When coiled tubing is run inside of conventional tubing it is often referred to as a velocity string and the space between the outside of the coiled tubing and the inside of the conventional tubing is referred to as themicro annulus. In some cases gas is produced up into the micro annulus.
Here's The First Instagram Photo Ever. Four years ago today on July 16, 2010, Instagram CEO and co-founder Kevin Systrom uploaded the first photo to the app, which was called Codename at the time. This picture of a golden retriever was taken at a taco stand called Tacos Chilakos, and the foot belongs to Systrom's girlfriend, according to a spokesperson for Instagram.
This chapter is a free excerpt from Instagram: How a Photo-Sharing App Achieved a $1 Billion Facebook Buyout in 18 Months. Instagram was invented by Kevin Systrom and Mike Krieger. According to Systroms explanation on the question and answer site Quora, Instagram evolved from a multi-functional iPhone application called Burbn, which was inspired by ideas from FourSquare, a location-based social media site, and the popular game Mafia Wars.