Evaluating Of Development Effects Of Horizontal Well In Yuan 284 Region, Hua Qing Oilfield

Huaqing as one of several major oil fields ready Changqing oilfield discovered in recent years, more than 500 million tons reserves submitted for approval. In order to improve the Chang-63 oil field development effectiveness, were used for horizontal and vertical wells were ahead of two different type wells of waterflood. Because of horizontal well development is still in its infancy, how to objectively evaluate the effect of horizontal well development is particularly important, the paper element Yuan 284 block as an example to evaluate.Aiming Huaqing oil reservoir Chang-63 of 9 small layer, identified as the main layer of 631 layer of Yuan 284, respectively, nine small layer studied structural characteristics, sand distribution, reservoir were qualitative, interlayers and so on distribution pattern. According to Yuan 284 block production data respectively from the production of dynamic production data, production decline law, oil and moisture changes effective characteristic features and other aspects of comparative analysis of different blocks of Yuan 284 zone horizontal wells and vertical wells, horizontal wells zone showing a decreasing trend, decreasing month was percents 3.9.while the yield zone vertical wells remained stable level of production wells is 4.82 times the vertical well production. In addition, the use of water flooding the law element Yuan 284 zone horizontal wells in the block area development effects, better overall water flooding effect. Finally, the use of numerical simulation techniques to predict the ultimate recovery of Yuan 284 block of horizontal wells and vertical wells in two different type wells development, predicted recoverable reserves calculation and 482.88×104m3 of water flooding curve recoverable reserves difference is small, horizontal wells recovery of around percents 10. Geological characteristics and development status of Yuan 284 block results of this study in deeper understanding, for late development provides a very important guiding significance.