CN103940720B - A kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step - Google Patents
A kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step Download PDFInfo
- Publication number
- CN103940720B CN103940720B CN201410156962.6A CN201410156962A CN103940720B CN 103940720 B CN103940720 B CN 103940720B CN 201410156962 A CN201410156962 A CN 201410156962A CN 103940720 B CN103940720 B CN 103940720B
- Authority
- CN
- China
- Prior art keywords
- cylindrical shell
- rock core
- plug
- pressure
- rock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step, primarily of columniform cylindrical shell, plug, pressure cap, rock core cover, gripper brackets composition, the rock core cover 4 that rock core 5 is housed is arranged in cylindrical shell 3, the left and right end of rock core cover all has probe 16, cylindrical shell 3 and rock core have an annular space 6 between overlapping 4, and the two ends of cylindrical shell have fluid to pass in and out pipeline 9; There are pressure cap 2 and plug 1 in cylindrical shell 3 two ends, pressurization hole 12 and the rock core of plug left end overlap the axial compression filler port 10 of popping one's head in and are communicated with, the pressurization hole 14 of plug right-hand member is communicated with the confined pressure filler port 15 of annular space, packoff 7 is equipped with between each pressure cap 2 and cylindrical shell 3, sealing device comprises the soft seal circle of more than 3 or 3, have connecting hole between O-ring seal, the connecting hole of O-ring seal is communicated with the connecting hole 8 of plug.The present invention can be applicable to the experiment condition of high pressure high temperature, and it seals reliably, bear pressure reduction ability by force, and structure is simple, convenient disassembly.
Description
Technical field
The present invention relates to a kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step for measuring hydrocarbon-bearing pool reservoir rock physical parameter.
Background technology
Laboratory is when the physical parameter of measurement rock is as rock permeability, saturation degree etc., first with the sealing shroud of various material, rock core is sealed, then the rock core of sealing is put into rock core fastener, under the effect of axial compression, measure the handling capacity of fluid from one end of rock core to the other end.At present, the pressuring method of domestic and international rock core fastener mainly contains three types: the first is fluid pressure type, and it realizes the pressurization to rock sample by the liquid with certain pressure; The second is vapour-pressure type, and it uses air or nitrogen as pressure medium; The third is mechanical type, and it seals core sample side surface not by gas or liquid and other medium near mechanical ramming heavy wall rubber case.
In the middle of practical application, mechanical type mostly is manual pressure mode, and the control accuracy of pressure is difficult to grasp.At present, domestic and international Petroleum Geology Laboratory application is that the mode of air pressure and hydraulic pressure is pressurizeed, from result of use, when air pressure is lower for pressure, when hydraulic pressure is higher for pressure more widely.Under the pressuring method that above-mentioned two kinds of laboratories are conventional, the rubber tube of clamper easily damages, and causes its sealing property to reduce, can be corroded by Experimental Flowing Object time serious, due to the effect of pressure reduction during pressurization, make rock core pressure-bearing unstable, cause the error of core experiment larger.Along with the discovery of superhigh-temperature and-pressure hydrocarbon-bearing pool, need the experimental study of being correlated with to the fluid under its reservoir conditions, this just proposes higher technical requirement to the sealing means under experimental facilities pressuring method.In rock core fastener under above-mentioned two kinds of pressuring methods, the maximum problem faced is the sealing problem how realized under UHV (ultra-high voltage).
Summary of the invention
The object of the present invention is to provide a kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step, the experiment condition of high pressure high temperature (maximum working pressure (MOP) is more than 200MPa) can be applicable to, it seals reliably, bear pressure reduction ability by force, and structure is simple, convenient disassembly.
For reaching above technical purpose, the present invention by the following technical solutions.
A kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step, primarily of columniform cylindrical shell, plug, pressure cap, rock core cover, probe, gripper brackets composition, the rock core cover that rock core is housed is arranged in cylindrical shell, the left and right end of rock core cover all has probe, for the position of fixing rock core, have an annular space between cylindrical shell and rock core overlap, the pipeline that the two ends of cylindrical shell have Experimental Flowing Object to pass in and out, the rock core during this pipeline overlaps with rock core is communicated with, core holding unit support is had, for simulating the rock core under different hole drift angle state outside cylindrical shell, all there are pressure cap and plug in cylindrical shell two ends, pressure cap is between cylindrical shell and plug, two ends plug all there are pressurization hole and connecting hole, the pressurization hole of plug left end is communicated with axial compression filler port, by this pressurization hole, axle pressure is added to rock core, the pressurization hole of plug right-hand member is communicated with confined pressure filler port, confined pressure is added to annular space by this pressurization hole, packoff is equipped with between each pressure cap and cylindrical shell, sealing device comprises the soft seal circle of more than 3 or 3, this soft seal circle adopts fluororubber material, connecting hole is had between O-ring seal, connecting hole between described O-ring seal is communicated with the connecting hole of plug.
