塔河油田超深超稠油油藏人工举升技术

Artificial Lifting Technology Applied in Ultra-Deep &Super-Heavy Oil Reservoirs of the Tahe Oilfield

塔河油田超深超稠油油藏具有"两超五高"的特点,人工举升困难,目前存在深抽能力不足、杆断严重、井筒掺稀降黏成本高和井下抽油泵故障率高等难题。为解决这些问题,攻关研究了大型皮带抽油机、大排量抽稠泵、减载深抽和高温抗稠油电动潜油泵等技术,形成了掺稀气举举升、稠油复合举升和稠油螺杆泵举升等工艺,并针对油藏开发的技术难点提出了相应的技术对策和建议,为塔河油田超深超稠油油藏高效、经济开发指明了攻关方向。

The ultra-deep and ultra-heavy oil reservoirs of the Tahe Oilfield often experience problems with artificial lift.Specifically,they face insufficient deep sucking,frequent string fractures,high costs in heavy oil diluting and thinning in wellbore,and a high failure rate with the down-hole pump.These problems are complicated by the nature of the reservoirs,referred to as ＂two ultras and five highs＂.In order to overcome the problems,relevant techniques were developed.They included a large belt driving pumping unit,large displacement pump,load reducing and deep pumping technology and a high-temperature and heavy-oil tolerant electrical pump,forming technologies like light oil mixing gas lifting,heavy oil composite lifting,and heavy oil screw pump lifting.In addition,we proposed corresponding measures to overcome the main challenges encountered in reservoir development.In the end,we used our findings to improve efficiency to contribute to the successful for efficient and economic development of reservoirs in the Tahe Oilfield.