way mounted each time and keep however many shims it takes to prop the legs from the case bolts. According to a familiar proverb, necessity is the mother of invention and this rings just as true in the food and drink market as anywhere else. The American Petroleum Inst. (API) has formed standards for oil/gas casing that are accepted in most countries by oil and service companies. Casing is classified according to five properties:

Liners are used in a variety of well profiles. They provide unique options and flexibility not seen in conventional casing string installations, such as using coiled tubing for both the liner and the setting string. As a result, drying heavier washing such as towels and jeans can cause the washing line to hang low to the ground, and it’s therefore better suited to drying smaller loads of washing. The supporting casing must be able to support the weight of the liner. While withstanding the axial force exerted against the casing by the liner slips during the installation and any potential force distributions that may occur after the liner installation. A supporting casing string that has been exposed to prolonged drilling operations may be compromised: The choice of the liner system should reflect this. The I.D. of the supporting casing will also govern the nominal O.D. of the liner. As well as the type of liner hanger equipment that you are going to use. Which liner hanger system will be used?

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Typically, the nominal O.D. of the liners used in deep well installations ranges from 508 mm to 114.3 mm. Due to the difficulty of designing a casing program without compromising drilling hydraulics. So, most deep wells include one or more liners. These deep well installations offer design flexibility that conventional casing string installations cannot achieve. Surface casing must be set deep enough to protect freshwater aquifers from contamination, and prevent lost circulation. Because of this, the surface casing is always cemented to surface. Surface casing depths typically vary between 1000 and 3000 ft (300-900 m). The shoulder knobs are now much wider, bringing their inside edge closer to the outside edge of the central tread. This should help transfer grip to the tire’s edge in flat corners. The wider shoulder knobs will also better support load under hard cornering. 2020 Butcher GRID TRAIL Options: