CN110991933A - Mountain shale gas resource evaluation method and system - Google Patents
Mountain shale gas resource evaluation method and system Download PDFInfo
- Publication number
- CN110991933A CN110991933A CN201911319860.0A CN201911319860A CN110991933A CN 110991933 A CN110991933 A CN 110991933A CN 201911319860 A CN201911319860 A CN 201911319860A CN 110991933 A CN110991933 A CN 110991933A
- Authority
- CN
- China
- Prior art keywords
- shale gas
- mountain
- resource
- evaluation
- gas resource
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011156 evaluation Methods 0.000 title claims abstract description 86
- 230000002349 favourable effect Effects 0.000 claims abstract description 60
- 238000009826 distribution Methods 0.000 claims abstract description 50
- 239000011435 rock Substances 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 37
- 238000010586 diagram Methods 0.000 claims description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 21
- 238000010276 construction Methods 0.000 claims description 16
- 238000009933 burial Methods 0.000 claims description 15
- 238000005516 engineering process Methods 0.000 claims description 6
- 239000005416 organic matter Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 215
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000004079 vitrinite Substances 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Forestry; Mining
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Human Resources & Organizations (AREA)
- Strategic Management (AREA)
- Economics (AREA)
- Theoretical Computer Science (AREA)
- General Business, Economics & Management (AREA)
- Entrepreneurship & Innovation (AREA)
- Educational Administration (AREA)
- Development Economics (AREA)
- General Physics & Mathematics (AREA)
- Marketing (AREA)
- Physics & Mathematics (AREA)
- Tourism & Hospitality (AREA)
- Agronomy & Crop Science (AREA)
- Primary Health Care (AREA)
- Mining & Mineral Resources (AREA)
- Animal Husbandry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Health & Medical Sciences (AREA)
- Game Theory and Decision Science (AREA)
- Operations Research (AREA)
- Quality & Reliability (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention relates to the technical field of oil and gas resource evaluation, and aims to provide a mountain shale gas resource evaluation method and system, wherein the method comprises the following steps of S1: establishing a mountain land shale gas evaluation standard, dividing the mountain land shale gas resource into a class I favorable area, a class II favorable area and a class III favorable area according to relevant parameters of the mountain land shale gas resource, and executing S2; s2: obtaining relevant parameters of the mountain shale gas resource to be evaluated to generate a plurality of parameter graphs, determining the evaluation area range according to the parameter graphs, and executing S3; s3: determining the number and types of favorable areas in the evaluation area range according to the mountain land shale gas evaluation standard of S1, and executing S4; s4: and calculating the rock gas resource amount in the favorable area, and finishing the evaluation of the mountain shale gas resource to be evaluated. The method comprehensively considers the basic geological characteristics, the geochemical characteristics, the reservoir characteristics and the resource distribution characteristics of the shale gas, evaluates the mountain shale gas resources, and has more comprehensive considered evaluation elements and stronger practicability.
Description
Technical Field
The invention relates to the technical field of oil and gas resource evaluation, in particular to a mountain shale gas resource evaluation method and system.
Background
Shale gas exploration differs from conventional natural gas exploration because shale gas formation and aggregation has many of its own characteristics, such as shale gas being self-generating, self-storing, and being a "continuum" gas; mainly using adsorption gas and free gas; no obvious trap limit, but certain preservation condition is still needed; the reservoir is compact, has extremely low porosity and permeability, and the reservoir space is mainly composed of nanometer pores and microcracks; is not controlled by the structure, and is generally distributed in basins or depressions, has wide distribution and large thickness and is rich in dark shale with organic matters; generally, no natural gas flow exists or the natural gas yield is low, economic exploitation can be carried out only by carrying out reservoir fracturing reformation, but the exploitation life and the production period are long.
The above unique characteristics of shale gas determine that when the shale gas is evaluated in a shale gas area, the shale gas needs to acquire resource enrichment conditions of shale rich in organic matters and develop and utilize conditions to evaluate the resources of the shale gas. When the existing evaluation method is used for evaluating shale gas, the similarity and the reservoir formation characteristics of the geological conditions of the domestic shale gas and the American shale gas are often over-emphasized, and the commonness of the shale gas and the conventional gas reservoir formation is neglected; and some methods only evaluate the quality of the shale gas, and some methods put the geological conditions affecting the shale gas at the head, so that the evaluation of the shale gas is not comprehensive enough.
