CN106894761A - Using the geosteering method of the geosteering model of time-domain seismic volume - Google Patents
Using the geosteering method of the geosteering model of time-domain seismic volume Download PDFInfo
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Abstract
The present invention relates to a kind of geosteering method of the geosteering model of utilization time-domain seismic volume, the present invention mainly uses two-dimensional time domain stratum and earthquake comparing result, set up two-dimensional time domain geology and seismic-guided model, one is to solve the adjustment of geological model in time domain and matching for high resolution time domain seismic volume, distinguishes reservoir and non-reservoir；Two is the construction depth and stratigraphic dip of compatible Real-time Logging curve and the simulation curve fitting produced according to offset well curve, adjustment two-dimensional time domain geology and seismic-guided model.Instruct real horizontal well drilling trajectory predictions, carry out landing phase and horizontal segment with boring decision-making.
Description
Technical field
The present invention relates to the exploitation of mineral resources art such as oil, natural gas field, and in particular to one kind is using time-domain ground
Shake the geosteering method of the geosteering model of body.
Background technology
During the horizontal well of oilfield prospecting developing is oriented to, drilling engineering is to well rail during being crept into for horizontal well
The deviation of mark control and the uncertainty of geological knowledge, and in well logging resistivity influence factor, well logging Gas Logging Value is slow
To depth etc., it is necessary to the multi-disciplinary achievement in research such as comprehensive earthquake, geology, well logging, well logging, oil reservoir, drilling well, from development plan portion
Affix one's name to sound state and be 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 are maximized.
At present, the research of domestic measurement while drilling instrument and geosteering and with bore data acquisition applications on substantially it is stagnant
After foreign countries, although measurement while drilling instrument and directional well technology have fast lifting, but are still limited by these external large-scale services
The hardware and software monopolization of business.But because service provider of foreign enterprise is limited to this area geological reservoir awareness, and Chinese drilling crew 5
Interpretation software is not processed targetedly, and the contact aspect in passive type application foreign countries software forms far away autonomous with brill
Geosteering system, causes practical application effect less desirable.In high-end technology service and various business expenditures
Risk, as restriction exploration and development with brill Real-time Decision and lifting one technical bottleneck of overall economic efficiency.
The defect that similar geosteering is primarily present：
1st, it is oriented to using Depth Domain seismic volume, increases the depth that well track during being oriented to demarcates layer with Depth Domain seismic volume
Error is uncertain.
2nd, landed using three-dimensional tectonic model before boring or two-dimensional structure isogram, it is real to bore and purpose of design layer height above sea level
There is instrument error in depth.
3rd, the geosteering model of two-dimensional time domain and Depth Domain can not switch the ground of display two-dimensional time domain and Depth Domain
Shake section.
4th, when the orientation and design level well track orientation of drilling trajectory control deviate more than 5 degree, the horizontal position of horizontal segment
Move data difference larger, two-dimentional geology guided modes error influence is with the degree of accuracy for boring decision-making.
5th, 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.
6th, domestic field geology be oriented to transition rely on service provider of oil foreign enterprise with picture and frontier probe instrument is drilled to, service
High cost.
The content of the invention
It is an object of the invention to provide a kind of geosteering method of the geosteering model of utilization time-domain seismic volume,
The present invention mainly uses two-dimensional time domain stratum and earthquake comparing result, sets up two-dimensional time domain geology and seismic-guided mould
Type, one is to solve the adjustment of geological model in time domain and matching for high resolution time domain seismic volume, distinguishes reservoir and non-reservoir；
Two is compatible Real-time Logging curve and the simulation curve fitting produced according to offset well curve, adjusts two-dimensional time domain geology and earthquake
The construction depth and stratigraphic dip of guided modes.Instruct real horizontal well drilling trajectory predictions, carry out landing phase and horizontal segment with brill
Decision-making.
