CN101509982B - Core electrofiltration potential measuring gripper - Google Patents

Core electrofiltration potential measuring gripper Download PDF

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Publication number
CN101509982B
CN101509982B CN2009100715450A CN200910071545A CN101509982B CN 101509982 B CN101509982 B CN 101509982B CN 2009100715450 A CN2009100715450 A CN 2009100715450A CN 200910071545 A CN200910071545 A CN 200910071545A CN 101509982 B CN101509982 B CN 101509982B
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CN
China
Prior art keywords
rock core
organic glass
glass container
low pressure
core
Prior art date
Application number
CN2009100715450A
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Chinese (zh)
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CN101509982A (en
Inventor
王伟男
俞军
袁晓燕
王丽娟
曹雅芳
张金莉
曹丽
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大庆油田有限责任公司
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Priority to CN2009100715450A priority Critical patent/CN101509982B/en
Publication of CN101509982A publication Critical patent/CN101509982A/en
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Publication of CN101509982B publication Critical patent/CN101509982B/en

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Abstract

The invention provides a core electrofiltration potential measurement clamp holder which mainly solves the problem that the conventional core clamp holder can not measure electrofiltration potentials. The clamp holder is characterized in that after one side of a high-pressure organic glass container (2) is fixedly connected with an upright plate at one side of a device bracket (16), and the other side thereof is fixedly connected with a core fixing mount (6), the high-pressure organic glass container is horizontally arranged on an arc supporting plate of the device bracket (16); the core fixing mount (6) is internally provided with a rubber sealing boot (7) and provided with an air filling connector (9); one side of a low-pressure organic glass container (10) is fixedly connected with a low-pressure container fixing seat (11) and horizontally arranged on an arc supporting plate of the device bracket (16); the low-pressure container fixing seat (11) is connected with a handle (14) which is provided with a thrust ball bearing (13) by a driving screw (12); and the thrust ball bearing (13) and the handle (14) are fixed on an upright plate at the other side of the device bracket (16). The clamp holder has the characteristic of being capable of measuring core electrofiltration potentials.

