公开(公告)号：US11536125B1

公开(公告)日：2022-12-27

申请号：US17844301

申请日：2022-06-20

Applicant: Chengdu University of Technology

Inventor： Bin Yang ,  Hao Zhang ,  Yufan Guo ,  Bo Yang ,  Yin Zhong ,  Yang Yang ,  Wenjing Ma ,  Yue Li

IPC: E21B43/267 ,  B01F23/231 ,  B01F23/50 ,  E21B43/26

Abstract: The present invention discloses a method for proppant suspension and suspension parameter optimization based on bubble bridge effect, comprising: select a proppant and hydrophobically modify its surface to obtain a hydrophobically surface-modified proppant; prepare a bubbly fracturing base fluid; make the first optimization of the base fluids according to the average radius of the proppant and the average radius of the bubbles of the base fluids; optimally select the base fluids selected for the second time according to the interaction energy between the proppant particle and the bubble after the hydrophobically surface-modified proppant mixed with the base fluid; the basic parameters of the bubbly fracturing base fluid selected at the third time were used for the perfect selection for proppant suspension. The present invention establishes a procedure on experimental evaluation and parameter calculation optimization by suspending fracturing proppant with the bubble bridge effect on the hydrophobic surface.

公开(公告)号：US11912933B1

公开(公告)日：2024-02-27

申请号：US18495788

申请日：2023-10-27

Applicant: Chengdu University of Technology

Inventor： Bo Yang ,  Yu Liu ,  Hao Zhang ,  Di Yang ,  Min Ren ,  Yang Yang ,  Ying Zhong ,  Bin Yang ,  Jiping She

IPC: C09K8/60

CPC classification number: C09K8/602

Abstract: The invention provides a suspension modifier directly added into fracturing fluid for real-time proppant modification during fracturing and the application thereof, relating to the field of oil and gas production technologies. The suspension modifier is a controlled release nanoemulsion and comprises surface hydrophobic modifier, surfactant, cosurfactant and water. The suspension modifier is directly added into clear-water or active-water fracturing fluid while the proppant is added into water. After stirring, the suspension modifier is capable of self-assembling and being adsorbed on the proppant surface, so that the proppant surface becomes hydrophobic and aerophilic. The invention no longer requires the proppant to be pretreated, and the bubble-suspended proppant can be obtained directly by adding the suspension modifier to the clear-water or active-water fracturing fluid, and meanwhile adding the proppant to the fracturing fluid. This technology is not only easy to operate, but also low in cost for proppant treatment.