In order to solve the above technical problems, a kind of ground of the geosteering model of utilization time-domain seismic volume disclosed by the invention
Matter guidance method, it is characterised in that it comprises the following steps：
Step 1.1：Deep relation data, offset well lithology number during according to offset well hole deviation data, offset well borehole log data, offset well
According to, the seismic interpretation aspect of offset well fluid data, offset well logging data, offset well time-domain individual-layer data and offset well time-domain, with
And deep relation data when design level well track data and design level well, set up the time-domain stratum of offset well and design level well
And earthquake contrast section；
Step 1.2：Using three-dimensional construction plane data along well track cut into slices generation design level well track it is two-dimentional when
Between domain geology slice sections, using three-dimensional time domain seismic volume along well track cut into slices generation design level well track it is two-dimentional when
Between domain seismic slice section；
Step 1.3：Deep relation data, offset well during by three-dimensional earthquake motion body or pure wave data, offset well hole deviation data, offset well
Deep relation data when the three-dimensional construction plane data of time-domain individual-layer data, offset well, design level well track data, design level well
Two-dimensional time domain earthquake with the two-dimensional time domain geology slice sections and design level well track of design level well track is cut
Piece section overlaps display in the horizontal displacement length of design level well track, forms design level well track two-dimensional time domain ground
Matter and earthquake frame model；
Step 1.4：Deep relation data, offset well time-domain during 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 set up design level well track two dimension
Time-domain geological property model；
Step 1.5：Design level well track data is asked at friendship with horizontal well path two-dimensional time domain geological property model
Reason obtains design level well trace simulation log, by design level well trace simulation log, design level well track
Two-dimensional time domain geology and earthquake frame model and horizontal well path two-dimensional time domain geological property model group are built jointly and erect meter water
The two-dimensional time domain geology and seismic-guided model of horizontal well track；
Step 1.6：According to design level well bore track in fact bore during, under real horizontal well drilling track in real time obtain 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 contrast section, set up real-time time domain stratum of the offset well with real horizontal well drilling and earthquake pair
Compare section；
Step 1.7：According to design level well bore track in fact bore during, under real horizontal well drilling track in real time obtain with
Bore a point log, with boring a point Logging curve, with boring a point drilling engineering curve, with boring point deviational survey data and real horizontal well drilling track
Ask friendship to process with horizontal well path two-dimensional time domain geological property model and obtain real horizontal well drilling trace simulation log；
Step 1.8：By real horizontal well drilling trace simulation log, in real time obtain with bore point a log, with bore point
Logging curve, the two dimension with a drilling engineering curve is bored and with the real horizontal well drilling track of point deviational survey data combination display foundation is bored
Time-domain geology and seismic-guided model；
Step 1.9：The real-time time domain stratum with real horizontal well drilling and earthquake contrast section according to offset well, synchronism switching show
Show the seismic profile of design level well and the two-dimensional time domain geology and seismic-guided model of real horizontal well drilling track, or real brill water
The seismic profile of horizontal well track and the two-dimensional time domain geology and seismic-guided model of real horizontal well drilling track, based on brill point survey
Well calibration curve time-domain seismic inversion, and synchronized update reality horizontal well drilling track two-dimensional time domain geology and earthquake lead
To the construction aspect and stratigraphic dip of model；
Step 1.10：Offset well according to real-time update is cutd open with the real-time time domain stratum of real horizontal well drilling and earthquake contrast
Face, the real horizontal well drilling trace simulation log of contrast is with the acquisition in real time of real horizontal well drilling track with the phase for boring point log
Guan Xing, is carried out what real horizontal well drilling trace simulation log and real horizontal well drilling track were obtained in real time with a brill point log
It is fitted and matches, makes real horizontal well drilling trace simulation log with the acquisition in real time of real horizontal well drilling track with a brill point log
Overlap, the two-dimensional time domain geology and seismic-guided mould of the result real-time update reality horizontal well drilling track matched according to above-mentioned fitting
Type；
Step 1.11：The two-dimensional time domain geology and seismic-guided model of the real horizontal well drilling track according to real-time update,
Judge drill bit with target zone top or the distance of bottom or fluid boundary, and formation thickness and stratigraphic dip；
Step 1.12：The two-dimensional time domain geology and seismic-guided model of the real horizontal well drilling track according to real-time update,
The planned course of the prediction next measuring point of real horizontal well drilling, live TRAJECTORY CONTROL is instructed by the planned course predicted.
