CN106894761B - Utilize the geosteering method of the geosteering model of time-domain seismic volume - Google Patents
Utilize the geosteering method of the geosteering model of time-domain seismic volume Download PDFInfo
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- CN106894761B CN106894761B CN201710026225.8A CN201710026225A CN106894761B CN 106894761 B CN106894761 B CN 106894761B CN 201710026225 A CN201710026225 A CN 201710026225A CN 106894761 B CN106894761 B CN 106894761B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
Abstract
The present invention relates to a kind of geosteering methods of the geosteering model using time-domain seismic volume, the present invention mainly utilizes two-dimensional time domain stratum and earthquake comparing result, establish two-dimensional time domain geology and seismic-guided model, first, solving the matching of the adjustment and high resolution time domain seismic volume of geological model in time domain, reservoir and non-reservoir are distinguished；Second is that compatible Real-time Logging curve is fitted with the simulation curve generated according to offset well curve, the construction depth and stratigraphic dip of two-dimensional time domain geology and seismic-guided model are adjusted.The real horizontal well drilling trajectory predictions of guidance, carry out landing phase and horizontal segment with boring decision.
Description
Technical field
The present invention relates to the exploitations of mineral resources domain technology fields such as oil, natural gas, and in particular to a kind of using time-domain
Shake the geosteering method of the geosteering model of body.
Background technology
During the horizontal well of oilfield prospecting developing is oriented to, for Horizontal Well Drilling into drilling engineering in the process to well rail
The influence factor of resistivity, well logging Gas Logging Value are slow in the deviation of mark control and the uncertainty of geological knowledge and well logging
Depth etc. is arrived, the multi-disciplinary achievements in research such as comprehensive earthquake, geology, well logging, well logging, oil reservoir, drilling well are needed, from development plan portion
It affixes one's name to sound state and is oriented to strategy and horizontal productivity evaluation, on the opportunity of analysis track adjustment, dynamic optimization well track is in reservoir
Optimum position, reduce geological drilling engineering risk, shorten drilling period, realize that single well productivity and investment return maximize.
Currently, the research of domestic measurement while drilling tool and geosteering and with apparent stagnant in the acquisition applications for the data of boring
Although there is fast lifting in foreign countries, measurement while drilling tool and directional well technology afterwards, but is still limited by these external large-scale services
The hardware and software of quotient monopolizes.But because service provider of foreign enterprise is limited to this area geological reservoir awareness, and Chinese drilling crew 5
Interpretation software is not handled targetedly, and the contact level in the external software of passive type application is formed far away autonomous with brill
Geosteering system causes practical application effect less desirable.In high-end technology service and various business expenditures
Risk becomes and restricts exploration and development with brill Real-time Decision and promote one technical bottleneck of overall economic efficiency.
The defect that similar geosteering is primarily present：
1, it is oriented to using Depth Domain seismic volume, increases the depth of well track and Depth Domain seismic volume calibration layer during being oriented to
Error is uncertain.
2, it is landed using three-dimensional tectonic model or two-dimensional structure isogram before brill, it is real to bore and purpose of design layer height above sea level
There are instrument errors for depth.
3, the geosteering model of two-dimensional time domain and Depth Domain cannot switch the ground in display two-dimensional time domain and Depth Domain
Shake section.
4, when the orientation and design level well track orientation of drilling trajectory control deviate 5 degree or more, the horizontal position of horizontal segment
It is larger to move data difference, two-dimentional geology guided modes error influence is with the accuracy for boring decision.
5, geosteering engineer in part instructs TRAJECTORY CONTROL by the adjustment of three-dimensional geological model, and the operating time is long, existing
Field operation is slow.
6, domestic field geology be oriented to transition rely on service provider of oil foreign enterprise with picture and frontier probe tool is drilled to, service
It is of high cost.
Invention content
The purpose of the present invention is to provide a kind of geosteering method of the geosteering model using time-domain seismic volume,
The present invention mainly utilizes two-dimensional time domain stratum and earthquake comparing result, establishes two-dimensional time domain geology and seismic-guided mould
Type distinguishes reservoir and non-reservoir first, solving the matching of the adjustment and high resolution time domain seismic volume of geological model in time domain；
Second is that compatible Real-time Logging curve is fitted with the simulation curve generated according to offset well curve, two-dimensional time domain geology and earthquake are adjusted
The construction depth and stratigraphic dip of guided modes.The real horizontal well drilling trajectory predictions of guidance, carry out landing phase and horizontal segment with brill
Decision.
In order to solve the above technical problems, a kind of ground of geosteering model using time-domain seismic volume disclosed by the invention
Matter guidance method, which is characterized in that it includes the following steps：
Step 1.1：According to depth relation data, offset well lithology number when offset well hole deviation data, offset well borehole log data, offset well
According to, the seismic interpretation level of offset well fluid data, offset well logging data, offset well time-domain individual-layer data and offset well time-domain, with
And depth relation data when design level well track data and design level well, establish the time-domain stratum of offset well and design level well
And earthquake compares section；
Step 1.2：When being sliced the two dimension for generating design level well track along well track using three-dimensional construction plane data
Between domain geology slice sections, when being sliced the two dimension for generating design level well track along well track using three-dimensional time domain seismic volume
Between domain seismic slice section；
Step 1.3：By depth relation data, offset well when three-dimensional earthquake motion body or pure wave data, offset well hole deviation data, offset well
Depth relation data when time-domain individual-layer data, offset well three-dimensional construction plane data, design level well track data, design level well
It is cut with the two-dimensional time domain geology slice sections of design level well track and the two-dimensional time domain earthquake of design level well track
Piece section overlaps display in the horizontal displacement length of design level well track, with forming design level well track two-dimensional time domain
Matter and earthquake frame model；
Step 1.4：Depth relation data, offset well time-domain when based on offset well hole deviation data, offset well borehole log data, offset well
Individual-layer data and design level well track two-dimensional time domain geology and earthquake frame model establish design level well track two dimension
Time-domain geological property model；
Step 1.5：To design level well track data and design design level well track two-dimensional time domain geological property mould
Type asks friendship to handle to obtain design level well trace simulation log, by design level well trace simulation log, design water
Horizontal well track two-dimensional time domain geology and earthquake frame model and design level well track two-dimensional time domain geological property model group
Build the two-dimensional time domain geology and seismic-guided model for erecting meter horizontal well path jointly；
Step 1.6：During being bored in fact according to design level well bore track, obtained in real time under real horizontal well drilling track with
Bore point a log, with bore point a Logging curve, with bore point drilling engineering curve and with bore point a deviational survey data, based on offset well with design
The time-domain stratum of horizontal well and earthquake compare section, establish real-time time domain stratum and the earthquake pair of offset well and real horizontal well drilling
Compare section；
Step 1.7：During being bored in fact according to design level well bore track, obtained in real time under real horizontal well drilling track with
Bore a point log, with bore a point Logging curve, with bore a point drilling engineering curve, with boring point deviational survey data and real horizontal well drilling track
Friendship is asked to handle to obtain real horizontal well drilling trace simulation log with design level well track two-dimensional time domain geological property model；
Step 1.8：By real horizontal well drilling trace simulation log, obtain in real time with bore point a log, with bore point
Logging curve, the two dimension with a drilling engineering curve is bored and with point deviational survey data combination display foundation real horizontal well drilling track is bored
Time-domain geology and seismic-guided model；
Step 1.9：Section is compared according to offset well and the real-time time domain stratum of real horizontal well drilling and earthquake, synchronism switching is aobvious
Show the two-dimensional time domain geology and seismic-guided model of the seismic profile and real horizontal well drilling track of design level well, or real brill water
The two-dimensional time domain geology and seismic-guided model of the seismic profile of horizontal well track and real horizontal well drilling track, based on brill point survey
Well calibration curve time-domain seismic inversion, and the two-dimensional time domain geology of synchronized update reality horizontal well drilling track and earthquake are led
To the construction level and stratigraphic dip of model；
Step 1.10：It is cutd open according to the offset well of real-time update and the real-time time domain stratum of real horizontal well drilling and earthquake comparison
Face compares the phase with brill point log that real horizontal well drilling trace simulation log obtains in real time with real horizontal well drilling track
Guan Xing carries out real horizontal well drilling trace simulation log with what real horizontal well drilling track obtained in real time with brill point log
Fitting matching, make that real horizontal well drilling trace simulation log and real horizontal well drilling track obtain in real time with boring a point log
It overlaps, according to the two-dimensional time domain geology and seismic-guided mould of the matched result real-time update reality horizontal well drilling track of above-mentioned fitting
Type；
Step 1.11：According to the two-dimensional time domain geology and seismic-guided model of the real horizontal well drilling track of real-time update,
Judge at the top of drill bit and target zone or at a distance from bottom or fluid boundary and formation thickness and stratigraphic dip；
Step 1.12：According to the two-dimensional time domain geology and seismic-guided model of the real horizontal well drilling track of real-time update,
The planned course of the next measuring point of the real horizontal well drilling of prediction passes through the live TRAJECTORY CONTROL of planned course guidance of prediction.
Beneficial effects of the present invention：
Technical solution through the invention, since reservoir cross can be better anticipated in high resolution time domain seismic inversion body
To spread and stratigraphic dip, avoid depth caused by being converted to Depth Domain seismic volume uncertain, therefore saved and had high score
The geological model field operation time that resolution seismic volume is oriented to, gamma and electricity of the technical program using conventional LWD tool
Resistance rate curve adjusts two-dimensional time domain and Depth Domain geosteering model, the opportunity of analysis track adjustment, dynamic optimization well track
Optimum position in reservoir can reduce geological drilling engineering risk, shorten drilling period, realize single well productivity and investment return
It maximizes.The well logging curve that the technical program is measured by conventional tool, according to high-resolution time-domain and Depth Domain
Two-dimension earthquake section, the two-dimentional geology of adjustment and seismic-guided model, instruct TRAJECTORY CONTROL in real time, save the operating time, improve
The accuracy of TRAJECTORY CONTROL and reservoir Drilling ratio can gradually break ridge of the service provider of foreign enterprise for entire horizontal well drilling service
It is disconnected, it breaks away to service provider of oil foreign enterprise with the dependence for being drilled to picture and frontier probe utility services.