Disclosure of Invention
The invention aims to provide a mountain land shale gas resource evaluation method and system, which comprehensively consider the basic geological characteristics, the geochemical characteristics, the reservoir characteristics and the resource distribution characteristics of shale gas to evaluate mountain land shale gas resources.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a mountain shale gas resource evaluation method comprises the following steps,
s1: establishing a mountain land shale gas evaluation standard, dividing the mountain land shale gas resource into a class I favorable area, a class II favorable area and a class III favorable area according to relevant parameters of the mountain land shale gas resource, and executing S2;
s2: obtaining relevant parameters of mountain shale gas resources to be evaluated to generate a plurality of parameter graphs, determining an evaluation area range according to the parameter graphs, and executing S3;
s3: determining the number and types of favorable zones in the evaluation zone range according to the mountain land shale gas evaluation standard of S1, and executing S4;
s4: and calculating the rock gas resource amount in the favorable area, and finishing the evaluation of the mountain shale gas resource to be evaluated.
Preferably, the relevant parameters in S1 include the residual organic carbon content of the mountain shale gas resource, the thermal evolution degree of organic matter, the burial depth, the effective thickness, the gas content and the pressure coefficient.
Preferably, the S2 specifically includes the following steps,
s21: acquiring a top surface construction diagram of the mountain shale gas resource to be evaluated;
s22: acquiring the residual organic carbon content data of the mountain shale gas resource to be evaluated, and drawing a residual organic carbon content distribution map of the mountain shale gas resource to be evaluated on the basis of the top surface construction map;
s23: acquiring burial depth data of the mountain shale gas resource to be evaluated, and drawing a burial depth distribution map of the mountain shale gas resource to be evaluated on the basis of the top surface structural map;
s24: obtaining effective thickness data of the mountain shale gas resource to be evaluated, and drawing an effective thickness distribution map of the mountain shale gas resource to be evaluated on the basis of a top surface structural diagram;
s25: acquiring gas content data of the mountain shale gas resource to be evaluated, and drawing a gas content distribution diagram of the mountain shale gas resource to be evaluated on the basis of the top surface construction diagram;
s26: acquiring pressure coefficient data of the mountain shale gas resource to be evaluated, and drawing a pressure distribution map of the mountain shale gas resource to be evaluated on the basis of a top surface construction map;
s27: and superposing the residual organic carbon content distribution diagram, the buried depth distribution diagram, the effective thickness distribution diagram, the gas content distribution diagram and the pressure distribution diagram to determine the range of the evaluation area.
Preferably, in S4, the rock gas resource quantity Q in the favorable area is calculated by using a volumetric methodg，
Qg＝0.01·A·H·ρ·G
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, rho is the shale rock density, and G is the gas bearing amount.
Preferably, in S4, the rock gas resource quantity Q in the favorable area is calculated by a similarity methodg，
Qg＝0.01·A·H·Fv·f
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, Fv is the recoverable resource abundance of the shale gas in unit volume, and f is the recoverable coefficient of the shale gas.
Preferably, in the step S4, the gas content method is used to calculate the rock gas resource quantity Q in the favorable areag，
Qg＝0.01·A·H·ρ·G·f
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, rho is the shale rock density, G is the gas bearing amount, and f is the shale gas recoverable coefficient.
Preferably, in S4, the amount Q of rock gas resources in the favorable area is calculated by the EUR methodg，
Qg＝N·EUR
Wherein N is the number of drilled wells, and EUR is the final recoverable reserve for a single well.
Preferably, theS4, calculating rock gas resource quantity Q in the favorable area by adopting an expert methodg，
Qg＝∑Gi·ai/∑ai
Wherein G isiAmount of recoverable resources for shale gas technology, aiFor expert weighting coefficients, ∑ ai＝1。
A mountain land shale gas resource evaluation system comprises,
the mountain land shale gas evaluation standard establishing unit is used for dividing the mountain land shale gas resource into a class I favorable area, a class II favorable area and a class III favorable area according to the residual organic carbon content, the organic matter thermal evolution degree, the burial depth, the effective thickness, the gas content and the pressure coefficient of the mountain land shale gas resource;
the parameter acquisition unit is used for acquiring relevant parameters of the mountain shale gas resource to be evaluated;
the data processing unit is used for generating a plurality of parameter graphs according to the relevant parameters of the mountain shale gas resource to be evaluated, which are acquired by the parameter acquisition unit, and determining the evaluation area range according to the parameter graphs;
and the evaluation unit is used for determining the number and the type of the favorable areas in the evaluation area range according to the mountain land shale gas evaluation standard established by the mountain land shale gas evaluation standard establishing unit, calculating the rock gas resource amount in the favorable areas and finishing the evaluation of the mountain land shale gas resource to be evaluated.
