Tubing is mainly used to provide oil and gas flow passage during production of oil and gas wells. For flowing wells, due to the large inner diameter of the CASING, the casing is directly used for production. Due to the density difference, pressure drop and expansion, the liquid flows up rapidly, causing the liquid to slip, resulting in the ineffective utilization of the downhole elastic energy. Running tubing with smaller OD and ID during production can effectively solve the above problems by allowing fluid to flow in the tubing. Therefore, running tubing is required during production of flowing wells. The downhole operation and production of flowing well and non flowing well can be completed by using various tools for tubing running.
The basic requirements of the tubing used for workover are: to comply with the safety and economic principles, to meet the technical requirements adopted during well completion, and to meet the requirements for corrosion resistance and operation measures after the well is put into production.
According to the manufacturing process, oil pipes can be divided into seamless pipes and electric welded pipes. Seamless pipe is a kind of forged steel pipe without welding seam, which is made of hot working steel. After pressing, stretching, heat treatment and other processes, it reaches the standard size of oil pipe, forming a seamless oil pipe series. Electric welding pipe is a kind of pipe with a longitudinal weld formed by resistance welding or electric induction welding without filler metal. The welding edges are squeezed together by mechanical pressure, and the standard size oil pipes are reached through heat treatment and other processes, forming a series of electric welding pipes.
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Working fire in Chicago, 10-31-15
Sure! Here's a rewritten and expanded version of your content:
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I just came across some incredible photos from a recent incident I hadn’t shared yet. It was a corner store fire that happened a couple of weeks ago on West LeMoyne Avenue, near 3358. I had completely forgotten to upload these shots until now.
The situation was intense, and the firefighters were working around the clock to handle it. One of the most striking images shows them cutting through steel gates under the cover of night using powerful saws. The glow of their equipment contrasts sharply against the dark backdrop, creating this almost surreal scene. Another shot captures a firetruck parked at the scene, its lights illuminating the chaos while smoke billows into the sky—a testament to the urgency of their work.
There’s also an image where you can see the thick plumes of smoke rising from the building, enveloping everything in its path. It’s a stark reminder of how quickly situations like this can escalate. And finally, there’s one more photo that really stands out—this time focusing on the firefighters themselves. They’re standing by, ready for action, their faces partly hidden behind masks but their determination clear.
These photos really capture the grit and resilience of everyone involved. If you want to check out the full set, you can find them here: [Code Photography](http://www.codephotography.net/Scenes/Chicago/Still-Alarm-Corner-Store-Fire-/). As always, my goal is to document moments like these authentically and respectfully.
- Code Photography
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This version adds context, personal touches, and additional details to make it feel more human and engaging. Let me know if you'd like further adjustments!