Description of the drawings
Fig. 1 is technical solution of the present invention data flowchart；
Fig. 2 is technical solution of the present invention operational flowchart；
Fig. 3 is offset well and design level well two-dimensional time domain stratum and earthquake correlation profile before present example bores；
Fig. 4 is planned course two-dimensional time domain geological property gamma model before being bored in the present invention；
Fig. 5 is planned course two-dimensional time domain geology and seismic-guided model before being bored in the present invention；
Fig. 6 is real drilling time domain stratum and earthquake landing correlation profile in the present invention；
Fig. 7 is drilling trajectory two-dimensional time domain landing geological property gamma model in the present invention；
Fig. 8 is drilling trajectory two-dimensional time domain geology and earthquake landing guided modes in the present invention；
Fig. 9 is drilling trajectory two-dimensional time domain geology and horizontal earthquake section attribute gamma model in the present invention；
Figure 10 is drilling trajectory two-dimensional time domain geology and horizontal earthquake section guided modes in the present invention.
Wherein, 1-offset well and the time-domain stratum of design level well and earthquake comparison section, 2-design level well tracks
Two-dimensional time domain geology slice sections, 3-design level well tracks two-dimensional time domain seismic slice section, 4-design water
Horizontal well track two-dimensional time domain geology and earthquake frame model, 5-design level well track two-dimensional time domain geological property models,
6-design level well trace simulation logs, 7-design level well tracks two-dimensional time domain geology and seismic-guided mould
Type, 8-offset wells and the real-time time domain stratum of real horizontal well drilling and earthquake comparison section, 9-real horizontal well drilling trace simulations are surveyed
The earthquake of well curve, the two-dimensional time domain geology of 10-real horizontal well drilling tracks and seismic-guided model, 11-design level wells
Section, 12-real horizontal well drilling tracks seismic profile.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
The geosteering method of the geosteering model using time-domain seismic volume of the present invention, it includes the following steps：
Step 1.1：According to depth relation data, offset well lithology number when offset well hole deviation data, offset well borehole log data, offset well
According to, the seismic interpretation level of offset well fluid data, offset well logging data, offset well time-domain individual-layer data and offset well time-domain, with
And depth relation data when design level well track data and design level well, establish the time-domain stratum of offset well and design level well
And earthquake compares section 1；
Step 1.2：Using three-dimensional construction plane data, (the 3-D seismics time explains the three-dimensional of level or more well modeling results
Time construction level) the two-dimensional time domain geology slice sections 2 for generating design level well track are sliced along well track, use three
It ties up time-domain seismic volume and is sliced the two-dimensional time domain seismic slice section 3 for generating design level well track along well track；
Step 1.3：By depth relation data, offset well when three-dimensional earthquake motion body or pure wave data, offset well hole deviation data, offset well
Depth relation data when time-domain individual-layer data, offset well three-dimensional construction plane data, design level well track data, design level well
It is cut with the two-dimensional time domain geology slice sections 2 of design level well track and the two-dimensional time domain earthquake of design level well track
(distance of plumb line, also refers to where referring to point to the well head on well track for horizontal displacement of the piece section 3 in design level well track
Measuring point is at a distance from well head is on horizontal plane) the interior overlapping display of length, with forming design level well track two-dimensional time domain
Matter and earthquake frame model 4；
Step 1.4：Depth relation data, offset well time-domain when based on offset well hole deviation data, offset well borehole log data, offset well
Individual-layer data and design level well track two-dimensional time domain geology and earthquake frame model 4 establish design level well track two
Tie up time-domain geological property model 5；
Step 1.5：Design level well track data and design level well track two-dimensional time domain geological property model 5 are asked
Friendship handles to obtain design level well trace simulation log 6, by design level well trace simulation log 6, design level
Well track two-dimensional time domain geology and earthquake frame model 4 and 5 groups of design level well track two-dimensional time domain geological property model
Build the two-dimensional time domain geology and seismic-guided model 7 for erecting meter horizontal well path jointly；
Step 1.6：During being bored in fact according to design level well bore track, obtained in real time under real horizontal well drilling track with
Bore point a log, with bore point a Logging curve, with bore point drilling engineering curve and with bore point a deviational survey data, based on offset well with design
The time-domain stratum of horizontal well and earthquake compare section 1, establish real-time time domain stratum and the earthquake of offset well and real horizontal well drilling
Compare section 8；
Step 1.7：During being bored in fact according to design level well bore track, obtained in real time under real horizontal well drilling track with
Bore a point log, with bore a point Logging curve, with bore a point drilling engineering curve, with boring point deviational survey data and real horizontal well drilling track
Friendship is asked to handle to obtain real horizontal well drilling trace simulation log with design level well track two-dimensional time domain geological property model 5
