CN1019836B - 获取地层性质的方法和装置 - Google Patents
获取地层性质的方法和装置Info
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Abstract
本发明涉及采集有效样品并进行对计算地层渗透率有用的压力测量的井下仪,包括一跨立式封隔器,能在大流率下对地层流体采样而不使压力降到地层流体始沸点以下。与压力探头结合使用,能在更大范围内获得渗透率读数。还能在在产生压力脉冲过程中控制流量,增强有效采样和测定渗透率的能力。本仪器以单元组合方式构造,在一次沉井中,可获得感兴趣区域的压力分布。
Description
本发明的领域是关于井下仪,特别是那些适用于测量地层渗透率、压力和采集地层流体样品的井下仪。
过去,井下仪已被用来获取地层流体样品。通过使流体流过一电阻率测试室来分析它们,流体的酸度和湿度也被测量。
井下采样仪是由一条金属绳悬挂着放到钻井中,一对安装在井下仪上的封隔器,当它们膨胀时与钻井壁形成密封接触,从而隔离出一段钻井。流体经过井下仪上的一个开口从两个封隔器之间的隔离段中被抽取出来,它们的电阻率也被测量。电阻率的测量结果通过金属绳传送到地面,当电阻率成为常数时,表明未被钻井泥浆成分污染的地层流体已被抽入到井下仪中。抽入的流体被导入一个分立的室中,在那里测量流体的氧化还原势、酸度和温度。这些结果也通过金属绳传送到地面。根据测试结果决定样品是保留在室内还是抽回到钻井。如果样品被抛弃,那么封隔器被收缩,井下仪就移到钻井内另一个不同的位置继续采样。这一过程不断重复,直到井下仪中所有的样品室中都装满了所要求的样品。这样的采样仪在题为“获取选择的地层流体样品的方法和仪器”的美国专利No.4,535,843中有详细说明。在,843号专利中,采样仪器仅用于获取供分析用的地层流体,而不用于测量地层渗透率,因此不关心样品进入仪器的流率。
过去,地层流体样品是通过一个探头采集的,它贯穿钻井壁,通常被一个由与井中流体相容的材料制成的密封件所环绕。典型的结构是,探头上的流体开口被一个安装在支撑平板上的弹性环状密封垫所环绕,通过井下仪上的传动机构,支撑平板可横向移动。在井下仪相对的一边,有一个可选择伸展的固定装置,与可移动的密封垫结合起来用以决定井下仪的位置,使得采样点与井液有效地隔离。
过去使用的采样仪包括一个压力传感器。然而,在一个测试过程中,仍然要关心能不能探测样品是否真的被采集了,如果样品进入了井下仪,那么样品进入样品室有多快。
某些地层测试仪对于地层流体进入井下仪使用了一个“水缓冲装置”。象在美国专利No.3,001,554中所说明的,这种装置包括一个装在封闭样品室中的可移动的活塞件,用以确定样品室中的上下空间。样品室的入口是在活塞的上方,上部空间最初是处在大气压状态,下部空间充满了一种合适的、几乎不可压缩的流体,例如水。另一个室或者叫液体存储器最初也是空的,它的容积等于或大于下部空间,通过一个限流器,例如节流孔,与下部空间相通。当地层流体进入样品室空着的上部时,活塞从它起始的升高位置逐渐向下移动,通过节流孔把水从样品室的下部排入最初是空着的液体存储器。
在这种装置中可以看到,流量控制是通过改变节流孔的大小实现的,水通过节流孔从下部空间排到节流孔下方的液体存储器。这种结构不能用于直接控制地层流体进入井下仪的流率。按照地层渗透率、节流孔的大小和节流孔下方的压力,在这种井下仪中可能出现如下的情形,当样品管路(sampleline)中的压力降到地层流体的始沸点以下时,管路中的压力降就大到足以形成气体层,当这样的气体层发生时,井下仪将不能给出可用于确定地层渗透率的可解释的结果,同时会采集不到有代表性的流体样品。
其它的不用水缓冲的流体采集系统已被使用。在美国专利No.3,653,436中,地层流体被采集到一个最初是空着的样品室中。井下仪包括一个压力传感器来检测流管压力,在极端低的流率下,流管压力只有轻微升高,直到样品室几乎充满为止,测得的压力都不会有明显的增加。在这种结构中,流体采样速率是不可控的。
在美国专利No.3,859,850中可以看到水缓冲型采样系统的改进。在,850专利中,可选择操作的阀门被开启,使得样品导入装置和样品收集装置相联系,样品收集装置包括一个最初是空着的第
一收集室,它与第二样品收集室的一个空的易卸的部分串连相接,第二样品收集室被装在其中的一个可移动活塞件分成两部分,正常情况下活塞被装在第二室封闭部分的压缩空气压向第二室的入口。当流体样品进入样品收集装置时,在第一室具有足够的压力开始移动活塞件使地层流体开始充入第二室之前,第一室先被充满了。通过观测充满第一室所需时间,地层流体进入的流率可被估算出来。