Described pressure cap is used for fixing plug, and described plug is used for static probe, and described probe is used for fixing rock core position.
Described cylindrical shell there is the leakage of oil indicator hole perpendicular to tubular axis.
After the plug of core holding unit is connected by pressure cap with cylindrical shell, suppress in connecting hole with force (forcing) pump, the pressure reduction between every grade of O-ring seal is the maximal value of single-stage soft seal pressure reduction.As being that 70MPa, 2-3 level can add 140MPa between 1-2 level, 3-4 level can add 210MPa, and pressurization can realize the end seals of the inner UHV (ultra-high voltage) of core holding unit step by step.
Compared with prior art, the present invention has following beneficial effect:
(1) adopt pressurization method step by step, solve sealing reliability problem during existing core holding unit super-high pressure work;
(2) with the position of the fixing rock core of probe, the unidirectional axial pressure in pressurization hole, decreases the volumetric errors that rock core axial displacement causes;
(3) rock core sealing shroud adopts special macromolecular material, make that rock core overlaps corrosion resistance more, the pressure reduction that bears is higher, sealing property is better, the rock core cover of this kind of material both ensure that the sealing property of the rock core cover of fluororubber material, and what greatly exceeded again traditional plumbous material rock core cover bears pressure reduction ability;
(4) rotate the cylindrical shell of core holding unit, the oil well rock core of different hole drift angle can be simulated.
Accompanying drawing explanation
Fig. 1 is the structural representation of UHV (ultra-high voltage) of the present invention adding pressure type seal rock heart clamp holder step by step.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Referring to Fig. 1.A kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step, primarily of columniform cylindrical shell, plug, pressure cap, rock core cover, gripper brackets composition, the rock core cover 4 that rock core 5 is housed is arranged in cylindrical shell 3, the left and right end of rock core cover all has probe 16, cylindrical shell 3 and rock core have an annular space 6 between overlapping 4, the pipeline 9 that the two ends of cylindrical shell have Experimental Flowing Object to pass in and out, the rock core 5 that this pipeline and rock core overlap in 4 is communicated with, and has core holding unit support 11 outside cylindrical shell 3; All there are pressure cap 2 and plug 1 in cylindrical shell 3 two ends, pressure cap 2 is between cylindrical shell 3 and plug 1, each plug all has pressurization hole and connecting hole, pressurization hole 12 and the rock core of plug left end overlap the axial compression filler port 10 of popping one's head in and are communicated with, the pressurization hole 14 of plug right-hand member is communicated with the confined pressure filler port 15 of annular space, packoff 7 is equipped with between each pressure cap 2 and cylindrical shell 3, sealing device comprises the soft seal circle of more than 3 or 3, this soft seal circle adopts fluororubber material, have connecting hole between O-ring seal, the connecting hole of O-ring seal is communicated with the connecting hole 8 of plug.
Described cylindrical shell there is the leakage of oil indicator hole 13 perpendicular to tubular axis.
Claims (2)
1. UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step, primarily of columniform cylindrical shell, plug, pressure cap, rock core cover, core holding unit support composition, it is characterized in that, the rock core cover (4) that rock core (5) is housed is arranged in cylindrical shell (3), the left and right end of rock core cover all has probe (16), an annular space (6) is had between cylindrical shell (3) and rock core cover (4), the pipeline (9) that the two ends of cylindrical shell have Experimental Flowing Object to pass in and out, this pipeline is communicated with the rock core (5) in rock core cover (4), has core holding unit support (11) outside cylindrical shell (3), all there are pressure cap (2) and plug (1) in cylindrical shell (3) two ends, pressure cap (2) is positioned between cylindrical shell (3) and plug (1), each plug all has pressurization hole and connecting hole, pressurization hole (12) and the rock core of the plug of cylindrical shell left end overlap the axial compression filler port (10) of popping one's head in and are communicated with, the pressurization hole (14) of the plug of cylindrical shell right-hand member is communicated with the confined pressure filler port (15) of annular space, packoff (7) is equipped with between each pressure cap (2) and cylindrical shell (3), sealing device comprises the soft seal circle of more than 3, this soft seal circle adopts fluororubber material, connecting hole is had between O-ring seal, the connecting hole of O-ring seal is communicated with the connecting hole (8) of plug.
2. UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step as claimed in claim 1, is characterized in that described cylindrical shell there is the leakage of oil indicator hole (13) perpendicular to tubular axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156962.6A CN103940720B (en) | 2014-04-18 | 2014-04-18 | A kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156962.6A CN103940720B (en) | 2014-04-18 | 2014-04-18 | A kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103940720A CN103940720A (en) | 2014-07-23 |
| CN103940720B true CN103940720B (en) | 2016-03-23 |
Family
ID=51188483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410156962.6A Active CN103940720B (en) | 2014-04-18 | 2014-04-18 | A kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103940720B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329065B (en) * | 2014-10-27 | 2017-01-11 | 中国石油化工股份有限公司 | Method for dismounting sand-filling simulation core for indoor experiment |
| CN104481521B (en) * | 2014-10-31 | 2019-06-25 | 中国石油化工股份有限公司 | A kind of rock core sealing leak testing process |
| CN104792971B (en) * | 2015-04-23 | 2016-07-13 | 中国石油天然气股份有限公司勘探开发研究院廊坊分院 | A kind of grasping system suitable in many specifications rock core |
| CN105842425B (en) * | 2016-05-23 | 2017-12-01 | 青岛中瑞泰软控科技股份有限公司 | A kind of core holding unit and dynamic filtration experimental provision |
| CN106383076B (en) * | 2016-08-19 | 2019-03-01 | 青岛石大石仪科技有限责任公司 | A kind of high temperature core clamping device and its experimental method |
| CN106093079B (en) * | 2016-08-22 | 2019-02-12 | 江苏联友科研仪器有限公司 | A kind of nonmetallic core holding unit of super-pressure |
| CN110823779B (en) * | 2019-11-19 | 2022-09-16 | 西南石油大学 | Rock core holder and combination formula rock core centre gripping model |
| CN112986287A (en) * | 2021-04-15 | 2021-06-18 | 中国科学院地质与地球物理研究所 | Ultrahigh-pressure nonmetal core holder |
| CN115184234A (en) * | 2022-07-01 | 2022-10-14 | 西南石油大学 | Ultrahigh pressure gas reservoir drilling fluid pollution evaluation experiment system and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4599891A (en) * | 1984-06-07 | 1986-07-15 | Temco, Inc. | TCH--tri-axial core holder |
| US4734649A (en) * | 1986-03-10 | 1988-03-29 | Western Atlas International, Inc. | Apparatus for measuring the resistivity of a sample |
| CN102778417B (en) * | 2011-05-13 | 2014-09-03 | 中国石油化工股份有限公司 | Ultrahigh pressure and high temperature core holder |
| CN102288629B (en) * | 2011-07-01 | 2014-04-16 | 中联煤层气国家工程研究中心有限责任公司 | Core holder |
| WO2013171544A1 (en) * | 2012-05-15 | 2013-11-21 | Schlumberger Canada Limited | Nmr analysis of a core sample employing an open permanent magnet removable from a core holder |
| CN102707032B (en) * | 2012-05-17 | 2015-02-25 | 中国石油天然气股份有限公司 | Triaxial Core Holder |
| CN103114849B (en) * | 2013-01-25 | 2015-09-09 | 中国石油天然气股份有限公司 | core sealing device and sealing method thereof |
-
2014
- 2014-04-18 CN CN201410156962.6A patent/CN103940720B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103940720A (en) | 2014-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103940720B (en) | A kind of UHV (ultra-high voltage) adding pressure type seal rock heart clamp holder step by step | |
| CN209875145U (en) | Oil gas well cement sheath sealing integrity testing arrangement | |
| CN108956854B (en) | Device for evaluating plugging performance of temporary plugging steering fluid and testing method thereof | |
| CN102797455A (en) | Rock stratum fracture detecting device | |
| CN203616063U (en) | Valve oil seal static sealing performance detection device | |
| CN101832128B (en) | Active device and method for measuring pressure of coal-bed gas | |
| CN203430573U (en) | Portable coal mine underground gas extraction parameter detection device | |
| CN105257281A (en) | Method for detecting casing leakage | |
| CN208721346U (en) | Packer testing device and system | |
| CN204661306U (en) | Diaphragm seal pressure transmitter vacuum oil filling device | |
| CN206192571U (en) | Type of falling U pipe differential gauge | |
| CN110927359B (en) | Experimental test device and method for gas loss content in low-permeability porous medium coring process | |
| CN205333483U (en) | Gas permeability test system | |
| CN103149137A (en) | Constant-pressure steady-state gas permeability measuring instrument | |
| CN210108909U (en) | Take water-cooled rock core holder | |
| CN102418840A (en) | Gas-collecting sleeve | |
| CN201772975U (en) | Experiment device for detecting sealing properties of expanded capsule and sealing liquid | |
| CN203688415U (en) | Gradient core holding unit with pressure guide ring | |
| CN201687466U (en) | Active coal seam gas pressure tester | |
| CN101957252B (en) | Experiment device for detecting sealing performance of swelling capsule and sealing liquid | |
| CN210089917U (en) | Cone sealing reversing shuttle valve | |
| CN209485930U (en) | Measurement system for water shutoff effect of profile control water shutoff agent | |
| CN206270212U (en) | A kind of screw type coal core clamper | |
| CN202745859U (en) | Rock stratum crack detection device | |
| CN206671142U (en) | The sealed multi-measuring point oil-gas mining analogue means of pyrocondensation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |