Forecasting of Pressures Required in Tension Fracture of Fault Rock and Suggestions for Safe Production in Oilfield:An Example from Faults Controlling Oil Accumulation of N1m 1 in Qinhuangdao 33-1S and Qinhuangdao 33-2 Oilfields
Fu Guang
Liu Zhe
Hu Guangyi
Fan Tingen
Wang Chao
LYanfang
Abstract：To ensure safe production of Qinhuangdao 33-1S and 33-2 oilfields,based on the study of test of crushing resistance intensity and regional stress characteristics,a method forecasting pressure required in tension fracture of fault rock is proposed in this paper by using fault rock as a dip rock and contrasting between fault rock and surrounding rock.The new method is tried in forecasting pressures required in tension fracture of fault rock of faults controlling oil accumulation of N1m1 in Qinhuangdao 33-1S and Qinhuangdao 33-2 oilfields.Results indicate that pressures required in tension fracture of fault rock of faults control-ling oil accumulation of N1m1 is 25.6-31.3 MPa,with the average value of 29.4 MPa.It is found that safe production can be guaranteed in Qinhuangdao 33-1S and Qinhuangdao 33-2 oilfields if water injecting pressure is smaller than 25.6-31.3 MPa after it is reduced from water injection well to fault.Otherwise,oil might escape to sea bottom from fault.
Keywords：fault rocktension fracturewater injecting pressureforecasting methodsurrounding rockQinhuangdao oilfield
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 1333-1339 )