CN109633778A - A kind of shale oil resource fast appraisement method - Google Patents

A kind of shale oil resource fast appraisement method Download PDF

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CN109633778A
CN109633778A CN201811513181.2A CN201811513181A CN109633778A CN 109633778 A CN109633778 A CN 109633778A CN 201811513181 A CN201811513181 A CN 201811513181A CN 109633778 A CN109633778 A CN 109633778A
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shale oil
shale
oil
hydrocarbon
kerogen
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CN109633778B (en
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蒲秀刚
姜文亚
王娜
肖敦清
孙超囡
韩文中
林常梅
代昆
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Petrochina Co Ltd
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Petrochina Dagang Oilfield Co
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    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
    • G01V9/005—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00 by thermal methods, e.g. after generation of heat by chemical reactions

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Abstract

The invention discloses a kind of shale oil resource fast appraisement methods, comprising the following steps: step A establishes primary rock producing hydrocarbon, row and remaining evolution plate by kerogen equilibrium swelling experiments analogy method, calculates be recessed total oil generating quantity, residual hydrocarbons amount and Hydrocarbon yield；Step B chooses mud shale area, effective thickness, density, pyrolysis S1The actual parameters such as lighter hydrocarbons recovery coefficient and shale oil adsorption coefficient calculate shale oil stock number using the method for quality oil content.It is an object of that present invention to provide the methods of a kind of pair of shale oil resource Fast Evaluation, suitable for shale oil Resources calculation, to determine the shale oil regularity of distribution, determine shale oil distribution, support is provided to promote exploration effect, for more objective, accurate evaluation shale oil resource, it is enriched with Favorable Areas especially for evaluation shale oil, the advantageous geological conditions of enrichment region is specified and practicable technical method is provided.

