Description And Study Of Water Injection Development Of Chang7Group Reservoir In Xia Si Wan Oil Field Wang Ping Area

It is analysed that the current domestic oilfield development are in the mid-late period.Meanwhile water content is relatively high, and decreases rapidly, which brings new test to thenational energy security. In order to ensure the country’s energy supply, the developmentefforts of old oilfields or blocks of relatively poor reservoir should be increased, which canhelp to achieve the energy to succeed.Xia Si Wan oil field Wang ping district is located in the dragon mouth gully region,belonging to low porosity and low permeability oil fields, which covers the area from the new33rd Well on the north to the new49th well and27th well on the south, from the new45thwell and the gold oil19th Well on the west to the new60ith Well on the east, the coveragetotally reaches198km2, nowadays26Wells were drilled in the area. During the maindevelopment series of the Chang7reservoir,7wells have been tested separately, of which4Wells have reached to industrial oil flow, the average production of oil is3.3square every day,and the water production is2.4square, which indicates the overall scale of oil reserves arevery rich. However, the oil production of the Chang7reservoir declines quickly, it issupposed that the formation pressure is too low, so it is difficult to stabilize the yield.The reservoir geology description and water injection development were studied in thispaper. Through the experimental research on water injection development of Chang7reservoirin Xia Si wan oil field Wang Ping area, the formation characteristics were determined, andthen the reservoir characteristics and reservoir characteristics were concluded, therefore the oilreserves were evaluated and calculated initially, finally the3D geological model of reservoirwas established. Water injection development demonstration zone will be optimized further,and the policy on advanced water injection of Chang7reservoir will be established, then theWater injection scheme will be proposed, which can be applicated in the region of Wang PingDistrict according to the experience of development demonstration zone.The reference can be provided for studying the same type of reservoir description andchoosing water injection development ways.