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低渗透岩石的
相关语句
  low-permeability rocks
     The study showed that under the effect of the net overburden pressure permeability and porosity of rock presented different changing degree, the changing rate of permeability was larger than that of porosity in low-permeability rocks, and pore volume compressibility displayed a larger changing rate in low porosity rocks.
     研究表明,在净上覆压力作用下,岩石渗透率和孔隙度变化程度不同,低渗透岩石的渗透率比其孔隙度的变化率更大,而低孔隙度岩石的孔隙体积压缩系数变化幅度较大;
短句来源
  “低渗透岩石的”译为未确定词的双语例句
     Non-Darcy flow of single-phase water through low permeability rock
     低渗透岩石的单相水非Darcy流
短句来源
     The salinity is lower than 10000mg/l; the PH value is about 7. All the features is helpful for forming a good intensity colloid. The Lab core experiment indicated that core permeability decreased and irreducible water saturation increased after injecting modifier.
     室内岩心实验表明,注入改善剂后,岩心渗透率降低,束缚水饱和度增加,相渗曲线具有特低渗透岩石的相渗特征,注入改善剂后注入压力明显高于注改善剂之前的注入压力,而且随着水饱和度增加,注入压力增加,这表明改善剂对水的阻力比对油的影响更大。
短句来源
     Currently, the low permeability oilfield in Changqing is in the status of low natural output capacity and difficulty to see injection-water effect of oil extraction well, therefore it is necessary to study non-Darcy flow characteristic and mechanism of low permeability rocks.
     由于目前长庆低渗透油田处于自然产能低、采油井难以见到注水效果的状况,因此有必要研究低渗透岩石的非Darcy渗流规律和机理。
短句来源
     In order to study non-Darcy flow characteristic and mechanism of low permeability rocks, the steady flow experiments on saturated sandstone and conglomerate specimens with low permeability were performed with precise FDES-641 triaxial system.
     为了研究低渗透岩石的非Darcy渗流规律和机理,采用高精度的FDES-641三轴系统进行了低渗透饱和砂岩和砾岩的稳定渗流实验。
短句来源
     Steady flow experiments were performed to investigate non-Darcy flow phenomenon in low permeability rocks. The FDES-641 triaxial system was used to measure the flow of brine and distilled water through low permeability saturated sandstone and conglomerates.
     为研究低渗透岩石的非 Darcy渗流现象 ,采用FDES- 6 4 1三轴驱替评价系统进行了稳定渗流实验 ,测定了盐水和蒸馏水在低渗透砂岩和砾岩岩样中的渗流特性。
短句来源
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  相似匹配句对
     Non-Darcy flow of single-phase water through low permeability rock
     低渗透岩石的单相水非Darcy流
短句来源
     The filtering characteristics of rocks
     岩石的滤波特性
短句来源
     b) the primary porosity of rock;
     b)岩石的原生孔隙度;
短句来源
     BRIEF INTRODUCTION TO LOW PERMEABILITY OILFIELD DEVELOPMENT
     低渗透油田开发概论
短句来源
     Analysis for Oil Content of Low Permeability Reservoir
     低渗透储层含油性分析
短句来源
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  low-permeability rocks
It focuses on low-permeability rocks where advection in the matrix is negligible compared with that in fractures.
      
It focuses on low-permeability rocks where advection in the matrix is negligible as compared to that in fractures.
      
In Part 1, we have demonstrated the inevitable growth of the fluid injection hydrofractures in low-permeability rocks.
      
Results indicate that nonequilibrium effects detected at laboratory scale in low-permeability rocks influence the estimation of unsteady-state relative permeability and capillary pressure.
      


In order to make the conventional perm eability test device be effectively used for the permeability test of tight rock s,a certain improverment has been done on the dasis of the standard conventional device,by which the tight rock permeability can be tested by use of high press ure stationary flow method under the formation conditions simulated.In testing p rocess,the confined pressures demanded for the testing might be up to 30.0~60.0 MPa and pore pressures 5.0~15.0 MPa,and the permeabilites of less than...

In order to make the conventional perm eability test device be effectively used for the permeability test of tight rock s,a certain improverment has been done on the dasis of the standard conventional device,by which the tight rock permeability can be tested by use of high press ure stationary flow method under the formation conditions simulated.In testing p rocess,the confined pressures demanded for the testing might be up to 30.0~60.0 MPa and pore pressures 5.0~15.0 MPa,and the permeabilites of less than 10×1 0 -5 μm 2 might be measured under such a high pressure.Meanwhile,the i nstantaneous pulse technique,a well developed vital method of measuring the per meabilities of low permeability rocks,was fully examined.Through contrast and a nalysis,it is found that the permeability value measured by the instantaneous pu lse method is very close to that measured by the improved conventional permeabil ity testing method.Because the instantaneous pulse method is based on unsteady state theory and the high pressure conventional testing on steady flow techniqu e,the two methods may be mutually repairable to make up deficiencies.Through a g reat number of experiments,it is proved that the relative error of the permeabil ity values measured by the two method is very small,the difference between the b oth being less than 10%.It fully proves that the improved conventional permeabil ity test device is of reasonableness.

