CN103774989B - Treat that drilling well Trajectory Design horizontal well geosteering analyzes method with boring dynamic modeling - Google Patents
Treat that drilling well Trajectory Design horizontal well geosteering analyzes method with boring dynamic modeling Download PDFInfo
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- CN103774989B CN103774989B CN201310659275.1A CN201310659275A CN103774989B CN 103774989 B CN103774989 B CN 103774989B CN 201310659275 A CN201310659275 A CN 201310659275A CN 103774989 B CN103774989 B CN 103774989B
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Abstract
During the theme of this application relates to oil drilling horizontal well drilling, with boring the method that dynamic modeling dynamically adjusts track geosteering.Solution is to be picked up and Multilateral Wells target layer data by mutual multi-well correlation (destination layer individual-layer data), destination layer achievement structural map, earthquake destination layer by computer software, by plane difference value-based algorithm, set up the initial three-dimensional geological model of destination layer.Along positive horizontal well drilling trajectory extraction D geology model, according to wellbore trace and the spatial relationship of model, adjust drill bit direction, and in drilling course, according to bore meet special key point (reference lamina, landing point, the end, goes out, the end is entered, eject, special layers in jacking and destination layer) electrical measurement or gas survey feature, according to uniform thickness principle, the top dolly obtaining destination layer at each key point is deep, thus adjust three-dimensional geological model, again along positive horizontal well drilling trajectory extraction D geology model, the stratigraphic dip provided according to model, then revise the hole angle of drill bit.And so forth, it is ensured that within drill bit drilling direction remains at controlled range.Not only increase the rate that hits and the Drilling ratio of drilling well, and shorten drilling period, improve drilling efficiency.
Description
Technical field
The present invention relates to a kind of in horizontal well drilling process by dynamically setting up geological model, the method manually or automatically designing track to be drilled, for the rate that hits of well of improving the standard and in effective target zone Drilling ratio.Particularly relate to a kind of application with boring geological information and region static state geologic information, it is judged that drill bit and the relation of target zone, and then revise the good method of drill bit drilling direction in advance.
Background technology
Along with the development of petroleum drilling technology, owing to oil reservoir is thin, can the reason such as production properties difference, cannot be carried out the oil-gas reservoir of business development in the past, it now is possible to exploit by the way of horizontal well drilling.The most in recent years coal bed gas, shale gas exploitation more and more higher to the requirement of drilling technology, horizontal well drilling technology, as emerging drilling technology, improves yield, improves production efficiency, the oil-gas reservoir that cannot exploit of making over obtains effective exploitation, is more and more used in oil gas drilling.How drill bit, during horizontal well drilling, is guided by oil-gas exploration production division, how to ensure that drill bit creeps in effective target zone always, is the key improving drilling efficiency.At present, the method of geosteering also rests on, the multiple papery data of on-the-spot employing, by means such as positive drilling well and offset well Linear Comparison, vertical contrasts and by observing well log curve and the change of gas logging curve, the change on stratum is judged according to artificial experience, thus tentative adjustment wellbore trace.
At present, industry has some tool software, mainly to performance data or phasic results data (mainly static data), carry out achievement map drawing, be used for helping user, carry out geological analysis, geosteering directly perceived is played certain help.
The problem that technology exists now:
But, because horizontal well drilling technology is the drilling technology the most just risen.At present, so-called geosteering, it is usually referred to utilize well logging during equipment (LWD), stratum is carried out the guiding after simple analysis, accuracy is the highest, the often situation of appearance target leakage target by mistake, it is ensured that the effectively Drilling ratio of interlayer, several the curves only leaning on well logging during to provide together are the problems that can't resolve high Drilling ratio.Conventional geological research means, often to the understanding that stratum is static, in drilling course, the understanding to destination layer is constantly to change.Current technology can not meet with the needs boring geological knowledge.And the most do not form a kind of normalized geosteering analytical model.
Summary of the invention
In order to improve the rate that hits and the Drilling ratio of drilling well, improve the efficiency of drilling well, the present invention proposes the modeling of a set of dynamic geological and dynamically adjusts geosteering thinking and the analysis method of track to be drilled, and realize with software, scene and rear geological research personnel can be made, drilling process has foundation, relatively accurately analyze destination layer.And then adjust wellbore trace offer guidance for engineering in real time.
