CN105626062A - Method for analyzing sedimentary rock diagenetic stage through logging information - Google Patents
Method for analyzing sedimentary rock diagenetic stage through logging information Download PDFInfo
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- CN105626062A CN105626062A CN201610152170.0A CN201610152170A CN105626062A CN 105626062 A CN105626062 A CN 105626062A CN 201610152170 A CN201610152170 A CN 201610152170A CN 105626062 A CN105626062 A CN 105626062A
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- well
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- sedimentogeneous rock
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- 239000011435 rock Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000011148 porous material Substances 0.000 claims description 20
- 229910001919 chlorite Inorganic materials 0.000 claims description 8
- 229910052619 chlorite group Inorganic materials 0.000 claims description 8
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000002734 clay mineral Substances 0.000 claims description 7
- 238000011161 development Methods 0.000 claims description 7
- 206010002961 Aplasia Diseases 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims description 5
- 229910052900 illite Inorganic materials 0.000 claims description 5
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims description 5
- 238000011160 research Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000005251 gamma ray Effects 0.000 claims description 3
- 229910021647 smectite Inorganic materials 0.000 claims description 3
- 230000006870 function Effects 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 4
- 206010027336 Menstruation delayed Diseases 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052901 montmorillonite Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 206010052804 Drug tolerance Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000026781 habituation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a method for analyzing the sedimentary rock diagenetic stage through logging information.The aim of judging the diagenetic stage of sedimentary rock is achieved by analyzing the logging interpretation and through different ecologic features which a stratum at different diagenetic stages should have.The invention aims at providing the method for analyzing the sedimentary rock diagenetic stage through logging information so that the diagenetic stage of the stratum can be judged by rapidly using logging information.
Description
Technical field
The present invention relates to geological exploration and development field, relate in particular to a kind of method utilizing well-log information to analyze sedimentogeneous rock diagenetic stage.
Background technology
In exploitation of oil-gas field process, along with improving constantly of degree of prospecting, the research of sedimentogeneous rock is required also more and more higher by developer. Importance in reservoir evaluation, oil gas reservoir-forming study, rolling prospecting and later development scheme are arranged etc. of the further investigation of sedimentogeneous rock is highlighted day by day. But, mostly the existing further investigation in sedimentogeneous rock direction is to tend to for directions such as its diagenesis mode, diagenesis characteristics, and also stops, for the discussion of depositional phase residing for the sedimentogeneous rock in hydrocarbon-bearing pool trap, the stage do not paid attention to. The diagenetic stage habituation of sedimentogeneous rock is divided in early days, mid-term and late period three types. In fact, the rock mechanics characteristic of sedimentogeneous rock is not only directly related with its diagenesis mode, also with its residing for diagenetic stage have close relationship, for identical a set of hydrocarbon-bearing pool, the reservoir being in different diagenetic stage, the feature such as its sand body rock composition, hole size, type is different. Therefore judge to have equally important meaning in reservoir geology for what stratum carried out diagenetic stage.
Summary of the invention
It is an object of the invention to provide a kind of method utilizing well-log information to analyze sedimentogeneous rock diagenetic stage, with utilize fast well-log information judge diagenetic stage residing for survey stratum.