一旦第一室被充满,地层流体的压力等于压缩空气的压力,活塞就向第二室中充满空气部分的运动进一步压缩空气,因此对地层流体施加一个成比例增加的反向压力,测量这个压力从而获得第二个测量结果,由此可估算如果有任何地层流体进入第二室,它的速率是多大。
还有其它的采样装置,它通过包括一个弹性密封的探头在地层固定点上隔离样品点与井液来采集地层流体样品,对它们的描述在美国专利No.3,943,468和英国专利申请Nos.GB2172630A和GB2172631A可看到。
考虑到钻油和气井的巨大花费,因此希望能测定流体的压力和地层的渗透率,以便在对井和地面投入更多的财力物力之前能够估计井的生产能力。大部分渗透地层的液压力是各向异性的,因此使得对一个给定的地层希望测量竖直的和水平的渗透率,典型的做法是在选定地层的一个区域产生一压力梯度,在区域内的一点或多点测定流体压力。一地层的静压力是在该地层中一给定的点测定,方法是在穿过地层的钻孔中使用一个探头,探头在地层中一点和适当的压力测量器件之中具有一个流体连通管。在静压力测量之前、之中和之后,通过对地层注入或抽出流体,改变测试点附近的地层压力,以在该测试点附近产生一个梯度区域。在美国专利No.2,747,401中介绍了一种双探头装置,在其中,流体抽出或注入地层在一个点,而压力梯度测量是在另一点。测得的压力梯度代表地层实际的和相对的渗透率。在401专利中的仪器可用于测量用于计算地层几个不同方向渗透率的参数,因此可揭示地层压力各向异性的程度。
一种称作RFT的井下仪已用来测量渗透率,尽管它主要用作压力测量装置和采样器。这种井下仪的问题是,对低渗透率,在采集探头中流动产生的压降大,当压力降到地层流体始沸点以下时将导致气体层。在这种情形下测试结果是无法解释的。相反,在高渗透率情形,压降通常是太小了,因此压力增加过快,以致无法用商用的压力传感器件进行有效的测量。基本的渗透率测试仪有了某些改进。在一种这样的改进中,在流动过程中采样探头的压力降出现在流体的持续时间为一恒定值的表面上。该值的选择要减少气体层问题并使压力幅度增至最大。问题是没有流率测量的装置,样品的尺寸也不能精确知道,当地层是各向同性,或仅有轻微的各向异性(也就是说“a”在1到100之间,这里a=水平渗透率对竖直渗透率之比)时,为了达到水平渗透率的合理解释,上述测量中的任何一项都是必需的。
在单探头的RFT仪中,测定的渗透率是球形的或圆柱形的渗透率,在均匀的和低各向异性的地层中,这是足够的。在非均匀的和高度各项异性的地层中,对于合适的地层描述,必需附加观测探头。
在测定渗透率时单探头集器的用途是很有限的,因为在流体移动过程中它探测的深度非常浅(几英寸)。因此,由这种仪器收集到的信息仅仅涉及非常靠近样品点处的状况,由于钻井和其后的流体侵蚀,这种状况可能也被严重改变了。
利用多探头,探测的深度可扩展到探头间隔的大小。
为了获取地层更深处有用的渗透率信息以避免钻井损伤和地层侵蚀的影响,探头间隔必须明显大于已有的设计,例如美国专利No.2,747,401中所显示的那样。已有的设计使得探头间距为6到12或更多英尺时就无法实现,因为流体移动速率、因此传播的压力脉冲的大小被限制了,这是由于使用这样的仪器时,只有小面积的钻井壁暴露出来。
另一种测量渗透率的方法是使用竖直脉冲测试。在一个下套管的和水泥管的井中,管封隔器隔离一段多孔的管,以保证足够的钻井面积对流体开放。这就使得压力脉冲大到可以用压力表测量,这种测量只有在下套管和水泥管的井中才能采用。套管后面的通道可能改变有效竖直间距并因此可能改变测量结果。
本发明的仪器被设计成可以在比已有仪器可能达到的深度更深的地层深度上获得渗透率数据。本
仪器使用一个跨立式的封隔器作为井下仪的部件。通过容许更大的流体样品采样面积,可以采用较大的流率,可以获得大约50到80英尺的范围内的有意义的渗透率数据。此外,由于扩大了封隔器密封之间的面积,因此具有在始沸点以上的压力范围采集地层流体的能力,这样采样点和压力探头之间的间距就有效地增加到8到15英尺甚至更大的范围,因此,与已有设计相比,就容许对更加远离井下仪的点收集地层渗透率的数据,增加探测的深度。此外,通过使用跨立式封隔器,用一个封隔器和一个探头就可完成高精度的竖直脉冲测试。