9；
Step 1.8：By real horizontal well drilling trace simulation log 9, obtain in real time with bore point a log, with bore point
Logging curve, the two dimension with a drilling engineering curve is bored and with point deviational survey data combination display foundation real horizontal well drilling track is bored
Time-domain geology and seismic-guided model 10；
Step 1.9：Section 8, synchronism switching are compared according to offset well and the real-time time domain stratum of real horizontal well drilling and earthquake
Show the two-dimensional time domain geology and seismic-guided model 10 of the seismic profile 11 and real horizontal well drilling track of design level well, or
The two-dimensional time domain geology and seismic-guided model 10 of the seismic profile 12 of real horizontal well drilling track and real horizontal well drilling track, base
In with boring a point log calibration time-domain seismic inversion, and the two-dimensional time domain of synchronized update reality horizontal well drilling track
The construction level and stratigraphic dip of matter and seismic-guided model 10；
Step 1.10：Section is compared according to the offset well of real-time update and the real-time time domain stratum of real horizontal well drilling and earthquake
8, compare the phase with brill point log that real horizontal well drilling trace simulation log 9 obtains in real time with real horizontal well drilling track
Guan Xing, by real horizontal well drilling trace simulation log 9 and real horizontal well drilling track obtain in real time with bore point log into
Fitting of going matches, and real horizontal well drilling trace simulation log 9 is made to log well with brill point with what real horizontal well drilling track obtained in real time
Curve co-insides are led according to the two-dimensional time domain geology of the matched result real-time update reality horizontal well drilling track of above-mentioned fitting and earthquake
To model 10；
Step 1.11：According to the two-dimensional time domain geology and seismic-guided model of the real horizontal well drilling track of real-time update
10, judge at the top of drill bit and target zone or at a distance from bottom or fluid boundary and formation thickness and stratigraphic dip；
Step 1.12：According to the two-dimensional time domain geology and seismic-guided model of the real horizontal well drilling track of real-time update
10, it predicts the planned course of the next measuring point of real horizontal well drilling, passes through the live TRAJECTORY CONTROL of planned course guidance of prediction.
In the step 1.11 of above-mentioned technical proposal, according to the two-dimensional time domain geology of the real horizontal well drilling track of real-time update
And seismic-guided model 10 judges at the top of landing phase drill bit and target zone or at a distance from bottom or fluid boundary and formation thickness
Specific method with stratigraphic dip is：
Real horizontal well drilling track is obtained in real time very vertical thick (in straight well with being corrected to depending on thickness of hanging down for point log is bored
On, refer to stratiform or like the distance perpendicular to horizontal plane between stratified geological objects upper and lower interface), while by offset well log
It is corrected depending on vertical thick (in various well type, referring to stratiform or like the distance perpendicular to horizontal plane between stratified geological objects upper and lower interface)
It is very vertical thickness, the thick thickness of really hanging down with offset well of really being hung down using real horizontal well drilling track carries out reference lamina comparison, obtains current depth mark
The updated offset well of will layer and the real-time time domain stratum of real horizontal well drilling and the stratum of earthquake comparison section 8 and each reference lamina
Inclination angle (angle between two-dimensional surface, such as the angle between sedimentary and horizontal plane or tomography and horizontal plane)；
It is compared according to the updated offset well of current depth reference lamina and the real-time time domain stratum of real horizontal well drilling and earthquake
Section 8 determines respectively jointly in conjunction with the two-dimensional time domain geology and seismic-guided model 10 of the real horizontal well drilling track of real-time update
The instrument error of reference lamina determines the instrument error numerical value of each reference lamina, then according to the instrument error number of each reference lamina in real time
It is worth drill bit at the top of target zone or at a distance from bottom or fluid boundary and stratigraphic dip.
Landing path in live TRAJECTORY CONTROL is instructed by the planned course of prediction in the step 1.12 of above-mentioned technical proposal
The specific method of control is：According to the two-dimensional time domain geology and seismic-guided model 10 of the real horizontal well drilling track of real-time update
Middle drill bit and target zone top or the formation thickness and stratigraphic dip of bottom or fluid boundary, real-time update design level well track
Incidence angle and displacement, in displacement and dog-leg severity (the i.e. rate of over-all angle change of point-to-point transmission, unit：/ 30 meters of degree) adjustment
Controlled range in, determine TRAJECTORY CONTROL Adjusted Option, drill bit made to enter target zone；It is surveyed with brill according to real horizontal well drilling and offset well
The target zone of well curve and gas logging curve (gas logging curve is the curve obtained by logging equipment) compares, it is ensured that drill bit enters mesh
Layer after, the hole angle (Inclination, the angle between measuring point wellbore tangential direction and gravity vertical) where making drill bit matches
For the stratigraphic dip at drill bit in the two-dimensional time domain geology and seismic-guided model 10 of the real horizontal well drilling track of real-time update.
