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裂缝应力敏感性
相关语句
  fracture stress sensitivity
     Through studying it is shown that the principal damage mechanism of Penglaizhen Formation gas reservoirs is water locking damage besides which there are still relatively strong alkaline sensitivity,water sensitivity and fracture stress sensitivity and it is also expressed as the water locking damage of the filtrate of working fluid and its solid intrusion damage in the processes of drilling and completing.
     研究结果表明 ,蓬莱镇组气藏主要损害机理为水锁损害 ,同时还具有较强的碱敏性、水敏性和裂缝应力敏感性 ,钻井完井过程中主要表现为工作液滤液水锁和固相侵入损害。
短句来源
  “裂缝应力敏感性”译为未确定词的双语例句
     Finite-element analysis demonstrates that the fracture width of borehole wall is from 200 um to 350 urn when positive pressure difference in drill-in process is 3 MPa. Take the stress sensitivity of fracture into consideration; fracture width is up to 400 - 700 um, which is in accord with the result computed by loss model.
     裂缝宽度有限元预测表明,当正压差为3MPa时,井壁裂缝宽度分布在200~350μm范围内,考虑漏失时的裂缝应力敏感性,裂缝宽度可达400~700μm,与漏失模型计算结果一致。
短句来源
     the new assessment method of fractures stress-sensitivity, been showed in drilling and well completion's opinion, which has been used for evaluating the reservoir stress sensitivity. Experiment results indicate that stress-sensitivity of block core is weak or middle, stress-sensitivity of cores with single nature fracture is middle, that of cores with single artificial fracture is strong, and the stress-sensitivity of cores with two artificial fractures is the strongest, Meanwhile, the fractures are opened much easier than them be closed.
     从钻井完并的角度对裂缝性储层应力敏感性的评价方法进行了有益的补充,并结合应力敏感系数法对裂缝和基块岩样进行了应力敏感性评价,结果表明,单条天然裂缝应力敏感性为中,人工单缝为强,组系缝应力敏感性要强于人工单缝,基块应力敏感性为弱-中等。
短句来源
     In this paper,elastic-plastic contacting model for natural rock fractures is built on the base of microscopic B&S contacting theory.
     基于Brown&Scholz粗糙面接触理论,从细观上建立了裂缝面弹塑性接触模型,并依据此模型进行了裂缝应力敏感性分析。
短句来源
  相似匹配句对
     fissured reservoirStudy on the stress sensitivity of fissured reservoir
     裂缝性储层应力敏感性研究
短句来源
     Evaluation on stress sensitivity of the low-permeability fractured reservoirs
     低渗透裂缝性储层应力敏感性评价
短句来源
     Experimental study on stress sensibility of fractured reservoir.
     裂缝性储集层应力敏感性实验研究
短句来源
     STUDY ON VISUALITION FOR STRESS SENSIBILITY OF FRACTURE WIDTH IN RESERVOIR
     储层裂缝宽度应力敏感性可视化研究
短句来源
     Experimental Study on Stress-Sensitivity of Fracturing Formations
     裂缝性储层应力敏感性实验研究
短句来源
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Penglaizhen Formation gas reservoirs of Jurassic in West Sichuan Basin belong in the shallow low permeability sandstone ones and their reservoir characteristics and damage mechanisms are of typicalness and representativeness in the congeneric gas reservoirs in China.Their reservoir damage mechanisms and degrees were systematically discussed and evaluated by the authors by use of modern core analysis means and a series of simulating experiments.Through studying it is shown that the principal damage mechanism...

Penglaizhen Formation gas reservoirs of Jurassic in West Sichuan Basin belong in the shallow low permeability sandstone ones and their reservoir characteristics and damage mechanisms are of typicalness and representativeness in the congeneric gas reservoirs in China.Their reservoir damage mechanisms and degrees were systematically discussed and evaluated by the authors by use of modern core analysis means and a series of simulating experiments.Through studying it is shown that the principal damage mechanism of Penglaizhen Formation gas reservoirs is water locking damage besides which there are still relatively strong alkaline sensitivity,water sensitivity and fracture stress sensitivity and it is also expressed as the water locking damage of the filtrate of working fluid and its solid intrusion damage in the processes of drilling and completing.Finally,relevant suggestions for protecting reservoir from damage are proposed in the paper.