Preferably, the evaluation unit calculates the rock gas resource quantity Q in the favorable area by adopting a volume methodg，
Qg＝0.01·A·H·ρ·G
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, rho is the shale rock density, and G is the gas bearing amount.
Preferably, the evaluation unit calculates the rock gas resource quantity Q in the favorable area by adopting a similarity methodg，
Qg＝0.01·A·H·Fv·f
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, FvRecoverable for unit volume of shale gasAnd f is shale gas recoverable coefficient.
Preferably, the evaluation unit calculates the rock gas resource quantity Q in the favorable area by adopting a gas content methodg，
Qg＝0.01·A·H·ρ·G·f
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, rho is the shale rock density, G is the gas bearing amount, and f is the shale gas recoverable coefficient.
Preferably, the evaluation unit calculates the rock gas resource quantity Q in the favorable area by adopting an EUR methodg，
Qg＝N·EUR
Wherein N is the number of drilled wells, and EUR is the final recoverable reserve for a single well.
Preferably, the evaluation unit calculates the rock gas resource quantity Q in the favorable area by adopting an expert methodg，
Qg＝∑Gi·ai/∑ai
Wherein G isiAmount of recoverable resources for shale gas technology, aiFor expert weighting coefficients, ∑ ai＝1。
In conclusion, the beneficial effects of the invention are as follows:
1. the method comprehensively considers the basic geological characteristics, the geochemical characteristics, the reservoir characteristics and the resource distribution characteristics of the shale gas to evaluate the mountain land shale gas resources, and compared with the evaluation method in the prior art, the considered evaluation elements are more comprehensive, the method is more complete and the practicability is higher.
Drawings
FIG. 1 is a schematic diagram of the present invention for illustrating the determination of a region of interest based on a plurality of parameter maps;
FIG. 2 is a schematic diagram illustrating steps of a mountain shale gas resource evaluation method according to the present invention;
FIG. 3 is a schematic view of example 2 of the present invention showing the buried depth of the lower 3 storeys of the Longmaxi group in northern Yunnan Guizhou province;
FIG. 4 is a diagram showing the pressure coefficient of the lower 3 th floor of Longmaxi group in northern Yunnan Guizhou province in example 2 of the present invention;
FIG. 5 is a schematic view of example 2 of the present invention showing the effective thickness of the lower 3 storeys of the Longmaxi group in northern Yunnan Guizhou province;
FIG. 6 is a schematic diagram of example 2 of the present invention showing the TOC content of the lower 3 small layers of the Longmaxi group in northern Yunnan Guizhou province;
FIG. 7 is a diagram showing the vitrinite reflectance of the lower 3 th floor of Longmaxi group in northern Yunnan Guizhou province in example 2 of the present invention;
FIG. 8 is a schematic view of example 2 of the present invention showing the air content in the lower 3 stories of the Longmaxi group in northern Yunnan Guizhou province;
FIG. 9 is a schematic diagram of example 2 of the present invention for demonstrating the evaluation criteria of mountain shale gas;
FIG. 10 is a schematic view of example 2 of the present invention showing the advantageous zones of the lower 3 stories of the Longmaxi group of northern Yunnan Guizhou province;
fig. 11 is a schematic diagram for showing the resource amount of each favorable district of the lower 3 subordinates of the roman creek group in north exploration area of Yunnan Guizhou in example 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to fig. 1 to 11 of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A mountain land shale gas resource evaluation system comprises,
a mountain land shale gas evaluation standard establishing unit for establishing a TOC (total organic carbon) thermal evolution degree R according to the content of the residual organic carbon in the mountain land shale gas resourceoThe method comprises the following steps of dividing a mountain shale gas resource into a type I favorable area, a type II favorable area and a type III favorable area according to burial depth, effective thickness, gas content and pressure coefficient;
the parameter acquisition unit is used for acquiring relevant parameters of the mountain shale gas resource to be evaluated;
it is worth mentioning that, in this embodiment, the parameter obtaining unit obtains relevant parameters of the mountain shale gas resource to be evaluated, including but not limited to the remaining organic carbon content TOC and the organic matter thermal evolution degree R of the mountain shale gas resourceoThe method comprises the following steps of (1) burying depth, effective thickness, gas content, pressure coefficient, gas-containing area of shale gas, effective shale gas thickness, shale rock density, gas content, shale gas recoverable resource abundance per unit volume, shale gas recoverable coefficient, drilling number, final recoverable reserve of a single well, shale gas technology recoverable resource amount and expert weight coefficient;
the data processing unit is used for generating a plurality of parameter graphs according to the relevant parameters of the mountain shale gas resource to be evaluated, which are acquired by the parameter acquisition unit, and determining the evaluation area range according to the parameter graphs;
and the evaluation unit is used for determining the number and the type of the favorable areas in the evaluation area range according to the mountain land shale gas evaluation standard established by the mountain land shale gas evaluation standard establishing unit, calculating the rock gas resource amount in the favorable areas and finishing the evaluation of the mountain land shale gas resource to be evaluated.