In above-mentioned technical proposal, according to the two-dimensional time domain geology and seismic-guided of the real horizontal well drilling track of real-time update
At the top of 10 determined level section drill bit of model and target zone or at a distance from bottom or fluid boundary and the specific method of stratigraphic dip
For：
The two-dimensional time domain geology and seismic-guided model 10 of real horizontal well drilling track based on real-time update, identifying purpose
Layer symmetric flag point is located at features of logging curve at the position of offset well；Then by the two dimension of the real horizontal well drilling track of real-time update
Time-domain geology and 10 binding purpose layer symmetric flag point of seismic-guided model are located at the variation of the stratigraphic dip on seismic profile and become
Gesture calculates stratigraphic dip in the two-dimensional time domain geology of real horizontal well drilling track and seismic-guided model 10；It is then based on
The stratigraphic dip variation tendency of stratigraphic dip and seismic profile, comprehensive target zone top circle and bottom circle drilling point are stated, adjustment is real in real time
The two-dimensional time domain geology of horizontal well drilling track and the level top circle of seismic-guided model 10 and bottom circle and rotation stratigraphic dip,
So that simulated logging curve is matched well logging curve, that is, realizes the two-dimensional time domain geology of real-time update reality horizontal well drilling track
And seismic-guided model 10；
According to the adjustment of the two-dimensional time domain geology of above-mentioned real horizontal well drilling track and seismic-guided model 10 as a result, being based on
The height above sea level depth or vertical depth and stratigraphic dip of the last one measuring point prediction bit location, determine reality of the drill bit in target zone
Position keeps track parallel with stratigraphic dip, predicts the planned course of the next measuring point of real horizontal well drilling, instructs live track control
System.
In above-mentioned technical proposal, before boring according to the hole deviation data of offset well, borehole log data, when depth relation data, lithology
Data, fluid data, logging data, individual-layer data and the seismic interpretation level of time-domain and the track number of design level well
According to the Depth Domain stratum and earthquake comparison section and two-dimensional depth domain geology and earthquake for establishing offset well and design level well are led
To model；Real horizontal well drilling track is obtained in real time with log, Logging curve, drilling engineering curve and the deviational survey number for boring point
According to real-time update Depth Domain stratum and earthquake compare section and two-dimensional depth domain geology and earthquake landing and horizontal segment guiding
Model instructs live TRAJECTORY CONTROL.
If being oriented to block without earthquake volume data, support is built using the three-dimensional geological of more well geological researches of this research block
Mould achievement is oriented to method using simulation-comparison-model modification and directionality measures guiding method and carries out the integration of horizontal well with brill
Geologic modeling and update.
In above-mentioned technical proposal, the hole deviation data and borehole log data of the offset well are by measurement while drilling or cable
The data that well logging collects.
Depth relation data is the data that crosshole seismic collects when described, and lithology data is geological logging personnel according to brill
Well returns out the data that landwaste is explained, fluid data is that geological logging or rock physics explain that personnel survey according to gas and well logging is bent
The data that line is explained.
The logging data is the data that geological logging personnel acquire according to logging equipment from situ of drilling well, and individual-layer data is
The reference lamina depth data that geological research personnel analyze according to stratum comparing result.
The seismic interpretation level of the time-domain is that earthquake pure wave data, (geophysics personnel utilize geophysics personnel
The data result that related software handles seismic acquisition data) data result that explains.
Traditional geosteering includes mainly that simulation-comparison-model modification method and directionality measure guiding method.The present invention
Based on novelty on traditional technology Research foundation propose seismic inversion tectonic geology body be oriented to method, by horizontal well in fact bore data with
Seismic data is combined, and realizes a horizontal well real-time guide system based on seismic data cube, is drilled and is carried out to horizontal well
It is oriented to and predicts in real time.These three methods can be in operation according to the logging response character of reservoir and horizontal well geosteering target
Carry out specific aim application.Its basic principle is as follows：
1) seismic inversion tectonic geology body is oriented to method
If seismic inversion body (or pure wave data) can distinguish reservoir and non-reservoir, the seismic interpretation layer of target zone is extracted
Face, then in conjunction with seismic volume and explaining that the target zone stratigraphic dip of level analysis landing phase formation contact and horizontal segment becomes
Gesture.Based on stratum longitudinal thickness and contact relation is disclosed from kickoff point (KOP) to the seismic profile for entering layer point, rational landing plan is formulated
Slightly.Horizontal segment and trajectory of horizontal are crept into target zone inverting section according to conventional well logging curve (LWD) after entering layer
Position, show reservoir cross directional variations and purpose inclination layer trend in conjunction with seismic inversion section, instruct Trajectory Design, formulate geology
It is oriented to strategy.
2) simulation-comparison-model modification is oriented to method
The simulated logging curve response of stratigraphic model and well track based on foundation in geology and seismic-guided model,
By simulated logging curve and the real comparative simulation for boring log, more new model is so that the two matching, updated model quilt
It is considered the characterization of underground actual configuration, guiding decision is carried out according to this model.
3) directionality measures guiding method
Whether utilization orientation log data can identify well track close to reservoir boundaries, it is often more important that can judge
Whether well track to more acurrate to be oriented to carries out decision close to coboundary, lower boundary or lateral physical property variation.
In the present invention, analysis, stratum and the method for building up of earthquake comparison and guided modes are before boring：
The offset well and design level well data of guiding horizontal wellblock block are collected before boring, including：Well basic information, hole deviation number
According to, borehole log data, individual-layer data, rock physics explanation, time and depth transfer relationship, logging data, seismic data, seismic interpretation
Level, seismic interpretation tomography, seismic interpretation data volume, seismic inversion body, individual well drilling geology scheme etc..
Time-domain stratum and earthquake real time contrast's process are in the present invention：
After starting with brill, real time data is loaded into real horizontal well drilling Strata Comparison, compares the well logging of each reference lamina
Curvilinear characteristic.
