Enhanced Oil Recovery, Secondary, and Tertiary Recovery
RecoverySoft / May 16, 2018

Did you know that much of the oil in the ground is still present after primary recovery? In the kings english, that means there is still a lot of oil left in a well even after 10 years of pumping. The reason oil production slows is that the natural drive that once pushed oil aggressively towards the wellbore has subsided. Normally, the natural drive is either water or gas in the formation. In this article, we look to explain some of the common enhanced or secondary / tertiary methods of oil recovery. With oil hitting new highs every day, it is clear the cost benefit of utilizing technology to get at extra production makes sense. When oil was in the $ 10-20 range, the incremental cost of some enhanced oil recovery methods did not make economic sense. One of the most common secondary recovery methods is a waterflood. Essentially, a waterflood is a reintroduction of water into the formation to create a drive to push more oil towards the wellbore. To increase the efficiency of a waterflood, new methods utilize Alkaline-Surfactant-Polymer floods and some explorers are introducing microbes into the wellbore to increase the sweep efficiency of the flood, both…

How To Read Jewelry Marks
RecoverySoft / April 2, 2018

The number markings on precious gold jewelry are a bit of confusion to lots of people. We are generally used to seeing a karat or silver mark like this: 10K, 14K, 18K, Sterling, etc. The numbers mean the same thing. For 14k the number is technically 583 but most manufacturers adopted the European way and make 14k gold a tiny bit over 14k, so the mark is 585 in most 14k jewelry. 18K is marked 750. If the mark is valid and there is a makers mark also in the jewelry, the number means these items are 18k gold. Here is where the numbers come from. Pure gold is called 24 karat. For 18k gold, there are 18 parts of pure gold mixed with other metals to make the metal suitable for use in jewelry. 24k is too soft alone to stand up or to hold stones well. 18 parts pure gold divided by 24, or 18/24 equals 750. That is where the number comes from. The jewelry is 75% pure gold, 750 parts gold with 250 parts other metals out of “1000” parts. It is easier to think of it as a percent which is pure gold in the…