A Review of Starches and Their Derivatives for Oilfield Applications in China
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English Slovak |
| Online Access: | http://www.viks.sk/chk/star_9_01_401_407.doc |
| Abstract: | Summaries. As a class of important polymeric additives, numerous starches and their derivatives have been prepared and their suitability studied for various oilfield applications such as filtrate-loss control, mud-rheology modification, shale stabilization, enhanced oil recovery (EOR). drag reduction, and water shutoff, and some of these starches have been widely used in this area. These materials include mainly pregelatinized starches, ether-ified starches, and grafted starches. This article provides a review of their research and development in view of the special situation in China. Some important features of their properties are also presented. Conclusions. Oilfield applications of starches and their derivatives are receiving increased attention because of the low cost and availability of these starches and their environmental acceptability. It is known that the specific applications of starches and their derivatives in oilfields depend on their solubility, molecular weight, type and number of the functional groups on the polymer chain, and chemical nature of the backbone structure. Meanwhile, the reservoir conditions such as temperature, salinity, hardness and the pH of formation water influence the use effectiveness of these starches. This paper reviews briefly the research and development of starch-based oilfield chemicals in China involving mainly pregelatinized starches, etherified starches and grafted starches. Further research will focus on the property improvement of conventional starch products, the preparation of new kinds of starch derivatives and their novel oilfield applications. |
|---|---|
| ISSN: | ISSN 0038-9056 |
