新疆油田滴20井区八道湾组油藏为典型的低渗透油藏.采用注水开发后,注入水窜严重,油井含水上升速度快,储量动用程度逐年下降,在此情况下,急需调驱调剖技术改善油藏水驱油效率.在系统分析油藏生产动态的基础上,建立油藏数值模型,采用化学驱数值模拟新技术和3dsl软件,通过改进流线法MSL技术、追踪流线,结合含水率定量表征优势渗流通道.通过软件定量优势渗流通道的描述,根据流线数值模型,计算出每个井组的优势渗流通道体积,从而定量计算调剖剂用量.利用化学驱数值模拟技术针对不同段塞进行方案优选及增油效果预测.新方法体现了油藏数值模拟与调驱调剖工艺的有机结合,是调剖调驱设计及效果评价与预测的新方向.

In Luliang Oilfield,the injection pressure is high and the injected water volume is low during the oilfield development.It is proposed that a kind of the monolayer solution with cationic group could be used to solve this problem.Monolayers is in aqueous solution as the delivery medium,electrostatic interactionis the driving force,it deposites on the negative power of the rock surface,changes the nature of the surface reservoir,peel water film,prevents clay swelling and migration,thereby it can enhance the penetration of water phase,reduce water pressure,ultimately reduce pressure and augment injection.Laboratory experiments and oilfield application indicate that this technology can be used to increase the ability to absorb water of injection wells in Shinan 21 Area of Luliang Oilfield,improve water injection effect.

The longitudinal reservoirs are many in Luliang oilfield. For the limitation of present production technology, only one layer is produced. The two-layered selective zone production technology was studied to improve the production of the difficult-to-produce reserves and avoid interlayer interference of commingling production. The packer was used to separate the two layers. The hollow rod not only links the special sucker rod pump to the pump units, but also is passage of production liquid of the deeper layers. The annulus between the hollow rod and the tubing is another passage of the above layer. In this paper, the production mechanism was introduced, the separate-output pump was developed, and the matching string was designed. Moreover, the wellhead equipment was improved and the wax removal technology was matched. The filed application of 9 wells showed that the single-well production was enhanced by 4.7t/d and the water cut dropped. This new technology could prevent the interlayer interference and measure the production and the water cut of each layer, which provided theoretic gist for reservoir operating management. And this new technology is a good reference to exploit the similar two layer reservoir.

针对油田生产油气处理环节,利用处理站DCS监控数据,结合油气处理经验与理论建立专家知识库,采用实时数据库,建立油气处理实时数据分析诊断预警系统。该系统采用B/S结构,以交互式预警方式展示,对参数、设备和流程进行不同层次和不同方式的分析与报警,应用推理方法和统计技术,实现了实时预警以及对油气处理生产过程的全方位掌控。应用证明,该系统对油田油气处理站安全,油气处理经验共享,油气处理工艺参数优化,发挥了重要作用。提高了事故预防、处理的响应速度,取得了较好的应用效果。

More oil layers developed vertically in Luliang Oilfield, and interlayer interference is more serious, which is affected byoil layer physical property and pressure difference. To further enhance oil recovery and avoid interlayer interference, pump series aredeveloped for separate zone production. Strings for separate zone production, the paraffin removal process and the gauging procedureof are designed successfully. The new technology has been improved continuously and has been used to 20 wells for field test. The oilproduction increases by 3.2×104 t, and the cycle time of pump inspection is prolonged for more than one year. This technology providesan effective method for the production enhancement of low pressure and low water cut oil layers in the multilayered reservoir.

常规的油水井堵漏剂存在的一个最大问题是由于强采强注引起动态冲蚀破坏,造成了封堵失效、施工有效期短,现场实践表明油水井封堵层的失效往往不是封堵层本身的强度不够,而是与周围界面不能形成良好的胶结,即胶结强度不够。介绍了新型堵漏剂XP-1的性能及其在封堵油水井管外窜槽中的作用,通过室内和目前油田常用的水泥类封堵剂进行的性能实验及对比研究,证明其具有良好的驻留性和修补受损界面的"自愈"性能,模拟实验显示封堵强度明显提高。2006～2007年对陆梁油田发生套管破漏及管外窜的12口油水井进行封堵试验,10口封窜井经变密度测井,封窜效果良好,工艺成功率100%;2口堵漏井经12～15MPa加压试验合格,工艺成功率100%。该封窜堵漏工艺技术既可大修作业,也可小修施工,工艺适应性强,具有很好推广应用前景。

By investigating the corrosive scalling status of downhole production string of pumping wells in Luliang Oilfield,the scalling factors of production string,indoor anticorrosive and scale prevention formula were studied.From the anticorrosive and scale prevention technical system,the optimized formula which is adaptable for Luliang Oilfield was chosen.The experiment plan was also made.By field experiment,the technical plan was optimized and the technical system with HEDP scale inhibitor and KL-601 modified corrosion inhibitor was established.By dynamically tracing the single well anticorrosive and scale prevention result,the protection period was optimized.The field experiment and industrial practice showed that the anticorrosive and scale prevention process can satisfy the production requirements,which sharply shorten the checking period of pumps.

