formation damage

At the same time, effects of various factors on productivity are further studied, including horizontal well length, gas reservoir thickness, gas reservoir anisotropism and formation damage, and correspondent inflow performance relationship ( IPR) curves are plotted.

依此进一步研究了水平井段长度、气层厚度、地层各向异性及地层损害等因素对产能的影响，作出了相应的流入动态关系曲线。

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To prevent the formation damage induced by asphalting precipitation is one of the technical difficulties during development and production of heavy crude oil reservoir in the Bohai Sea.

防止沥青质沉积造成的储集层损害是渤海稠油油藏开发生产中遇到的技术难题之一。

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But the methods of clinical treatment to OA includes reducing articular pains, improving articular function and replacement of joint, in short of effective methods to control and treat the key of OA ( cartlage damage and osteophyte formation).

然而，临床上对OA患者的治疗，主要是缓解关节疼痛、改善功能以及人工关节置换术，目前尚缺乏从根本上控制和治疗OA的关键（软骨破坏和骨赘形成）的有效方法。

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Problems such as cuttings transportation, wellbore failure, cuttings bed building, friction drag and torque control and formation damage potentially exist in this well.

该井钻井液存在携砂困难、井壁易失稳、易产生岩屑床、摩阻扭矩控制难度大、储层易受污染等技术难点。

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If skin factor of formation damage is more , its radius of investigation is less.

井底附近地层渗透率降低比改善对调查半径的影响要大.

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Invasion of drilling fluidcompletion fluid causes clay swelling and fines migration, which leads to formation damage.

钻井过程对储层的损害,主要是粘土膨胀和微粒运移造成的.

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Adding 1-2 % of PF-BPA should be commenced before entering pay zone to minimize formation damage.

进入油层前就在泥浆中加入1～2%的PF - BPA,以减少地层的损害.

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Underbalanced drilling technology can increase ROP and decrease formation damage, so it is increasingly used worldwide.

欠平衡钻井技术可以降低地层损害、提高机械钻速, 所以在世界范围内被逐渐采用.

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Laboratory research shows that the JJ? 8 and JJ? 9 agent can reduce the alkalinity of the liquid and degree of formation damage made by the liquid, and raise steam injection efficiency.

室内研究表明，JJ-8和JJ-9降碱剂可有效降低蒸汽凝析液的碱度，减轻蒸汽凝析液对地层的伤害程度，提高注汽效率。

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Development of a novel low formation damage kill fluid LW

一种新型低伤害压井液LW的研制

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Two new programs for formation damage evaluation are also described.

同时介绍了两种新评价程序：地层损害评价实验程序（使用动滤失仪CDFC）；

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Study of the formation damage factors of Xinyang gas field in Western Sichuan

川西地区新场气田储层伤害因素研究

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Little experience on the formation damage caused by the produced-water reinjection in domestic offshore oilfields accumulated.

国内海上油田回注产出水的工作起步较完,对产出水造成的地层伤害及补救措施经验不足.

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Evaluation of formation damage by capillary pressure data obtained with high pressure semipermeable membrane method

应用高压半渗透隔板法测得的毛细管压力数据评价地层伤害程度

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Formation damage can be prevented by reducing differential pressure, using aerated drilling fluid, choosing the lowest over balance pressure or reducing the interface tension of gas and water.

采用减小生产压差、应用气体或含气钻井液、合理选择最小过平衡压力或减小气水界面张力的方法，可以预防和减轻地层损害。

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The radius of investigation for formation damage has been formulated in this paper.

调查半径与地层损害的程度及范围有关,文中得到了地层受到损害时的调查半径.

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Inverse Problem Model of Partial Differential Equation of Formation Damage and Research of its Numerical Algorithm

地层伤害偏微分方程反问题模型及计算方法研究

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Chemical prevention and treatment of formation damage caused by steam huff and puff

化学剂抑制及解除蒸汽吞吐中的油层损害

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Aimed at the model formation damage, specific technical countermeasures are proposed.

针对漏失性储层损害模式, 提出了具体技术对策.

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Mechanism and evaluation of formation damage induced by deposition and adsorption of crude asphaltene

原油沥青质沉积和吸附引起储层损害的机理及损害程度评价

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It can prevent loss, collapse and formation damage and the compatibility is good.

超低渗透钻井液防漏 、 防塌、防地层损害效果以及配伍性均较好.

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The selection of rheological test condition, friction property, proppant carrying capacity and formation damage etc.

重点讨论了压裂液流变试验条件的选择 、 降阻性能 、 携砂能力和保护储层技术.

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The boundary element method of pressure behavior model of lateral drilling and formation damage evaluation

侧钻井压力分析的边界元法及储层伤害的评价

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Evaluation and control of formation damage induced by crude asphaltene precipitation

原油沥青质沉积引起储层损害的评价与控制

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Reservoir exist strong formation damage of water sensitivity, salt sensitivity and alkali sensitivity and so on.

储层存在较强的水敏损害 、 盐敏损害、碱敏损害等.

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The influence of temperature, pressure and shear rate on formation damage are also discussed.

讨论了温度 、 压力、速度梯度对保护储效果的影响.

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It was shown by practical example that high connate water saturation had considerable effect on well test analysis results, greatly lowering the explained permeability and amplifying formation damage of gas wells.

结果表明：较大量共生水的存在，将对试井解释结果产生较大影响，引起渗透率的较大降低和加深对气井储层的伤害。

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Evaluation on Formation Damage by Well Operation Fluid in SZ 36-1 Oil Field

绥中36&1油田油井工作液对储层的损害评价

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The theory proposed by Kumar, which is on how the suspending fines block the formation pores was applied to calculate the formation damage skin factor because of asphalt deposition.

采用Kumar等人关于液体中悬浮颗粒对油层堵塞的理论来计算沥青沉积所引起的地层伤害表皮因子。

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MEG drilling fluid had better formation damage control. WEN 5-41C had a 14. 4 t BOPD and this was greater than that of WEN 5 BLOCK by 128. 4%. SHEN-128C well is a unique gusher well in the SHEN 229 BLOCK presently.

油层保护效果好，其中温5-41C井日产油14.4t，同比温五区块平均产量提高了128.4%，神218C井是神229区块目前唯一的自喷井。

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