Referring to fig. 1, specifically, the data processing unit generates a plurality of parameter maps according to the relevant parameters of the mountain shale gas resource to be evaluated, which are obtained in the following steps, determines the evaluation area range according to the plurality of parameter maps,
s21: acquiring a top surface construction diagram of the mountain shale gas resource to be evaluated;
s22: acquiring the residual organic carbon content data of the mountain shale gas resource to be evaluated, and drawing a residual organic carbon content distribution map of the mountain shale gas resource to be evaluated on the basis of the top surface construction map;
s23: acquiring burial depth data of the mountain shale gas resource to be evaluated, and drawing a burial depth distribution map of the mountain shale gas resource to be evaluated on the basis of the top surface structural map;
s24: obtaining effective thickness data of the mountain shale gas resource to be evaluated, and drawing an effective thickness distribution map of the mountain shale gas resource to be evaluated on the basis of a top surface structural diagram;
s25: acquiring gas content data of the mountain shale gas resource to be evaluated, and drawing a gas content distribution diagram of the mountain shale gas resource to be evaluated on the basis of the top surface construction diagram;
s26: acquiring pressure coefficient data of the mountain shale gas resource to be evaluated, and drawing a pressure distribution map of the mountain shale gas resource to be evaluated on the basis of a top surface construction map;
s27: and superposing the residual organic carbon content distribution diagram, the buried depth distribution diagram, the effective thickness distribution diagram, the gas content distribution diagram and the pressure distribution diagram to determine the range of the evaluation area.
Specifically, in this embodiment, the evaluation unit calculates the rock gas resource amount Q in the favorable area by using a volume methodg，
Qg＝0.01·A·H·ρ·G
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, rho is the shale rock density, and G is the gas bearing amount.
It is noted that in another embodiment, the evaluation unit calculates the quantity Q of rock gas resources in the vantage point by a similarity methodg，
Qg＝0.01·A·H·Fv·f
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, FvThe shale gas recoverable resource abundance is unit volume, and f is the shale gas recoverable coefficient.
It is noted that, in another embodiment, the evaluation unit calculates the quantity Q of the rock gas resources in the advantageous zone by using a gas content methodg，
Qg＝0.01·A·H·ρ·G·f
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, rho is the shale rock density, G is the gas bearing amount, and f is the shale gas recoverable coefficient.
It is noted that, in another embodiment, the evaluation unit calculates the rock gas resource quantity Q in the advantageous zone by the EUR methodg，
Qg＝N·EUR
Wherein N is the number of drilled wells, and EUR is the final recoverable reserve for a single well.
It is noted that, in another embodiment, the evaluation unit calculates the rock gas resource quantity Q in the favorable area by the expert methodg，
Qg＝∑Gi·ai/∑ai
Wherein G isiAmount of recoverable resources for shale gas technology, aiFor expert weighting coefficients, ∑ ai＝1
Example 2
Referring to fig. 2, the method for evaluating the mountain shale gas resource comprises the following steps,
s1: establishing a mountain land shale gas evaluation standard, dividing the mountain land shale gas resource into a class I favorable area, a class II favorable area and a class III favorable area according to relevant parameters of the mountain land shale gas resource, and executing S2;
s2: obtaining relevant parameters of the mountain shale gas resource to be evaluated to generate a plurality of parameter graphs, determining the evaluation area range according to the parameter graphs, and executing S3;
s3: determining the number and types of favorable areas in the evaluation area range according to the mountain land shale gas evaluation standard of S1, and executing S4;
s4: and calculating the rock gas resource amount in the favorable area, and finishing the evaluation of the mountain shale gas resource to be evaluated.
