CN102681027A - Widespread complex lithologic oil and gas reservoir formation mode evaluation system and method - Google Patents
Widespread complex lithologic oil and gas reservoir formation mode evaluation system and method Download PDFInfo
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Abstract
The invention aims to provide a widespread complex lithologic oil and gas reservoir formation mode evaluation and research system and method. The specific complex lithologic oil and gas reservoir formation mode is analyzed, and the widespread complex lithologic oil and gas reservoir formation mode of near-source high-pressure hydrocarbon supplying, fault fissure dredging and lower gas and upper water reservoir forming is established, wherein the near-source high-pressure hydrocarbon supplying is the precondition of the formation and the existence of the oil and gas system of the lithologic oil and gas reservoir, the fault fissure dredging is the necessary impetus condition of the hydrocarbon transportation dredging and the formation of the lithologic oil and gas reservoir filling, and the lower gas and upper water reservoir forming is the typical characteristic of the formation of the widespread complex lithologic oil and gas reservoir. Under the background of continuous upwards-inclined reservoir, the bottom of the oil and gas reservoir is short of continuous flowing water because the reservoir is usually the oil and gas layer and the dry layer, the upwards-inclined reservoir can become into the normal oil and gas reservoir along the upwards-inclined direction of the structure, and an oil-gas-water coexistence belt is formed between the upwards-inclined reservoir and the normal oil and gas reservoir. Due to the widespread complex lithologic oil and gas reservoir forming mode evaluation and research system, the theoretical support is provided for the exploration of the lithologic oil and gas reservoir, and the wide exploration prospect of the lithologic oil and gas reservoir is showed.
Description
Technical field:
The present invention relates to a kind of oil gas and become to hide research method.
Background technology:
Tradition oil gas geological theory thinks that oil-gas accumulation becomes to hide to be distributed in the trap of structure high-order bit, basin more.The exploration practices of oil gas proves, the oil and gas reserves that is arranged in the structure high-order bit is very limited, and at quite a few trap oily not.The seventies in 20th century, a lot of basins, North America to tiltedly having found many super-huge natural gas pools with the position that has a down dip of structure.The exploration engineering of complex lithology hydrocarbon-bearing pool and method and conventional structural deposit have essential difference, and it distributes and present tectonic style does not have necessary relation, and conventional seismic data interpretation no longer is effective means with handling.To the characteristics of complex lithology hydrocarbon-bearing pool, to hope to propose to the prospecting model of dissimilar lithologic oil pools and supporting meticulous exploration engineering series thereof, utilization new technology, new method and the work thinking of constantly bringing forth new ideas are strengthened the research of exploration theory.
Summary of the invention:
The object of the invention just provides a kind ofly become to hide mode evaluation system and research method to blazoning the hydrocarbon-bearing pool of type complex lithology, and is applied in West Lake Depression and becomes to hide in the research.West Lake Depression Pinghu group sandstone is mainly low permeability reservoir; And Pinghu group high-quality source rocks in coal measures and fine and close low permeability reservoir are closely " multi-layer steamed bread " shape or " containing " formula contact relation; The anger that source rock is medium-term and long-term a large amount of, directly row gets in the low-permeability reservoirs for local water, and hydro carbons can not be grown the lateral migration of distance again by sand body simultaneously; The formation formula of gathering materials on the spot becomes the Tibetan pattern, for complex lithology hydrocarbon-bearing pool becomes to hide very advantageous conditions is provided.West Lake Depression Pinghu group arrives flower port group epimere for three or four sections, and " water becomes to hide on the therapeutic method to keep the adverse qi flowing downward " characteristic is obvious, and Pinghu group is mainly for three or four sections and is full of the band of gas, and group epimere large tracts of land is water layer (Fig. 1) to the flower port.Reservoir was oozed in high hole during flower port group was mainly; And be not uniform thickness alternating layers with hydrocarbon source rock more; This contact relation has caused the reservoir fully to contact with gas source rock; Can't form the dynamic air water balance of " air-pump type " air feed, can be lithologic deposit and provide high hole to ooze full water-bearing zone, play the effect of sealing hydrocarbon-bearing pool but be positioned at low permeability reservoir top." fault fissure is dredged " is that the necessary dynamic condition that lithologic deposit fills is dredged and formed in the hydro carbons migration; Under the continuous background of updip reservoir; The hydrocarbon-bearing pool bottom lacks continuously movable water (mostly reservoir is hydrocarbon zone and does layer); Become normal hydrocarbon-bearing pool along the structure updip direction, be oil gas water coexistence band (Fig. 2) between the two.
