Sea area natural gas hydrate occurrence state discrimination method and system
A technology of occurrence state and discrimination method, which is applied in the field of discrimination method and system of natural gas hydrate occurrence state in sea areas, can solve the problems of lack of reliable methods and little research on the discrimination of hydrate occurrence state, so as to improve accuracy Effect
Pending Publication Date: 2020-12-25
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF0 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although scholars have provided methods for establishing petrophysical models for different microscopic occurrence modes, there is little research on the identification of hydrate occurrence states, and there is still a lack of reliable methods.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0030] The principle and spirit of the present invention will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present invention, rather than to limit the scope of the present invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0031] Those skilled in the art know that the embodiments of the present invention can be implemented as a system, device, device, method or computer program product. Therefore, the present disclosure may be embodied in the form of complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.
[0032] According to an embodiment of the present invention, a system and a system for iden...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a sea area natural gas hydrate occurrence state discrimination method and system. The method comprises the following steps: obtaining the porosity and hydrate saturation in a well according to logging information; establishing a rock physical model; obtaining a first discrimination parameter and a second discrimination parameter of the hydrate occurrence type under the condition of given porosity according to the constructed rock physical model, wherein the first discrimination parameter is related to transverse wave velocity logging data; judging whether the logging information contains transverse wave velocity logging data or not, selecting the first discrimination parameter if the logging information contains the transverse wave velocity logging data, selecting asecond discrimination parameter, rendezvous hydrate saturation and the selected discrimination parameter if the logging information does not contain the transverse wave velocity logging data, obtaining a cross plot, and carrying out variable disturbance error calculation; and obtaining the distribution of the selected discrimination parameters and the hydrate saturation in the cross plot accordingto the measured data and disturbance errors in the logging data, and qualitatively discriminating the occurrence state of the hydrate.
Description
technical field [0001] The invention relates to the technical field of natural gas hydrate identification, in particular to a method and system for identifying the occurrence state of natural gas hydrate in sea areas. Background technique [0002] As an important alternative energy source for fossil fuels, natural gas hydrate has great exploration potential and broad development prospects. Due to different depositional environments, hydrates will occur in different forms underground, and the occurrence state can reflect the formation conditions of hydrates, which has guiding significance for the research on the properties of hydrate-bearing strata and the geological model of accumulation. Hydrate drilling in different areas shows that there are great differences in the occurrence states of hydrates, and can cause significant changes in the elastic response of hydrate formations. Accurate identification of hydrate occurrence types is the basis for petrophysical modeling of ga...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G16C20/30G06F30/20
CPCG16C20/30G06F30/20Y02A90/30
Inventor 刘迪陈海峰崔京彬李磊黄娜陈萍
Owner BC P INC CHINA NAT PETROLEUM CORP