期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：237
期号：4
页码：042035
DOI：10.1088/1755-1315/237/4/042035
出版社：IOP Publishing
摘要：On account of the influence of early technical level and transformation concept, the production of the test horizontal wells has been improved to a certain extent, but there are still some problems, such as low pressure decline, low sustainable and stable production capacity. Refracturing technology is one of the main measures to improve the output of old wells in domestic and foreign oilfields at the moment. However, the horizontal wells put into production in early stage of Mahu were segmented with open hole packer and ball sliding sleeve. Restricted by the current wellbore conditions, forced mechanical segmented refracturing could not be achieved. People make use of the high-strength temporary plugging system to automatically select geological dessert, realize multiple inter-layer and intra-layer steering, improve the complexity and sweep volume of artificial fractures, and achieve the partial function of stimulated reservoir volume fracturing, which has become the effective increase production technology and means.
