Southwest Petroleum University

Chengdu Leps Technology Co., Ltd

Qianli Lu

Jianchun Guo

Shan Ren

Shaobin Zhang

Su Diao

Qingsong Guo

Jiapeng Zhang

Bin Liu

Chi Chen

Cong Lu

Yong Ren

Kun Wang

Tao Zhang

Zhihong Zhao

Yuxuan Liu

Chaojun Tang

Hao Yang

Zhuang Liu

Mingyuan Zhou

Yang Lu

Le He

Hangyu Zhou

Songgen He

Jiyu Wang

Yingxian Ma

Ji Zeng

Xin Lei

Shouyi Wang

Hongmei Wang

Hengbo Zuo

Yongxin Zhu

A suspended sand dragging fiber and a preparation method thereof, the method including: dispersing nanoparticles into a first solvent, adding a coating agent and a flexibilizer to the first solvent, and stirring and aging to obtain a surface treatment agent; adding a surfactant to a second solvent, adding alkyl polyether siloxane to the second solvent after the surfactant is dissolved in the second solvent, and stirring to obtain a finishing agent; transferring the surface treatment agent to a sizing trough of a sizing machine, sizing polyester fibers using the sizing machine, and drying and curing to obtain surface-modified fibers, and diluting the finishing agent to obtain a finishing agent solution, and treating the surface-modified fibers with the finishing agent solution to obtain the suspended sand dragging fiber.

Suspended sand dragging fibers and preparation methods thereof

A structural stabilizer for a fiber and proppant complex to enhance proppant migration and placement in a fractured well during propping and a preparation method thereof are provided. The structural stabilizer consists of: water, inorganic salt, kaolinite, nitrogen-doped modified graphene oxide, anionic surfactant, non-ionic alkyl polyglucoside, and polyacrylamide. The structural stabilizer improves bonding between a proppant and a fiber when slick water is used in stimulated reservoir volume (SRV) fracturing, prevents separation of the fiber and the proppant during migration, thereby reducing escape rate of the fiber from the fiber and proppant complex.

Structural stabilizer for fiber and conventional proppant complex in efficient proppant migration and placement technology of fractured well and preparation method

A method for determining sand pumping parameters based on width distribution of fracture, including: acquire basic parameters of a target reservoir, simulate a propagation of the fracture, and obtain a propagation pattern and width distribution of the fracture; determine a maximum proppant particle size for entering the fracture at all width levels according to statistical results of the width distribution of the fracture; determine a multi-size combination of proppants according to a mapping table for particle size vs mesh of proppants, and determine an initial ratio of the proppant with each particle size; conduct a numerical simulation of proppant transportation in the fracture to determine a retention ratio of the proppants with each particle size; correct the initial ratio of the proppants with each particle size; calculate an amount of the proppants with each particle size according to the final ratio and the sand pumping intensity and fracturing interval length.

Method for determining sand pumping parameters based on width distribution of fracture

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Chengdu, China

Qianli Lu