CN106324214A - Major-diameter core capillary pressure curve and bound water saturation measuring apparatus - Google Patents
Major-diameter core capillary pressure curve and bound water saturation measuring apparatus Download PDFInfo
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- CN106324214A CN106324214A CN201510380173.5A CN201510380173A CN106324214A CN 106324214 A CN106324214 A CN 106324214A CN 201510380173 A CN201510380173 A CN 201510380173A CN 106324214 A CN106324214 A CN 106324214A
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Abstract
The invention provides a major-diameter core capillary pressure curve and bound water saturation measuring apparatus. The major-diameter core capillary pressure curve and bound water saturation measuring apparatus comprises an upper bulkhead, an upper pressure cap, a holder cylindrical shell, a rock core chamber, a semipermeable separator plate, a pressure balance glue pad, a lower bulkhead and a pressure balance pipe wire. The measuring apparatus has the advantages that the structure is simple, operation and usage are easy; the whole measuring apparatus employs a high intensity metal material which has good overpressure resistant effect, the rock cores, the semipermeable separator plate and a screen mesh are put in the rock core chamber, the screen mesh can be used for uniformly distributing the pressure at the lower end of the semipermeable separator plate, so that the semipermeable separator plate can be protected. The measuring apparatus realizes the major diameter rock sample bound water saturation measurement, and the result is stable and accurate, and provides the base for the major-diameter rock core rock physical experiment research and rock physical parameter determination.
Description
Technical field
The invention belongs to large diameter core (baffle method) capillary pressure curve in petrophysics experiment measurement apparatus and irreducible water saturation measurement apparatus.
Background technology:
Along with going deep into and the progress of exploration engineering of oil-gas exploration, Heterogeneous reservoir has become the target zone position of oil-gas exploration, special Geophysical Properties based on such reservoir lithology, physical property, pore structure, anisotropism 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 it is applicable to minor diameter rock core capillary pressure curve, the measurement of irreducible water saturation, the most inapplicable due to rock sample dimensional problem to large diameter core.Therefore, for solving the experiment measurement of large diameter core capillary pressure curve and irreducible water saturation, it is necessary to develop and be applicable to large diameter core capillary pressure curve and irreducible water saturation measurement apparatus.
The domestic patent about large diameter core capillary pressure curve and irreducible water saturation measurement apparatus have not been reported.Patent of invention similarly is " 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, it is suitable for minor diameter (2.5cm) rock core, use high pressure nitrogen displacement, calorstat temperature control, pressure 70MPa, heatproof 150 DEG C, but this invention device, it is not suitable for large diameter core, it is impossible to provide capillary pressure curve data.Additionally, patent publication No. is respectively the patent of invention " semi-transparent partition rock core capillary pressure resistivity test device " of CN102519831A, CN202583323U and CNIO2621034A, " a kind of clamper for semi-permeable plate method capillary pressure resistivity translocation " and " oil reservoir capillary pressure curve analyzer under high-temperature and high-pressure conditions ", three all can measure capillary pressure curve, but the above two are mainly based on resistivity measurement, because wanting measured resistivity, design complexity；Latter is applicable to measure capillary pressure curve under reservoir conditions, designs the most complex；And three kinds of devices are all applicable to minor diameter (2.5cm) rock core, helpless to large diameter core.
Summary of the invention:
It is an object of the invention to as solving above technical problem, it is provided that a kind of large diameter core capillary pressure curve realizing large diameter core capillary pressure curve and irreducible water saturation and irreducible water saturation measurement apparatus.
Large diameter core capillary pressure curve and irreducible water saturation measurement apparatus technical scheme be: includes upper plug head, upper pressing cap, clamper cylinder, core chamber, partly ooze dividing plate, pressure balance 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 cylindrical portion seals grafting with clamper cylinder and coordinates, upper pressing cap by being fixed on clamper cylinder upper end by upper plug head after screw thread and clamper cylinder external connection, lower end cap is tightly connected with clamper cylinder by external screw thread, and the prefabricated step in the most involutory portion, partly ooze dividing plate, pressure balance rubber cushion is clamped and fixed at the step of lower end cap and clamper cylinder, lower end cap is provided with liquid outlet through hole and pressure balance through hole, pressure-equalizing line is connected between pressurization through hole and the pressure balance through hole of lower end cap of upper plug head, liquid outlet connects metering and receives device, partly oozing above dividing plate and pressure balance rubber cushion in core chamber's placing clamp holder cylinder.
