Abstract
Gravel packing is the best choice for sand control completion technology in horizontal wells, with excellent sand control effect, long sand control validity period, and low construction cost. However, compared with vertical wells, the construction of gravel packing in horizontal wells is more difficult, due to the settlement and accumulation of conventional gravel in the horizontal section under the action of gravity. If the parameters are not designed properly, constructions will fail. Therefore, the research on the mechanism of conventional gravel packing in horizontal wells and parameter optimization are crucial. Besides, gravel packing sand control technology for horizontal wells tends to be diversified, integrating a variety of technologies to handle a variety of oil and gas production issues and improve oil recovery. Simultaneously, the upgrading rate of production equipment and gravel materials is becoming faster. Although, the existing mechanism and numerical simulation studies on conventional horizontal gravel packing have been relatively mature, they are not applicable to guide the constructions of horizontal well gravel packing with new materials or new technologies. Therefore, there is an urgent need to conduct mechanistic and numerical simulation studies for new materials and technologies. This paper summarizes the research status of the physical experiment and numerical model of conventional horizontal well gravel packing and the new materials and technologies in horizontal well gravel packing sand control technology. The deficiencies of existing research results on gravel packing in horizontal wells are analyzed and suggestions are made for the future work in physical experimental research and numerical model research. The paper aims to help scholars have a comprehensive and profound understanding of horizontal well gravel packing, to arouse the interest of them to put into the related research.
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