Beneficial effects of the present invention：
By technical scheme, because high resolution time domain seismic inversion body can be better anticipated reservoir horizontal stroke
To spread and stratigraphic dip, it is to avoid it is uncertain to be converted to the depth that Depth Domain seismic volume causes, therefore save and possessed 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, it is possible to decrease geological drilling engineering risk, shortens drilling period, realizes single well productivity and investment return
Maximize.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, real-time adjustment two dimension geology and seismic-guided model instructs TRAJECTORY CONTROL, saves the operating time, improve
The degree of accuracy of TRAJECTORY CONTROL and reservoir Drilling ratio, can gradually break service provider of foreign enterprise for ridge that whole horizontal well drilling is serviced
It is disconnected, break away to service provider of oil foreign enterprise with the dependence for being drilled to picture and frontier probe utility services.
Brief 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 is bored；
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 in the present invention and horizontal earthquake section attribute gamma model；
Figure 10 is drilling trajectory two-dimensional time domain geology in the present invention and horizontal earthquake section guided modes.
Wherein, 1-offset well and the time-domain stratum of design level well and earthquake contrast section, 2-design level well track
Two-dimensional time domain geology slice sections, the two-dimensional time domain seismic slice section of 3-design level well track, 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 model,
6-design level well trace simulation log, the two-dimensional time domain geology of 7-design level well track and seismic-guided mould
Type, 8-offset well are surveyed with the real-time time domain stratum of real horizontal well drilling and earthquake contrast section, 9-real horizontal well drilling trace simulation
Well curve, the two-dimensional time domain geology of 10-real horizontal well drilling track and seismic-guided model, the earthquake of 11-design level well
Section, the seismic profile of 12-real horizontal well drilling track.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
The geosteering method of the geosteering model of utilization time-domain seismic volume of the invention, it comprises the following steps：
Step 1.1：Deep relation data, offset well lithology number during according to offset well hole deviation data, offset well borehole log data, offset well
According to, the seismic interpretation aspect of offset well fluid data, offset well logging data, offset well time-domain individual-layer data and offset well time-domain, with
And deep relation data when design level well track data and design level well, set up the time-domain stratum of offset well and design level well
And earthquake contrast section 1；
Step 1.2：Using three-dimensional construction plane data, (the 3-D seismics time explains the three-dimensional of aspect or many well modeling results
Time construction aspect) along the two-dimensional time domain geology slice sections 2 of well track section generation design level well track, use three
Dimension time-domain seismic volume along well track section generation design level well track two-dimensional time domain seismic slice section 3；
Step 1.3：Deep relation data, offset well during by three-dimensional earthquake motion body or pure wave data, offset well hole deviation data, offset well
Deep relation data when the three-dimensional construction plane data of time-domain individual-layer data, offset well, design level well track data, design level well
Two-dimensional time domain earthquake with the two-dimensional time domain geology slice sections 2 and design level well track of design level well track is cut
Horizontal displacement of the piece section 3 in design level well track (refers to the distance of plumb line where point to the well head on well track, also refers to
Measuring point and distance of the well head on horizontal plane) the interior overlapping display of length, form design level well track two-dimensional time domain ground
Matter and earthquake frame model 4；
Step 1.4：Deep relation data, offset well time-domain during 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 set up design level well track two
Dimension time-domain geological property model 5；
Step 1.5：Design level well track data is asked at friendship with horizontal well path two-dimensional time domain geological property model 5
Reason obtains design level well trace simulation log 6, by design level well trace simulation log 6, design level well rail
Mark two-dimensional time domain geology and earthquake frame model 4 and horizontal well path two-dimensional time domain geological property model 5 combine foundation and set
Count the two-dimensional time domain geology and seismic-guided model 7 of horizontal well path；
Step 1.6：According to design level well bore track in fact bore during, under real horizontal well drilling track in real time obtain 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 contrast section 1, set up real-time time domain stratum of the offset well with real horizontal well drilling and earthquake
Contrast section 8；
Step 1.7：According to design level well bore track in fact bore during, under real horizontal well drilling track in real time obtain with
Bore a point log, with boring a point Logging curve, with boring a point drilling engineering curve, with boring point deviational survey data and real horizontal well drilling track
Ask friendship to process with horizontal well path two-dimensional time domain geological property model 5 and obtain real horizontal well drilling trace simulation log 9；
Step 1.8：By real horizontal well drilling trace simulation log 9, in real time obtain with bore point a log, with bore point
Logging curve, the two dimension with a drilling engineering curve is bored and with the real horizontal well drilling track of point deviational survey data combination display foundation is bored
Time-domain geology and seismic-guided model 10；
