CN113125676A - Oil and gas conventional reservoir sample joint test method - Google Patents
Oil and gas conventional reservoir sample joint test method Download PDFInfo
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- CN113125676A CN113125676A CN202110320579.XA CN202110320579A CN113125676A CN 113125676 A CN113125676 A CN 113125676A CN 202110320579 A CN202110320579 A CN 202110320579A CN 113125676 A CN113125676 A CN 113125676A
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- 238000010998 test method Methods 0.000 title claims abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 63
- 239000011435 rock Substances 0.000 claims abstract description 30
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 9
- 230000000704 physical effect Effects 0.000 claims abstract description 9
- 238000005481 NMR spectroscopy Methods 0.000 claims abstract description 8
- 239000002734 clay mineral Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000003921 particle size analysis Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 11
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 244000264242 Descurainia sophia Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means, e.g. by light scattering, diffraction, holography or imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/225—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material using electron or ion
- G01N23/2251—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material using electron or ion using incident electron beams, e.g. scanning electron microscopy [SEM]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
- G01N24/081—Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity
Abstract
A joint test method for oil and gas conventional reservoir samples is characterized in that a first core body, a second core body, a third core body, a fourth core body, a fifth core body, a sixth core body and a seventh core body are obtained from selected core samples respectively, and the first core body is subjected to physical property test, nuclear magnetic resonance test and conventional mercury intrusion test; performing a particle size analysis test on the second core body; performing cast body slice identification on the third core body; carrying out polarizing sheet identification on the fourth rock core body; carrying out whole rock analysis test on the fifth rock core body; testing the relative content of clay minerals of the sixth core body; and carrying out scanning electron microscope test on the seventh core body. The method of the invention not only saves samples, but also enables the experimental results to be corresponding, enhances the comparability of a plurality of experimental data, makes the reservoir evaluation more comprehensive and accurate, and can greatly improve the reservoir prediction precision.
Description
Technical Field
The invention relates to a joint test method for an oil and gas conventional reservoir sample, and belongs to the technical field of oil and gas exploration in the petroleum industry.
Background
In the conventional reservoir test of present oil gas, because different professional fields, the project that different researcher required the test and many-sided differences such as required test result accuracy, so often can appear from sample design, gather the analysis and all go on according to demand separately, the same well section of same exploratory well same position of appearance gathers the rock core many times, send out a sample detection and analysis many times, both extravagant precious rock core sample has increased the exploration cost, carried out a large amount of reworking again, very big reduction work efficiency. In addition, due to the fact that planning and arrangement cannot be carried out comprehensively, experimental test projects carried out by partial samples are not complete, original analysis test data show that missing items are obvious in sample conveying condition, and a plurality of parallel test projects of the same core sample do not correspond to each other. The test items and results are not strong in correspondence, so that comprehensive, detailed and accurate bases are lacked when reservoir evaluation and other aspects are researched, and the influence on reservoir evaluation research is large.
Disclosure of Invention
In order to overcome the defects of the existing testing process, the invention provides a combined testing method for oil and gas conventional reservoir samples.
A joint test method for oil and gas conventional reservoir samples comprises the following steps:
determining the position of a rock core sample to be tested, and acquiring a rock core column;
cutting the obtained core column to respectively obtain a first core body, a second core body, a third core body, a fourth core body, a fifth core body, a sixth core body and a seventh core body;
preparing a sample of the first core body, and placing the obtained sample in a helium porosity instrument and a gas permeability instrument for physical property test; after the physical property test is finished, preparing a sample of the first core body again, and placing the obtained sample in a low-temperature nano-porosity analyzer for nuclear magnetic resonance test; after the nuclear magnetic resonance test is finished, sample preparation is carried out on the first core body again, and the obtained sample is placed in a mercury intrusion instrument for conventional mercury intrusion test;
preparing a sample of the second rock core body, and placing the obtained sample in a laser particle size analyzer for particle size analysis and test;
preparing a sample of the third rock core body, and putting the obtained sample in a polarizing microscope for identifying a cast body slice;
preparing a sample of the fourth rock core body, and putting the obtained sample in a polarizing microscope for polarizing slice identification;
preparing a sample of the fifth rock core body, and placing the obtained sample in an X-ray diffractometer for carrying out a whole rock analysis test;
preparing a sample of the sixth rock core body, and placing the obtained sample in an X-ray diffractometer for testing the relative content of clay minerals;
and preparing a sample of the seventh core body, and placing the obtained sample in a scanning electron microscope instrument for scanning electron microscope testing.
