摘要：With the continuous development of drilling well depth, the drilling process often faces high-temperature and high-salt formations. In this environment, drilling fluids can fail, leading to complex downhole problems like excessive filtration loss and hole destabilization. To address these issues, a new polymer filtration control agent, AASDD, was synthesized through free radical polymerization. The raw materials used were Acrylamide, Sodium p-styrenesulfonate, Diallyl dimethyl ammonium chloride, and Vinyltriethoxysilane (A-151), with Divinylbenzene as the crosslinking agent. The optimal molar ratio for these components was 9.26:1.92:2.45:1.66:1.00. The performance and fluid loss mechanism of this new polymer were evaluated through various tests, including fluid loss tests, salt resistance tests, and analyses using SEM and TEM. The results confirmed that the three-dimensional structure of AASDD adsorbs bentonite through ionic and covalent bonds, resulting in superior temperature and salt resistance compared to conventional structures. Specifically, the bentonite slurry containing 1.5 % AASDD exhibited an API filtration loss of only 8 mL after aging at 260°C for 16 h. Additionally, the bentonite slurry with 1 % AASDD showed an HTHP loss of 30 mL at 210°C, whereas the bentonite slurry without AASDD experienced total fluid loss. At the same time, bentonite paste with 1.5 % AASDD demonstrated resistance to ultrahigh temperatures of 210 °C for more than three days and withstood saturated Na salt and over 6 % Ca salt. This study provides new insights for the structural design of drilling fluid treatment agents for future 10,000-meter-deep wells. ? 2024 Elsevier B.V.

ISSN号：1385-8947

卷、期、页：卷502

发表日期：2024-12-15

影响因子：13.200000

期刊分区（SCI为中科院分区）：一区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：Chemical Engineering Journal

通讯作者：郭友,杜明亮,吕艳华

第一作者：贺垠博,蒋官澄

论文类型：期刊论文

论文概要：郭友,杜明亮,吕艳华,贺垠博,蒋官澄，Study of three-dimensional reticulated filtration control agent formed by condensation of A-151 in long-lasting, ultra-high-temperature-resistant, salt-resistant, and filtration-loss-reducing，Chemical Engineering Journal，2024，卷502

论文题目：Study of three-dimensional reticulated filtration control agent formed by condensation of A-151 in long-lasting, ultra-high-temperature-resistant, salt-resistant, and filtration-loss-reducing