Such scheme farther includes: the liquid outlet through hole of lower end cap is located at the axle center of lower end cap, and is provided with annular groove along the periphery of through hole.
Upper plug head, lower end cap and clamper cylinder joint portion are provided with high-pressure seal ring.
Whole measurement apparatus uses high-strength metal material, pressure effective, is sealed by upper plug head, upper pressing cap, lower end cap and sealing ring.Partly ooze dividing plate and use special nylon material, it is ensured that displacement process only passes through wetting phase.
In displacement process, upper and lower end plug is simultaneously connected with the source gas that pressure is equal, it is ensured that partly oozes dividing plate pressure at two ends balance, partly oozes dividing plate with protection.
The measurement apparatus of the present invention, has simple in construction, it is easy to operates and uses；Whole device uses high-strength metal material, pressure effective；Rock core is placed by core chamber, partly oozes dividing plate and screen cloth, and it is uniform that screen cloth act as guaranteeing partly to ooze dividing plate lower end pressure distribution, protects dividing plate.Achieving the measurement of major diameter rock sample irreducible water saturation, result is stablized accurate.Determination for 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 apparatus structure chart.
In figure, 1 upper plug head, 2 upper pressing caps, 3 sealing rings, 4 clamper cylinders, 5 core chamber, 6 sealing rings, 7 half ooze dividing plate, 8 pressure balance rubber cushions, 9 lower end caps, and 10, liquid outlet, 11 pressure-equalizing lines.
Detailed description of the invention
Referring to the drawings 1, large diameter core capillary pressure curve and irreducible water saturation measurement apparatus include upper plug head 1, upper pressing cap 2, clamper cylinder 4, core chamber 5, partly ooze dividing plate 7, pressure balance 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 cylindrical portion seals grafting with clamper cylinder and coordinates, upper pressing cap 2 by being fixed on clamper cylinder 4 upper end by upper plug head 1 after screw thread and clamper cylinder 4 external connection, lower end cap 9 is tightly connected with clamper cylinder 4 by external screw thread, and the prefabricated step in the most involutory portion, partly ooze dividing plate 7, pressure balance rubber cushion 8 is clamped and fixed at the step of lower end cap 9 and clamper cylinder 4, lower end cap 9 is provided with liquid outlet through hole and pressure balance through hole, pressure-equalizing line 11 is connected between pressurization through hole and the pressure balance through hole of lower end cap 9 of upper plug head 1, liquid outlet 10 connects metering and receives device, partly oozing above dividing plate 7 and pressure balance rubber cushion 8 in core chamber 5 placing clamp holder cylinder.
The liquid outlet through hole of lower end cap 9 is located at the axle center 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, it is provided with high-pressure seal ring 3 and 6 at upper plug head 1, lower end cap 9 with clamper cylinder 4 joint portion.
This device realizes the irreducible water saturation of diameter≤9.0cm rock sample and measures, and displacement pressure reaches as high as 10MPa.
During use, rock core is loaded core chamber 2, open gas source control system, set displacement pressure ladder, moveable water in displacement rock sample, it is achieved large diameter core capillary pressure curve and the measurement of irreducible water saturation.
Claims (3)
1. large diameter core capillary pressure curve and irreducible water saturation measurement apparatus, including clamper cylinder and be connected to the upper plug head at clamper cylinder two ends, lower end cap, and it is placed in the core chamber in clamper cylinder, it is characterized in that: also include upper pressing cap, partly ooze dividing plate, pressure balance rubber cushion and pressure-equalizing line；Wherein, upper plug head is T-shaped structure, its projection is axially arranged with pressurization through hole, its cylindrical portion seals grafting with clamper cylinder and coordinates, upper pressing cap by being fixed on clamper cylinder upper end by upper plug head after screw thread and clamper cylinder external connection, lower end cap is tightly connected with clamper cylinder by external screw thread, and the prefabricated step in the most involutory portion, partly ooze dividing plate, pressure balance rubber cushion is clamped and fixed at the step of lower end cap and clamper cylinder, lower end cap is provided with liquid outlet through hole and pressure balance through hole, pressure-equalizing line is connected between pressurization through hole and the pressure balance through hole of lower end cap of upper plug head, liquid outlet connects metering and receives device, partly oozing above dividing plate and pressure balance rubber cushion in core chamber's placing clamp holder cylinder.
Large diameter core capillary pressure curve the most according to claim 1 and irreducible water saturation measurement apparatus, is characterized in that: the liquid outlet through hole of lower end cap is located at the axle center of lower end cap, and is provided with annular groove along the periphery of through hole.