Time-domain stratum and earthquake real time contrast include the following steps：
1) section is compared based on the offset well established before brill and planned well stratum and earthquake, real horizontal well drilling track obtains in real time
With bore point log, Logging curve, drilling engineering curve and deviational survey data, establish offset well with reality horizontal well drilling it is real-time
Time-domain stratum and earthquake compare section.
2) inclination section well logging curve is vertical very vertical thick from being corrected to depending on vertical thickness, carry out reference lamina comparison with offset well.
3) it is compared by the fine index point of stratum and earthquake comparison and two-dimensional time domain geology and seismic-guided model, point
The instrument error of each reference lamina is analysed, determines instrument error numerical value in real time.
Two-dimensional time domain geology and earthquake landing guided modes renewal process are in the present invention：
From deflecting point analysis well spacing when the classification foundation of design level well, the spatial geometric shape of target zone and middle target letter
Breath.Using current real horizontal well drilling log and offset well Strata Comparison, determine target zone vertical depth (or height above sea level), stratigraphic dip,
Incidence angle, displacement and tool deflecting dog-leg severity, then according to unlike signal layer update design level well track.Pass through depth
Strata Comparison editor under domain (depth measurement, height above sea level, vertical depth) and time-domain (dual time poor, substance time difference) and display function,
The synchronized update for carrying out individual-layer data in two domains in real time solves landing phase reality horizontal well drilling and offset well Strata Comparison target zone sea
The prediction of (or vertical depth) is pulled out, two-dimensional time domain and Depth Domain geosteering model is adjusted, on the opportunity of analysis track adjustment, instructs rail
Mark controls.
Two-dimensional time domain geology and the update of earthquake landing guided modes include the following steps：
1) time-domain stratum and earthquake comparison and each reference lamina instrument error numerical value, mobile and rotation two-dimensional time domain are based on
The level of geology and seismic-guided model, while being fitted comparative simulation log and boring log with real, make real horizontal well drilling
The simulated logging curve matching of reference lamina point is real to bore log.The two-dimensional time domain geology of synchronized update display adjustment and earthquake
The stratigraphic dip of guided modes, according to the formation thickness and stratigraphic dip at drill bit, real-time update design level well track enters
Firing angle and displacement determine track Adjusted Option in the controlled range that displacement and dog-leg severity adjust, and reach accurate
Land.
2) after inclination section is drilled, well track is made to seek target zone by certain hole angle angle holding drilling before landing,
When field integrated judgement track confirm bore meet target zone after, increasing hole angle drilling, and when showing optimum position in target zone, until real
Horizontal well drilling well track is parallel with stratigraphic dip, keeps angle holding drilling.
3) it is stratigraphic dip when judging described with the corresponding drill bit point of point is bored, it will be where drill bit in the well track
Hole angle be adjusted to the stratigraphic dip in the two-dimensional time domain geosteering model at drill bit.
Two-dimensional time domain geology and horizontal earthquake section are to when guided modes real-time update process in the present invention：
When judge drill bit apart from target zone apart from when, this method further includes the Strata Comparison of horizontal segment：
1) horizontal well curve column can also be shown in addition to loaded and displayed well logging curve, Logging curve, drilling engineering curve
The real-time interpretation data of lithology and fluid, comprehensive well logging curve, Logging curve, drilling engineering curve, lithology and fluid solution
Data are released, judge the Reservoir type on stratum residing for real horizontal well drilling track.
2) it is based on time-domain stratum and earthquake compares section, target zone symmetric flag point is located at the position of offset well song of logging well
Line feature.
3) it is based on two-dimensional time domain geology and seismic-guided model, target zone symmetric flag point is located at the ground on seismic profile
Inclination layer trend calculates stratigraphic dip in two-dimensional time domain geology and seismic-guided model.
4) the average stratigraphic dip of each section of above-mentioned calculating symmetric flag point well track and stratigraphic dip variation tendency, knot are based on
Target zone top circle and bottom circle drilling point are closed, two-dimensional time domain geology and seismic-guided purpose of model Mian Ding Jie Hedi circle layer by layer are adjusted
And rotation stratigraphic dip, so that simulated logging curve is matched well logging curve.
5) according to two-dimensional time domain geology and the adjustment of seismic-guided model as a result, based on the last one measuring point prediction drill bit position
The height above sea level depth and stratigraphic dip set determine physical location of the drill bit in target zone, keep track parallel with stratigraphic dip, prediction
The planned course of the real next measuring point of horizontal well drilling instructs live TRAJECTORY CONTROL.