此外,本发明的仪器还用了一个流量控制部件来调节地层流体进入井下仪的流率,从而在地层面上形成一个恒定的压力降和流率降以提高多探头渗透率测定结果。利用样品流量控制,能够保证在地层流体始沸点以上采集样品。也可在未固结的区域采集样品。还可以增加样品流率,用以确定在多大流率下泥沙将被地层流体携带出地层。
本发明的仪器可以用单元组合的方法构成,以具有很强的适应性,完成各种类型的测试。此外,每个单元可制成具有流体管路以及电的和流压控制线(line),当一个单元与下一个单元相接时,这些管路和线可对准彼此连起来。因此一个仪器可以被组合起来完成各种功能,同时仍保持细长的形状。这样的单元可包括样品室,流体分析仪器,压力测量仪器,操作其它单元中各种控制系统的液压系统,用于在地层取样点隔离出一段钻井的封隔器单元,用于在地层流体采样过程中测量压力变化的探头单元和一个把被泥饼污染的样品送回到钻井中的泵出单元。
本发明的仪器是关于能够进行压力测量的井下仪,这种测量对计算地层渗透率是有用的。这种井下仪包括了一个跨立式封隔器,容许在大的流率下采集地层流体样品而不会使压力降低到地层流体的始沸点以下。当与压力探头结合使用时,这种井下仪用于获得更有意义的渗透率读数,而且探测深度比已知设计实际所能达到的更深。此外,本发明的仪器容许在增加渗透率测定的压力脉冲产生过程中的流量控制。该仪器可以是单元组合式结构,因此在井下仪的一次沉井中,可以获得感兴趣区域的压力分布,在每个测试点可进行流体分析,在压力高于始沸点的条件下多个未污染流体样品可被采集,在每个测试点可进行局部竖直和水平渗透率测量,封隔器单元可固定在由上述测量所确定的位置,可以进行大范围的增压试验。
图1是本发明仪器的一个简图表示,示出某些可作为仪器的一个部分的单元部件。
图2是可作为仪器一部分的附加部件的简图表示。
仪器A是一个优选的单元组合结构,不过整体的仪器是在发明的范围之内。仪器A是一个井下仪,可以用金属绳(未表示出)放入到钻井(未表示出)中,用以进行地层性质测试。为了简化,金属绳与井下仪的连结以及电源和电子学通讯部分都没有表示出来。电源和通讯线延伸到井下仪的整个长度,总起来用标号8表示。电源和通讯部件都是熟悉该技术的人所熟知的,过去已有商用。这一类控制设备通常安装在井下仪最上部邻近金属绳与井下仪的连结处,用电线连通到井下仪的各个部件。
如图1所示,本发明的仪器A具有一个液压动力单元C,一个封隔器单元P和一个探头单元E。探头单元E表示出一个探头部件10,它是用于各向同性渗透率测试。当用井下仪测定各向异性渗透率和竖直储藏结构时,一个多探头单元F可以加到探头单元F上。多探头单元F具有一个水平探头部件12和一个沉降(Sink)探头部件14。
液压动力单元C包括泵16,存储器18和控制泵的工作的马达20。低油开关22也是控制系统的一个部件,用来调节泵的工作。应该注意到:通过气压或液压方式控制泵的工作并不背离本发明的精神。
液压流管24接到泵16的出口,穿过液压动力单元C,进入邻接的单元作为液压动力源。在图1所示的实施例中,液压流管24穿过液压动力单元C延伸到封隔器单元P和探头单元E或F(取决于使用哪一个)。利用液压流管26使环路封闭,在图1中它从探头单元E返回到液压动力单元C,终止在存储器18。
排出单元M可用于通过抽流管54把不需要的样品抽回到钻井中,或者可用来把流体从钻井抽到流管54中用以使跨立式封隔器2830膨胀。如图2所示,泵92可以调整到从流管54抽取并且通过流管95把不需要的样品排出,或者可以调整到从
钻井中(通过流管95)把流体抽到流管54中。排出单元M具有必要的控制元件来调节泵92和连接流管54与流管95以完成排出程序。
换一种方式,跨立式封隔器28和30可以利用来自泵16的压力流体膨胀和收缩而不背离本发明的精神。如实际上可看到的,排出单元M的选择性操作使泵92启动,结合控制阀96和膨胀收缩装置I的选择操作,可导致封隔器28和30的选择膨胀和收缩。封隔器28和30安装在仪器A的外圆周32上。封隔器28和30优选用一种与井中液体和温度相容的弹性材料制成。封隔器28和30内部具有空腔。当泵92工作,并且膨胀装置调在适当的位置,流体从流管54经过膨胀/收缩装置,再经过流管38到封隔器28和30。