Description of drawings
Fig. 1. water-gas distribution and oil reservoir pattern
Fig. 2. blazon the hydrocarbon-bearing pool of type complex lithology and become to hide the mode evaluation system
Embodiment:
A kind of type complex lithology hydrocarbon-bearing pool one-tenth that blazons that the present invention relates to is hidden the mode evaluation system and method, is example with the West Lake Depression, comprises for five steps altogether:
Step 2, reservoir and living storage combinatory analysis; West Lake Depression Pinghu group sandstone is mainly low permeability reservoir; And Pinghu group high-quality source rocks in coal measures and fine and close low permeability reservoir are closely " multi-layer steamed bread " shape or " containing " formula contact relation; The anger that source rock is medium-term and long-term a large amount of, directly row gets in the low-permeability reservoirs for local water, and hydro carbons can not be grown the lateral migration of distance again by sand body simultaneously; The formation formula of gathering materials on the spot becomes the Tibetan pattern, for lithologic deposit is gathered into to hide very advantageous conditions is provided.Reservoir was oozed in high hole during flower port group was mainly; And be not uniform thickness alternating layers with hydrocarbon source rock more; This contact relation has caused the reservoir fully to contact with gas source rock; Can't form the dynamic air water balance of " air-pump type " air feed, can be lithologic deposit and provide high hole to ooze full water-bearing zone, play the effect of sealing oil gas but be positioned at low permeability reservoir top.
Step 3 blazons the hydrocarbon-bearing pool of type complex lithology and generates, migrates and the analysis of gathering-buried history; West Lake Depression Pinghu group hydrocarbon source rock generally gets in the latter stage Eocene era and gives birth to the hydrocarbon thresholding, reaches living hydrocarbon peak in the latter stage Oligocene epoch.At present the west slope zone hydrocarbon source rock still many places in the stage of ripeness; Flower port group hydrocarbon source rock major part begins to give birth to hydrocarbon in morning-middle Miocene Period, get into and give birth to the hydrocarbon peak period in Miocene Period latter stage-Pliocene epoch, and most of areas still mainly is in oil and moisture stages of ripeness of generation in a large number at present.Three phase of study area global existence hydrocarbon charge, the first phase infers to be latter stage-Miocene Period Oligocene epoch for the hydrocarbon charge time, and the hydrocarbon charge time second phase is Miocene Period in evening, and the hydrocarbon charge time third phase is the Pliocene epoch-Quaternary period; Traps such as disconnected nose, fault block and the stratigraphic unconformity of West Lake Depression sloped sides mainly receive the Oujiang River motion and Yuquan motion control; Central authorities' inversion structure band anticlinal trap is mainly formed with the Dragon Well tea motion control by the motion of flower port, trap form period how early in or consistent with the living hydrocarbon peak period of arranging of main hydrocarbon;
Step 4, the preservation of oil gas becomes to hide condition analysis; The West Lake Depression source rocks in coal measures has promptly begun to give birth to hydrocarbon in the low stage of ripeness, is main with anger, and oil generation is auxilliary.Pinghu group main hydrocarbon gets in the latter stage Eocene era and gives birth to the hydrocarbon thresholding, reaches the row of giving birth to hydrocarbon peak before Miocene Period; Flower port group hypomere hydrocarbon source rock begins to give birth to hydrocarbon in morning-middle Miocene Period, begin to get into the row of giving birth to hydrocarbon peak Miocene Period in evening.When the group hydrocarbon source rock got into the row of giving birth to hydrocarbon peak period in Pinghu, the stratum had reached 2500m on the group of Pinghu, and the intense mechanical compacting makes Pinghu group low permeability reservoir large tracts of land form.In the latter stage Miocene Period main hydrocarbon charge phase is later than the formation period of the fine and close low permeability reservoir of Pinghu group; Rock gas can only rely on driving pressure differential row's driven free pore water or weak irreducible water; And exist between the better rerum natura band of compact reservoir section and moisture saturated zone than the large interface resistance; Gas-water interface forms thus, causes the inverted Distribution Pattern of air water.Three or four sections of Pinghu groups and following complex formation lithologic deposit thereof are grown be full of the band of gas, one or two sections of Pinghu groups and spend port group hypomere is regional air water transitional zone, and flower port group epimere then is the full water-bearing zone of perviousness.
Step 5 in that West Lake Depression is given birth on the basis of storage lid research, is grown favourable district band to hydrocarbon-bearing pool and is predicted.
Claims (4)
1. the present invention relates to a kind of type complex lithology hydrocarbon-bearing pool one-tenth that blazons and hide the mode evaluation system and method; The peculiar pattern of Analysis of Complex lithologic reservoir forming, that sets up " nearly source high pressure supplies that hydrocarbon, fault fissure are dredged, water becomes to hide on the therapeutic method to keep the adverse qi flowing downward " a kind ofly blazons the hydrocarbon-bearing pool of type complex lithology and becomes the Tibetan pattern.It is the precondition that the lithologic deposit petroleum system forms and exists that nearly source high pressure supplies hydrocarbon, particularly forms the hydrocarbon-bearing pool of blazoning property, and nearly hydrocarbon source, source kitchen range is a prerequisite; It is that the moving condition of necessity that lithologic deposit fills is dredged and formed in the hydro carbons migration that fault fissure is dredged; Water one-tenth Tibetan is to blazon the hydrocarbon-bearing pool of type complex lithology to become to hide characteristic feature on the therapeutic method to keep the adverse qi flowing downward; Under the continuous background of updip reservoir; The hydrocarbon-bearing pool bottom lacks continuously movable water (mostly reservoir is hydrocarbon zone and does layer), becomes normal hydrocarbon-bearing pool along the structure updip direction, is oil gas water coexistence band between the two.