Specifically, the relevant parameters in S1 include the thermal evolution degree Ro of the remaining organic carbon content TOC mass of the mountain shale gas resource, the burial depth, the effective thickness, the gas content, and the pressure coefficient.
Referring to fig. 1, in particular, S2 specifically includes the following steps,
s21: acquiring a top surface construction diagram of the mountain shale gas resource to be evaluated;
s22: acquiring the residual organic carbon content data of the mountain shale gas resource to be evaluated, and drawing a residual organic carbon content distribution map of the mountain shale gas resource to be evaluated on the basis of the top surface construction map;
s23: acquiring burial depth data of the mountain shale gas resource to be evaluated, and drawing a burial depth distribution map of the mountain shale gas resource to be evaluated on the basis of the top surface structural map;
s24: obtaining effective thickness data of the mountain shale gas resource to be evaluated, and drawing an effective thickness distribution map of the mountain shale gas resource to be evaluated on the basis of a top surface structural diagram;
s25: acquiring gas content data of the mountain shale gas resource to be evaluated, and drawing a gas content distribution diagram of the mountain shale gas resource to be evaluated on the basis of the top surface construction diagram;
s26: acquiring pressure coefficient data of the mountain shale gas resource to be evaluated, and drawing a pressure distribution map of the mountain shale gas resource to be evaluated on the basis of a top surface construction map;
s27: and superposing the residual organic carbon content distribution diagram, the buried depth distribution diagram, the effective thickness distribution diagram, the gas content distribution diagram and the pressure distribution diagram to determine the range of the evaluation area.
It should be noted that in this embodiment, in S4, the rock gas resource quantity Q in the favorable area is calculated by using a volume methodg，
Qg＝0.01·A·H·ρ·G
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, rho is the shale rock density, and G is the gas bearing amount.
It is noted that, in another embodiment, the quantity Q of the rock gas resources in the favorable area is calculated by the similarity method in S4g，
Qg＝0.01·A·H·Fv·f
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, FvThe shale gas recoverable resource abundance is unit volume, and f is the shale gas recoverable coefficient.
It is noted that, in another embodiment, the gas content method is used to calculate the rock gas resource quantity Q in the advantageous zone in S4g，
Qg＝0.01·A·H·ρ·G·f
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, rho is the shale rock density, G is the gas bearing amount, and f is the shale gas recoverable coefficient.
It is noted that, in another embodiment, the EUR method is used in S4Calculating rock gas resource quantity Q in favorable areag，
Qg＝N·EUR
Wherein N is the number of drilled wells, and EUR is the final recoverable reserve for a single well.
It is noted that, in another embodiment, the rock gas resource quantity Q in the favorable area is calculated by the expert method in S4g，
Qg＝∑Gi·ai/∑ai
Wherein G isiAmount of recoverable resources for shale gas technology, aiFor expert weighting coefficients, ∑ ai＝1。
The method for evaluating the mountain shale gas resource proposed in this embodiment is described in detail below by taking the lower 3 th storey of the lom stream group in the north exploratory area of Yunnan black province as an example.
Referring to fig. 3, buried depth: the Longmaxi group in the north Yunnan black and north exploration area has a wide distribution range within the range of 500 m-4500 m, and is mainly distributed in the north part of a work area, wherein the area with the burial depth less than 500m is distributed only around the denudation area.
Referring to fig. 4, pressure coefficient: drawing a lower section pressure coefficient distribution graph of the Longmaxi group in the north exploration area of Yunnan Guizhou according to statistical data, and mainly presenting the following characteristics: the pressure coefficient of the work area is 1.0-1.4, and the maximum value of the No. 1 small layer at the bottom reaches 2.
Referring to fig. 5, effective thickness: the distribution characteristics of the thickness of the small layer of the lower section 3 of the Longmaxi group are as follows: gradually decreases from north to south, and a high value of 87.7m appears in a YS107 well; the thicknesses of the small layers of the exploration area 3 are all larger than 60 m.
