目前,吐哈油田老区块地层压力持续降低,压裂液返排困难;致密油气藏等非常规资源储层孔喉直径小;结合室内实验和现场实验,对新型低聚物压裂液进行研究,形成一套适合吐哈油田地层特点的压裂液配方体系.新型低聚物压裂液破胶后无残渣,易返排,成胶pH值为中性,对地层伤害小,成本低,与植物胶类压裂液相比,具有明显的性价比优势.现场实验表明,该压裂液体系的成功应用,为油田增产增注提供了可靠地技术保障.

三塘湖油田牛圈湖区块西山窑组油藏为特低渗、低压、低流度的"三低"砂岩油藏,在开发初期存在注水开发效果差、产量低等问题.为了提高注水开发效果,通过生产动态统计分析、油藏工程和数值模拟方法研究,重新界定了注水技术政策界限,实施超前温和注水,同时论证了合理的井网井距,实施井网加密调整,并刻画出有利建产区,实施滚动建产.通过一系列对策实施,牛圈湖区块西山窑组油藏注水开发状况逐步好转,直井开发区地层压力保持平稳,含水率控制在55％以内,产油量自然递减率下降到10％左右,采油速度最高达1.04％,目前仍保持在0.70％以上,产油量保持稳定,预测牛圈湖区块西山窑组油藏南区和东区的采收率分别为24.5％和18.1％,好于开发方案标定的18.0％.

涂层附着力是环氧涂层外防腐套管的一项重要性能指标,其质量直接影响外防腐套管的使用寿命,因此进行附着力检测是在生产现场十分重要的质量检验手段从附着力检测方法介绍入手,通过不同附着力检测方法分析及现场测试比较,确认了划X法适合于现场检测外防腐套管附着力检测,对提高环氧涂层外防腐套管的附着力检测准确度有积极意义.

采用光谱直读光谱仪测定金属材料的化学成分存在一定的误差,造成误差的原因有很多方面,系统误差是无法消除的误差,只能采样方面改进,但无法消除.金属材料检验前对仪器的完全标准化和类型标准化都是减小系统误差的方法,就是采用不同控样类型标准化后测定的试样化学成分数值的统计研究,分析不同化学成分的控样在类型标准化后对试样化学成分测定的影响.

通过模拟曝气气浮除油试验装置，采用气浮收油-混凝沉降-压力过滤工艺研究了气水比、混凝药剂加量对除油效果的影响，也对气浮工艺对溶解氧和其他水质的影响进行了试验，结果表明：空气和污水流量比率越高，污水在罐中的停留时间越长，气浮除油效果越好，其含油去除率达到80%以上；气浮工艺中投加混凝剂能够显著提高气浮除油效果，经过反复实验对气浮工艺条件进行优化后，其污水含油去除率完全可以达到95%，曝气气浮除油技术工艺在显著提高污水含油去除率的同时，还能对污水中的Fe2+和硫化物起到一定的预氧化作用。

Low carbon steelpipelineperforationfailureis a seriousprobleminoil fieldandwillhave an extremelynegative impact on the normal production of oil field.In this paper,the reasons forthe failureoflow-carbon steelpipelineperforation were analyzed experimentallyand drawthe relevantconclusions.

Study on new technique of low sludge sewage treatment of Zhongyuan oilfield,the results showed that:Inorganic salt conditioner broke the balance of CO2 and HCO3-, reduce the content of HCO3-in water treatment system, Control the main fouling reaction of outputting water, what can prolong the use cycle of water treatment equipment; The sewage are improving by dealing with “New technique of low sludge sewage treatment”,the amount of sludge is 31.89%lower than that at present.

针对温西六区块在井网加密滚动调整后出现的主力层单一,并严重水淹、产量大幅度下降等问题,寻求一种新的方法来解决上述出现的开采矛盾.在借鉴国内外砂岩油田周期注水经验基础上,有效利用油藏数值模拟技术,从实际出发,对温西六区块实施周期注水的可行性进行了研究,优化了注水周期参数,论证了周期注水时机,提出了周期注水具体实施方案,并经现场检验取得了较好效果.

The main developing problems in Wenxi No.6 block in Shanshan Oilfield have been analyzed by the studies of reservoir description,geology,digital model as well as logging,according to the research achievements of the reservoir description and geology studied with the deposition micro-faces achievements.The necessity and possibility have been proved with restudying the geology,dynamic production data,various monitoring information,and combining static and dynamic data in current well pattern.How to carry out the total project and adjust object and target have been confirmed.Three sets of the well pattern thickening adjustment schemes have been worked out and development index has been predicted.The good development effect in site has been achieved by the selected plan through the balance and optimization both in technical and economic index.

The main characteristics of low permeability reservoir are small reservoir pore,fine throat,high seepage resistance and low water intake capacity.Deliverability and water intake capacity of oil well are very low.The fluid flow in formation is influenced by capillary force and Jamin action,so threshold differential pressure is high in most water flooding well,which needs high water flooding pressure,it's hard to meet the requirement of water injection allocation.During water-flooding the low permeability oilfield,there are many insufficient water injection wells,the effect of conventional acidizing,fracturing and increasing flooding is not noticeable.In particular,pressure diffusion is so difficult in II and III type of reservoir that effective driving pressure gradient is very hard to build.In order to increase driving pressure gradient,improve water intake capacity of II and III reservoir and boost the producing degree of the reserve,overpressure water flooding technical countermeasure experiment is worked out and implemented.After the first and the second water injection by increasing pressure,good effect has been obtained.

文南油田断块多,地层复杂,稳定性差,易坍塌掉块;大部分区块含大段膏泥岩,易造浆,钻井液维护困难;地层压力层系较为紊乱,沙二下至沙三中大都含异常压力层,易涌易漏;钻井施工中"喷、漏、卡、塌"等事故频发,严重制约钻井速度的提高.通过应用固相清除技术、井壁稳定技术、随钻防漏技术等多项钻井液技术,效果显著,有效保障和促进了该地区钻井速度的提高.