还如图1所示,探头单元E具有探头部件10,它相对于仪器A可有选择地移动。探头10的运动是通过探头传动器40的动作引起的。探头传动器使得流管24和26与流管42和44连通。如图1所示,探头46是装在框架48上,框架48相对于仪器A可以移动,而探头46相对于框架48可以移动。控制器40把流体从流管24和26有选择地导入流管42和44就可起动这些相对移动,其结果是框架48最先向外移动与钻井壁接触。框架48的延伸有助于在使用中稳定井下仪,同时把探头46带到钻井壁的附近。由于目的是获得压力波在地层流体中传播的精确读数,因此希望进一步把探头46插入地层并穿过沉积的泥块。因此,连通流管24和流管44导致探头46插入地层的相对位移,这是通过探头相对于框架48的相对运动实现的。探头12和14的操作是类似的。
把仪器A放入到钻孔中,使封隔器28和30膨胀,就可用多探头单元F进行渗透率测量。应该指出,这样的测量可以用探头单元E或者E和F来完成,而不必用封隔器单元P,这样做并不背离本发明的精神。然后,探头46按如上所述放入地层。应当注意到:当采用多探头F或采用包含有竖直探头46、水平探头12和沉降探头14的探头单元E时,其过程是类似的。
当封隔器28和30膨胀和/或安放好探头46和/或探头46、12和14之后,地层探测就可开始。样品流管54从外圆周32上封隔器28和30之间的一点开始延伸,通过邻近的单元,进入样品单元S。竖直探头46和沉降探头14使地层流体通过电阻率测量室,压力测量器件和一个预检机构然后进入样品流管54。水平探头12使地层流体进入一压力测量器件和预检机构。当使用单元E或E和F时,隔离阀62安装于电阻率传感器56的下游。在关闭位置时,隔离阀62限制内部流管的容积,改善压力表58所作的动力学测量精度。在开始的压力测量完成之后,隔离阀62能被打开,以使流体流入其它单元。当采集最初的样品时,很容易想到最初的样品是被泥块和滤液污染的。希望把这些污染物从采集的样品中清除出去。因此,排出单元M最初被用作从仪器A中清除这些地层流体样品,这些样品是通过入口64或者竖直探头46或者导向探头14采集到流管54中的。在适当地把污染物从仪器A中清除出去之后,地层液体可以继续流过样品流管54,流管54一直延伸到邻接的单元,例如精密压力单元B,流体分析单元D,排出单元M(图2),流量控制单元N和可能附加上去的任何数目的样品室单元S,调整样品流管54穿过各种单元的纵向长度,多个样品室单元可叠起来而不必增加井下仪总的直径。井下仪在提升到地面之前可以采集更多的样品,也能够用在较小的钻孔中。
流量控制单元N包括一个流量传感器66,一个流量控制器68和一个可选择调节的限制器件,典型地说是一个阀70。使用上面描述的装置再结合存储器72和74,在特定的流率下能够得到预定样品体积。获取样品后,采集到流量控制单元N中的样品可储存在样品室单元S。为了完成这一过程,打开阀80,同时关闭阀62、62A和62B,这样就把样品引导到样品室单元S中的室84中。然后井下仪可移动到不同的位置并重复上面的过程。采集到的其它样品可被储存在任意数目的样品室单元S中,它们可通过适当地调整阀门连接在一起。例如,如图2所示,表示出有两个样品室S。在操作阀门80充满上边一个样品室之后,通过打开连接样品室90的阀可把下一个样品存储在最下面的样品室单元S中。必须指出,每个样品室单元具有自己的控制部件,如图2所示的92和94。根据所要进行的探测的性质,在一种特定的井下仪结构中可以使用任何数目的样品室单元S,或者不用样品室单元。所有这些结构都在本发明的权限范
围之内。
如图2所示,样品流管54也延伸到精密压力单元B和流体分析单元D。表98应最好安装在靠近探头12、14或46的地方以缩短内管路,这是由于流体的可压缩性可能影响压力测量的响应性。对于更精确的压力随时间的测量,精密表98要比应变仪58更敏感。表98可以是石英压力表,它比应变压力仪具有更高的静态精确性和分辨率。可以使用适当的阀和控制机构交叉地操作表98和表58,以发挥它们承受压差的不同灵敏度和能力。
按照所要达到的目的。可采用各种结构的仪器A。对基本的采样,液压动力单元C可和电源单元L、探头单元E和多个样品室单元S结合在一起使用。对于储藏压力测定,液压动力单元C可与电源单元L,探头单元E和精密压力单元B一起使用。对于在储藏条件下的非污染采样,液压动力单元C可以与电源单元L、探头单元E结合流体分析单元D、排出单元M和多个样品室单元S一起使用,为了测量各向同性的渗透率,液压动力单元C可以和电源单元L、探头单元E、精密压力单元B、流量控制单元N和多个样品室单元S结合起来使用。对各向异性渗透率测量,液压动力单元可以与探头单元E、多探头单元F、电源单元L、精密压力单元B、流量控制单元N和多个样品室单元S一起使用。模拟DST测试可以把电源单元L与封隔器单元P和精密压力单元B以及样品室单元S结合起来进行。其它结构也是可能的,而不背离本发明精神,并且这些结构的组成也是取决于采用井下仪所要达到的目的。井下仪可以是单一结构和组合结构,然而,对于不要求具有所有特性的使用者来说,组合结构具有更大的适应性和较低的成本。
