Southwest Petroleum University

Wenzhe Li

Yang Bai

Pingya Luo

Feng Dai

Jing Zhang

Gang Xie

Lingfeng Wu

Haibo Liang

Daoxiong Li

Wen Xu

Jiading Deng

Dezhi Liu

Ren Wang

Guancheng Jiang

Jinsheng Sun

Jingping Liu

Kesheng Rong

Danchao Huang

Jintang Wang

A nanographene, a preparation method thereof, and uses thereof are disclosed. The method of preparing the nanographene includes the steps: (1) carrying out a first reaction by contacting a raw material graphite and a first oxidizing agent with an intercalating agent to obtain a modified graphite; (2) performing a second reaction by contacting the modified graphite and an acid with a second oxidizing agent to obtain a graphene pre-product; and (3) subjecting the graphene pre-product to an air-flow exfoliation to prepare a nanographene. An oil-based drilling fluid containing the nanographene produced by the method is also disclosed.

Nanographene and preparation method and use thereof and oil-based drilling fluid

The present disclosure a leak-proof lost-circulation control water-based drilling fluid composition and preparation method and use thereof.

Leak-proof lost-circulation control water-based drilling fluid composition and preparation method and use thereof

A preparation method of a fully adaptive modified nanographene plugging type anti-collapse drilling fluid is disclosed. A modified nanographene slurry anti-collapse agent and a water-based drilling fluid containing the modified nanographene slurry anti-collapse agent are disclosed. The preparation method includes subjecting a nanographene and a mixed acid to a first contact to obtain a mixed liquid, dropwise adding potassium chlorate into the mixed liquid under the condition of ice-bath pan to carry out a modification treatment, so as to obtain a modified nanographene, and subjecting the modified nanographene to a second contact with water to prepare a modified nanographene slurry.

Preparation method of fully adaptive modified nanographene plugging type anti-collapse drilling fluid and use thereof

An oil-based drilling fluid composition, includes a base fluid and a treating agent. The base fluid comprises a base oil and an inhibitor; the treating agent comprises an organic soil, a main emulsifier, an auxiliary emulsifier, a plugging agent, a weighting agent, a humectant, an alkaline regulator and a filtrate reducer. 5-25 parts by weight of the inhibitor, 5-12 parts by weight of the organic soil, 1-6 parts by weight of the main emulsifier, 2-8 parts by weight of the auxiliary emulsifier, 3-18 parts by weight of the plugging agent, 5-30 parts by weight of the weighting agent, 2-6 parts by weight of the humectant, 2-7 parts by weight of the alkaline regulator and 2-10 parts by weight of the filtrate reducer are used, based on 100 parts by weight of base oil.

Oil-based drilling fluid composition, oil-based drilling fluid and preparation method and use thereof

The present disclosure a pressure-bearing plugging agent, comprises a core, a first coating layer and a second coating layer which are sequentially coated on an outer surface of the core, wherein the core is made of a water-absorbing swellable material, the first coating layer is a paraffin layer, and the second coating layer is obtained by cementing the rigid particles with an adhesive.

Pressure-bearing plugging agent and preparation method and use thereof

A fiber silica composite microsphere for a shale stratum comprises a hollow silica sphere and fibers, and the fibers are partially coated on an outer surface of the hollow silica sphere and partially embedded into an interior of the hollow silica sphere. The hollow silica sphere has an outer diameter of 1-5 &#x3bc;m and an inner diameter of 0.8-4.7 &#x3bc;m; the fibers have a length of 5-10 &#x3bc;m and a width of 1-3 &#x3bc;m.

Fiber silica composite microsphere for shale stratum, drilling fluid and preparation method and use thereof

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Chengdu, China

Wenzhe Li