Abstract
Most of the existing hydraulic fracturing adopts continuous placement of proppant. However, there are few studies about discontinuous proppant placement. In order to evaluate the effect of discontinuous proppant pillar in conductivity, conductivity experiments are done to testify by using sandstone and shale rock cells. The result shows that, for ceramic sands and coated sands, in low closure pressure which is less than 40 MPa, it has extremely higher conductivity, and the conductivity declines as the pressure increases higher than 40 MPa which indicates that the highway constructed by pillars is the main factor to affect the conductivity. It has little difference with continuous placement of proppant when it is in high pressure. For high sand concentration, it is easy to get high conductivity. However, the increase rate will decline with the increase of closure pressure, while when the resin coated sand is placed in monolayer pillar, the conductivity could be 1–2 orders of magnitude higher than homogeneous proppant placement which indicates that under the premise of obtaining the same conductivity using less proppant could lead to higher conductivity so that we can save material and time for treatment.
Copyright 2017, Shaanxi Petroleum Society.
This paper was prepared for presentation at the 2017 International Field Exploration and Development Conference in Chengdu, China, 21–22 September 2017.
This paper was selected for presentation by the IFEDC&IPPTC Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the IFEDC&IPPTC Committee and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC&IPPTC Committee, its members. Papers presented at the Conference are subject to publication review by Professional Committee of Petroleum Engineering of Shaanxi Petroleum Society. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of Shaanxi Petroleum Society is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of IFEDC&IPPTC. Contact email: paper@ifedc.org or paper@ipptc.org.
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Xu, G., Yang, X., Shi, Y., Jiang, Y., Li, F. (2019). Experimental Study of Discontinuous Proppant Placement in Conductivity. In: Qu, Z., Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2017. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-7560-5_109
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