Step 1.9：The real-time time domain stratum with real horizontal well drilling and earthquake contrast section 8, synchronism switching according to offset well
The seismic profile 11 of design level well and the two-dimensional time domain geology and seismic-guided model 10 of real horizontal well drilling track are shown, or
The seismic profile 12 of real horizontal well drilling track and the two-dimensional time domain geology and seismic-guided model 10 of real horizontal well drilling track, base
In with boring a point log calibration time-domain seismic inversion, and synchronized update reality horizontal well drilling track two-dimensional time domain ground
The construction aspect and stratigraphic dip of matter and seismic-guided model 10；
Step 1.10：Real-time time domain stratum of the offset well with real horizontal well drilling and earthquake contrast section according to real-time update
8, the real horizontal well drilling trace simulation log 9 of contrast is with the acquisition in real time of real horizontal well drilling track with the phase for boring point log
Guan Xing, enters what real horizontal well drilling trace simulation log 9 and real horizontal well drilling track were obtained in real time with a brill point log
Row fitting is matched, and real horizontal well drilling trace simulation log 9 is logged well with brill point with what reality horizontal well drilling track obtained in real time
Curve co-insides, the two-dimensional time domain geology of the result real-time update reality horizontal well drilling track matched according to above-mentioned fitting and earthquake are led
To model 10；
Step 1.11：The two-dimensional time domain geology and seismic-guided model of the real horizontal well drilling track according to real-time update
10, judge drill bit with target zone top or the distance of bottom or fluid boundary, and formation thickness and stratigraphic dip；
Step 1.12：The two-dimensional time domain geology and seismic-guided model of the real horizontal well drilling track according to real-time update
10, the planned course of the prediction next measuring point of real horizontal well drilling instructs live TRAJECTORY CONTROL by the planned course predicted.
In the step of above-mentioned technical proposal 1.11, the two-dimensional time domain geology of the real horizontal well drilling track according to real-time update
And seismic-guided model 10 judges landing phase drill bit with target zone top or the distance of bottom or fluid boundary, and formation thickness
Specific method with stratigraphic dip is：
Very vertical thickness is corrected to (in straight well depending on vertical thickness with brill point log by what real horizontal well drilling track obtained in real time
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
Corrected depending on vertical thickness (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 contrast, obtains current depth mark
Offset well and the real-time time domain stratum of real horizontal well drilling and the stratum of earthquake contrast section 8 and each reference lamina after will layer renewal
Inclination angle (angle between the angle between two-dimensional surface, such as sedimentary and horizontal plane, or tomography and horizontal plane)；
Real-time time domain stratum of the offset well with real horizontal well drilling and earthquake contrast after being updated according to current depth reference lamina
Section 8, determines respectively jointly with reference to 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 in real time, then the instrument error number according to each reference lamina
It is worth drill bit with target zone top or the distance and stratigraphic dip of bottom or fluid boundary.
Planned course in the step of above-mentioned technical proposal 1.12 by predicting instructs landing path in live TRAJECTORY CONTROL
The specific method for controlling is：The two-dimensional time domain geology and seismic-guided model 10 of the real horizontal well drilling track according to 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 is entered target zone；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) is contrasted, it is ensured that drill bit enters mesh
Layer after, the hole angle (Inclination, the angle between measuring point well tangential direction and gravity vertical) where making drill bit is matched
It is 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, the two-dimensional time domain geology and seismic-guided of the real horizontal well drilling track according to real-time update
The determined level of model 10 section drill bit and target zone top or the specific method of the distance and stratigraphic dip of bottom or fluid boundary
For：
The two-dimensional time domain geology and seismic-guided model 10 of the 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
The stratigraphic dip change that time-domain geology and the binding purpose of seismic-guided model 10 layer symmetric flag point are located on seismic profile becomes
Gesture, stratigraphic dip is calculated in the two-dimensional time domain geology and seismic-guided model 10 of real horizontal well drilling track；It is then based on
State the stratigraphic dip variation tendency of stratigraphic dip and seismic profile, comprehensive target zone top circle and bottom circle drilling point, real-time adjustment reality
The two-dimensional time domain geology of horizontal well drilling track and the aspect top circle of seismic-guided model 10 and bottom circle and rotation stratigraphic dip,
Simulated logging curve is matched well logging curve, that is, realize the two-dimensional time domain geology of real-time update reality horizontal well drilling track
And seismic-guided model 10；
The adjustment result of two-dimensional time domain geology and seismic-guided model 10 according to above-mentioned real horizontal well drilling track, is based on
The height above sea level depth or vertical depth and stratigraphic dip of last measuring point prediction bit location, determine actual bit of the drill bit in target zone
Put, make track parallel with stratigraphic dip, the planned course of the prediction next measuring point of real horizontal well drilling instructs live TRAJECTORY CONTROL.
