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Cheng Y.,China University of Petroleum - East China | Zhi Q.,China University of Petroleum - East China | Zhi Q.,Oil Production Research Institute | Zhao Y.,Oil Production Research Institute | And 2 more authors.
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | Year: 2010

Based on the generalized Darcy's law and fluid-solid coupling theory, this paper constructed sand out fracturing artificial fracture and reservoir system fluid-solid coupling model which was in permeability anisotropy unconsolidated sand formation; and simulated also analyzed influence of fracturing creature and depressurized production fluid-solid coupling effect on formation stress, porosity permeability characteristics and production behavior. Sand out fracture creation influence on formation physical property was mainly showing within 10 meters of borehole; and the bigger the creation width, the more apparently of influence; the farer from borehole and artificial fracture, the slower of the formation physical property changing. Formation porosity permeability parameters were changing outstanding at the beginning of well production; formation porosity permeability parameters which were only changing with space location were getting steadily following the increasing of the production time. Near fracture formation elasticity modulus was apparently increasing under the combination influence of the fracture creation and depressurization production coupling effect; and formation parameters was apparently decreasing; and the fracture well production was lower than normal seepage flow model prediction result. The fluid-solid coupling effect influence must be taken into consideration when the formation with stronger stress sensitivity is being done the production behavior analysis.

Nie F.,Oil Production Research Institute | Shi Q.,Oil Production Research Institute | Guo L.,Oil Production Research Institute | Chen W.,Oil Production Research Institute | Li D.,Oil Production Research Institute
Well Testing | Year: 2011

During production period, the problem of water location and water shut-off are more and more outstanding. Based on the extensive investigation, the present situation of water detection tech in the horizontal well is introduced, which mainly includes production profile logging technology, interpretation for reservoir parameter logging technology, test instrument transporting technology, and so on. Through summarization, the development trend of water detection process in the horizontal well is predicted.

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