It is considered that improve the rate that hits of destination layer and Drilling ratio improve drilling efficiency it is crucial that to the understanding of destination layer and the optimization of wellbore trace, and the dynamic understanding to destination layer, three key parameters will be held: the destination layer degree of depth, top bottom boundaries and spatial shape.And these 3 parameters are to form the basis of geological model directly perceived, model is continually changing in drilling course, the most constantly adjusts Trajectory Design, the only in this way high efficiency of guarantee drilling well.Specific implementation is as follows:
1, by providing multi-well correlation module, offset well destination layer position is explained, sets up the top bed die type that destination layer is initial；Or set up initial geological model by achievement structural map.
2, the initial position of destination layer, top bottom boundaries and spatial shape are obtained along planned course.
3, by curve comparison electrical to reference lamina, it is adjusted according to the degree of depth at the bottom of the uniform thickness principle top to destination layer corresponding point, or be adjusted by the degree of depth at the bottom of some the special key points (as landed, ejecting, jacking, the end goes out, the end is entered) top to corresponding model, can also be by the degree of depth at the bottom of the top of model and Seismic Data Match adjustment model.
4, the stratigraphic dip provided according to the model after adjusting, in conjunction with present bit location hole angle, it was predicted that track to be drilled.
The invention has the beneficial effects as follows:
1, make the work of whole geosteering have guidance foundation, accomplished to shoot the arrow at the target.
2, owing to dynamically adjusting geological model, make geomatics engineer that the understanding of destination layer to be become closer to objective, improve Drilling ratio in the rate of hitting and layer.
3, dynamic Trajectory Design to be drilled provides Automated Design and manual designs, makes with being drilled with meter the most simple and practical.
4, due to contrast, Dynamic Model adjustment, dynamic Trajectory Design optimization to be drilled, whole system all by completing, makes drilling period be greatly shortened, improves drilling efficiency, saved drilling cost.
Accompanying drawing explanation
Accompanying drawing 1 is to treat that drilling well Trajectory Design horizontal well geosteering analyzes method structural representation with brill dynamic modeling.
Accompanying drawing 2 is to treat that drilling well Trajectory Design horizontal well geosteering is analyzed method and realized schematic flow sheet with brill dynamic modeling.
52 mouthfuls of well well location tables of data in accompanying drawing 3 application example
Well location scattergram in accompanying drawing 4 example
From the destination layer control point scattergram that 52 mouthfuls of well individual-layer datas and hole deviation data obtain in accompanying drawing 5 example
Accompanying drawing 6 example generates destination layer end face structural map and structure ground plan according to well location thus forms destination layer three-dimensional geological body Model
The destination layer D geology model that accompanying drawing 7 cuts out along positive Drilling Design track (or drilling trajectory)
Accompanying drawing 8, according to offset well reference lamina and destination layer formation thickness, picks up positive wellbore target layer control point
Target spot is modified by accompanying drawing 9 according to the destination layer geological model of amendment
Accompanying drawing 10 carries out Trajectory Design to be drilled automatically according to correction target spot and current drill bit position
Hit after accompanying drawing 11 adjustment figure
Model and model that accompanying drawing adjusts after being eventually led to for more than 12 time adjust and control point diagram
Detailed description of the invention
In order to make the technical problem to be solved, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention will be described in detail.It should be noted that, specific embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
The first step, offset well is utilized to set up initial target layer geological model
Offset well data (accompanying drawing 3)
Offset well drawing position (accompanying drawing 4)
Position, offset well destination layer control point (accompanying drawing 5)
Utilize structural map (accompanying drawing 6) at the bottom of the top of the target zone model that plane difference value-based algorithm generates
Model section (accompanying drawing 7) is cut out along track
Second step, by curve comparison electrical to reference lamina, it is adjusted according to the degree of depth at the bottom of the uniform thickness principle top to destination layer corresponding point, or be adjusted by the degree of depth at the bottom of some the special key points (as landed, ejecting, jacking, the end goes out, the end is entered) top to corresponding model, can also be by the degree of depth at the bottom of the top of model and Seismic Data Match adjustment model.(accompanying drawing 8)
3rd step, correction target spot (accompanying drawing 9)
4th step, adjust track to be drilled (accompanying drawing 10, accompanying drawing 11)
5th step, circulation above procedure complete whole geosteering work (accompanying drawing 12)
The foregoing is only presently preferred embodiments of the present invention, be not limited to the present invention, any amendment, equivalent and the improvement etc. made within all principles in the present invention and spirit, within being all included in protection scope of the present invention.
