Southwest Petroleum University

Vertechs Oil & Gas Technology Co., Ltd.

Chinese Academy of Sciences

Zhongke Xinghe (shandong) Intelligent Technology Co., Ltd.

Yuan Gao

Wei Jun Zhang

Yang Yang

Qijun Zeng

Xinyang He

Yubin Gong

Zaoyuan Li

Sheng Huang

Haibo Jiang

Zijun Chen

Jiangnan Fu

Dengpan Xie

Can Zhou

Baowen Zhang

Donghua Su

Dan Tang

Disclosed is a low-molecular-weight composite contamination-resistant additive for well cementing, which includes: 60-85 parts by mass of low-molecular-weight phosphonic acid polymer solution and 15-40 parts by mass of silicate solution. The silicate solution is a low-modulus silicate solution with a mass fraction of 25%-45%, and the low-molecular-weight phosphonic acid polymer solution is a polymer solution with a mass fraction of 35%-60% and prepared from a phosphonic acid group-containing monomer, a rigid group-containing monomer and a carboxylic acid group-containing monomer. The present invention can form stable slurry after being added with drilling fluid, which meets the contamination-resistant requirements under low addition conditions and significantly reduces an amount of spacer fluid used. Compared with the retarder-type contamination-resistant additive that uses the retarding effect to prolong the thickening time, the present invention has a significant effect on abnormal gelation and reducing the consistency of mixed slurry.

Low-molecular-weight composite contamination-resistant additive for well cementing

An auxiliary system for intelligent well control includes augmented reality (AR) glasses, a server, and a first sensor group. The first sensor group is configured to collect real-time data of a wellbore and the surface and transmit the real-time data to the server. The server is configured to analyze a target pressure value of a choke valve of the surface according to the real-time data, obtain an actual pressure value of the choke valve of the surface from the real-time data, and transmit the actual pressure value and the target pressure value to the AR glasses. The AR glasses are configured to dynamically display the actual pressure value and the target pressure value in real time. Through the first sensor group and the server, the actual pressure value and the target pressure value can be accurately received by an operator in real time.

Auxiliary system and method for intelligent well control

Growing community of inventors

Chengdu, China

Yuan Gao