CN107558992A - A kind of shale gas Horizontal Well Targets window system of selection - Google Patents
A kind of shale gas Horizontal Well Targets window system of selection Download PDFInfo
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- CN107558992A CN107558992A CN201711010247.1A CN201711010247A CN107558992A CN 107558992 A CN107558992 A CN 107558992A CN 201711010247 A CN201711010247 A CN 201711010247A CN 107558992 A CN107558992 A CN 107558992A
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Abstract
The present invention relates to oil and gas exploration and development field, and in particular to marine facies shale gas Horizontal Well Targets window system of selection.Shale gas Horizontal Well Targets window optimization technique method proposed by the present invention, divided in high-quality shale section Fine Layers（I~III peaks）On the basis of, by reservoir static parameter fine evaluation, Engineering Rock Mechanics experiment and calculate, with reference to having bored shale gas horizontal well oil/gas show situation, and pressure break horizontal well production logging interpretation achievement, a kind of ready-made shale gas Horizontal Well Targets window position method for optimizing, with more objective and accurate assessment, some block horizontal well reasonably walks position, improves well yield to greatest extent.
Description
Technical field
The present invention relates to oil and gas exploration and development field, and in particular to marine facies shale gas Horizontal Well Targets window selecting party
Method.
Background technology
Nearly ten years, Chinese shale gas exploitation uses for reference north America region shale gas development Experience from early learning, to gradual knot
Chinese shale gas area geology, engineering specific condition are closed, has gradually formed a set of road for development for adapting to Chinese shale gas characteristic, first
A collection of shale gas pilot development zone is established in areas such as Fuling reef dam, Weiyuan-Changning afterwards, has overfulfiled " 12 at present
The ambitious goal for the side's natural gas of production 6,500,000,000 that five " development plans are formulated.Currently, Shale Gas Accumulation geological theory, shale gas choosing
The basic geology fields such as area's evaluation, shale reservoir overall merit, shale gas preservation condition research achieve plentiful and substantial research into
Fruit, it is important to instructing shale gas exploration and development to serve.In recent years, have benefited from shale gas horizontal well drilling and be segmented more
The progress and extensive use of the extensive hydraulic fracturing technology of cluster, shale gas well yield surge tens of thousands of to tens to ten from thousands of sides
Incomparably, prelude has been pulled open in the extensive exploration and development of Marine Sedimentary Rock in South China shale gas.
It is well known that the Upper Yangtze Region Lower Paleozoic strata Ordovician system-five peaks of Silurian-Longma small stream group shale thickness is big,
Widely distributed, the interval of wherein shale quality relative good is distributed in five peaks-Longma small stream group bottom, thickness in 30-50m,
And each block shale gas horizontal well in current river south is walked position and is concentrated mainly in the range of five peaks-Longma small stream group bottom 7-13m
The high-quality shale section of black in, the vertical skew of horizontal well path target window area requirement horizontal segment is not more than 2m.But current sinopec
Burnt masonry dam, petrochina Weiyuan-Changning, and the block shale gas Horizontal Well Targets window position selection differences such as sinopec Weiyuan, Yongchuan
It is larger：Petrochina Weiyuan-Changning is Horizontal Well Targets window, sinopec Yongchuan block with Longma using Longma small stream III GRs peak
Small stream group I GRs peak be Horizontal Well Targets window, sinopec Weiyuan block with Longma small stream group No. II, No. II-III and No. III from
Right gamma peak is Horizontal Well Targets window, it can be seen that the selection scheme of target window is various, it is difficult to uniformly form a kind of scheme, even
One block also has a variety of target windows to select, cause be difficult the objective evaluation single well productivity under same dimensional constraints it is controlled because
Element.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of prior art, there is provided a kind of more objective and accurate
Assess some block horizontal well and reasonably walk position, it is purpose shale gas Horizontal Well Targets window to improve well yield to greatest extent
Preferable technical method.
In order to realize foregoing invention purpose, the invention provides following technical scheme：
A kind of shale gas Horizontal Well Targets window system of selection, comprises the following steps：
（1）According to different shape feature lamina developmental state, the description of millimeter rank is carried out to target shale core lamina and is divided into
Multiple lamina groups；Notable difference be present in terms of lamina spacing, lamina assemble pattern and hydrodynamic condition between lamina group, enter
And influence lamina group reservoir characteristic.