Further, the first core body is a cylinder with the diameter and the height of 25mm and 25mm respectively; the second rock core body is a block with the length, width and height of 3cm or a cylinder with the diameter of 2.5cm and the height of more than 2 cm; the third rock core body is a block with the length, width and height of 3cm or a cylinder with the diameter of 2.5cm and the height of more than 2 cm; the fourth core body is a block with the length, width and height of 3cm or a cylinder with the diameter of 2.5cm and the height of more than 2 cm; the fifth rock core body is 10g-20 g; the sixth core body is 10g-20 g; the seventh core body is a block body with the length, width and height of 10mm, 10mm and 10mm respectively.
The method adopts the same sample, different professional parallel detections and combination of conventional and unconventional projects, so that the sample is saved, the experimental results are corresponding, the comparability of multiple experimental data is enhanced, the reservoir evaluation is more comprehensive and accurate, and the reservoir prediction precision can be greatly improved.
Detailed Description
First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be specifically described below by way of example, but all the descriptions are for illustrative purposes only and should not be construed as limiting the present invention in any way. Furthermore, any individual technical features described or implicit in the embodiments mentioned herein may still be continued in any combination or subtraction between these technical features (or their equivalents) to obtain still further embodiments of the invention that may not be mentioned directly herein.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The conventional reservoir sample joint test process of the X45 well is characterized in that the same sample, different professional parallel tests and conventional and unconventional projects are combined, so that the sample is saved, the comparability of multiple experimental data is enhanced, and the reservoir prediction precision is greatly improved. The defects that an experimental test project carried out by original analysis test data is incomplete, a plurality of parallel test projects of the same core sample do not correspond to each other, precious core samples are wasted, and the reservoir evaluation research is greatly influenced are overcome.
In this embodiment, a conventional reservoir sample of an X45 well is used as a test object to perform a combined test, which includes the following steps:
selecting a position of a test core sample after the core sample to be tested is selected;
drilling a core pillar with the diameter of 25 x 100mm by using a core drilling machine;
cutting a core column with the diameter of 25 x 25mm by using a table type slicing machine, preparing a sample of the core column according to the specification of the sample required by the physical property test, and placing the prepared sample in a helium porosity meter and a gas permeability meter for the physical property test; after the physical property test is finished, according to the sample specification required by nuclear magnetic resonance, preparing a sample for the small core column, and placing the prepared sample in a low-temperature nano-porosity analyzer for nuclear magnetic resonance test; after the nuclear magnetic resonance test is finished, preparing a sample for the core pillar according to the sample specification required by the conventional mercury intrusion, and putting the prepared sample in a mercury intrusion instrument for the conventional mercury intrusion test;
cutting a small core column with the diameter of 25 x 25mm to obtain blocks with the length, width and height of 3cm or columns with the diameter of 2.5cm and the height of more than 2cm when a physical property test sample is cut from the small core column, preparing the small core column according to the sample specification required by the particle size analysis test, and placing the prepared sample in a laser particle size analyzer for particle size analysis test;
when the samples required by the granularity analysis test are cut, continuously cutting the residual core columns into blocks with the length, width and height of 3cm or columns with the diameter of 2.5cm and the height of more than 2cm, and using the blocks or columns to identify and prepare samples for the casting body slices;
when the samples required by the identification of the cast body slice are cut, the residual core column is continuously cut into blocks with the length, the width and the height of each 3cm or columns with the diameter of 2.5cm and the height of more than 2cm, the blocks are used for identifying and preparing the sample of the polarized light slice, the sample preparation is carried out on the small core column according to the specification of the samples required by the identification of the polarized light slice, and the prepared sample is placed in a polarized light microscope for identifying the polarized light slice;
continuously cutting 10g-20g of core samples from the residual core columns while cutting samples required by the identification of the polarizing sheets, preparing the core samples according to the specifications of the samples required by the full-rock analysis test, and placing the prepared samples in an X-ray diffractometer for the full-rock analysis test;
cutting a sample required by complete rock analysis and test, continuously cutting 10g-20g of a core sample from the residual core column, preparing the sample for testing the relative content of the clay mineral, preparing the core sample according to the sample specification required by testing the relative content of the clay mineral, and placing the prepared sample in an X-ray diffractometer for testing the relative content of the clay mineral;
continuously cutting the residual core column into block core samples with the specification of 10mm x 10mm while cutting samples required for testing the relative content of the clay minerals, preparing the core samples according to the specification of the samples required by the test of the scanning electron microscope, and placing the prepared samples in a scanning electron microscope for the test of the scanning electron microscope;
and finishing the joint test of the same oil and gas conventional reservoir sample.
