CN204903529U - Major diameter rock core hollow billet pressure curve and constraint water saturation measuring device - Google Patents
Major diameter rock core hollow billet pressure curve and constraint water saturation measuring device Download PDFInfo
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- CN204903529U CN204903529U CN201520466940.XU CN201520466940U CN204903529U CN 204903529 U CN204903529 U CN 204903529U CN 201520466940 U CN201520466940 U CN 201520466940U CN 204903529 U CN204903529 U CN 204903529U
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Abstract
The utility model provides a realize major diameter rock core hollow billet pressure curve and constraint water saturation's major diameter rock core hollow billet pressure curve and constraint water saturation measuring device. Press cap, holder barrel, rock core room on, partly ooze baffle, pressure balance cushion, end cap and pressure balance pipeline down including last end cap. The utility model has the advantages of simple structure, easily operation and use, whole device adopts high strength metal material, and is withstand voltage effectual, the rock core is placed to the rock core room, partly oozes baffle and screen cloth, and the screen cloth effect is even for ensureing partly to ooze baffle lower extreme pressure distribution, the protection baffle. Realized major diameter rock specimen constraint water saturation's measurement, the result is stable accurate. Sureness for physical experiment research of major diameter rock core rock and rock physical parameter is laid a good foundation.
Description
Technical field
The utility model belongs to large diameter core (baffle method) capillary pressure curve in petrophysics experiment measurement mechanism and irreducible water saturation measurement mechanism.
Background technology:
Along with oil-gas exploration deeply and the progress of exploration engineering, Heterogeneous reservoir has become the zone of interest position of oil-gas exploration, based on the special Geophysical Properties of such reservoir lithology, physical property, pore texture, nonuniformity etc., the research of large diameter core petrophysics experiment analytical technology becomes inevitable with carrying out.Capillary pressure curve and irreducible water saturation are the important parameters of Study In Reservoir physical property, pore structure characteristic.But be applicable to the measurement of minor diameter rock core capillary pressure curve, irreducible water saturation, to large diameter core because rock sample dimensional problem is just inapplicable.Therefore, for solving the experiment measuring of large diameter core capillary pressure curve and irreducible water saturation, be necessary that development is applicable to large diameter core capillary pressure curve and irreducible water saturation measurement mechanism.
The domestic patent about large diameter core capillary pressure curve and irreducible water saturation measurement mechanism have not been reported.Patent of invention is similarly " determinator and the method that retrain irreducible water saturation in a kind of reservoir core ", patent publication No. CN103278418A.The invention provides the determinator retraining irreducible water saturation in a kind of reservoir core, be suitable for minor diameter (2.5cm) rock core, adopt high pressure nitrogen displacement, constant temperature oven temperature control, withstand voltage 70MPa, heatproof 150 DEG C, but this contrive equipment, be not suitable for large diameter core, capillary pressure curve data can not be provided.In addition, patent publication No. is respectively patent of invention " semi-transparent partition rock core capillary pressure resistivity test device ", " a kind of clamper for the translocation of semi-permeable plate method capillary pressure resistivity " and " under high-temperature and high-pressure conditions oil reservoir capillary pressure curve analyzer " of CN102519831A, CN202583323U and CNIO2621034A, three all can measure capillary pressure curve, but the above two are mainly based on resistivity measurement, because want measured resistivity, design is complicated; Rear one is applicable to measure capillary pressure curve under reservoir conditions, and design is also comparatively complicated; And three kinds of devices are all applicable to minor diameter (2.5cm) rock core, helpless to large diameter core.
Summary of the invention:
The purpose of this utility model is for solving above technical matters, provides a kind of the large diameter core capillary pressure curve and the irreducible water saturation measurement mechanism that realize large diameter core capillary pressure curve and irreducible water saturation.
