单螺杆马达带单螺杆泵分注总成匹配研究.pdf

石油机械
2014年第42卷第3期
CHINA PETROLEUM MACHINERY
油气田开发工程
单螺杄马达带单螺杄泵分注总成匹配研究
李增亮石白妮鲁住琪陆胜楠成茜
(!.中国石油大学(华东)2.中石泊西南管道公司3.海洋石油工程(青岛)有限公司
摘要:目前我国分层注水工艺存在工作原理及结构复杂、分层注水管柱工艺繁琐等问题。为
此,提出了一种新型井下螺杆驱动型分层注水系统。该注水系统采用螺杆马达驱动螺杆泵,动力
液利用分流器分流,分别进入马达与泵,运转时马达降压,泵增压,分别注入不同油层。对螺杆
泵与马达匹配的原理及方案进行了研究,得到了整个系统匹配的详细计算过程,同时设计了匹配实
例,得到了1:2头螺杆泵与2:3头螺杆马达的合理匹配参数。实例中,随着泵压由0.70MPa增大到
4.20MPa,马达压降由0.89MPa増大到5.36MPa,机组的总长度由2.057m增加至9.092m。
关键词:单螺杆马达;单螺杆泵;分层注水;匹配
中图分类号:TE934文献标识码:Adoi:10.3969/j.isn.1001-4578.2014.03.022
Research on the Separate Injection Assembly Matching for
Single Screw Motor with Single Screw Pump
Li Zengliang Shi Baini Ll Jiagi'iu Shengnan'cheng Xi
1. China University of Petroleum, ingdao 2. Petrochina Southest Pipeline ompany 3. shore Petroleum Engineering o
Ltd, Qingdao
Abstract: There are some problems in domestic layered water injection technology, such complex operaling
principle and structure, and tedious layered water injection string technology. Therefore, a new type of downhole
screw-driven layered water injection system was formulated. The system adopts screw motor to drive serew
bump. The power fluid uses shunt to conduct diverting, entering motor and pump respectively. In running the motor
pressure decreases and the pump pressure increases. The fluid is injected into different oil layers respectively. Re
search on the principle and scheme of matching motor and pump was conducted, obtaining the detailed caleulation
process of the overall system matching. Meanwhile, the matching example was designed, obtaining the reasonable
matching parameter for 1: 2 thread screw pump and 2: 3 thread screw pump. In the example, when pump pressure
increases from 0. 70 Mpa to 4. 20 Mpa, and the motor pressure decreases from 0.89 Mpa to 5. 36 Mpa, the overall
unit length increases from 2.057 m to 9.092 m
Key words: single screw motor; single screw pump; separate layer water injection: matching
酸化等工艺。向油层注入满足一定水质标准的清水
或污水来补充底层能量,是实现油田增产和改善开
发的有效方法2。
随着油田的不断开采,地层压力随之降低,开
我国大部分油田油层层间、层内渗流特性差异
发难度也越来越大。为了解决这一问题,相继制定显著,采用笼统注水工艺已经无法适应油田开发的
了多种油田增产措施,例如注水、热力采油、压裂需求的。根据不同油层的特点和差异进行分层注
x基金项目:中石化股份公司科研攻关项目“水力自动调节能注水技术”(P12133)。