Claims (4)
1. treat that drilling well Trajectory Design horizontal well geosteering is analyzed method and included with brill dynamic modeling: the method improving hit rate and Drilling ratio in drilling course, it is characterised in that concrete steps include:
A is identified through mutual multi-well correlation, destination layer achievement structural map, the pickup of earthquake destination layer and Multilateral Wells target layer data, by plane difference value-based algorithm, sets up the initial three-dimensional geological model of destination layer；
B confirms along well trajectory extraction two dimensional model；
C confirms with in drill ga(u)ge journey, utilizes to bore and meets the electrical measurement of key point or gas surveys feature, and according to uniform thickness principle, the top dolly obtaining destination layer at each key point is deep；
D is identified through plane difference value-based algorithm, revises three-dimensional geological model；
E is again along well trajectory extraction two dimensional model；
F, by measuring stratigraphic dip now, adjusts wellbore trace.
The most according to claim 1 with bore dynamic modeling treat drilling well Trajectory Design horizontal well geosteering analyze method, it is characterised in that: in described step A, mutual multi-well correlation includes destination layer individual-layer data.
The most according to claim 1 with bore dynamic modeling treat drilling well Trajectory Design horizontal well geosteering analyze method, it is characterised in that: in described step B two dimensional model include the degree of depth, top the end, spatial shape.
The most according to claim 1 treat that drilling well Trajectory Design horizontal well geosteering analyzes method with boring dynamic modeling, it is characterised in that: described step C is bored and meets that key point includes reference lamina, landing point, the end goes out, the end is entered, eject, special layers in jacking and destination layer.
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| CN103774989A CN103774989A (en) | 2014-05-07 |
| CN103774989B true CN103774989B (en) | 2016-08-17 |
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Families Citing this family (15)
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| US10422924B2 (en) | 2013-11-08 | 2019-09-24 | Schlumberger Technology Corporation | Stratigraphic and structural interpretation of deviated and horizontal wellbores |
| CN105275393B (en) * | 2014-06-30 | 2017-07-07 | 中国石油天然气股份有限公司 | Method and device for horizontal well drilling of oil layer and drill string |
| CN105735977A (en) * | 2014-12-12 | 2016-07-06 | 中石化胜利石油工程有限公司钻井工艺研究院 | While-drilling well logging curve real-time comparison method |
| CN104975808B (en) * | 2015-01-15 | 2017-08-01 | 中石化西南石油工程有限公司地质录井分公司 | A kind of deep water horizontal well wellbore trace method of adjustment |
| CN105464592B (en) * | 2015-03-31 | 2018-01-12 | 中国石油化工股份有限公司江汉油田分公司勘探开发研究院 | A kind of shale gas horizontal well geosteering method |
| CN106354893A (en) * | 2015-07-14 | 2017-01-25 | 中国石油化工股份有限公司 | Method for geologic modeling with horizontal well data during drilling |
| CN105317375B (en) * | 2015-10-15 | 2017-10-17 | 中国石油天然气集团公司 | Horizontal well is inducted into Target process and device |
| CN108008469B (en) * | 2016-10-28 | 2020-06-09 | 中石化石油工程技术服务有限公司 | Well-seismic combined horizontal well geosteering modeling method |
| CN106869790B (en) * | 2017-02-24 | 2018-12-11 | 中石化重庆涪陵页岩气勘探开发有限公司 | A kind of quick fine geology guidance method of shale gas horizontal well |
| CN107829684B (en) * | 2017-06-30 | 2019-09-10 | 中国石油化工股份有限公司 | 3D geological model -3D horizontal well path real-time linkage boring method |
| CN111722276A (en) * | 2019-03-22 | 2020-09-29 | 中国石油天然气集团有限公司 | Seismic guiding method and system for rock drilling |
| CN110107282B (en) * | 2019-05-30 | 2022-05-20 | 中国石油天然气股份有限公司 | Method for controlling while-drilling track of thin-layer shale oil horizontal well |
| CN114861260A (en) * | 2022-04-07 | 2022-08-05 | 中国石油天然气集团有限公司 | Method and device for adjusting microstructure of while-drilling guiding region, equipment and storage medium |
| CN116378648B (en) * | 2023-04-23 | 2024-07-02 | 中国科学院地质与地球物理研究所 | Near-bit stratum detection method and device based on while-drilling acoustic wave forward looking |
| CN118148602A (en) * | 2024-03-21 | 2024-06-07 | 中国地质调查局油气资源调查中心 | Method for improving drilling rate of coal seam for high-dip-angle coal seam horizontal well |
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