Large diameter core capillary pressure curve and irreducible water saturation measurement mechanism technical scheme are: comprise upper plug head, upper pressing cap, clamper cylindrical shell, core chamber, partly ooze dividing plate, pressure equilibrium rubber cushion, lower end cap and pressure-equalizing line, wherein, upper plug head is T-shaped structure, its projection is axially arranged with pressurization through hole, its barrel portion and clamper cylindrical shell seal grafting and coordinate, upper plug head is fixed on clamper cylindrical shell upper end after being connected with clamper cylindrical shell outside by screw thread by upper pressing cap, lower end cap is tightly connected by external thread and clamper cylindrical shell, and the axially prefabricated step in involutory portion, partly ooze dividing plate, pressure equilibrium rubber cushion is clamped and fixed in the step place of lower end cap and clamper cylindrical shell, lower end cap is provided with liquid outlet through hole and pressure equilibrium through hole, pressure-equalizing line is connected between the pressurization through hole of upper plug head and the pressure equilibrium through hole of lower end cap, liquid outlet connects metering receiving trap, partly oozing above dividing plate and pressure equilibrium rubber cushion in clamper cylindrical shell is placed by core chamber.
Such scheme comprises further: the liquid outlet through hole of lower end cap is located at the axle center place of lower end cap, and is provided with annular groove along the periphery of through hole.
Upper plug head, lower end cap and clamper cylindrical shell joint portion are provided with high-pressure seal ring.
Whole measurement mechanism adopts high-strength metal material, withstand voltage effective, is sealed by upper plug head, upper pressing cap, lower end cap and O-ring seal.Partly ooze dividing plate and adopt special nylon material, guarantee that displacement process only passes through wetting phase.
The upper and lower end plug source gas that Bonding pressure is equal simultaneously in displacement process, guarantees partly to ooze dividing plate pressure at two ends balance, partly oozes dividing plate to protect.
Measurement mechanism of the present utility model, has structure simple, is easy to operation and uses; Whole device adopts high-strength metal material, withstand voltage effective; Rock core is placed by core chamber, partly oozes dividing plate and screen cloth, and screen cloth act as to be guaranteed partly to ooze dividing plate lower end pressure distribution evenly, protection dividing plate.Achieve the measurement of major diameter rock sample irreducible water saturation, result is accurately stable.For the determination of the research of large diameter core petrophysics experiment and petrophysical parameter is laid a good foundation.
Accompanying drawing explanation
Fig. 1 is large diameter core capillary pressure curve and irreducible water saturation measurement mechanism structural drawing.
In figure, 1 upper plug head, 2 upper pressing caps, 3 O-ring seals, 4 clamper cylindrical shells, 5 core chamber, 6 O-ring seals, 7 half ooze dividing plate, 8 pressure equilibrium rubber cushions, 9 lower end caps, 10, liquid outlet, 11 pressure-equalizing lines.
Embodiment
With reference to accompanying drawing 1, large diameter core capillary pressure curve and irreducible water saturation measurement mechanism comprise upper plug head 1, upper pressing cap 2, clamper cylindrical shell 4, core chamber 5, partly ooze dividing plate 7, pressure equilibrium rubber cushion 8, lower end cap 9 and pressure-equalizing line 11.
Wherein, upper plug head 1 is T-shaped structure, its projection is axially arranged with pressurization through hole, its barrel portion and clamper cylindrical shell seal grafting and coordinate, upper plug head 1 is fixed on clamper cylindrical shell 4 upper end after being connected with clamper cylindrical shell 4 outside by screw thread by upper pressing cap 2, lower end cap 9 is tightly connected by external thread and clamper cylindrical shell 4, and the axially prefabricated step in involutory portion, partly ooze dividing plate 7, pressure equilibrium rubber cushion 8 is clamped and fixed in the step place of lower end cap 9 and clamper cylindrical shell 4, lower end cap 9 is provided with liquid outlet through hole and pressure equilibrium through hole, pressure-equalizing line 11 is connected between the pressurization through hole of upper plug head 1 and the pressure equilibrium through hole of lower end cap 9, liquid outlet 10 connects metering receiving trap, partly oozing above dividing plate 7 and pressure equilibrium rubber cushion 8 in clamper cylindrical shell is placed by core chamber 5.
The liquid outlet through hole of lower end cap 9 is located at the axle center place of lower end cap 9, and is provided with annular groove along the periphery of through hole, the preferred spherical groove of groove.
In order to improve sealing, be provided with high-pressure seal ring 3 and 6 at upper plug head 1, lower end cap 9 with clamper cylindrical shell 4 joint portion.
The irreducible water saturation that this device realizes diameter≤9.0cm rock sample is measured, and displacement pressure reaches as high as 10MPa.
During use, rock core is loaded core chamber 2, open gas source control system, setting displacement pressure ladder, moveable water in displacement rock sample, realizes the measurement of large diameter core capillary pressure curve and irreducible water saturation.