在实验室条件下,通过试验考察温度、破乳剂浓度、压裂液浓度等因素对石南21井区压裂井产出原油的破乳和脱水的影响,从而找出最佳的破乳方法。试验结果显示,在压裂井产出的原油对原油破乳影响因素加大,通过化学和物理联合破乳脱水可以极大地提高破乳效果,缩短破乳时间。

In the development of the thin oil reservoir with bottom water, the phenomenon of bottom water coning easily occurs because of the sufficient energy of the bottom water, which will leads to the bad development result of the thin bottom-water reservoir. The bilayer well completion-water drainage-oil production technology can inhibit the bottom-water coning to tap the productive potential of the reservoir and improve the development result of it. Based on the principle of the technology and the reservoir parameters of K 1h 2 3 reservoir of Hutubihe Formation in Lu9 well block of Luliang Oilfield, the influence of the impervious interbeds on the water drainage-oil production performance is researched under the condition of ideal single well model using reservoir numerical simulation technique. The numerical simulation results show that the effective baffle plate can inhibit the bottom water coning, but there is a certain relationship between the size of the baffle plate and the scale of the water drainage. The results in this paper have a reference for the development of similar reservoirs.

Water coning is the main reason which results in the bad development effectiveness of the thin oil reservoir with bottom water.Dual completion drainage and production can liberate the production potential of the reservoir.At the base of the technique's fundamental and associating with the reservoir parameters of Hutubihe K1h23 reservoir in Lu9 borefild of Luliang Oilfield,applying with numerical reservoir simulation technique have researched the influence of the permeability of water/oil bed on drainage and production under the condition of ideal single well model.The results have a guide intention for the similar reservoir's development.

应用油藏数值模拟技术,对陆梁油田陆9井区呼图壁河组K1h2 3油藏进行了全油藏和井组模拟.在建模时对主要生产层位进行了细分层,以较准确的描述油气水分布和注采对应关系.通过对全区及各单井主要指标的生产历史拟合,修正了地质模型和生产动态模型,更好地反映了该油藏的非均质性,进一步认识该油藏水驱油运动规律及剩余油分布特征.在此基础上,结合地质油藏工程研究成果,对薄层边底水油藏的开发方式、采油速度、合理产液量、合理压力保持程度、合理注采比等开采技术政策界限进行了研究.确定了该油藏应立足于注水开发,平均单井合理产液量约为20m3/d,合理采油速度应控制在1.6%,合理注采比为0.8左右,合理压力水平应在9.5Mpa以上.应用该数模研究成果,对油藏开发参数进行优化,油藏各项开发指标得到有效控制,并取得了良好的生产效果,油藏连续两年实现高产稳产,综合含水稳中有降,油田递减趋势明显减缓,区块地层能量得到恢复,预期采收率可提高3个百分点.

K_1h_23 reservoir and the well group of Hutubihe group in Lu 9 Well field of Luliang oilfield are fully simulated with the application of numerical reservoir simulation technology. When modeling, the main production horizons are subdivided. It describes the relationship between oil-gas-water distribution and injection-recovery accurately. Through fitting producing history of primary indices to the whole area and each single well, the geological model and production performance model were modified. It reflects the reservoir heterogeneities so better that the movement law of the reservoir and remaining oil distributional characteristics are known further more. On this foundation, we carried out researches on the exploration technical policy limit such as side bottom water in thin layers, development mode, oil recovery rate, reasonable liquid-producing capacity, reasonable pressure maintenance level and reasonable injection-production ratio, etc. according to the research production of geologic petroleum reservoir engineering. The research production of numerical simulation was used to optimize the operational parameters of oil reservoir. Each development index of the reservoir was controlled effectively, and favorable production effect was achieved.

计算机技术、信息技术和网络技术的发展为油田自动化注入了生机和活力.在新型油田自动化系统中采用了JAVA和WEB技术,使油田自动化系统成为构建全厂信息平台的桥梁.在基础层,工业PC代替PLC已经成为低成本控制系统的主流,智能仪表替代传统仪表成为一种趋势,现场总线技术的应用使DCS控制系统发生了根本性变化.在链路层,利用"管控一体化"工业控制网络,实现了企业"管"、"控"数据流之间的紧密连接.工业控制网络向有线和无线相结合的方向发展,控制网络技术向高速交换式以太网技术发展.在应用层,自动化实时数据的应用更加广泛和深入,实时数据由单纯的监控动能向ERP、GIS系统中融合,已经成为新型油田自动化系统的本质特征,油田生产管理水平发生了质的变化.