The present invention is achieved through the following technical solutions:
A kind of method utilizing well-log information to analyze sedimentogeneous rock diagenetic stage, this technology comprises following technological step: (a) is in a certain oil-gas exploration and development block, according to geologic condition and goal in research demand, choose the well with symbolical meanings, carry out acoustic travel time logging, self-potential logging, natural gamma ray log, neutron well logging, density logging, obtain the full well section logging trace of target well; B () utilizes well-log information to carry out formation porosity analysis, draw full well section " porosity depth curve ", it is determined that normal compaction is interval; Well-log information is utilized to determine clay mineral type and corresponding per-cent thereof; Utilize well-log information to carry out stratum secondary pores analysis, draw full well section " secondary pores depth curve "; (c) summary data data, choose that total porosity is big, compacting effort is normal, secondary pores aplasia, smectite content greatly, not interval containing chlorite be sedimentogeneous rock diagenesis commitment; Choose that total porosity is little but secondary pore growing, illite content big, chlorite content is big interval is sedimentogeneous rock diagenesis late stage; Remaining interval is defined as sedimentogeneous rock diagenesis mid-term stage simultaneously. A kind of method utilizing well-log information to analyze sedimentogeneous rock diagenetic stage of the present invention, utilizes logging evaluation result to analyze, to realize the object judging diagenetic stage residing for sedimentogeneous rock. The mechanism of the present invention is: be in the rock stratum that Diagn is early stage, and its major sedimentary mode is compacting effort, there will be no the geologic function modes such as explanation and recrystallization, and its compaction linearly strengthens in normal from shallow to deep. And for being in the stratum of diagenesis commitment, geology cementation is not also fully launched between hole is stitched, its inner charges majority is the montmorillonite of easy aquation dispersion, therefore the porosity analysis drawn according to well logging interpretation, its total hole all can be bigger, but the secondary pores that well logging interpretation analyzes can not grown or grow seldom, namely rock stratum matrix porosity is relatively big, secondary pores aplasia. For the rock stratum being in the Diagn later stage, it is impacted by various sedimentation mode all, wherein based on cementing, corrosion, explanation, recrystallization, fully filling and cementing in rock stratum hole now, total porosity is little, but of the remote past by geologic function due to it, under various external force effect, secondary pores is grown relatively, can find out significantly bigger than normal from " secondary pores depth curve " well logging interpretation; Further, being in the rock stratum in diagenesis late period, in its hole, the clay mineral of filling also should be illite, the chlorite of stable performance, therefore also can be verified accordingly from clay mineral analysis.
Further, the well logging project in described step (a) also comprises microlog. Microlog is the one in resistivity logging, and it can accurately be differentiated pervious course, divide thin layer, for determining that between the layer of different depositional phase, border has good auxiliary judgment effect.
Further, the well logging project in described step (a) also comprises array sonic log. Array sonic log can determine the stress trend on stratum and fracture development trend, and assisting user determines the fracture development base value of different layers position, it is to increase the precision of judgement.
The present invention compared with prior art, has following advantage and useful effect:
A kind of method utilizing well-log information to analyze sedimentogeneous rock diagenetic stage of the present invention, is analyzed by well logging interpretation evaluation, utilizes the stratum being in different diagenetic stage should have different geologic features, to realize the object judging diagenetic stage residing for sedimentogeneous rock.
Accompanying drawing explanation
Accompanying drawing described herein be used to provide to the embodiment of the present invention it is further understood that form the application a part, do not form the restriction to the embodiment of the present invention. In the accompanying drawings:
Fig. 1 is the schematic process flow diagram of the present invention's specific embodiment.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment 1:
A kind of method utilizing well-log information to analyze sedimentogeneous rock diagenetic stage as shown in Figure 1, this technology comprises following technological step: (a) is in a certain oil-gas exploration and development block, according to geologic condition and goal in research demand, choose the well with symbolical meanings, carry out acoustic travel time logging, self-potential logging, natural gamma ray log, neutron well logging, density logging, microlog, array sonic log, obtain the full well section logging trace of target well; B () utilizes well-log information to carry out formation porosity analysis, draw full well section " porosity depth curve ", it is determined that normal compaction is interval; Well-log information is utilized to determine clay mineral type and corresponding per-cent thereof; Utilize well-log information to carry out stratum secondary pores analysis, draw full well section " secondary pores depth curve "; (c) summary data data, choose that total porosity is big, compacting effort is normal, secondary pores aplasia, smectite content greatly, not interval containing chlorite be sedimentogeneous rock diagenesis commitment; Choose that total porosity is little but secondary pore growing, illite content big, chlorite content is big interval is sedimentogeneous rock diagenesis late stage; Remaining interval is defined as sedimentogeneous rock diagenesis mid-term stage simultaneously. The mechanism of the present invention is: be in the rock stratum that Diagn is early stage, and its major sedimentary mode is compacting effort, there will be no the geologic function modes such as explanation and recrystallization, and its compaction linearly strengthens in normal from shallow to deep. And for being in the stratum of diagenesis commitment, geology cementation is not also fully launched between hole is stitched, its inner charges majority is the montmorillonite of easy aquation dispersion, therefore the porosity analysis drawn according to well logging interpretation, its total hole all can be bigger, but the secondary pores that well logging interpretation analyzes can not grown or grow seldom, namely rock stratum matrix porosity is relatively big, secondary pores aplasia. For the rock stratum being in the Diagn later stage, it is impacted by various sedimentation mode all, wherein based on cementing, corrosion, explanation, recrystallization, fully filling and cementing in rock stratum hole now, total porosity is little, but of the remote past by geologic function due to it, under various external force effect, secondary pores is grown relatively, can find out significantly bigger than normal from " secondary pores depth curve " well logging interpretation; Further, being in the rock stratum in diagenesis late period, in its hole, the clay mineral of filling also should be illite, the chlorite of stable performance, therefore also can be verified accordingly from clay mineral analysis.