2. according to claim 1ly blazon the hydrocarbon-bearing pool of type complex lithology and become the Tibetan pattern; It is characterized in that described " nearly source high pressure supplies hydrocarbon " is the precondition that the lithologic deposit petroleum system forms and exists; Particularly form the hydrocarbon-bearing pool of blazoning property, nearly hydrocarbon source, source kitchen range is a prerequisite.
3. according to claim 1ly blazon the hydrocarbon-bearing pool of type complex lithology and become the Tibetan pattern, " fault fissure is dredged " is that the necessary dynamic condition that lithologic deposit fills is dredged and formed in the hydro carbons migration.
4. according to claim 1ly blazon the hydrocarbon-bearing pool of type complex lithology and become the Tibetan pattern, " water becomes to hide on the therapeutic method to keep the adverse qi flowing downward " blazons the hydrocarbon-bearing pool of type complex lithology to become to hide characteristic feature, and reflected the equilibrium process that lithologic deposit is preserved and transformed.
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| CN103487842A (en) * | 2013-09-26 | 2014-01-01 | 中国石油大学(北京) | Method and device for determining oil and gas accumulation period of complex superimposed basin |
| CN104915529A (en) * | 2014-03-10 | 2015-09-16 | 中国石油化工股份有限公司 | Uncertainty evaluation method based on self-confident degree conversion |
| CN104914481A (en) * | 2015-05-13 | 2015-09-16 | 中国石油大学(华东) | Volcanic zone fault sealing comprehensive evaluation method |
| CN104965979A (en) * | 2015-06-16 | 2015-10-07 | 中国石油化工股份有限公司 | Tight sandstone effective reservoir identifying method |
| CN105607144A (en) * | 2016-02-19 | 2016-05-25 | 中国石油集团川庆钻探工程有限公司 | Complex carbonate oil and gas reservoir accumulation mode evaluation method |
| CN106324701A (en) * | 2016-10-10 | 2017-01-11 | 中国海洋石油总公司 | Petroliferous basin analysis method based on fracture-uplift linkage |
| CN109188558A (en) * | 2018-09-29 | 2019-01-11 | 中国石油天然气股份有限公司 | A method of fine and close oil filling distance is calculated using hydrocarbon boost pressure model |
| CN110107287A (en) * | 2019-05-09 | 2019-08-09 | 西北大学 | The calculation method of tight gas reservoir filling power |
| CN112330109A (en) * | 2020-10-22 | 2021-02-05 | 中国石油大学(华东) | Quantitative characterization method, system and equipment for geological comprehensive evaluation of oil and gas exploration zone |
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| CN103487842A (en) * | 2013-09-26 | 2014-01-01 | 中国石油大学(北京) | Method and device for determining oil and gas accumulation period of complex superimposed basin |
| CN103487842B (en) * | 2013-09-26 | 2016-01-20 | 中国石油大学(北京) | A kind of defining method of Complicated superimposed basin pool forming period and device |
| CN104915529A (en) * | 2014-03-10 | 2015-09-16 | 中国石油化工股份有限公司 | Uncertainty evaluation method based on self-confident degree conversion |
| CN104914481B (en) * | 2015-05-13 | 2018-03-13 | 中国石油大学(华东) | A kind of integrated evaluating method of Volcanic Area fault sealing property |
| CN104914481A (en) * | 2015-05-13 | 2015-09-16 | 中国石油大学(华东) | Volcanic zone fault sealing comprehensive evaluation method |
| CN104965979B (en) * | 2015-06-16 | 2019-04-19 | 中国石油化工股份有限公司 | A kind of tight sand effective reservoir recognition methods |
| CN104965979A (en) * | 2015-06-16 | 2015-10-07 | 中国石油化工股份有限公司 | Tight sandstone effective reservoir identifying method |
| CN105607144A (en) * | 2016-02-19 | 2016-05-25 | 中国石油集团川庆钻探工程有限公司 | Complex carbonate oil and gas reservoir accumulation mode evaluation method |
| CN106324701A (en) * | 2016-10-10 | 2017-01-11 | 中国海洋石油总公司 | Petroliferous basin analysis method based on fracture-uplift linkage |
| CN109188558A (en) * | 2018-09-29 | 2019-01-11 | 中国石油天然气股份有限公司 | A method of fine and close oil filling distance is calculated using hydrocarbon boost pressure model |
| CN109188558B (en) * | 2018-09-29 | 2020-08-11 | 中国石油天然气股份有限公司 | Method for calculating compact oil filling distance by using hydrocarbon generation pressurization model |
| CN110107287A (en) * | 2019-05-09 | 2019-08-09 | 西北大学 | The calculation method of tight gas reservoir filling power |
| CN112330109A (en) * | 2020-10-22 | 2021-02-05 | 中国石油大学(华东) | Quantitative characterization method, system and equipment for geological comprehensive evaluation of oil and gas exploration zone |
| CN113049467A (en) * | 2021-03-12 | 2021-06-29 | 东北石油大学 | Device and method for simulating unconformity convergence ridge reservoir control mechanism |
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Application publication date: 20120919 |