Scheme through the invention, since reservoir transverse direction exhibition can be better anticipated in high resolution time domain seismic inversion body
Cloth and stratigraphic dip avoid depth caused by being converted to Depth Domain seismic volume uncertain, therefore have saved and had high-resolution
Drilling ratio is improved in the geological model field operation time that seismic volume is oriented to, optimum position of the dynamic optimization well track in reservoir,
Geological drilling engineering risk is reduced, drilling period is shortened, realizes that single well productivity and investment return maximize.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. a kind of geosteering method of geosteering model using time-domain seismic volume, which is characterized in that it includes as follows
Step：
Step 1.1：According to depth relation data when offset well hole deviation data, offset well borehole log data, offset well, offset well lithology data,
The seismic interpretation level of offset well fluid data, offset well logging data, offset well time-domain individual-layer data and offset well time-domain, Yi Jishe
Depth relation data when counting horizontal well path data and design level well, establishes the time-domain stratum and ground of offset well and design level well
Shake comparison section (1)；
Step 1.2：The two-dimensional time domain for generating design level well track is sliced along well track using three-dimensional construction plane data
Geology slice sections (2), when being sliced the two dimension for generating design level well track along well track using three-dimensional time domain seismic volume
Between domain seismic slice section (3)；
Step 1.3：By depth relation data, offset well time when three-dimensional earthquake motion body or pure wave data, offset well hole deviation data, offset well
It depth relation data and is set when domain individual-layer data, offset well three-dimensional construction plane data, design level well track data, design level well
Count the two-dimensional time domain geology slice sections (2) of horizontal well path and the two-dimensional time domain seismic slice of design level well track
Section (3) overlaps display in the horizontal displacement length of design level well track, forms design level well track two-dimensional time domain
Geology and earthquake frame model (4)；
Step 1.4：Depth relation data, the layering of offset well time-domain when based on offset well hole deviation data, offset well borehole log data, offset well
Data and design level well track two-dimensional time domain geology and earthquake frame model (4) establish design level well track two dimension
Time-domain geological property model (5)；
Step 1.5：Friendship is asked to design level well track data and design level well track two-dimensional time domain geological property model (5)
Processing obtains design level well trace simulation log (6), by design level well trace simulation log (6), design water
Horizontal well track two-dimensional time domain geology and earthquake frame model (4) and design level well track two-dimensional time domain geological property model
(5) the two-dimensional time domain geology and seismic-guided model (7) of design level well track are established in combination；
Step 1.6：During being bored in fact according to design level well bore track, obtained in real time under real horizontal well drilling track with boring point
Log, with bore point a Logging curve, with bore point drilling engineering curve and with bore point a deviational survey data, be based on offset well and design level
The time-domain stratum of well and earthquake comparison section (1) establish real-time time domain stratum and the earthquake pair of offset well and real horizontal well drilling
Than section (8)；
Step 1.7：During being bored in fact according to design level well bore track, obtained in real time under real horizontal well drilling track with boring point
Log, with bore a point Logging curve, with bore a point drilling engineering curve, with boring point deviational survey data and real horizontal well drilling track and set
Meter horizontal well path two-dimensional time domain geological property model (5) asks friendship to handle to obtain real horizontal well drilling trace simulation log
(9)；
Step 1.8：By real horizontal well drilling trace simulation log (9), obtain in real time with bore point a log, with bore point record
Well curve, with boring point drilling engineering curve and when with boring point deviational survey data combination display and establish the two dimension of real horizontal well drilling track
Between domain geology and seismic-guided model (10)；
Step 1.9：According to offset well, the real-time time domain stratum with real horizontal well drilling and earthquake comparison section (8), synchronism switching are aobvious
Show the two-dimensional time domain geology and seismic-guided model (10) of the seismic profile (11) and real horizontal well drilling track of design level well,
Or the two-dimensional time domain geology and seismic-guided model of the seismic profile (12) and real horizontal well drilling track of real horizontal well drilling track
(10), it is based on a brill point log calibration time-domain seismic inversion, and the two dimension of synchronized update reality horizontal well drilling track
The construction level and stratigraphic dip of time-domain geology and seismic-guided model (10)；
Step 1.10：The real-time time domain stratum with real horizontal well drilling and earthquake comparison section (8) according to the offset well of real-time update,
The phase with brill point log that the real horizontal well drilling trace simulation log (9) of comparison obtains in real time with real horizontal well drilling track
Real horizontal well drilling trace simulation log (9) is put a log by Guan Xing with what real horizontal well drilling track obtained in real time with brill
Be fitted matching, make that real horizontal well drilling trace simulation log (9) and real horizontal well drilling track obtain in real time with boring point
Log overlaps, according to the two-dimensional time domain geology and ground of the matched result real-time update reality horizontal well drilling track of above-mentioned fitting
Shake guided modes (10)；
Step 1.11：According to the two-dimensional time domain geology and seismic-guided model (10) of the real horizontal well drilling track of real-time update,
Judge at the top of drill bit and target zone or at a distance from bottom or fluid boundary and formation thickness and stratigraphic dip；
Step 1.12：According to the two-dimensional time domain geology and seismic-guided model (10) of the real horizontal well drilling track of real-time update,
The planned course of the next measuring point of the real horizontal well drilling of prediction passes through the live TRAJECTORY CONTROL of planned course guidance of prediction.
