US 12,460,121 B2
Composition, preparation method for and application of composition, and self-healing method for well cementing in oil/gas field
Hongwen Liang, Beijing (CN); Gewei Peng, Beijing (CN); Hailiang Zhang, Xiangtan (CN); Xiaojun Mo, Beijing (CN); Fan Yang, Beijing (CN); Junhua Zhang, Beijing (CN); Xu Wang, Beijing (CN); Qichun Wang, Beijing (CN); and Min Zeng, Beijing (CN)
Assigned to CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN)
Appl. No. 18/005,914
Filed by CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN)
PCT Filed Jul. 21, 2021, PCT No. PCT/CN2021/107562
§ 371(c)(1), (2) Date Jan. 18, 2023,
PCT Pub. No. WO2022/022355, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 202010759397.8 (CN), filed on Jul. 31, 2020.
Prior Publication US 2023/0295483 A1, Sep. 21, 2023
Int. Cl. C09K 8/493 (2006.01); C04B 14/36 (2006.01); C04B 24/26 (2006.01)
CPC C09K 8/493 (2013.01) [C04B 14/368 (2013.01); C04B 24/2676 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A composition, wherein the composition has a density of 1.2-2 g/cm3, a water contact angle not more than 90°, and a diesel oil and/or natural gas absorption expansion ratio of 5-15 times,
wherein the composition comprises a hydrogenated styrenic thermoplastic elastomer, a hydrophilic polymer and an inorganic filler, wherein the hydrophilic polymer is coated on the surfaces of said hydrogenated styrenic thermoplastic elastomer and said inorganic filler, a weight ratio of said hydrogenated styrenic thermoplastic elastomer to said inorganic filler is from 30:70 to 70:30:
wherein a weight ratio of the hydrogenated styrenic thermoplastic elastomer to the hydrophilic polymer is from 1:0.01 to 1:10.1, and
wherein the hydrophilic polymer contains hydrophilic functional group, which is one or more selected from the group consisting of a hydroxyl radical, an amino group and a carboxyl group.