楚17-2井探边测试成果分析

An Analysis of the Limit Test Results of Well Chu 17-2.

华北油田楚 17 2井采用抽油机方式进行开采 ,以 2 6m3 d的产量生产了近 30 0h ,动液面由井口下降到 12 0 0m ,流动压力下降较大。为弄清该井所在区块油层特性、断块形状及地层能量等油藏参数 ,进行了电子压力计探边测试。测试结果表明 ,该油藏为三角形混合边界油藏 ,即井周围存在两条不渗透边界和一条定压边界 ,油层渗透特性良好 ,油层平均压力为 15.6 8MPa ,低于初期所测的原始地层压力 2 5MPa 。

Well Chu 17-2 in Huabei oil field was first put into production by the way of mechanical lift with a pumping unit, after nearly.300 h production with a rate of 26 m 3/d, dynamic liquid level was dropped from wellhead to 1200 m,flowing pressure wasdeclined greatly. For clarifying the reservoir parameters such as formation characteristics, fault block shape and reservoir energy of the block where the well is located, a limit test with an electronic gauge was conducted, the test results show that thereservoir shape is triangle, there exist two nonpermeable boundaries and a constant pressure boundary, formation is very permeable, average reservoir pressure is 15. 68 MPa, much lower than 25 MPa——initial reservoir pressure measured at the verybeginning, indicating very limited controlled area of the reservoir.