单个的单元可做成能很快彼此连接起来。在优选实施例中,使用了单元之间齐平面嵌装的连接代替公/母连接,以避免通常在井下环境中可能聚集污染物的部位。
还应注意到,流量控制单元也适用于在采样时控制压力。
使用封隔器单元P容许样品通过入口64被采集,这时是从位于封隔器28和30之间的钻井段抽取地层流体,这增加了钻井的表面积,这就容许使用较大的流率而不会冒把样品压力降到地层流体始沸点以下从而产生影响渗透率测试结果的不希望的气体的危险。
此外,如前面所描述的,利用仪器A容许在远比美国专利No.2,747,401所公开的几厘米要大的距离上使用多探头。为了测定不受钻井损伤和地层侵蚀影响的地层渗透率,必须使探头间距在6到12英尺甚至更大。已知的金属绳探头要使探头间距达到这样大是困难的,这是由于钻井壁暴露的面积小,流体抽取的速率以至于压力脉冲的大小受到限制。
样品流量控制还容许使用不同的流率,以测定在什么样的流率下泥沙与地层流体一起被从地层中抽出来。这一信息在各种增强复采过程中是有用的。流量控制对于尽可能快地获取有意义的地层流体样品也是有用的,这样可减小在高渗透率情况下由于泥浆渗到地层上粘住金属绳和/或井下仪的可能性。在低渗透率情形下,流量控制有助于防止把地层流体样品的压力抽到其始沸点以下。
概括起来,液压动力单元为仪器A提供了一个基本的液压动力源。考虑到井下会遇到的危险条件,可用无刷直流电机来驱动泵16。无刷电机可封在一种流体介质中,同时包括一个探测器关断电机的激励。
当在仪器A中不包括流体分析单元D时,探头单元E和多探头单元F包括一个电阻率测量元件56,它可在水基泥浆中区分泥浆滤液和地层流体。当进行渗透率测量时,阀62减少滞后流动。流体分析单元D设计成能区别油、气和水。利用它探测气的能力,流体分析单元D还可与抽出单元M结合起来测定地层的始沸点。
流量控制单元N进一步包括一个探测活塞位置的装置,这个位置在低渗透率区域是有用的,在那种情况下流率可能是不足以完全充满单元。流率也可能是如此之低以至于很难测量,因此活塞位置可使我们知道被采样品的容量。
尽管已描述了本发明的具体实施例,很容易理解,本发明不仅局限于此,因为可做许多改进。因此打算用所附加的权利要求来包括属于权利要求的精神和范围内的任何改进。
Claims (14)
1、一种多目的的利用井下仪获取关于地层性质的井下方法,其特征在于,包括下列步骤:
利用具有一定位入口的装置提供地层流体与井下仪内部的流体连通,以便在地层流体区域有选择地产生压力瞬变,形成地层流体脉冲;
以防止流进所述入口的地层流体压力减小到它的始沸点以下的方式调节地层流体和井下仪之间流体的流率;
探测由所述的脉冲产生装置产生的地层压力瞬变。
2、如在权利要求1的方法,其中,所述的流体流量调节步骤进一步包括:
在地层和井下仪之间建立一根流管,包括安装在该流管中的流量检测元件和选择性的可调限制器件;
选择性地调节所述的限制器件,以调节流体的流率。
3、如权利要求1的方法进一步包括下述步骤:
测量地层流体的物理性质;
测量地层流体的压力;
有选择地把流体从所述的井下仪内部抽出去。
4、一种用于获得关于地层流体性质数据的多目的井下仪,包括外壳、样品室,电源和通讯链路,其特征在于,
地层流体脉冲装置,它具有一个定位的入口以提供地层流体与井下仪内部的流体连通,用来在地层流体区域选择性地产生压力瞬变;
封隔器装置,安装在所述的地层流体脉冲装置入口的上方和下方,用以从所述的封隔器上方和下方的井液中封隔出一段钻井;
压力检测装置,用来探测由所述的脉冲装置产生的地层压力瞬变。
5、如权利要求4的井下仪,其中,所述的封隔器装置进一步包括:一对可更换的弹性部件,每个都套在井下仪的外表面;
所述的弹性部件具有一个内部空腔;
用以有选择地膨胀和收缩所述的弹性部件的装置。
6、如权利要求5的井下仪,其中,所述的膨胀和收缩装置进一步包括:
一台泵;
至少一根流管,把所述的泵连接到所述弹性部件的所述空腔;
所述流管中的控制装置,用于选择地调节流入空穴的流体,以使所述的弹性部件膨胀和收缩。
7、如权利要求6的井下仪,其中:
泵和一部分所述的流管是在形成井下仪一个部分的排出单元中;