（2）To step（1）In lamina group carry out shale geologic parameter well log interpretation, with reference to rock mechanics fragility calculate tie
Fruit and crustal stress Distribution value statistical analysis, evaluate each lamina group shale quality；And then establish substratum reservoir evaluation standard, this step
Key is to match lamina group feature with well log interpretation achievement, preferably a set of under the background of overall lamina group fine evaluation
The reservoir elaborate division scheme that can effectively identify and laterally promote under yardstick of logging well；
（3）With step（2）In based on lamina group shale quality, using log measurement standard, carry out rock-electric relation
Analysis, divided to laterally connecting well reservoir；
（4）The drilling well that track is relative complex, vertical misalignment is larger is walked using horizontal well, carries out production logging, measures each pressure break
Section gas-producing profile, calculates contribution rate of the different fracturing sections to individual well total output, specifies the fracturing section reservoir of the high contribution rate of gas yield
Every geologic feature, so that it is determined that high yield is enriched with Reservoir Section；
（5）Utilize step（1）-（4）As a result, Horizontal Well Targets window optimal location is determined.
Further, step（1）In, see that the size of spacing is different with the content of the melanocratic mineral of composition lamina according to lamina
Morphological feature lamina situation, optimum shale section is divided into multiple lamina groups.
Further, step（1）In, lamina group is carried out using well logging detail stratigraphic division, rock core fine description and rock-electric relation
Division.
Further, step（4）In：Based on the dynamic monitoring means of pressure break horizontal well fracturing effect, obtain production gas/liquid and cut open
Face, analyze contribution of the different target window position horizontal segments to single well productivity.
Further, step（5）In, 4%, air content is more than with TOC and is more than 6%, fragility more than 4m3/t, porosity and is higher than
60% and crustal stress coefficient of variation be less than 0.1 on the basis of determine Horizontal Well Targets window optimal location.
Compared with prior art, beneficial effects of the present invention：A kind of shale gas Horizontal Well Targets window proposed by the present invention is preferred
Technical method, divided in high-quality shale section Fine Layers（I~III peaks）On the basis of, finely commented by reservoir static parameter
Valency, Engineering Rock Mechanics experiment and calculate, with reference to having bored shale gas horizontal well oil/gas show situation, and the production of pressure break horizontal well
Well log interpretation achievement, ready-made a kind of shale gas Horizontal Well Targets window position method for optimizing, with some area of more objective and accurate assessment
Block horizontal well reasonably walks position, improves well yield to greatest extent.
Brief description of the drawings：
Fig. 1 is basic step schematic diagram of the present invention；
Fig. 2 is that optimum shale section substratum finely divides design sketch in the embodiment of the present invention；
Fig. 3 is certain shale gas drilling well target window position preferred exemplary figure of-Chuan Nan of the embodiment of the present invention；
Fig. 4 is certain shale gas horizontal well gas-producing profile design sketch of-Chuan Nan of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.But this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, all to belong to the present invention based on the technology that present invention is realized
Scope.
Embodiment 1：As shown in figure 1, a kind of shale gas Horizontal Well Targets window system of selection that the present embodiment provides, including it is as follows
Step：
S100：According to different shape feature lamina developmental state, the size of spacing and the dark-coloured ore deposit of composition lamina are seen according to lamina
The content different shape feature lamina situation of thing, target shale core lamina is subjected to the description of millimeter rank and is divided into multiple laminas
Group；Notable difference between lamina group in terms of lamina spacing, lamina assemble pattern and hydrodynamic condition be present, and then influence line
Layer group reservoir characteristic；Specifically, in this step, lamina is carried out using well logging detail stratigraphic division, rock core fine description and rock-electric relation
Group division.
S200：Shale geologic parameter well log interpretation is carried out to the lamina group in step S100（Relevant parameter be mainly TOC,
Air content, porosity, fragility etc.）, with reference to rock mechanics fragility result of calculation and crustal stress Distribution value statistical analysis, evaluate each line
Layer group shale quality；And then establish substratum reservoir evaluation standard, this step key be by lamina group feature and well log interpretation into
Fruit matches, and under the background of overall lamina group fine evaluation, preferably one is enclosed under well logging yardstick and can effectively identify and laterally promote
Reservoir elaborate division scheme；
S300：Based in step S200 lamina group shale quality, using log measurement standard, carry out rock-electricity and close
System's analysis, is divided to laterally connecting well reservoir.
S400：The drilling well that track is relative complex, vertical misalignment is larger is walked using horizontal well, carries out production logging, is based on
The dynamic monitoring means of pressure break horizontal well fracturing effect, production gas/liquid section is obtained, calculates different fracturing sections to individual well total output
Contribution rate, measure each fracturing section gas-producing profile and analyze contribution of the different target window position horizontal segments to single well productivity；Specify gas
The fracturing section reservoir items geologic feature of the high contribution rate of yield, so that it is determined that high yield is enriched with Reservoir Section.