2. the geosteering method of the geosteering model according to claim 1 using time-domain seismic volume, feature
It is：In the step 1.11, according to the two-dimensional time domain geology and seismic-guided mould of the real horizontal well drilling track of real-time update
Type (10) judges at the top of landing phase drill bit and target zone or at a distance from bottom or fluid boundary and formation thickness and stratigraphic dip
Specific method be：
It is corrected to thickness of really hanging down depending on thickness of hanging down with brill point log by what real horizontal well drilling track obtained in real time, while offset well being surveyed
Well curve is corrected to thickness of really hanging down depending on thickness of hanging down, and utilizes the very vertical thick thick progress reference lamina pair that really hangs down with offset well in real horizontal well drilling track
Than obtaining real-time time domain stratum and the earthquake comparison section of the updated offset well of current depth reference lamina and real horizontal well drilling
(8) and the stratigraphic dip of each reference lamina；
Section is compared according to the updated offset well of current depth reference lamina and the real-time time domain stratum of real horizontal well drilling and earthquake
(8), it is determined jointly in conjunction with the two-dimensional time domain geology and seismic-guided model (10) of the real horizontal well drilling track of real-time update each
The instrument error of reference lamina determines the instrument error numerical value of each reference lamina, then according to the instrument error number of each reference lamina in real time
It is worth drill bit at the top of target zone or at a distance from bottom or fluid boundary and stratigraphic dip.
3. the geosteering method of the geosteering model according to claim 1 using time-domain seismic volume, feature
It is：The specific method that landing path controls in live TRAJECTORY CONTROL is instructed by the planned course of prediction in the step 1.12
For：According to drill bit and purpose in the two-dimensional time domain geology of the real horizontal well drilling track of real-time update and seismic-guided model (10)
Layer top or the formation thickness and stratigraphic dip of bottom or fluid boundary, the incidence angle and target of real-time update design level well track
Preceding displacement determines TRAJECTORY CONTROL Adjusted Option, drill bit is made to enter purpose in the controlled range that displacement and dog-leg severity adjust
Layer；It is compared according to the target zone of real horizontal well drilling and offset well well logging curve and gas logging curve, it is ensured that drill bit enters target zone
Afterwards, the hole angle matching where making drill bit is the two-dimensional time domain geology and seismic-guided of the real horizontal well drilling track of real-time update
Stratigraphic dip in model (10) at drill bit.
4. the geosteering method of the geosteering model according to claim 1 using time-domain seismic volume, feature
It is：According to the two-dimensional time domain geology of the real horizontal well drilling track of real-time update and seismic-guided model (10) determined level section
Drill bit is at the top of target zone or at a distance from bottom or fluid boundary and the specific method of stratigraphic dip is：
The two-dimensional time domain geology and seismic-guided model (10) of real horizontal well drilling track based on real-time update, identifying purpose layer
Symmetric flag point is located at features of logging curve at the position of offset well；When then by the two dimension of the real horizontal well drilling track of real-time update
Between domain geology and seismic-guided model (10) binding purpose layer symmetric flag point be located at the variation of the stratigraphic dip on seismic profile and become
Gesture calculates stratigraphic dip in the two-dimensional time domain geology of real horizontal well drilling track and seismic-guided model (10)；It is then based on
The stratigraphic dip variation tendency of above-mentioned stratigraphic dip and seismic profile, comprehensive target zone top circle and bottom circle drilling point, adjust in real time
The two-dimensional time domain geology of real horizontal well drilling track and the level top circle of seismic-guided model (10) and bottom circle and rotation stratum
Inclination angle makes simulated logging curve match well logging curve, that is, realizes the two-dimensional time of real-time update reality horizontal well drilling track
Domain geology and seismic-guided model (10)；
According to the adjustment of the two-dimensional time domain geology of above-mentioned real horizontal well drilling track and seismic-guided model (10) as a result, based on most
The height above sea level depth or vertical depth and stratigraphic dip of the latter measuring point prediction bit location, determine actual bit of the drill bit in target zone
It sets, keeps track parallel with stratigraphic dip, predict the planned course of the next measuring point of real horizontal well drilling, instruct live TRAJECTORY CONTROL.
5. the geosteering method of the geosteering model according to claim 1 using time-domain seismic volume, feature
It is：The hole deviation data and borehole log data of the offset well are the number collected by measurement while drilling or wireline logging
According to.
6. the geosteering method of the geosteering model according to claim 1 using time-domain seismic volume, feature
It is：Depth relation data is the data that crosshole seismic collects when described, and lithology data is geological logging personnel according to drilling well
The data that landwaste is explained are returned out, fluid data is that geological logging or rock physics explain personnel according to gas survey and log
Explain obtained data.
7. the geosteering method of the geosteering model according to claim 1 using time-domain seismic volume, feature
It is：The logging data is the data that geological logging personnel acquire according to logging equipment from situ of drilling well, and individual-layer data is ground
The reference lamina depth data that matter researcher analyzes according to stratum comparing result.
8. the geosteering method of the geosteering model according to claim 1 using time-domain seismic volume, feature
It is：The seismic interpretation level of the time-domain is the data result that geophysics personnel explain earthquake pure wave data.
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Denomination of invention: Geological guidance method using geological guidance model of seismic body in time domain Effective date of registration: 20220315 Granted publication date: 20181102 Pledgee: Wuhan area branch of Hubei pilot free trade zone of Bank of China Ltd. Pledgor: WUHAN TIMES GEOSMART TECHNOLOGY Co.,Ltd. Registration number: Y2022420000061 |