长6油层是华庆油田主力产层,属典型的超低渗透油藏,储层物性差、开发难度大.水平井开发技术的应用,有效提高了该油藏的平均单井产量.但在实际开发过程中,很多水平井出现产量明显下降的现象.为治理这些低产水平井,文章从华庆油田长6油层储层地质特征出发,论证了油层酸化工艺的可行性,进而结合油井生产动态等因素,设计并优化了水平井油层酸化工艺.主要进行了酸液体系的优选、酸液配方的优化、酸化工艺参数的设计与优化、酸化工具与管柱组合的设计等研究工作,并在现场进行了试验应用.边应用边优化改进,实施井增产效果较好,对华庆油田长6油层水平井常规增产挖潜工艺进行了有益探索与实践,初步形成了华庆特色的水平井油层酸化工艺,为华庆油田开发与稳产提供了有力支撑.

随着信息化、智能化技术不断发展,智能检查机器人技术日新月异,并在电力能源行业得到广泛应用,油田各类站点仍采用人工巡检方式,主要存在员工劳动强度大,工作效率低,巡检精确性、实时性差和恶劣天气下巡检存在安全隐患等问题.本文主要通过研究场站智能巡检机器人,利用自主激光导航、跑冒滴漏检测、温度声音探测、仪表阀门识别、自主寻桩充电等技术,实现站点智能巡检,取代人工巡检模式,减轻员工的劳动强度和安全风险,提高智能化工作站管理水平和生产组织效率.

元284区暴性水淹水平井见水方向判识最常用的方法为动态验证法,但其存在实施周期长、现场不确定因素多、找水准确率低的问题,开展新技术试验,借助井下高精度压力计来增强井口压力变化识别灵敏度和数据录取连续性,人工激动油井井口压力、监测相邻一、二线注水井井口压力响应情况,现场试验1口,成功识别了水淹井见水方向.

针对普通Al-Zn-In阳极材料随着温度升高电化学保护效果变差的问题,添加Sn、Mg、稀土等合金材料,研制出耐温阳极材料,使其表面均匀溶解,电流效率提高了19％根据油井套管内防腐精准度的需要,利用新型阳极材料研制出一种可随油管入井而保护套管的耐温牺牲阳极短节,配套简便,由井下对比试验可知其防腐效果明显.

To address the issues of hydraulic operation in horizontal well like low impact force of reverse cir-culation and poor fluid carrying capacity of normal circulation, and to improve the operating efficiency of hydraulic circulation , the normal and reverse continuous circulating device for horizontal well has been developed. The device utilizes the hydraulic pressure to balance the wellhead self-sealing rubber outer surface and inner surface to maintain a self-equilibrium state, achieving mechanical and hydraulic dual compensation self-sealing to significantly enhance the sealing effect of the rubber, resulting an extended life. The device could achieve normal and reverse circulation during continuous circulation process with simple operation and less time. It facilitated changing the impact force and flow back rate by displacement through the device. The device has been successfully applied in two sand wash-ing tests in Changqing Oilfield with the average lateral length of 600 m and sand washing footage of 332 m. An in-creased production of 1. 98 m3 has been achieved after sand washing. A shortened construction period of 6.1 d, a faster ROP of 32 m/h and an increased flowback rate of 57.6% has been attained by using the device compared with stopping the pump and connecting the pipe.

游梁式抽油机作为主要的采油设备在各大油田广泛使用，随着油田开发的不断深入，油井产量降低、含水上升，机采设备能耗上升。另外，游梁式抽油机生产参数调整困难，无法实现油井生产的供排协调，导致抽油泵效及机采系统效率总体偏低。长庆油田采用游梁式抽油机与“一拖多”转子变频调速技术相结合的措施，在36个井组200余口油井上进行了试验应用，降低了采油系统能耗，提高了机采系统效率。

1改造前现状 1.1生产情况 元东二转建于1993年10月,隶属于元城作业区庆101管理单元,进站油井19口,日集输含水原油200m3,含水率77.5％.来油经总机关进入缓冲罐,再经外输泵增压,燃油加热炉加热后进入外输管线输至下游站,流程繁琐,能耗高,系统运行效率低于40％. 该站外输加温主要采用的是真空加热炉加温,燃烧设备采用的是原油燃烧机,能源消耗量大,能量利用率低.

针对低压低渗储层开发的自生气压裂液中气体生成速度控制难的问题,将微胶囊技术引入到该体系中,开发了一种由高分子化合物为主剂、混合溶液构成的,具有较好成膜性能的溶液包裹囊芯微胶囊.室内评价了该胶囊添加荆的释放率、缓释性能、与配套压裂液的配伍性等.该胶囊制备工艺可行、性能良好,研制成功后进一步完善了自生气压裂液体系,拓宽了自生气压裂液适用范围.

在了解钠土-聚合物复合调剖体系(PL调剖剂)基本性能的基础上,通过室内实验考察了PL复合调剖体系的封堵能力、突破压力及突破压力梯度、耐冲刷能力和剖面改善率,评价了其在多孔介质中的调剖效果,进一步明确了影响PL复合调剖体系调剖效果的因素,为优化调剖体系提供了理论依据.

The multi-unit energy-saving control device is a set of energy-saving electrical unit, intermittent oil production, pumping energy balance changed moment in one integrated unit of energy-saving devices. The device is not only good energy-saving effect of increasing oil production, while real-time access to the pump "indicator diagram," in a timely manner to understand the underground working conditions, failure to facilitate the diagnosis and management of oil wells. The multi-unit energy-saving device to control oil fields is the most effective and advanced energy-saving devices unit, the unit is the past, other energy-saving device alternatives.