Large diameter core capillary pressure curve the most according to claim 1 and 2 and irreducible water saturation measurement apparatus, is characterized in that: upper plug head, lower end cap and clamper cylinder joint portion are provided with high-pressure seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380173.5A CN106324214A (en) | 2015-07-02 | 2015-07-02 | Major-diameter core capillary pressure curve and bound water saturation measuring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510380173.5A CN106324214A (en) | 2015-07-02 | 2015-07-02 | Major-diameter core capillary pressure curve and bound water saturation measuring apparatus |
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| CN106324214A true CN106324214A (en) | 2017-01-11 |
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| CN201510380173.5A Pending CN106324214A (en) | 2015-07-02 | 2015-07-02 | Major-diameter core capillary pressure curve and bound water saturation measuring apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725046A (en) * | 2017-10-17 | 2018-02-23 | 西南石油大学 | The apparatus and method of capillary force during a kind of evaluation reservoir water |
| CN113029898A (en) * | 2021-02-22 | 2021-06-25 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
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| CN2872359Y (en) * | 2006-03-06 | 2007-02-21 | 赵江青 | Array semi-penetrating dummy hollow-billet pressure-resistance combined inspector |
| CN102519831A (en) * | 2011-10-26 | 2012-06-27 | 中国石油集团西部钻探工程有限公司 | Semi-permeable partition rock core capillary pressure and resistivity measuring device |
| CN102621034A (en) * | 2012-03-29 | 2012-08-01 | 中国石油大学(华东) | Reservoir capillary pressure curve determinator under high temperature and pressure |
| CN202583323U (en) * | 2012-05-25 | 2012-12-05 | 中国石油大学(华东) | Clamp holder for semi-permeable partition board method to jointly detect capillary pressure resistivity |
| CN103278418A (en) * | 2013-05-15 | 2013-09-04 | 西南石油大学 | Determination device and method of constraint irreducible water saturation in reservoir rock core |
| CN103698216A (en) * | 2014-01-02 | 2014-04-02 | 西南石油大学 | Capillary pressure stress sensitivity test device and capillary pressure stress sensitivity test method |
| CN103868841A (en) * | 2014-03-28 | 2014-06-18 | 海安县石油科研仪器有限公司 | Experimental device for determining very low shale permeability and membrane efficiency |
| CN204903529U (en) * | 2015-07-02 | 2015-12-23 | 中石化石油工程技术服务有限公司 | Major diameter rock core hollow billet pressure curve and constraint water saturation measuring device |
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2015
- 2015-07-02 CN CN201510380173.5A patent/CN106324214A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2872359Y (en) * | 2006-03-06 | 2007-02-21 | 赵江青 | Array semi-penetrating dummy hollow-billet pressure-resistance combined inspector |
| CN102519831A (en) * | 2011-10-26 | 2012-06-27 | 中国石油集团西部钻探工程有限公司 | Semi-permeable partition rock core capillary pressure and resistivity measuring device |
| CN102621034A (en) * | 2012-03-29 | 2012-08-01 | 中国石油大学(华东) | Reservoir capillary pressure curve determinator under high temperature and pressure |
| CN202583323U (en) * | 2012-05-25 | 2012-12-05 | 中国石油大学(华东) | Clamp holder for semi-permeable partition board method to jointly detect capillary pressure resistivity |
| CN103278418A (en) * | 2013-05-15 | 2013-09-04 | 西南石油大学 | Determination device and method of constraint irreducible water saturation in reservoir rock core |
| CN103698216A (en) * | 2014-01-02 | 2014-04-02 | 西南石油大学 | Capillary pressure stress sensitivity test device and capillary pressure stress sensitivity test method |
| CN103868841A (en) * | 2014-03-28 | 2014-06-18 | 海安县石油科研仪器有限公司 | Experimental device for determining very low shale permeability and membrane efficiency |
| CN204903529U (en) * | 2015-07-02 | 2015-12-23 | 中石化石油工程技术服务有限公司 | Major diameter rock core hollow billet pressure curve and constraint water saturation measuring device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725046A (en) * | 2017-10-17 | 2018-02-23 | 西南石油大学 | The apparatus and method of capillary force during a kind of evaluation reservoir water |
| CN113029898A (en) * | 2021-02-22 | 2021-06-25 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
| CN113029898B (en) * | 2021-02-22 | 2022-04-15 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
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Application publication date: 20170111 |