Referring to fig. 6, organic carbon content TOC: the distribution characteristics of the lower section 3 small-layer TOC of Longmaxi group in the Yunnan Qianbei exploration area are as follows: TOC gradually decreases from north to south, and the TOC value is maximum near the YS109 well; however, the low values are found in the vicinity of the Yang 1 well, the YS107 well and the Sho 104 well.
Referring to fig. 7, vitrinite reflectance: lower segment R of Longmaxi group in Yunnan Qianbei exploration areaoThe contour distribution diagram mainly presents the following characteristics: from north to south RoGradually increased in the vicinity of the well R at Sho 104oThe maximum is 3.8%.
Referring to fig. 8, gas content: the distribution characteristics of the gas content of the lower section 2 of the Longmaxi group are as follows: the gas content is gradually reduced from north to south, and the high value of 2.5m appears in YS109 well3T; minimum 0.4m occurs at YS107 well3T, local high values occur near the Bao 1 well.
Referring to fig. 9, the established evaluation standard of the mountain shale gas divides the mountain shale gas resource into a class i favorable area, a class ii favorable area and a class iii favorable area according to the relevant parameters of the mountain shale gas resource.
Referring to fig. 10, beneficial zones of the lower 3 th subzone of the Longmaxi group of northern Yunnan Guizhou are determined according to the evaluation standard of shale gas in mountainous regions.
Referring to fig. 11, the resource amount of each favorable area of the lower segment 3 subzone of the roman creek group in the north probing area of Yunnan black and core is calculated, so that the resource abundance of each favorable area is obtained, and the evaluation is completed.
In the description of the present invention, it is to be understood that the terms "counterclockwise", "clockwise", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience of description only, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting.
Claims (10)
1. A mountain land shale gas resource evaluation method is characterized by comprising the following steps,
s1: establishing a mountain land shale gas evaluation standard, dividing the mountain land shale gas resource into a class I favorable area, a class II favorable area and a class III favorable area according to relevant parameters of the mountain land shale gas resource, and executing S2;
s2: obtaining relevant parameters of mountain shale gas resources to be evaluated to generate a plurality of parameter graphs, determining an evaluation area range according to the parameter graphs, and executing S3;
s3: determining the number and types of favorable zones in the evaluation zone range according to the mountain land shale gas evaluation standard of S1, and executing S4;
s4: and calculating the rock gas resource amount in the favorable area, and finishing the evaluation of the mountain shale gas resource to be evaluated.
2. The method of claim 1, wherein the relevant parameters in the step S1 include a residual organic carbon content, a thermal evolution degree of organic matter, a burial depth, an effective thickness, a gas content and a pressure coefficient of the mountain shale gas resource.
3. The mountain shale gas resource evaluation method of claim 2, wherein the S2 specifically comprises the following steps,
s21: acquiring a top surface construction diagram of the mountain shale gas resource to be evaluated;
s22: acquiring the residual organic carbon content data of the mountain shale gas resource to be evaluated, and drawing a residual organic carbon content distribution map of the mountain shale gas resource to be evaluated on the basis of the top surface construction map;
s23: acquiring burial depth data of the mountain shale gas resource to be evaluated, and drawing a burial depth distribution map of the mountain shale gas resource to be evaluated on the basis of the top surface structural map;
s24: obtaining effective thickness data of the mountain shale gas resource to be evaluated, and drawing an effective thickness distribution map of the mountain shale gas resource to be evaluated on the basis of a top surface structural diagram;
s25: acquiring gas content data of the mountain shale gas resource to be evaluated, and drawing a gas content distribution diagram of the mountain shale gas resource to be evaluated on the basis of the top surface construction diagram;
s26: acquiring pressure coefficient data of the mountain shale gas resource to be evaluated, and drawing a pressure distribution map of the mountain shale gas resource to be evaluated on the basis of a top surface construction map;
s27: and superposing the residual organic carbon content distribution diagram, the buried depth distribution diagram, the effective thickness distribution diagram, the gas content distribution diagram and the pressure distribution diagram to determine the range of the evaluation area.
4. The mountain land shale gas resource evaluation method of any one of claims 1 to 3, wherein the rock gas resource quantity Q in the favorable zone is calculated in S4 by using a volume methodg，
Qg＝0.01·A·H·ρ·G
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, rho is the shale rock density, and G is the gas bearing amount.