Description

A kind of shale oil resource fast appraisement method
Technical field
The present invention relates to a kind of shale oil evaluation method, specially a kind of shale oil resource fast appraisement method belongs to stone Exploration activity technical field.
Background technique
Shale oil is important unconventional petroleum resources of the preservation in mud shale, and continuous with energy demand is risen, And the rise of unconventional oil and gas in the world, domestic and foreign scholars constantly add the research of shale oil Resources Assessment Method By force.Cang Dong recess aperture leakage in goals research area is one of Bohai gulf basin shale oil major developmental area, and shale oil is different from conventional Oil gas, mainly in situ or by short distance migration and accumulation at hiding after hydrocarbon generation, distribution area is continuous, is developed by shale oil Feature and the factors such as heterogeneous influence, and traditional Resources Assessment Method cannot be completely adapted to unconventional petroleum resources.For Problem above, the present invention is directed to summarize a set of shale oil resource fast appraisement method.
Summary of the invention
The object of the invention is that providing a kind of shale oil resource fast appraisement method to solve the above-mentioned problems, it is Effective and reasonable shale oil resource assessment parameter is chosen, suitable evaluation method is established, is ground especially for shale oil forecast of distribution Study carefully, the realization of efficient increasing the storage target provides practicable technical system.
The present invention through the following technical solutions to achieve the above objectives: a kind of shale oil resource fast appraisement method, including Following steps:
Step A establishes primary rock producing hydrocarbon, row and remaining evolution plate by development kerogen thermal simulation and equilibrium swelling experiments, Calculate be recessed total oil generating quantity, residual hydrocarbons amount and Hydrocarbon yield；
Step B chooses mud shale area, effective thickness, density, pyrolysis S1 lighter hydrocarbons recovery coefficient and chloroform bitumen " A " and inhales The actual parameters such as attached coefficient calculate shale oil stock number using the method for quality oil content.
Preferably, in order to establish primary rock producing hydrocarbon, row and remaining evolution plate, in the step A, carry out kerogen hot-die Equilibrium swelling experiments are fitted, according to RO and hydrocarbon yield relationship, it is established that hydrocarbon yield template calculates formation pore heat-pressing simulation and is detained hydro carbons Be swollen with kerogen be detained hydrocarbon amount difference be shale oil maximum can the amount of adopting, foundation as shale oil resource assessment.
Preferably, shale oil stock number for ease of calculation in the step B, is calculated using the method for quality oil content Shale oil stock number: Q=S × h × ρ × K.
Wherein, Q is shale oil stock number；S is mud shale area；H is mud shale effective thickness；ρ is mud shale density；K For oil content.
Preferably, in order to establish suitable Resources Assessment Method, the acquiring method of the oil content: carry out Pyrolysis Experiment and survey S1 residual hydrocarbons amount is obtained, due to causing lighter hydrocarbons to lose during rock core standing, sample comminution etc., it is therefore desirable to which lighter hydrocarbons system is carried out to S1 Number correction, and because of the mainly free fraction of shale oil Resources calculation, therefore also need to carry out the correction of kerogen adsorption coefficient:
1. lighter hydrocarbons coefficient correction: being compared, asked using the sample under the conditions of liquid nitrogen frozen and the sample under room temperature Ks it is light=fresh food frozen S1/ routine S1；
2. kerogen adsorption coefficient corrects: from the point of view of simulated experiment, " A "/TOC becomes again before reaching hydrocarbon thresholding Slowly, it after reaching hydrocarbon thresholding, quicklys increase, " A "/TOC when the row's of being up to hydrocarbon thresholding is as shale oil maximum adsorption energy Power establishes " A "/TOC and depth relationship plate, acquires shale oil adsorption coefficient K absorption, can acquire shale oil maximum adsorption Amount.
Then K=S1×KsGently-TOC×KAbsorption
Q=S × h × ρ × K=S × h × ρ × (S1×KsGently-TOC×KAbsorption)
=S × h × ρ × (S1× fresh food frozen S1/ routine S1-TOC×KAbsorption)
Wherein, Q is shale oil stock number；S is mud shale area；H is mud shale effective thickness；ρ is mud shale density；K For oil content；S1For Pyrolysis Experiment residual hydrocarbons amount, KsGentlyFor lighter hydrocarbons correction coefficient, KAbsorptionFor kerogen adsorption coefficient.
The beneficial effects of the present invention are: shale oil resource fast appraisement method design is rationally, carry out kerogen thermal simulation And equilibrium swelling experiments, according to RO and hydrocarbon yield relationship, it is established that hydrocarbon yield template, calculate formation pore heat-pressing simulation be detained hydro carbons with Kerogen swelling be detained hydrocarbon amount difference be shale oil maximum can the amount of adopting as the foundation of shale oil resource assessment establish hydrocarbon source Rock is raw, row and remaining evolution plate, tentatively obtains shale oil maximum resource amount, for rational evaluation shale oil stock number provide according to According to using the method calculating shale oil stock number of quality oil content: Q=S × h × ρ × K, using the method meter of quality oil content Shale oil stock number is calculated, actual parameter is had chosen, establishes suitable Resources Assessment Method.
Detailed description of the invention
Fig. 1 is that kerogen of the present invention is detained oil gas, hydrocarbon source rock retained oil, total gas generating yield, total oil generating ratio and hydrocarbon yield relationship Schematic diagram；
Fig. 2 is A/TOC of the present invention and depth relationship schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Fig. 1~2 are please referred to, a kind of shale oil resource fast appraisement method includes the following steps
Step A establishes primary rock producing hydrocarbon, row and remaining evolution plate, calculates total oil generating quantity that is recessed, residual hydrocarbons amount and row's hydrocarbon Amount and distribution situation；
Step B seeks different key parameter values, calculates shale oil stock number: Q using the method for quality oil contentOil=S × h×ρ×k。
By comparison fresh food frozen sample and conventional sample, lighter hydrocarbons loss late average value is 0.5, by calculating fresh food frozen S1/ routine S1, acquiring research area Ks is gently 2 or so；According to A/TOC and depth relationship plate, value K is adsorbed as 0.25 or so.
In the step A, carry out kerogen thermal simulation and equilibrium swelling experiments, according to RO and hydrocarbon yield relationship, it is established that produce hydrocarbon Rate template, calculating formation pore heat-pressing simulation to be detained the difference that hydro carbons is swollen delay hydrocarbon amount with kerogen is that shale oil maximum can adopt Amount, as the foundation of shale oil resource assessment, establishes primary rock producing hydrocarbon, row and remaining evolution plate, tentatively obtains shale oil most Large resource amount provides foundation for rational evaluation shale oil stock number, in the step B, is calculated using the method for quality oil content Shale oil stock number: Q=S × h × ρ × K calculates shale oil stock number using the method for quality oil content, has chosen effective ginseng Number, establishes suitable Resources Assessment Method
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (4)