所述的控制装置、所述的弹性部件和另一部分所述流管是安装在形成所述的井下仪的一部分的封隔器单元中。
8、如权利要求4的井下仪,其中,所述的脉冲装置进一步包括:流量控制装置,用以调节地层流体和井下仪之间流体的流率。
9、如权利要求8的井下仪,其中,所述的流量控制装置进一步包括:
一根流管;
一个流量检测元件;
安装在所述流管上的选择性的可调限制器件;
一个选择地调节所述的限制器件的流量控制单元。
10、如权利要求9的井下仪,其中:
所述的流管、流量检测元件、可调节的限制器件和流量控制器处于井下仪的模件化流量控制单元中;
所述的流管延伸到所述的流量控制单元的整个长度。
11、如权利要求10的井下仪,其中,所述的地层流体脉冲装置进一步包括:
第一流管延伸管,与所述的流量控制部分的所述流管相通,同时延伸到井下仪的外表面。
12、如权利要求11的井下仪中进一步包括:
至少一个样品室安置在井下仪的一个模件化样品室单元中;
第二流管延伸管,纵向延伸到所述样品室单元的整个长度,与所述的流管和所述的第一流管延伸管保持有选择的流体连通。
13、如权利要求12的井下仪进一步包括:
流体分析装置,用于测量地层流体物理性质;
精密压力测量装置,用于精确测量地层流体压力;
第三流管延伸管,主要是与所述的第二流管延伸管准直连通,并且延伸到所述的流体分析装置和所述的精密压力测量装置;
排出装置,与所述的所有管路和井下仪的外表面连通,用于选择地把所述的所有流管中的流体抽入和抽出所述的井下仪。
14、如权利要求4的井下仪,其中,所述的压力检测装置安装在井下仪中位于被封隔器隔离出的一段钻井以外的一部分上,所述的压力检测装置进一步包括一个具有流管的探头,通过所述的流管与地层流体有选择地相通。
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US5142471A (en) * | 1990-04-05 | 1992-08-25 | Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College | Method for determining the pressure or stress of a geological formation from acoustic measurement |
FR2661943B1 (fr) * | 1990-05-10 | 1992-07-17 | Commissariat Energie Atomique | Bouteille de prelevement de fluide, utilisable en forages profonds. |
US5230244A (en) * | 1990-06-28 | 1993-07-27 | Halliburton Logging Services, Inc. | Formation flush pump system for use in a wireline formation test tool |
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US5201220A (en) * | 1990-08-28 | 1993-04-13 | Schlumberger Technology Corp. | Apparatus and method for detecting the presence of gas in a borehole flow stream |
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- 1989-07-31 BR BR898903832A patent/BR8903832A/pt not_active IP Right Cessation
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- 1989-09-04 MX MX017421A patent/MX166366B/es unknown
- 1989-09-12 CN CN89107138A patent/CN1019836B/zh not_active Expired
- 1989-09-14 EP EP95115286A patent/EP0697502B1/en not_active Expired - Lifetime
