苏北油田同心分注工艺的应用实践与评价
|
摘要
针对苏北油田注水井偏心分注工艺存在测试投捞工作量大及测试误差大等问题,引进同心分注测、调一体化工艺,并在茅山、草舍、仓场等区块应用6口井。分注方式为一级两段、两级两段和两级三段,最大井深3 075 m,层间压差小于20 MPa,单层配注量10.34~28.56 m3/d,误差0.82%~4.80%,较大提高分注井测调效率及精度,满足了苏北油田精细分层注水的需要。
In Subei oilfield, the casting and fishing operation in logging of eccentric injection technology of injection wells need lots of work with large error. So the concentric injection technology with simultaneous testing-debugging is brought in and applied in 6wells in Maoshan, Caoshe, Cangchang and so on. The injection manners are injection in two layers with one packer, injection in two layers with two packers and injection in three layers with two packers. The maximum hole depth is 3 075 m. The interlayer pressure differential is less than 20 MPa. The injection allocation rate of single layer is 10.34 ~ 28.56 m3/d. And the error is 0.82 % ~4.80 %. The testing-debugging efficiency and accuracy of separate injection wells are greatly increased, which meet the needs of the fine separated layer water injection in Subei oilfield.
In Subei oilfield, the casting and fishing operation in logging of eccentric injection technology of injection wells need lots of work with large error. So the concentric injection technology with simultaneous testing-debugging is brought in and applied in 6wells in Maoshan, Caoshe, Cangchang and so on. The injection manners are injection in two layers with one packer, injection in two layers with two packers and injection in three layers with two packers. The maximum hole depth is 3 075 m. The interlayer pressure differential is less than 20 MPa. The injection allocation rate of single layer is 10.34 ~ 28.56 m3/d. And the error is 0.82 % ~4.80 %. The testing-debugging efficiency and accuracy of separate injection wells are greatly increased, which meet the needs of the fine separated layer water injection in Subei oilfield.
引文
[1]黄甫,杨元明,王小娟,等.桥式同心分注工艺技术研究与应用[J].中国石油和化工标准与质量,2013,33(15):75-76.
[2]张宏录,张庆华,李艺玲.苏北油田分层注水工艺技术现状及对策[J].油气藏评价与开发,2011,1(3):50-53.
[3]耿海涛,肖国华,宋显民,等.同心测调一体分注技术研究与应用[J].断块油气田,2013,20(3):406-408.
[4]宋祖厂,刘杨,盖旭波,等.桥式同心分注技术及其在深斜井中的应用[J].石油矿场机械,2013,42(7):62-65.
[5]李宏伟,袁永文,杨红刚,等.桥式同心分注工艺在青海油田的应用[J].青海石油,2014,32(3):65-70.
[6]肖国华,耿海涛.大斜度井偏心分注钢丝投捞工具的改进与应用[J].石油机械,2012,40(8):90-92.
[2]张宏录,张庆华,李艺玲.苏北油田分层注水工艺技术现状及对策[J].油气藏评价与开发,2011,1(3):50-53.
[3]耿海涛,肖国华,宋显民,等.同心测调一体分注技术研究与应用[J].断块油气田,2013,20(3):406-408.
[4]宋祖厂,刘杨,盖旭波,等.桥式同心分注技术及其在深斜井中的应用[J].石油矿场机械,2013,42(7):62-65.
[5]李宏伟,袁永文,杨红刚,等.桥式同心分注工艺在青海油田的应用[J].青海石油,2014,32(3):65-70.
[6]肖国华,耿海涛.大斜度井偏心分注钢丝投捞工具的改进与应用[J].石油机械,2012,40(8):90-92.