5. The mountain land shale gas resource evaluation method of any one of claims 1 to 3, wherein the quantity Q of rock gas resources in the profitable area is calculated by a similarity method in S4g，
Qg＝0.01·A·H·Fv·f
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, FvThe shale gas recoverable resource abundance is unit volume, and f is the shale gas recoverable coefficient.
6. The mountain land shale gas resource evaluation method according to any one of claims 1 to 3, wherein the amount Q of the rock gas resource in the favorable area is calculated by a gas content method in S4g，
Qg＝0.01·A·H·ρ·G·f
Wherein A is the gas bearing area of the shale gas, H is the effective shale gas thickness, rho is the shale rock density, G is the gas bearing amount, and f is the shale gas recoverable coefficient.
7. The mountain land shale gas resource evaluation method according to any one of claims 1 to 3, wherein the rock gas resource amount Q in the profitable area is calculated by an EUR method in S4g，
Qg＝N·EUR
Wherein N is the number of drilled wells, and EUR is the final recoverable reserve for a single well.
8. Mountain page according to any one of claims 1 to 3The rock gas resource evaluation method is characterized in that in the step S4, the rock gas resource quantity Q in the favorable area is calculated by adopting a special methodg，
Qg＝∑Gi·ai/∑ai
Wherein G isiAmount of recoverable resources for shale gas technology, aiFor expert weighting coefficients, ∑ ai＝1。
9. A mountain land shale gas resource evaluation system is characterized by comprising,
the mountain land shale gas evaluation standard establishing unit is used for dividing the mountain land shale gas resource into a class I favorable area, a class II favorable area and a class III favorable area according to the residual organic carbon content, the organic matter thermal evolution degree, the burial depth, the effective thickness, the gas content and the pressure coefficient of the mountain land shale gas resource;
the parameter acquisition unit is used for acquiring relevant parameters of the mountain shale gas resource to be evaluated;
the data processing unit is used for generating a plurality of parameter graphs according to the relevant parameters of the mountain shale gas resource to be evaluated, which are acquired by the parameter acquisition unit, and determining the evaluation area range according to the parameter graphs;
and the evaluation unit is used for determining the number and the type of the favorable areas in the evaluation area range according to the mountain land shale gas evaluation standard established by the mountain land shale gas evaluation standard establishing unit, calculating the rock gas resource amount in the favorable areas and finishing the evaluation of the mountain land shale gas resource to be evaluated.
10. The mountain shale gas resource evaluation system of claim 9, wherein the evaluation unit calculates the amount of rock gas resources in the vantage zone using the method of any of claims 4-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911319860.0A CN110991933A (en) | 2019-12-19 | 2019-12-19 | Mountain shale gas resource evaluation method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911319860.0A CN110991933A (en) | 2019-12-19 | 2019-12-19 | Mountain shale gas resource evaluation method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110991933A true CN110991933A (en) | 2020-04-10 |
Family
ID=70065702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911319860.0A Pending CN110991933A (en) | 2019-12-19 | 2019-12-19 | Mountain shale gas resource evaluation method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110991933A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764883A (en) * | 2020-06-05 | 2020-10-13 | 中国地质大学（武汉） | Shale gas favorable area evaluation method based on geological survey and remote sensing data |
| CN112529385A (en) * | 2020-12-04 | 2021-03-19 | 中国地质大学（北京） | Shale gas resource evaluation method and related device |
| CN117150207A (en) * | 2023-08-02 | 2023-12-01 | 中国地质大学（北京） | Method, equipment and storage medium for evaluating associated helium resource quantity |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199121A (en) * | 2014-08-15 | 2014-12-10 | 中国石油大学(北京) | Shale gas pool construction and production favorable area comprehensive determining method |
| CN104239703A (en) * | 2014-09-03 | 2014-12-24 | 中石化江汉石油工程有限公司测录井公司 | Quantitative analogical evaluation method for multiple parameters of shale gas reservoir |
