• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1495284 Testing earth formations in situ SCHLUMBERGER Ltd 11 Dec 1974 [12 Dec 1973] 53510/74 Heading G1S [Also in Division E1] Apparatus for testing the fluid productivity of earth formations, as 13, comprises a tool 10 suspended in a well bore 12 and carrying fluidadmitting means 20 engaging the wall of the bore to isolate a part thereof from borehole fluids but to admit fluid from an earth formation adjacent thereto via bore 49 in valve-member 48 and a fluidflow line 59, 60 communicating with expansible chambers 71, 72 through a branch conduit 70 of which the pressure is monitored by a transducer 128. The tool is fixed at a given position in the borehole by extension of an anchor 21 simultaneously with extension of a tubular member 43 by respective hydraulic piston actuators 41, 42. Further hydraulic actuators 75, 76 act with respective pistons 73, 74 to draw fluids produced from the formation into respective chambers 71, 72, the actuation being such that the displacement rate of piston 74 is lower than that of piston 73 and such that chamber 72 is filled before any fluid enters chamber 71. The resulting pressure variations detected by the transducer are indicated in Fig. 7 for the cases with formation fluid-flow-rate Q 5 zero (7A); less than that Q 1 due to piston 74 (7B); intermediate that due to the two pistons (7C) and greater than that of the piston 73 (7D).
    公开号:SU1344256A3
    申请号:SU742084016
    申请日:1974-12-11
    公开日:1987-10-07
    发明作者:Дж.Урбаноски Харольд
    申请人:Шлюмбергер Оверсиз С.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the field of field geophysics and can be used to assess the fluid saturation of the layers of the earth's crust.
    The purpose of the invention is to improve the accuracy and efficiency of formation formation.
    FIG. 1 is a block diagram of a wellbore survey device; Fig.2 - functional dependencies (P)
    from
    changes in time pressure (t).
    The device comprises a housing 1, two working chambers 2 and 3, a probe 4, a pressure measurement indicator 5 and means 6 for expanding the chambers comprising chambers 7 and 8 with pistons located in them, as well as two actuators 9 and 10 for moving the pistons The working surfaces of the pistons have different, predetermined sizes. The device is connected by cable 11 to a control and recording unit 12 located on the surface.
    In the two-chamber version of the device, four situations are possible, which are illustrated by graphs, changes in pressure P of time t (Fig. 2). The first of them corresponds to the situation when the fluid flow is absent and its speed is Qj O, the second is when the fluid flow rate is less than the possible maximum speed Q, determined by the parameters of the piston of the first chamber, the third when the fluid flow rate is between possible maximum speeds Qf and Q , determined by the parameters of the pistons of both chambers,, and, finally, the fourth graph determines the situation when the fluid inflow rate is greater than or equal to the possible maximum velocity Q determined by the parameters of the second piston measures.
    The method is implemented using a device as follows.
    In the prescribed interval of the incision opened by the well, the device is pressed against the wall of the well so that the exit of the probe is isolated from the drilling fluid in it. This can be achieved using, for example, rubber cuffs pressed by the device to the wall of the well. Next, open access
    reservoir fluid into chambers When it enters, pressure changes are recorded in them. From these changes, the relationship between the actual and maximum possible flow rates of the fluid is established.
    The invention allows operatively and directly in situ conditions to determine the productivity of the studied formation and make decisions about the need for further research.
    权利要求:
    Claims (2)
    [1]
    1. A method of borehole exploration of the earth formation, which involves sampling fluid into two chambers in the process of expanding the volumes of chambers and measuring pressure, characterized in that, in order to improve the accuracy of the formation analysis, a series of
    chamber volumes, at two different, predetermined rates, corresponding to two maximum possible fluid flow rates, fluid pressure is measured continuously in the process of expanding the chamber volumes, using the pressure value, a correlation between the actual and maximum possible rates is found. flow and received
    the data assess the productivity of the studied formation.
    [2]
    2. A device for borehole exploration of the earth formation, comprising a housing with a located thereon
    a probe for flourer intake; and a two-piston chamber with a DPF fluid sampling probe connected to the probe, characterized in that, in order to increase the accuracy of the analysis
    it is equipped with a second chamber, two hydraulic actuators and an indicator of pressure change, with the pistons placed in each of the chambers and connected to the hydraulic
    actuators, and the indicator of pressure change is connected to the indicated chambers, while the working surfaces of the pistons have dimensions that allow these pistons to move in
    cameras with different predetermined speeds.
    / V //
    , Q2
    # 7-7
    No
    phage.1
    Editor N. Tupitsa
    Compiled by E. Volkonsky
    Tehred A. KravchukCorrector A.Zimokosov
    Order 4841/59 Circulation 730 Subscription
    VNISHI USSR State Committee
    for inventions and discoveries 113035, -Moscow, Zh-35, Raushsk nab., d.4 / 5
    Production and printing company, Uzhgorod, Projecto st., 4
    FIG. 2
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR2254799A1|1975-07-11|
    GB1495284A|1977-12-14|
    JPS5724479B2|1982-05-24|
    NL180339B|1986-09-01|
    BR7410295A|1976-06-29|
    IT1049332B|1981-01-20|
    NL180339C|1987-02-02|
    NO144273B|1981-04-21|
    NO144273C|1981-07-29|
    IE40125L|1975-06-12|
    US3859851A|1975-01-14|
    EG11678A|1977-09-30|
    JPS5092201A|1975-07-23|
    IE40125B1|1979-03-14|
    FR2254799B1|1978-06-23|
    CA1008359A|1977-04-12|
    NL7415504A|1975-06-16|
    NO744301L|1975-07-07|
    AU7558874A|1976-05-27|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US424122A|US3859851A|1973-12-12|1973-12-12|Methods and apparatus for testing earth formations|
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