Claims (3)
1. large diameter core capillary pressure curve and irreducible water saturation measurement mechanism, comprise clamper cylindrical shell and the upper plug head, the lower end cap that are connected to clamper cylindrical shell two ends, and the core chamber be placed in clamper cylindrical shell, it is characterized in that: also comprise upper pressing cap, partly ooze dividing plate, pressure equilibrium rubber cushion and pressure-equalizing line, wherein, upper plug head is T-shaped structure, its projection is axially arranged with pressurization through hole, its barrel portion and clamper cylindrical shell seal grafting and coordinate, upper plug head is fixed on clamper cylindrical shell upper end after being connected with clamper cylindrical shell outside by screw thread by upper pressing cap, lower end cap is tightly connected by external thread and clamper cylindrical shell, and the axially prefabricated step in involutory portion, partly ooze dividing plate, pressure equilibrium rubber cushion is clamped and fixed in the step place of lower end cap and clamper cylindrical shell, lower end cap is provided with liquid outlet through hole and pressure equilibrium through hole, pressure-equalizing line is connected between the pressurization through hole of upper plug head and the pressure equilibrium through hole of lower end cap, liquid outlet connects metering receiving trap, partly oozing above dividing plate and pressure equilibrium rubber cushion in clamper cylindrical shell is placed by core chamber.
2. large diameter core capillary pressure curve according to claim 1 and irreducible water saturation measurement mechanism, is characterized in that: the liquid outlet through hole of lower end cap is located at the axle center place of lower end cap, and is provided with annular groove along the periphery of through hole.
3. large diameter core capillary pressure curve according to claim 1 and 2 and irreducible water saturation measurement mechanism, is characterized in that: upper plug head, lower end cap and clamper cylindrical shell joint portion are provided with high-pressure seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520466940.XU CN204903529U (en) | 2015-07-02 | 2015-07-02 | Major diameter rock core hollow billet pressure curve and constraint water saturation measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520466940.XU CN204903529U (en) | 2015-07-02 | 2015-07-02 | Major diameter rock core hollow billet pressure curve and constraint water saturation measuring device |
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| CN204903529U true CN204903529U (en) | 2015-12-23 |
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| CN201520466940.XU Active CN204903529U (en) | 2015-07-02 | 2015-07-02 | Major diameter rock core hollow billet pressure curve and constraint water saturation measuring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606787A (en) * | 2015-12-31 | 2016-05-25 | 中国石油天然气股份有限公司 | Device and method for testing capillary pressure curve of rock core |
| CN106324214A (en) * | 2015-07-02 | 2017-01-11 | 中石化石油工程技术服务有限公司 | Major-diameter core capillary pressure curve and bound water saturation measuring apparatus |
| CN107255613A (en) * | 2017-07-07 | 2017-10-17 | 西南石油大学 | A kind of dynamic capillary force experimental evaluation system of reservoir rockses |
| US10633574B2 (en) | 2017-08-02 | 2020-04-28 | Saudi Arabian Oil Company | Compositions and methods to recover irreducible water for enhanced formation evaluation |
-
2015
- 2015-07-02 CN CN201520466940.XU patent/CN204903529U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324214A (en) * | 2015-07-02 | 2017-01-11 | 中石化石油工程技术服务有限公司 | Major-diameter core capillary pressure curve and bound water saturation measuring apparatus |
| CN105606787A (en) * | 2015-12-31 | 2016-05-25 | 中国石油天然气股份有限公司 | Device and method for testing capillary pressure curve of rock core |
| CN105606787B (en) * | 2015-12-31 | 2018-01-05 | 中国石油天然气股份有限公司 | Device and method for testing capillary pressure curve of rock core |
| CN107255613A (en) * | 2017-07-07 | 2017-10-17 | 西南石油大学 | A kind of dynamic capillary force experimental evaluation system of reservoir rockses |
| US10633574B2 (en) | 2017-08-02 | 2020-04-28 | Saudi Arabian Oil Company | Compositions and methods to recover irreducible water for enhanced formation evaluation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220210 Address after: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: Sinopec Jingwei Co.,Ltd. Patentee after: Shengli logging company of Sinopec Jingwei Co.,Ltd. Address before: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: Logging company of Sinopec Shengli Petroleum Engineering Co., Ltd |
|
| TR01 | Transfer of patent right |