- 1989-09-14 EP EP89402511A patent/EP0362010B1/en not_active Expired - Lifetime
- 1989-09-14 DE DE68927569T patent/DE68927569T2/de not_active Expired - Lifetime
- 1989-09-14 DE DE68929202T patent/DE68929202T2/de not_active Expired - Lifetime
- 1989-09-14 AT AT89402511T patent/ATE146560T1/de not_active IP Right Cessation
- 1989-09-14 ES ES95115286T patent/ES2148392T3/es not_active Expired - Lifetime
- 1989-09-19 PH PH39251A patent/PH26204A/en unknown
- 1989-09-19 EG EG460/89A patent/EG18656A/xx active
- 1989-09-20 DZ DZ890148A patent/DZ1360A1/fr active
- 1989-09-20 MA MA21886A patent/MA21632A1/fr unknown
- 1989-09-21 MY MYPI89001294A patent/MY104680A/en unknown
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- 1989-09-22 RU SU894614961A patent/RU2074316C1/ru active
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NZ230726A (en) | 1992-07-28 |
ZA897236B (en) | 1990-06-27 |
DE68929202T2 (de) | 2001-01-04 |
CN1041419A (zh) | 1990-04-18 |
EP0362010B1 (en) | 1996-12-18 |
NO893435D0 (no) | 1989-08-28 |
EP0697502B1 (en) | 2000-05-03 |
EP0362010A2 (en) | 1990-04-04 |
RU2074316C1 (ru) | 1997-02-27 |
MX166366B (es) | 1993-01-05 |
DK173591B1 (da) | 2001-04-09 |
ES2148392T3 (es) | 2000-10-16 |
EG18656A (en) | 1993-10-30 |
AU626216B2 (en) | 1992-07-23 |
DE68927569T2 (de) | 1997-06-26 |
DK429389A (da) | 1990-03-24 |
NO180057C (no) | 1997-02-05 |
MA21632A1 (fr) | 1990-04-01 |
ATE146560T1 (de) | 1997-01-15 |
EP0697502A1 (en) | 1996-02-21 |
DZ1360A1 (fr) | 2004-09-13 |
NO893435L (no) | 1990-03-26 |
TR28979A (tr) | 1997-07-21 |
DE68927569D1 (de) | 1997-01-30 |
AU4166889A (en) | 1990-03-29 |
BR8903832A (pt) | 1990-03-27 |
US4860581A (en) | 1989-08-29 |
MY104680A (en) | 1994-05-31 |
DE68929202D1 (de) | 2000-06-08 |
NO180057B (no) | 1996-10-28 |
PH26204A (en) | 1992-03-18 |
OA09094A (en) | 1991-10-31 |
DK429389D0 (da) | 1989-08-31 |
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