S500：Using step S200-S400 result, 4%, air content is more than with TOC and is more than more than 4m3/t, porosity
6%th, fragility is higher than 60% and crustal stress coefficient of variation is less than on the basis of 0.1, determines Horizontal Well Targets window optimal location.It is it is determined that horizontal
Well target window optimal location.
Fig. 2 gives the scheme of the optimum black shale Fine Layers division in Longma small stream group bottom, it can be seen that
Evaluation individual well shale gas reservoir has three major types curve, is Logging Curves, reservoir parameter curve respectively, and element well logging is bent
Line.Wherein, Logging Curves can reach the other detail stratigraphic division degree of Centimeter Level, pass through the GR and resistance more sensitive to lithology
Rate curve, longitudinal direction is upper can to mark off 26 substratums of logging well.Reservoir parameter curve is based on well log interpretation, and longitudinal upper curve change becomes
Gesture is similar to log, but is limited to the number of experimental data point, and its change frequency is second to log, but can still separate
22 substratums；Besides element Logging curve, because its sampled point is more sparse, therefore the change frequency of curve values is lower, indulges
19 substratums are divided upwards.Finally, by the across comparison of three class curves, there is the position of parameter significant change with every class curve
Put unified layering boundary, i.e., it is former per the division substratum boundary line appropriate amount of fine-tuning of class curve.It is upper excellent that the invention can finely distinguish longitudinal direction
The nuance of matter shale reservoir feature, geologic basis is provided for preferred target window position.
Fig. 3 gives southern Sichuan shale gas well and judged by multi-parameter comprehensive, and its middle conductor A is represented away from top surface
24.5m, away from bottom plate 6.5m, a1 is target spot, corresponding to lead a vertical depth 3716m；It specify that in the high gamma section the 2nd in Longma small stream group bottom
To having high air content, high TOC, high porosity, high brittle mineral content between the 3rd peak point, low clay content, oil gas shows
Show active, be " geology+engineering " double sweet tea layers, this section of parameters are optimal on longitudinal direction, preferably the result of Horizontal Well Targets window position.
Fig. 4 Chuan Nan shale gas horizontal well gas-producing profile design sketch, it is after completion pressure break, passes through production logging dynamic
Contribution of the different target window position fracturing sections to single well productivity is illustrated, block diagram dark color represents gas production, and white represents production
Water, pressure break hop count have 12 sections altogether, and the optimal target window position of the corresponding aforementioned levels well of substratum 5 is met wherein boring, from the point of view of fracturing effect,
Its gas yield highest, individual well total output is contributed maximum.Therefore, geology and the optimal target window section of engineering evaluation can clearly be found out
Gas production highest.
Claims (5)
1. a kind of shale gas Horizontal Well Targets window system of selection, it is characterised in that comprise the following steps：
（1）Millimeter rank description is carried out to target shale core lamina, is divided into multiple lamina groups；
（2）To step（1）In lamina group carry out shale geologic parameter well log interpretation, with reference to rock mechanics fragility result of calculation and
Crustal stress Distribution value statistical analysis, evaluate each lamina group shale quality；
（3）With step（2）In based on lamina group shale quality, using log measurement standard, carry out rock-electric relation
Analysis, divided to laterally connecting well reservoir；
（4）Carry out production logging, measure each fracturing section gas-producing profile, calculate contribution rate of the different fracturing sections to individual well total output,
The fracturing section reservoir items geologic feature of the high contribution rate of gas yield is specified, so that it is determined that high yield is enriched with Reservoir Section；
（5）Utilize step（1）-（4）As a result, Horizontal Well Targets window optimal location is determined.
2. according to the method for claim 1, it is characterised in that step（1）In, the size and composition of spacing are seen according to lamina
The content different shape feature lamina situation of the melanocratic mineral of lamina, multiple lamina groups are divided into by optimum shale section.
3. according to the method for claim 1, it is characterised in that step（1）In, it is fine using well logging detail stratigraphic division, rock core
Description and rock-electric relation carry out lamina group division.
4. according to the method for claim 1, it is characterised in that step（4）In：It is dynamic based on pressure break horizontal well fracturing effect
State monitoring means, production gas/liquid section is obtained, analyzes contribution of the different target window position horizontal segments to single well productivity.