为了使渗透率常规测试装置更能有效地用于致密岩石的渗透率测试 ,我们在标准常规测试渗透率的实验装置基础上作了一定的改善 ,使之能够在模拟地层条件下进行高压稳流法测试致密岩石渗透率 ,在测试过程中 ,实验所需围压可以达到 30 .0~ 6 0 .0MPa ,孔隙压力可以达到 5~ 15 .0MPa ,并在这样的高压状态下测得的渗透率范围可以低于 10 -5μm2 。同时 ,引用目前发展较为成熟的一种测量低渗透岩石渗透率极有生命力的瞬时脉冲技术给予其充分的验证 ,通过相同测试条件下的瞬时脉冲测试方法的对比分析 ,发现两者所测渗透率值非常接近。由于瞬时脉冲法基于非稳态理论 ,而高压下的常规测试则是基于稳流技术 ,所以 ,两种方法可以互相弥补 ,取长补短。经大量实验证明 :这两种方法测得的渗透率相对误差极小 ,两者误差通常小于 10 % ,这一事实充分论证了改进的渗透率常规测试装置具有合理性。

The relationships between the permeability of the reservoir and confined pressure and confined pressure cycle are studied by experiments. The results show that when the confined pressure increases, the pore structure and the skeleton structure of the reservoir change, which results in the reduction of the permeability. Through the analyses of the varying law of the permeability under variable confined pressure, a new expression of presenting the relationship between the permeability and the confined pressure...

The relationships between the permeability of the reservoir and confined pressure and confined pressure cycle are studied by experiments. The results show that when the confined pressure increases, the pore structure and the skeleton structure of the reservoir change, which results in the reduction of the permeability. Through the analyses of the varying law of the permeability under variable confined pressure, a new expression of presenting the relationship between the permeability and the confined pressure is found out, which is a linear combination of two exponential functions. The expression is verified by the testing data of 31 rock samples of 5 low-permeability blocks, and it is shown that the error of it is less than ±5%.

试验研究了低渗透砂岩储层岩石的围压 -渗透率关系和围压 -松弛循环 -渗透率关系 ,试验结果表明 :随围压增加岩石的孔隙结构和骨架结构发生变化 ,引起岩石渗透率的下降 .通过对变围压条件下低渗透岩石渗透率变化规律分析 ,找到了一种新的表征围压 -渗透率关系的公式——指数函数线性组合 ,对 5个低渗透区块的 3 1组岩石样品试验数据进行对比和验证 ,该指数函数线性组合的拟合误差在± 5 %以内

The synthesizing of a great number of references on origin of subnormal pressure and underpressured pools demonstraites that two mechanisms are predominantly responsible for subsurface underpressure. The first, probably the most important one, ascribes to erosional rebound; and the second is the effect of hydrostratigraphy and topography. Other causes, such as chemical osmosis and cooling of fluid, seem to play a minor role in underpressure development. Three typical underpressured pools are classified in terms...

The synthesizing of a great number of references on origin of subnormal pressure and underpressured pools demonstraites that two mechanisms are predominantly responsible for subsurface underpressure. The first, probably the most important one, ascribes to erosional rebound; and the second is the effect of hydrostratigraphy and topography. Other causes, such as chemical osmosis and cooling of fluid, seem to play a minor role in underpressure development. Three typical underpressured pools are classified in terms of trap geometry, accumulating mechanism associated with subnormal pressure development. The first type of conventional stratigraphic pools (except lenticular sandstone body) is sealed by low permeability rocks, with little tendency for downdip and edge water to advance, as well as with petroleum charged frequently from downdip source rocks. The second type of isolated lenticular sandstone body reservoirs,abundant in the deepcentral parts of many basins, is characterized with the full presence of oil and gas and absence of water. Several processes, including compacting, hydrofracturing and capillary phenomena prior to uplifterosion, as well as subsequent inwardshale flow driven by erosional rebound, will be able to explain petroleum charged into and water expelled out of isolated porous sandstone bodies. The third type of gas accumulations in lowpermeability reservoirs commonly is located in a basincenter and is downdip from waterbearing rocks. Underpressured gas accumulations evolve from overpressured accumulations due to regional or local structural uplift. Two casestudies, southwestern Alberta Basin and Baise Basin (southwestern China),both experiencing regional structural uplifterosion, indicate that hydrodynamicallyclosed underpressured systems facilitate petroleum accumulation and preservation.

地下异常低压主要有两种成因:抬升—剥蚀反弹和在介质孔隙度、渗透率非均质性条件下的区域地下水稳态流动,而化学渗透与流体"冷却"在低压形成中只起次要作用。根据圈闭类型、储盖组合及成藏过程,将低压油气藏分为三种类型:1常规地层型(除砂岩透镜体外)低压油气藏,低渗透岩石通常起遮挡作用,底水与边水不发育;2砂岩透镜体低压油气藏,通常分布于盆地中心的深部,具有不含水、充满油气的特点,油气的充注和水的排出与构造抬升之前压实作用、超压引起的水驱裂缝和毛细管力的作用有关,抬升—剥蚀引起的异常低压导致水由砂岩向页岩的流动有助于油气藏中水的排出;3深盆区低渗透储层低压气藏,通常分布在含水层的下倾方向(气水倒置),异常低压是由于构造抬升致使超压向低压演化的结果。实例研究表明,构造抬升盆地中的低压系统是一个水动力相对封闭的体系,有利于油气的聚集与保存。

 
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