Description

Core electrofiltration potential measuring gripper
Technical field:
A kind of device of using when the present invention relates to carry out the natural potential logging experimental study in the rock physics experiment field relates to a kind of core holding unit of measuring the rock electrofiltration potential specifically.
Background technology:
In rock physics experiment field, when measuring the spontaneous potential of rock, utilize traditional clamper can only record the diffusion adsorption potential, and can not simulate at present because of the electrofiltration potential that pressure anomaly produced between stratum and the drilling mud post.But in fact, the spontaneous potential of rock not only is made up of the diffusion adsorption potential in the stratum, also have electrofiltration potential and oxidation-reduction potential, oxidation-reduction potential produces because of containing metalliferous mineral in the stratum, rare at general dirty sandstone petroleum reservoir, therefore little to the influence of actual measurement precision.But electrofiltration potential but can produce considerable influence to measured spontaneous potential, so need to proofread and correct in natural potential logging.Once there was the technician to consider existing clamper is improved obtaining electrofiltration potential, but do not see so far that successfully report was arranged, we can say it is a shortcoming of the prior art really.
Summary of the invention:
In order to solve the not problem of energy measurement electrofiltration potential of conventional core self-potential survey clamper, the invention provides a kind of core electrofiltration potential measuring gripper, have the advantages that to measure formation rock diffusion adsorption potential and electrofiltration potential, after using this kind clamper, improved the measuring accuracy of spontaneous potential.
Technical scheme of the present invention is: this kind core electrofiltration potential measuring gripper, comprise device carriage, high pressure organic glass container, low pressure organic glass container and the rock core fixed mount, the low pressure vessel holder that have the supported on both sides riser, and handle, thrust ball bearing and drive screw, all have water filling joint and freeing port on wherein said high pressure organic glass container and the low pressure organic glass container, and silver electrode is installed; One side of described high pressure organic glass container fixes and connects with a cant board of device carriage, and opposite side and rock core fixed mount fix and connect afterwards that level places on the arc pallet of device carriage; The built-in rubber sealing boot of described rock core fixed mount is realized sealing by axial seal O type circle and radial seal O type circle between the inwall of the two ends of described rubber sealing boot and rock core fixed mount, has gas-charging connection on the described rock core fixed mount; One side of described low pressure organic glass container and low pressure vessel holder fix and connect and level places on the arc pallet of device carriage, and described low pressure vessel holder links through drive screw and the handle that has thrust ball bearing; Described thrust ball bearing and handle are fixed on the opposite side riser of device carriage; In the described clamper, rock core is adopted the mode of gas-flow closure, solution chamber's volume at rock core two ends is greater than the rock core volume more than 5 times.
The present invention has following beneficial effect: when using this kind core holding unit to measure spontaneous potential, not only can record the electrofiltration potential that spreads adsorption potential but also can measure rock core, improve the accuracy that the rock core spontaneous potential is surveyed.In addition, this device is easy and simple to handle in use, and pressurization, pressure release is rapid, and constant voltage is stable, and sealing is reliable, can satisfy the measurement needs of different length specification rock core, and very high practical value is arranged.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
1-water filling joint among the figure, 2-high pressure organic glass container, 3-silver electrode, 4-axial seal O type circle, 5-radial seal O type circle, 6-rock core fixed mount, the 7-rubber sealing boot, 8-rock core, 9-gas-charging connection, 10-low pressure organic glass container, 11-low pressure vessel holder, 12-drive screw, the 13-thrust ball bearing, the 14-handle, 15-measurement instrument, 16-device carriage.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing:
This kind of core electrofiltration potential measuring gripper, as shown in Figure 1, comprise device carriage 16, high pressure organic glass container 2, low pressure organic glass container 10 and the rock core fixed mount 6, the low pressure vessel holder 11 that have the supported on both sides riser, and handle 14, thrust ball bearing 13 and drive screw 12.Wherein, all have water filling joint 1 and freeing port on described high pressure organic glass container 2 and the low pressure organic glass container 10, and silver electrode 3 is installed; One side of described high pressure organic glass container 2 fixes and connects with a cant board of device carriage 16, and opposite side and rock core fixed mount 6 fix and connect afterwards that level places on the arc pallet of device carriage 16; Described rock core fixed mount 6 built-in rubber sealing boots 7 are realized sealing by axial seal O type circle 4 and radial seal O type circle 5 between the inwall of the two ends of described rubber sealing boot 7 and rock core fixed mount 6, have gas-charging connection 9 on the described rock core fixed mount 6; One side of described low pressure organic glass container 10 and low pressure vessel holder 11 fix and connect and level places on the arc pallet of device carriage 16, and described low pressure vessel holder 11 links through drive screws 12 and the handle 14 that has thrust ball bearing 13; Described thrust ball bearing 13 is fixed on the opposite side riser of device carriage 16 with handle 14.
This device is when measuring the rock electrofiltration potential, elder generation's rotary handle 14, make it to drive drive screw 12 and do moving radially to the right, under the effect of drive screw 12, low pressure vessel holder 11 and low pressure organic glass container 10 move right vertically, when moving to extreme position, the rock core fixed mount 6 that has rubber sealing boot 7 can be taken out, with rock core to be measured 8 at the rubber sealing boot internal fixation, then rock core fixed mount 6 is placed on the arc pallet of device carriage 16, this moment is rotary handle 14 again, when it drives transmission shaft 12 rotations, converts rotatablely moving of transmission shaft 12 to low pressure organic glass container 10 move axially left.Rock core fixed mount 6 can be clamped between high pressure organic glass container 2 and the low pressure organic glass container 10 like this.
In this clamper, rock core is adopted the mode of gas-flow closure, solution chamber's volume at rock core two ends is greater than the rock core volume more than 5 times.Pressure equilibrium to be taken into full account when measuring rock core diffusion adsorption potential, simulated formation pressure will be guaranteed when measuring core electrofiltration potential.
Concrete measuring process is as follows: with the rock core of handling well the core holding unit of packing into, sealing; Get rid of the air in the solution chamber of rock core two ends, fill with the salt solution of same concentration for two ends solution chamber; The potential difference (PD) at record rock core two ends, its value is measured the background values of core electrofiltration potential as next step; Press with the high pressure organic glass container end of injection pump to rock core, this pressure is used to simulate the pressure differential between mud column and the stratum, because movable kation is many in the rock core pore fluid, therefore under pressure, these movable kations can be migrated to low pressure end, produce electronic potential barrier, form electrofiltration potential, under certain pressure, write down the electronic potential barrier that is produced on the rock core, promptly obtain the electrofiltration potential value of rock core.
Because rock core is infiltrative, for the high osmosis rock core, injection pressure can not be stabilized in a certain fixed value for a long time, can be in the injection pressure electrofiltration potential value under a certain pressure of record in the elevation process gradually.
This device in use, the sealing of rock core relies on different axial seal O type circle 4 of sealing mechanism and radial seal O type circle 5 on the one hand, this O RunddichtringO of two types is finished; By gas-charging connection 9 gases at high pressure are charged into annular space between rock core fixed mount 6 and the rubber sealing boot 7 on the other hand, on rubber sealing boot 7 intrinsic flexible bases own, apply certain external force for again rubber sealing boot 7, thereby the rock core banding is reached the purpose of sealing.Be provided with rated pressure for high pressure organic glass container by opening the two-position three way valve that connects on the high pressure organic glass container this moment again, closes various valves subsequently, and measurement result just can be by placing silver electrode 3 outputs in the different vessels respectively.After measurement finished, operated valve was given the container pressure release and is discharged the interior liquid of container, treated that liquid release finishes, and promptly rotatable handles 14, and rock core is taken out, and repeat aforesaid operations when measuring once more.This device is easy and simple to handle in use, and pressurization, pressure release is rapid, and constant voltage is stable, and sealing is reliable, can satisfy the measurement needs of different length specification rock core, and very high practical value is arranged.