5. according to the method for claim 1, it is characterised in that step（5）In, 4%, air content is more than with TOC and is more than 4m3/
T, porosity be more than 6%, fragility higher than 60% and crustal stress coefficient of variation be less than 0.1 on the basis of determine Horizontal Well Targets window optimal position
Put.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295882A (en) * | 2019-06-24 | 2019-10-01 | 中国石油化工股份有限公司 | Basin edge complicated structure band normal pressure shale gas horizontal well integrated design method |
| CN111335866A (en) * | 2020-02-26 | 2020-06-26 | 中国石油天然气股份有限公司 | Tight sandstone gas reservoir low-quality reservoir horizontal well optimization method |
| CN111379552A (en) * | 2020-03-04 | 2020-07-07 | 中国石油化工股份有限公司 | Sea-phase shale gas horizontal well target window selection method based on high-frequency sequence stratigraphy |
| CN112989257A (en) * | 2020-12-11 | 2021-06-18 | 中国石油天然气股份有限公司 | Method for measuring gas production rate of marine phase shale oil and gas reservoir |
| CN114109374A (en) * | 2020-08-31 | 2022-03-01 | 中国石油天然气股份有限公司 | Method and device for determining position of target window of shale gas reservoir |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201490A (en) * | 2014-06-05 | 2015-12-30 | 中国石油化工股份有限公司 | Method for analyzing rock facies of shale bed section |
| EP3018287A1 (en) * | 2014-11-07 | 2016-05-11 | Geoservices Equipements SAS | Method and system for monitoring stability of a wellbore |
| CN105651966A (en) * | 2016-01-18 | 2016-06-08 | 山东科技大学 | Shale oil and gas high-quality reservoir stratum evaluation method and parameter determination method |
| CN105869060A (en) * | 2016-04-06 | 2016-08-17 | 山东省煤田地质规划勘察研究院 | Fine-grained rock micro microgroove layer classification method |
| CN106032751A (en) * | 2015-03-10 | 2016-10-19 | 中国石油化工股份有限公司 | A well path petrological facies calibration method |
| FR3040509A1 (en) * | 2015-08-31 | 2017-03-03 | Halliburton Energy Services Inc | |
| CN107238692A (en) * | 2017-05-24 | 2017-10-10 | 中国石油天然气股份有限公司 | Method and device for determining favorable rock types of shale oil |
-
2017
- 2017-10-25 CN CN201711010247.1A patent/CN107558992B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201490A (en) * | 2014-06-05 | 2015-12-30 | 中国石油化工股份有限公司 | Method for analyzing rock facies of shale bed section |
| EP3018287A1 (en) * | 2014-11-07 | 2016-05-11 | Geoservices Equipements SAS | Method and system for monitoring stability of a wellbore |
| CN106032751A (en) * | 2015-03-10 | 2016-10-19 | 中国石油化工股份有限公司 | A well path petrological facies calibration method |
| FR3040509A1 (en) * | 2015-08-31 | 2017-03-03 | Halliburton Energy Services Inc | |
| CN105651966A (en) * | 2016-01-18 | 2016-06-08 | 山东科技大学 | Shale oil and gas high-quality reservoir stratum evaluation method and parameter determination method |
| CN105869060A (en) * | 2016-04-06 | 2016-08-17 | 山东省煤田地质规划勘察研究院 | Fine-grained rock micro microgroove layer classification method |
| CN107238692A (en) * | 2017-05-24 | 2017-10-10 | 中国石油天然气股份有限公司 | Method and device for determining favorable rock types of shale oil |
Non-Patent Citations (2)
| Title |
|---|
| 冉波等: "四川盆地及周缘下古生界五峰组_龙马溪组页岩岩相分类", 《地学前缘（中国地质大学（北京）；北京大学）》 * |
| 蒋裕强等: "中国海相页岩岩相精细划分及测井预测：以四川盆地南部威远地区龙马溪组为例", 《地学前缘（中国地质大学（北京）；北京大学）》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295882A (en) * | 2019-06-24 | 2019-10-01 | 中国石油化工股份有限公司 | Basin edge complicated structure band normal pressure shale gas horizontal well integrated design method |
| CN111335866A (en) * | 2020-02-26 | 2020-06-26 | 中国石油天然气股份有限公司 | Tight sandstone gas reservoir low-quality reservoir horizontal well optimization method |
| CN111379552A (en) * | 2020-03-04 | 2020-07-07 | 中国石油化工股份有限公司 | Sea-phase shale gas horizontal well target window selection method based on high-frequency sequence stratigraphy |
| CN114109374A (en) * | 2020-08-31 | 2022-03-01 | 中国石油天然气股份有限公司 | Method and device for determining position of target window of shale gas reservoir |
| CN114109374B (en) * | 2020-08-31 | 2023-07-25 | 中国石油天然气股份有限公司 | Shale gas reservoir target window position determination method and device |
| CN112989257A (en) * | 2020-12-11 | 2021-06-18 | 中国石油天然气股份有限公司 | Method for measuring gas production rate of marine phase shale oil and gas reservoir |
| CN112989257B (en) * | 2020-12-11 | 2023-09-26 | 中国石油天然气股份有限公司 | Gas production amount measuring method for sea shale oil-gas reservoir |
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