川西侏罗系蓬莱镇组气藏属于浅层低渗砂岩气藏 ,其储层特征和损害机理在国内同类气藏中具有典型性和代表性。文章通过现代岩心分析手段和系列模拟实验较为系统地探讨和评价了其储层损害机理和损害程度。研究结果表明 ,蓬莱镇组气藏主要损害机理为水锁损害 ,同时还具有较强的碱敏性、水敏性和裂缝应力敏感性 ,钻井完井过程中主要表现为工作液滤液水锁和固相侵入损害。文章最后提出了相应的储层保护建议

Tight gas sands have potential damage of stress sensitivity due to its fractures development and high effective stress,and the drill-in fluids and condensate water near borehole can also affect stress sensitivity,which prevent economical development of reservoirs.Considering the effects of fractures and water saturation on stress sensitivity of tight gas sands,experiments of stress sensitivity were conducted under pressure repetitive increasing and lowering,and various water saturations that are lower than irreducible...

Tight gas sands have potential damage of stress sensitivity due to its fractures development and high effective stress,and the drill-in fluids and condensate water near borehole can also affect stress sensitivity,which prevent economical development of reservoirs.Considering the effects of fractures and water saturation on stress sensitivity of tight gas sands,experiments of stress sensitivity were conducted under pressure repetitive increasing and lowering,and various water saturations that are lower than irreducible water saturation with dry core sample,tight gas sandstone matrix and man-made fractured cores from Ordos Basin.And the effects of water saturation and fractures on stress sensitivity of tight sandstones were investigated by capillary flow model and chemical compaction theory.The results suggest that the severity of stress sensitivity is linear inverse correlation with permeability of matrix,and linear positive correlation with logarithm of the permeability of fractures. Water saturation and fractures strengthen the severity of stress sensitivity,and the severity increases with water saturation increasing.

致密砂岩气藏裂缝发育和有效应力高的特征使其易发生应力敏感性损害,钻井完井液侵入或凝析水在近井地带聚集也将影响砂岩应力敏感性,这些因素都会对致密砂岩气藏的经济开发产生影响。考虑裂缝和含水饱和度的影响,选取鄂尔多斯盆地上古生界典型致密砂岩岩样,分别用干岩样、人工造缝岩样和含水饱和度低于束缚水饱和度的岩样进行了致密砂岩基块与裂缝的应力敏感性实验,并从岩石学特征入手,利用毛细管渗流模型和化学压实等理论分析了裂缝和含水饱和度对岩石变形的影响,探讨了致密砂岩应力敏感性损害机理。研究结果表明,致密砂岩应力敏感性损害严重,应力敏感性系数与基块渗透率线性负相关,而与裂缝岩样渗透率的对数线性正相关;水的存在加剧了致密砂岩应力敏感性程度,且含水饱和度越高应力敏感性越强。

Strong stress sensitivity is an important character of fractured reservoirs and will affect exploitation project.In this paper,elastic-plastic contacting model for natural rock fractures is built on the base of microscopic B&S contacting theory.With this model,the relationship between fracture permeability and actual stress can be analyzed quantitatively.The result shows that the larger the permeability is,the stronger the stress sensitivity of the reservoir is.

较强的应力敏感性是裂缝性储层的重要特征之一,并直接关系到裂缝性储层开采方案的制定。基于Brown&Scholz粗糙面接触理论,从细观上建立了裂缝面弹塑性接触模型,并依据此模型进行了裂缝应力敏感性分析。结果表明,裂缝的开度或渗透率越大,则相应储层的应力敏感性愈强。该模型的建立对裂缝性储层开采方案的合理制定具有一定的指导意义。

 
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