Claims (1)

1. core electrofiltration potential measuring gripper, comprise device carriage (16), high pressure organic glass container (2), low pressure organic glass container (10) and the rock core fixed mount (6), the low pressure vessel holder (11) that have the supported on both sides riser, and handle (14), thrust ball bearing (13) and drive screw (12), it is characterized in that: all have water filling joint (1) and freeing port on described high pressure organic glass container (2) and the low pressure organic glass container (10), and silver electrode (3) is installed; One side of described high pressure organic glass container (2) fixes and connects with a cant board of device carriage (16), and opposite side and rock core fixed mount (6) fix and connect afterwards that level places on the arc pallet of device carriage (16); The built-in rubber sealing boot of described rock core fixed mount (6) (7), realize sealing by axial seal O type circle (4) and radial seal O type circle (5) between the inwall of the two ends of described rubber sealing boot (7) and rock core fixed mount (6), have gas-charging connection (9) on the described rock core fixed mount (6); One side of described low pressure organic glass container (10) and low pressure vessel holder (11) fix and connect and level places on the arc pallet of device carriage (16), and described low pressure vessel holder (11) links through drive screw (12) and the handle (14) that has thrust ball bearing (13); Described thrust ball bearing (13) is fixed on the opposite side riser of device carriage (16) with handle (14);
In the described clamper, rock core is adopted the mode of gas-flow closure, solution chamber's volume at rock core two ends is greater than the rock core volume more than 5 times.
CN2009100715450A 2009-03-06 2009-03-06 Core electrofiltration potential measuring gripper CN101509982B (en)

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Application Number Priority Date Filing Date Title
CN2009100715450A CN101509982B (en) 2009-03-06 2009-03-06 Core electrofiltration potential measuring gripper

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Application Number Priority Date Filing Date Title
CN2009100715450A CN101509982B (en) 2009-03-06 2009-03-06 Core electrofiltration potential measuring gripper

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CN101509982A CN101509982A (en) 2009-08-19
CN101509982B true CN101509982B (en) 2011-05-11

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101799485B (en) * 2010-04-12 2011-11-23 哈尔滨工业大学 Core holder and zeta electric potential measuring system and method using same
CN102323200B (en) * 2011-08-29 2013-01-09 南通市飞宇石油科技开发有限公司 Rotation mechanism of long rock core gripper
CN103336040B (en) * 2013-07-15 2015-01-21 东北石油大学 High-precision self-potential measuring device
CN111735875B (en) * 2020-07-21 2020-11-17 中南大学 Device and method for measuring radial acoustic characteristics of rock core

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87214736U (en) * 1987-10-22 1988-11-02 大庆石油管理局勘探开发研究院 Holding device for influent experiment of three-section rock core
CN2507005Y (en) * 2001-03-12 2002-08-21 石油大学(华东)石仪科技实业发展公司 Radial multi-layer rock core holder
CN2556632Y (en) * 2002-01-29 2003-06-18 大庆油田有限责任公司 Surround type sealed core holder
CN2613754Y (en) * 2003-04-18 2004-04-28 石油大学(华东)石油仪器仪表研究所 Preheatable constant-temp. three axial stress core holder
CN2655243Y (en) * 2003-07-10 2004-11-10 大庆油田有限责任公司 Multipurpose core clamp at high-temp high-pressure
CN1595098A (en) * 2004-06-24 2005-03-16 石油大学(北京) Rock core gripper for simulating formation multiple stress field coupling action
CN2932388Y (en) * 2006-05-25 2007-08-08 中国石化股份胜利油田分公司地质科学研究院 Slip-type ultrahigh temperature core catcher

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87214736U (en) * 1987-10-22 1988-11-02 大庆石油管理局勘探开发研究院 Holding device for influent experiment of three-section rock core
CN2507005Y (en) * 2001-03-12 2002-08-21 石油大学(华东)石仪科技实业发展公司 Radial multi-layer rock core holder
CN2556632Y (en) * 2002-01-29 2003-06-18 大庆油田有限责任公司 Surround type sealed core holder
CN2613754Y (en) * 2003-04-18 2004-04-28 石油大学(华东)石油仪器仪表研究所 Preheatable constant-temp. three axial stress core holder
CN2655243Y (en) * 2003-07-10 2004-11-10 大庆油田有限责任公司 Multipurpose core clamp at high-temp high-pressure
CN1595098A (en) * 2004-06-24 2005-03-16 石油大学(北京) Rock core gripper for simulating formation multiple stress field coupling action
CN2932388Y (en) * 2006-05-25 2007-08-08 中国石化股份胜利油田分公司地质科学研究院 Slip-type ultrahigh temperature core catcher

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