| CN106168685A (en) * | 2015-09-08 | 2016-11-30 | 西南石油大学 | A kind of shale gas individual well geological syntheses evaluation methodology |
| CN110318744A (en) * | 2018-03-30 | 2019-10-11 | 中国石油化工股份有限公司 | A method of for predicting shale gas resource |
-
2019
- 2019-12-19 CN CN201911319860.0A patent/CN110991933A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199121A (en) * | 2014-08-15 | 2014-12-10 | 中国石油大学(北京) | Shale gas pool construction and production favorable area comprehensive determining method |
| CN104239703A (en) * | 2014-09-03 | 2014-12-24 | 中石化江汉石油工程有限公司测录井公司 | Quantitative analogical evaluation method for multiple parameters of shale gas reservoir |
| CN106168685A (en) * | 2015-09-08 | 2016-11-30 | 西南石油大学 | A kind of shale gas individual well geological syntheses evaluation methodology |
| CN110318744A (en) * | 2018-03-30 | 2019-10-11 | 中国石油化工股份有限公司 | A method of for predicting shale gas resource |
Non-Patent Citations (2)
| Title |
|---|
| 张金川等: "页岩气资源评价方法与技术:概率体积法", 《地学前缘》 * |
| 李玉喜等: "页岩气地质综合评价和目标优选", 《地学前缘》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764883A (en) * | 2020-06-05 | 2020-10-13 | 中国地质大学（武汉） | Shale gas favorable area evaluation method based on geological survey and remote sensing data |
| CN112529385A (en) * | 2020-12-04 | 2021-03-19 | 中国地质大学（北京） | Shale gas resource evaluation method and related device |
| CN112529385B (en) * | 2020-12-04 | 2023-05-16 | 中国地质大学（北京） | Shale gas resource evaluation method and related device |
| CN117150207A (en) * | 2023-08-02 | 2023-12-01 | 中国地质大学（北京） | Method, equipment and storage medium for evaluating associated helium resource quantity |
| CN117150207B (en) * | 2023-08-02 | 2024-01-26 | 中国地质大学（北京） | Method, equipment and storage medium for evaluating associated helium resource quantity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110991933A (en) | Mountain shale gas resource evaluation method and system | |
| Hearn et al. | Geological factors influencing reservoir performance of the Hartzog Draw Field, Wyoming | |
| CN107807407A (en) | A kind of petroleum zone efficiency evaluation method and apparatus | |
| CN103529475A (en) | Method for identifying and interpreting carbonate rock ancient karst reservoir layer three-dimensional structure | |
| CN110162922A (en) | A kind of integrated recognition method of water-drive pool dominant flowing path | |
| WO2019149146A1 (en) | Grading method of mines/mining areas for water-preserved mining | |
| CN112132454B (en) | Comprehensive evaluation method for water-rich property of water-bearing layer of roof or floor of coal seam | |
| CN103604916A (en) | Measurement method and system for gas containing range of continuous type tight sandstone gas reservoir | |
| CN1749780A (en) | Ternary classifying method for oil and gas reservoir | |
| CN111461386A (en) | Shale gas sweet spot prediction method based on BP neural network | |
| CN109138975A (en) | It is a kind of that new method that mutually seeping indicatrix is solved based on time shift log data | |
| Borash et al. | OPTIMIZATION OF TECHNOLOGICAL PARAMETERS OF AIRLIFT OPERATION WHEN DRILLING WATER WELLS. | |
| Phillips | Landform transitions in a fluviokarst landscape | |
| CN111749688B (en) | Method for predicting development position and direction of dominant seepage channel | |
| CN106285659B (en) | Hypotonic lithology heterogeneous gas reservoir development unit division method | |
| CN109424354B (en) | Method and system for calculating single-well control water-oil volume ratio of bottom water reservoir | |
| CN111460725A (en) | Shale gas sweet spot prediction based on multi-level fuzzy recognition | |
| CN109212625B (en) | Sandstone-type uranium ore ancient groundwater alternating strength quantitative calculation method | |
| CN111638550A (en) | Fracture-controlled-storage evaluation method | |
| CN114109374B (en) | Shale gas reservoir target window position determination method and device | |
| CN107091084A (en) | Set up the method that virtual data well extracts shale gas horizontal well reservoir physical parameter | |
| CN110244357A (en) | A kind of structure destruction type Foregone pool sentences knowledge method | |
| Eremin et al. | Project of the effective development of the oil field Prirazlomnoe in the conditions of moving ice of Arctic shelf | |
| CN109425904B (en) | Method for acquiring pore pressure of carbonate rock stratum | |
| CN111797539B (en) | Method for determining water filling coefficient of underground regulation and storage system burst zone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200410 |
|
| RJ01 | Rejection of invention patent application after publication |