稠油生产井在冲砂、堵水、蒸汽吞吐等措施作业中需多次起下管柱,存在措施成本高、生产时率低的问题。为此,结合现场实际需要,研制了投球式多功能抽油泵。在常规管式抽油泵的基础上,研制了开放式固定凡尔总成,对滑块套、支撑弹簧、固定凡尔座等核心部件结构进行优化设计,形成了3种规格的投球式多功能抽油泵。投球前带泵管实施油井相应措施,措施后投入固定凡尔球,下抽油杆及活塞即可直接转抽生产,省略了起管柱再次下泵这一作业环节,满足了油井注汽、冲砂、堵水等工艺一次管柱完成的现场需求。该工艺累计应用29井次,成功率为100%。投球式多功能抽油泵可有效简化作业施工工序,降低作业成本,提高油井生产时率,可为稠油油井高效生产提供技术支持。
Multiple trips of the pipe string during sand flushing, water blocking, steam huff and puff, et al. of the heavy oil production wells lead to the problems of high cost of measures and low production rate. To this end, a ball-actuated multifunctional oil pump is developed in consideration of the actual needs of the site. On the basis of the conventional tubular oil pump, an open fixed valve assembly was developed, and the structure of the core components such as the slider sleeve, the support spring, and the fixed valve seat were optimized and designed to form three types of ball-actuated multifunctional oil pumps. Before the ball is actuated, the pump pipe is used to implement the corresponding measures for the oil well. After the measures are implemented, the fixed ball is actuated, the sucker rod and piston are run in, and the pump can be directly transferred to production, which makes the operation link of pulling up the pipe string and running the pump again omitted, and meets the on-site requirements of one-time pipe string completion for oil well steam injection, sand flushing, water blocking and other processes. This technology has been applied for 29 well times in total, with a success rate of 100%. The ball-actuated multifunctional oil pump can effectively simplify the operation and construction process, reduce the operation cost, improve the production rate of oil wells, and provide technical support for the efficient production of heavy oil wells.
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