The Optimization Research Of Xinjiang Oilfield Dense Oil Reservoirs Horizontal Wells Segmental Fracturing Design

With the progress and development of China's oil exploration and development technology,there are fewer and fewer conventional reservoirs in China,and the unconventional reservoirs such as dense reservoirs are increasing.The proportion of tight reservoirs in total oil production is increasing highlighted.Horizontal well mining and its associated horizontal well fracturing technology has become an important method for the development of dense reservoirs in China.However,the current research on the fracturing process theory of horizontal wells in Xinjiang Oilfield is not enough,and the supporting measures are not perfect,and it is necessary to guide the practice progress by theoretical research guide,and then to optimize the horizontal fracturing design.Based on the thorough investigation of the completion technology at home and abroad and the horizontal fracturing process of horizontal wells,this paper combined with the geological characteristics and fluid properties of the Jinlong 10 block and Gu 16 block reservoir in Xinjiang Oilfield,completed the horizontal wells of the target block completion mode selection and recommended for the target reservoir completion way.Based on the obtained reservoir parameters,the numerical model of horizontal well fracturing was established by using Eclipse numerical simulation software to optimize the fracturing length,the number of segments and the crack spacing of two horizontal wells in the target block.Through the three-dimensional fracturing software and theoretical analysis of FracproPT three-dimensional fracturing software and the fracturing of straight wells and horizontal wells in two blocks,the fracturing and diversion ability,construction displacement,pre-liquid ratio and sand concentration,construction scale and so on.Finally,the optimal fracturing parameters of two typical horizontal wells are given,and the post-press effect is analyzed.Some conclusions and suggestions on the fracturing design of the horizontal wells in the two reservoirs of Xinjiang Oilfield are obtained,which can better guide the optimal design and construction parameters of horizontal well fracturing in other tight oil and gas reservoirs in Xinjiang oilfield.