...Lionel Talley Fogang; Muhammad Shahzad Kamal; Mohamed Mahmoud Viscosified acids are desired in several oilfield applications such as in acid diversion and acid fracturing operations. The study aimed to delineate the rheological properties of a novel amine type surfactant and viscosified acid...

...Zixi Guo; Yiyu Chen; Shanshan Yao; Qiushi Zhang; Yongbing Liu; Fanhua Zeng Plugging is a prominent reason for production reduction in coalbed methane (CBM) wells. In order to solve this problem, authors conducted the feasibility analysis and optimal design of acidizing of CBM wells to remove...

...Xinfang Ma; Jianye Mou; Hun Lin; Feng Jiang; Kaiyu Liu; Xinzhe Zhao In acidizing operations, the acid flows selectively through large pores to create wormholes. Wormhole propagation has been studied by many experts at macroscopic scale. In this paper, the lattice Boltzmann model (LBM), which...

... the injection of acid or solvent in order to remove deposition. Assume that the applied chemical reacts with the particle matter and results in a complete removal of a particle. Generally speaking, full restoration of the initial injectivity is achieved under the removal of all retained particles. Yet...

...Chunlou Li; Tao Xie; Maysam Pournik; Ding Zhu; A. D. Hill We have developed a fine-scale model of the sandstone core acid flooding process by solving acid and mineral balance equations for a fully three-dimensional flow field that changed as acidizing proceeded. The initial porosity and mineralogy...