The model of the core drilling machine is TZ-2A, and the core drilling machine is produced by petroleum scientific research instrument companies in Haian county, Nantong City; the model of the table type slicing machine is QP-100, and is produced by the commercial Ivoro instrument equipment manufacturing company; the helium porosimeter is of the type ULTRA PORE 200(TM), manufactured by core company, USA; the gas permeability instrument is KA-210, produced by core company in America; the model of the low-temperature nano-porosity analyzer is NMRC12-010V, NYMEI analytical instruments GmbH, Suzhou; the mercury intrusion instrument is of an Autopore9510 model, USA, Mike corporation; the laser particle size analyzer is produced by Mastersizer2000, Germany and Malvern; the model of the polarizing microscope is ZeissAxiosoppeAlpol, produced by Zeiss company in Germany; the X-ray diffractometer is produced by Bruker company in Germany with the model number D8; the model of the scanning electron microscope instrument is 5136LM, Germany, produced by Bruker company;
as described above, although the embodiments of the present invention have been described in detail, it will be apparent to those skilled in the art that many modifications are possible without substantially departing from the spirit and scope of the present invention. Therefore, such modifications are also all included in the scope of protection of the present invention.
Claims (2)
1. A joint test method for oil and gas conventional reservoir samples is characterized by comprising the following steps: the method comprises the following steps:
determining the position of a rock core sample to be tested, and acquiring a rock core column;
cutting the obtained core column to respectively obtain a first core body, a second core body, a third core body, a fourth core body, a fifth core body, a sixth core body and a seventh core body;
preparing a sample of the first core body, and placing the obtained sample in a helium porosity instrument and a gas permeability instrument for physical property test; after the physical property test is finished, preparing a sample of the first core body again, and placing the obtained sample in a low-temperature nano-porosity analyzer for nuclear magnetic resonance test; after the nuclear magnetic resonance test is finished, sample preparation is carried out on the first core body again, and the obtained sample is placed in a mercury intrusion instrument for conventional mercury intrusion test;
preparing a sample of the second rock core body, and placing the obtained sample in a laser particle size analyzer for particle size analysis and test;
preparing a sample of the third rock core body, and putting the obtained sample in a polarizing microscope for identifying a cast body slice;
preparing a sample of the fourth rock core body, and putting the obtained sample in a polarizing microscope for polarizing slice identification;
preparing a sample of the fifth rock core body, and placing the obtained sample in an X-ray diffractometer for carrying out a whole rock analysis test;
preparing a sample of the sixth rock core body, and placing the obtained sample in an X-ray diffractometer for testing the relative content of clay minerals;
and preparing a sample of the seventh core body, and placing the obtained sample in a scanning electron microscope instrument for scanning electron microscope testing.
2. The method for jointly testing the samples of the conventional oil and gas reservoirs according to claim 1, wherein the method comprises the following steps: the first core body is a cylinder with the diameter and the height of 25mm and 25mm respectively; the second rock core body is a block with the length, width and height of 3cm or a cylinder with the diameter of 2.5cm and the height of more than 2 cm; the third rock core body is a block with the length, width and height of 3cm or a cylinder with the diameter of 2.5cm and the height of more than 2 cm; the fourth core body is a block with the length, width and height of 3cm or a cylinder with the diameter of 2.5cm and the height of more than 2 cm; the fifth rock core body is 10g-20 g; the sixth core body is 10g-20 g; the seventh core body is a block body with the length, width and height of 10mm, 10mm and 10mm respectively.
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| CN202110320579.XA CN113125676A (en) | 2021-03-25 | 2021-03-25 | Oil and gas conventional reservoir sample joint test method |
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Application publication date: 20210716 |