Upper described embodiment; the object of the present invention, technical scheme and useful effect have been further described; it is it should be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment of making, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. one kind utilizes the method for well-log information analysis sedimentogeneous rock diagenetic stage, it is characterised in that, this technology comprises following technological step:
A () is in a certain oil-gas exploration and development block, according to geologic condition and goal in research demand, choose the well with symbolical meanings, carry out acoustic travel time logging, self-potential logging, natural gamma ray log, neutron well logging, density logging, obtain the full well section logging trace of target well;
B () utilizes well-log information to carry out formation porosity analysis, draw full well section " porosity depth curve ", it is determined that normal compaction is interval; Well-log information is utilized to determine clay mineral type and corresponding per-cent thereof; Utilize well-log information to carry out stratum secondary pores analysis, draw full well section " secondary pores depth curve ";
(c) summary data data, choose that total porosity is big, compacting effort is normal, secondary pores aplasia, smectite content greatly, not interval containing chlorite be sedimentogeneous rock diagenesis commitment; Choose that total porosity is little but secondary pore growing, illite content big, chlorite content is big interval is sedimentogeneous rock diagenesis late stage; Remaining interval is defined as sedimentogeneous rock diagenesis mid-term stage simultaneously.
2. a kind of method utilizing well-log information to analyze sedimentogeneous rock diagenetic stage according to claim 1, it is characterised in that: the well logging project in described step (a) also comprises microlog.
3. a kind of method utilizing well-log information to analyze sedimentogeneous rock diagenetic stage according to claim 1 and 2, it is characterised in that: the well logging project in described step (a) also comprises array sonic log.
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| CN201610152170.0A CN105626062A (en) | 2016-03-17 | 2016-03-17 | Method for analyzing sedimentary rock diagenetic stage through logging information |
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| CN201610152170.0A CN105626062A (en) | 2016-03-17 | 2016-03-17 | Method for analyzing sedimentary rock diagenetic stage through logging information |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4524434A (en) * | 1979-05-21 | 1985-06-18 | Daniel Silverman | Method for determining the azimuth and length of a deep vertical fracture in the earth |
| CN102562048A (en) * | 2010-12-30 | 2012-07-11 | 长江大学 | Method for predicting low-porosity and low-permeability clasolite effective reservoir at high-diagenesis stage |
| CN104655540A (en) * | 2013-11-19 | 2015-05-27 | 中国石油大学(北京) | Method for determining ancient porosity of compact sandstone in pool-forming period |
| CN105178950A (en) * | 2015-07-16 | 2015-12-23 | 中国石油天然气股份有限公司 | Method for determining total organic carbon in fine-grained sedimentary rock |
| CN105334536A (en) * | 2015-12-01 | 2016-02-17 | 中国石油大学(华东) | Effectiveness evaluation method for compact sandstone reservoir map cracking system |
-
2016
- 2016-03-17 CN CN201610152170.0A patent/CN105626062A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4524434A (en) * | 1979-05-21 | 1985-06-18 | Daniel Silverman | Method for determining the azimuth and length of a deep vertical fracture in the earth |
| CN102562048A (en) * | 2010-12-30 | 2012-07-11 | 长江大学 | Method for predicting low-porosity and low-permeability clasolite effective reservoir at high-diagenesis stage |
| CN104655540A (en) * | 2013-11-19 | 2015-05-27 | 中国石油大学(北京) | Method for determining ancient porosity of compact sandstone in pool-forming period |
| CN105178950A (en) * | 2015-07-16 | 2015-12-23 | 中国石油天然气股份有限公司 | Method for determining total organic carbon in fine-grained sedimentary rock |
| CN105334536A (en) * | 2015-12-01 | 2016-02-17 | 中国石油大学(华东) | Effectiveness evaluation method for compact sandstone reservoir map cracking system |
Non-Patent Citations (1)
| Title |
|---|
| 张小莉 等: "利用测井资料分析成岩作用对储集层的影响", 《沉积学报》 * |
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Application publication date: 20160601 |