sands used with ceramic proppant
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It is a kind of solid resin coated moulding sands or core sands by using the high quality natural silica sand as raw sand, thermoplastic phenolic resin, urotropin and enhancer as other materials. It is used in the oil and gas fracturing process to support, prevent flow back and increase the production.
How resin-coated sand comes?
As the proppant's flowing back appears in some oil and gas wells after the fracturing, it will negatively impact on fracturing result and the flowing back proppant will destroy the equipment in the well and above-ground. For this kind of well, we should take effectively control measures to prevent the flowing back and ensure the fracturing result
Feature of resin-coated sand
It has the feature of low density (lower than silica sand), easy-pumping, anti-corrosion and high temperature resistance. Besides, it provides good performance of oil penetrating and water blocking.
That's of great significance to continuous stable and high production of low permeability oilfield exploiting and development in the mid to late. But its crush rate will increase along with the rise of closure pressure.
That will narrow the crack width with the effect of resin elastic deformation, grain crushing and rearrangement. Then it will affect the porosity and permeability of the generated cracks
Raw materials of producing resin coated sand:
Silica sand, resin, assorted curing agent, urotropine, calcium, KH-550, epoxy resin curing agent and O-type toughening agent.
Performance of Resin-coated Sand:
1. Low density. Because of low density, the amount of proppant used in fracturing was decreased in the equal crack size. And it can also reduce the carrying fluid consumption to reduce fracturing cost.
2. Good roundness & sphericity.
3. High crush resistance.
4. Low turbidity.
5. Low acid solubility. After resin coated, the sand acid resistance, alkali resistance and salt resistance are enhanced.
6. Good long-term conductivity. The RCS wraps most of the broken sand crushed under high closure pressure, even if the sand is crushed, the debris and fine powder are wrapped in a resin shell to avoid their migration, providing a good conductivity.
- Q:How to refine crude oil? There are many ways to refine, it is best to explain how to refine, and significance, steps, to give help to the maximum points
- Just from the ground out of the crude oil as carbon content and high temperature carbonization, easily cooked distillation into blocks to handle, so first by low pressure distillation for distillation, low pressure to reduce the boiling point of the liquid, the crude oil will boil at very low temperatures, the prevention and control of the crude oil of carbon.
- Q:What are the factors that affect the price of crude oil
- Mainly for the following reasons:1, the imbalance between supply and demand is difficult to shakeThe main reason for the decline in oil prices is the global oversupply of crude oil. On the one hand, the major oil producing countries to step up production, on the other hand, the global economic slowdown to suppress demand for crude oil.
- Q:NYSE crude oil futures have no limits on the day up or down
- No rise or fall limit.New York futures exchange light crude oil:Because of the strength of the United States super oil buyers, coupled with the impact of the New York stock exchange itself, to WTI as the benchmark crude oil futures trading, commodity prices in the global commodity futures became the leader.
- Q:From a year or so, nearly six months, nearly a month to analyze this
- (two) the law analysis of the economic cycle and the adjustment of crude oil priceWe can divide the development of global economy since 1983 has been divided into five economic cycles, including four complete cycles: 1983 - 1988, 1989 - 1996, about 1997 to 1999, about 2000 to 2007 or so. In each cycle, the global economy began to fall from the peak of the previous cycle, and then gradually recovered after bottoming, from recession to prosperity. At present, the global economy is in fifth cycles.Can be seen from Figure 5, the first complete cycle, changes in crude oil prices and the economic cycle has a significant correlation between the recovery and growth of each round of economy have led to a rise in the price of oil, and every round of economic recession has led to a drop in oil prices. In the current economic cycle, this relationship is more obvious: the U.S. subprime mortgage crisis triggered by the global financial crisis, leading to the global economic recession, into a downward cycle, crude oil prices also fell sharply, the New York Mercantile Exchange, Brent crude oil spot price by the end of 2007 of $93.9, fell to 2008 barrels at the end of the 41.8 U.S. dollars / barrel, a drop of 55.5%.
- Q:The problems such as the title, I am very interested in the stock investment recently, do not know between them and the stock in the end is what links, please prawns generous with your criticism
- First, crude oil, gold, the dollar is very strong linkage. So, let's talk about the relationship between the three of them.Gold and the dollar are negatively correlated. In my long-term analysis of the guidance of gold, silver, crude oil market experience, the international gold prices denominated in dollars, and therefore subject to fluctuations in the price of the dollar.
- Q:Investment in gold with spot oil which good?
- Although the investment model of gold and crude oil is the same, are two-way operation, buy or buy up, speculation prices. However, it is difficult to judge the long-term trend of crude oil only by using technical indicators, because it has many political factors to consider. Even the unusual weather changes should be taken into account.
- Q:What is the relationship between gold, dollars and crude oil prices?
- The relationship between crude oil and the dollar is different from that of gold. The price of gold is influenced by the dollar. CrudeThe price and the price of the dollar reflect an interactive relationship. Crude oil prices, the world economy will be affected, including the United States, the world's largest oil consuming countries. Rising oil prices brought about by the upward pressure on the dollar will bring downward pressure, and the direct result of the depreciation of the dollar is the dollar denominated crude oil prices also increased. Of course, in turn, the decline in oil prices, the economy is a good signal, people's confidence in the U.S. economy will push up the dollar, resulting in lower oil prices. According to expert estimates, the correlation coefficient between crude oil prices and the U.S. dollar exchange rate is -0.7. In other words, high oil prices tend to appear and the weak dollar. Therefore, the dollar trendAnd the price of crude oil should be in the direction of the relationship.
- Q:How to calculate the risk rate of spot crude oil?
- For example, there are a total of 100 thousand funds account, Mancang bought stock products, then the current interest is 100 thousand, occupy the margin is 100 thousand, 10 divided by 10=1, the risk rate of =100%, this time the system will prompt customers to increase the margin or reduce positions
- Q:International crude oil transaction is equal to how many tons
- The NYSE margin ratio is generally about 1:20, trading with standard hand occupied margin is about $5000, $2500 is small; the CFD margin is generally about 1:100, trading with standard hand occupied margin is $1000, 0.1 $100 entry is relatively low, but CFD not delivery of real transaction.
- Q:What is the meaning of ADP data, and the relationship between spot crude oil
- Published value is greater than expected, favorable U.S. dollars, bad crude oil.The announcement refers to less than expected, bad dollar, bullish crude oil.(negative correlation between us dollar and crude oil)
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sands used with ceramic proppant
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