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Device and method for measuring grade of maturity of oil occurrence rock

A technology of maturity and oil-generating rocks, which is applied in the directions of measuring devices, phase influence characteristic measurement, and material analysis through optical means, and can solve problems such as complex methods and high costs

Inactive Publication Date: 2005-03-23
OCEAN UNIV OF CHINA
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Problems solved by technology

Other measurement methods include: physical-chemical method of kerogen, elemental composition of kerogen and infrared spectroscopy, chemical method of soluble organic matter, pyrolysis method, judging the maturity of organic matter by the composition of C2-C7 light hydrocarbons, and according to Characterization of C15+ hydrocarbons, maturity, etc., mainly due to high cost and complicated methods

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  • Device and method for measuring grade of maturity of oil occurrence rock
  • Device and method for measuring grade of maturity of oil occurrence rock
  • Device and method for measuring grade of maturity of oil occurrence rock

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[0014] As attached picture 1, figure 2 Shown, the present invention forms the optical system of strip beam by laser 1, is in the capillary 5 near focal plane and observation screen 6 and CCD camera 8 and the computer 10 that is connected with lead 9 and contains calculation program Composed, and the capillary 5 is placed horizontally, its axis is parallel to the axis of the cylindrical lens, and the optical system is kept coaxial with the laser beam.

[0015] The above-mentioned optical system for forming a strip beam is composed of a concave lens 2, a convex lens 3 and a cylindrical lens 4, and the front focus of the concave lens 2 and the convex lens 3 coincides, technically ensuring that the strip beam irradiates and covers the capillary. In order to reduce the size of the whole device, the convex lens 3 can be replaced by a plano-convex lens, which is next to the cylindrical lens, as shown in the figure.

[0016] Such as figure 2 , the focal length of the concave lens 2 ...

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Abstract

The invention is a device and method for measuring source rock maturity. It is made up of optical system forming stripe beam, capillary and observing screen behind it, CCD camera and computer, the capillary is placed horizontally, and its axis is parallel to the axis of the cylinder lens, and maintains the optical system and laser beam coaxial. The method uses parallel sample of source rock with known maturity, and uses CCD camera to record the interference stripe of source rock extract liquid, and differentiates the light and shade stripe and interference grades through image process, and uses the computer to program and forms a program, works out the reflection rate with Abelian reverse transition, creates a standard curve of source rock maturity and its extract liquid. To the source rock sample with unknown maturity, measures its reflection rate of its extract liquid, then it is compared with standard curve and acquires its maturity. The device is simple, the cost is low, and the precision is high.

Description

technical field [0001] A device and method for measuring the maturity of oil source rocks by means of light interference. Background technique [0002] In the field of petroleum exploration, source rock refers to the rock that can generate oil and natural gas. Different types of organic matter in source rocks have different properties, and source rocks containing different types of organic matter have different oil-generating potentials. The organic matter types of source rocks can be distinguished from the structure and composition of soluble organic matter (bitumen) and insoluble organic matter (kerogen). According to the thermal degradation mechanism of kerogen, oil and natural gas are produced when the organic matter reaches a certain evolution stage due to the action of temperature. The organic matter of source rocks with considerable quantity and good properties needs to be matured to form oil and natural gas. Both continental and marine strata can be divided into t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/01G01N21/45
Inventor 杨爱玲郑荣儿张京亮
Owner OCEAN UNIV OF CHINA
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