1. a kind of shale oil resource fast appraisement method, it is characterised in that: the following steps are included:
Step A establishes primary rock producing hydrocarbon, row and remaining evolution plate, calculates by carrying out kerogen thermal simulation and equilibrium swelling experiments Be recessed total oil generating quantity, residual hydrocarbons amount and Hydrocarbon yield；
Step B chooses mud shale area, effective thickness, density, pyrolysis S1Lighter hydrocarbons recovery coefficient and chloroform bitumen " A " adsorption coefficient Equal actual parameters calculate shale oil stock number using the method for quality oil content.
2. a kind of shale oil resource fast appraisement method according to claim 1, it is characterised in that: in the step A, open Kerogen thermal simulation and equilibrium swelling experiments are opened up, according to RO and hydrocarbon yield relationship, it is established that hydrocarbon yield template calculates formation pore heat-pressing Simulation be detained hydro carbons and kerogen swelling be detained hydrocarbon amount difference be shale oil maximum can the amount of adopting, as shale oil resource assessment Foundation.
3. a kind of shale oil resource fast appraisement method according to claim 1, it is characterised in that: in the step B, adopt Shale oil stock number: Q=S × h × ρ × K is calculated with the method for quality oil content.
Wherein, Q is shale oil stock number；S is mud shale area；H is mud shale effective thickness；ρ is mud shale density；K be containing Oil cut rate.
4. a kind of shale oil resource fast appraisement method according to claim 3, it is characterised in that: the oil content is asked It takes method: carrying out Pyrolysis Experiment and measure S1 residual hydrocarbons amount, due to causing lighter hydrocarbons to lose during rock core standing, sample comminution etc., Therefore need to carry out S1 lighter hydrocarbons coefficient correction, and because of the mainly free fraction of shale oil Resources calculation, therefore need to also be into The correction of row kerogen adsorption coefficient:
1. lighter hydrocarbons coefficient correction: being compared using the sample under the conditions of liquid nitrogen frozen and the sample under room temperature, acquire Ks Gently=fresh food frozen S1/ routine S1；
2. kerogen adsorption coefficient corrects: from the point of view of simulated experiment, " A "/TOC becomes again slowly before reaching hydrocarbon thresholding, It after reaching hydrocarbon thresholding, quicklys increase, " A "/TOC when the row's of being up to hydrocarbon thresholding is built as shale oil maximum adsorption ability Vertical " A "/TOC and depth relationship plate acquire shale oil adsorption coefficient K absorption, can acquire shale oil maximal absorptive capacity.
Then K=S1×KsGently-TOC×KAbsorption
Q=S × h × ρ × K=S × h × ρ × (S1 × KsGently-TOC×KAbsorption)
=S × h × ρ × (S1× fresh food frozen S1/ routine S1-TOC×KAbsorption)
Wherein, Q is shale oil stock number；S is mud shale area；H is mud shale effective thickness；ρ is mud shale density；K be containing Oil cut rate；S1 is Pyrolysis Experiment residual hydrocarbons amount, KsGentlyFor lighter hydrocarbons correction coefficient, KAbsorptionFor kerogen adsorption coefficient.
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CN110748334A (en) * 2019-09-04 2020-02-04 中国石油化工股份有限公司 Method for predicting favorable area of shale oil and continuous oil reservoir exploration
CN111638317A (en) * 2020-05-30 2020-09-08 中国石油天然气股份有限公司 Large-scale fresh water lake basin continental facies mud shale oil formation and evolution evaluation method
CN111912957A (en) * 2020-08-24 2020-11-10 东北石油大学 Shale oil quantity detection method and system based on occurrence state
CN111912961A (en) * 2020-08-24 2020-11-10 东北石油大学 Quantitative evaluation method and system for oil adsorbed by cheese roots in shale
CN111912959A (en) * 2020-08-24 2020-11-10 东北石油大学 Quantitative evaluation method and system for kerogen swelling oil in shale
CN112414890A (en) * 2020-10-27 2021-02-26 成都理工大学 Molecular simulation method for kerogen expansion behavior of shale oil reservoir
CN113720723A (en) * 2021-08-26 2021-11-30 中国科学院广州地球化学研究所 Swelling method for kerogen
CN113944459A (en) * 2020-07-15 2022-01-18 中国石油天然气股份有限公司 Method and device for predicting resource amount of shale in-situ conversion recoverable oil gas
CN114113536A (en) * 2020-08-26 2022-03-01 中国石油天然气股份有限公司 Method and device for predicting shale oil resource quantity

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Cited By (14)

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Publication number Priority date Publication date Assignee Title
CN110748334A (en) * 2019-09-04 2020-02-04 中国石油化工股份有限公司 Method for predicting favorable area of shale oil and continuous oil reservoir exploration
CN111638317A (en) * 2020-05-30 2020-09-08 中国石油天然气股份有限公司 Large-scale fresh water lake basin continental facies mud shale oil formation and evolution evaluation method
CN111638317B (en) * 2020-05-30 2022-06-03 中国石油天然气股份有限公司 Large-scale fresh water lake basin continental facies mud shale oil formation and evolution evaluation method
CN113944459A (en) * 2020-07-15 2022-01-18 中国石油天然气股份有限公司 Method and device for predicting resource amount of shale in-situ conversion recoverable oil gas
CN111912961A (en) * 2020-08-24 2020-11-10 东北石油大学 Quantitative evaluation method and system for oil adsorbed by cheese roots in shale
CN111912959B (en) * 2020-08-24 2021-05-11 东北石油大学 Quantitative evaluation method and system for kerogen swelling oil in shale
CN111912959A (en) * 2020-08-24 2020-11-10 东北石油大学 Quantitative evaluation method and system for kerogen swelling oil in shale
CN111912957A (en) * 2020-08-24 2020-11-10 东北石油大学 Shale oil quantity detection method and system based on occurrence state
CN111912961B (en) * 2020-08-24 2022-12-09 东北石油大学 Quantitative evaluation method and system for oil adsorption of dry casein roots in shale
CN114113536A (en) * 2020-08-26 2022-03-01 中国石油天然气股份有限公司 Method and device for predicting shale oil resource quantity
CN114113536B (en) * 2020-08-26 2023-12-22 中国石油天然气股份有限公司 Shale oil resource amount prediction method and device
CN112414890A (en) * 2020-10-27 2021-02-26 成都理工大学 Molecular simulation method for kerogen expansion behavior of shale oil reservoir
CN112414890B (en) * 2020-10-27 2021-07-27 成都理工大学 Molecular simulation method for kerogen expansion behavior of shale oil reservoir
CN113720723A (en) * 2021-08-26 2021-11-30 中国科学院广州地球化学研究所 Swelling method for kerogen

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