In above-mentioned technical proposal, before boring according to the hole deviation data of offset well, borehole log data, when deep relation data, lithology
The seismic interpretation aspect of data, fluid data, logging data, individual-layer data and time-domain, and design level well track number
According to, set up offset well and contrast section with the Depth Domain stratum of design level well and earthquake, and two-dimensional depth domain geology and earthquake are led
To model；Real horizontal well drilling track obtains with log, Logging curve, drilling engineering curve and the deviational survey number for boring point in real time
According to real-time update Depth Domain stratum and earthquake contrast section, and two-dimensional depth domain geology and earthquake landing and horizontal segment are oriented to
Model, instructs live TRAJECTORY CONTROL.
If being oriented to block without earthquake volume data, support is built using the three-dimensional geological of many well geological researches of this research block
Mould achievement, being oriented to method and directionality measurement guiding method using simulation-contrast-model modification carries out the integration of horizontal well with brill
Geologic modeling and renewal.
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 is collected.
The data that deep relation data is collected for crosshole seismic when described, lithology data is geological logging personnel according to brill
Well returns out landwaste and explains the data for obtaining, and fluid data is that geological logging or rock physicses explain that personnel survey according to gas and well logging is bent
Line explains the data for obtaining.
The logging data is the data that geological logging personnel gather 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 aspect of the time-domain is that to earthquake pure wave data, (geophysics personnel utilize geophysics personnel
Related software is for data result that seismic acquisition data is processed) data result that explains.
Traditional geosteering mainly includes simulation-contrast-model modification method and directionality measurement guiding method.The present invention
Based on novelty on conventional art Research foundation propose seismic inversion tectonic geology body be oriented to method, by horizontal well in fact bore data with
Geological data is combined, and realizes a horizontal well real-time guide system based on seismic data cube, and horizontal well probing is carried out
It is oriented in real time and predicts.These three methods can be in operation according to reservoir logging response character and horizontal well geosteering target
Carry out specific aim application.Its general 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 become with reference to the target zone stratigraphic dip of seismic volume and explanation level analysis landing phase formation contact and horizontal segment
Gesture.Based on stratum longitudinal thickness and contact relation is disclosed to the seismic profile for entering layer point from kickoff point (KOP), rational landing plan is formulated
Slightly.Horizontal segment is crept into according to conventional well logging curve (LWD) after entering layer, and trajectory of horizontal is in target zone inverting section
Position, show reservoir cross directional variations and purpose inclination layer trend with reference to seismic inversion section, instruct Trajectory Design, formulate geology
It is oriented to strategy.
2) simulation-contrast-model modification is oriented to method
Simulated logging curve response based on the stratigraphic model and well track set up in geology and seismic-guided model,
By simulated logging curve with the real comparative simulation for boring log, more new model so that the two matching, the model quilt after renewal
It is considered the sign of underground actual configuration, guiding decision-making is carried out according to this model.
3) directionality measurement guiding method
Whether utilization orientation log data can recognize well track close to reservoir boundaries, it is often more important that can interpolate that
Whether well track changes close to coboundary, lower boundary or horizontal physical property, so as to more accurately carry out decision-making to guiding.
In the present invention, the method for building up of analysis, stratum and earthquake contrast and guided modes is before boring：
The offset well and design level well data of guiding horizontal wellblock block are collected before boring, including：Well Back ground Information, hole deviation number
According to, borehole log data, individual-layer data, rock physicses explanation, time and depth transfer relation, logging data, geological data, seismic interpretation
Aspect, 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, contrasts the well logging of each reference lamina
Curvilinear characteristic.
Time-domain stratum and earthquake real time contrast comprise the following steps：
1) based on the offset well set up before boring and planned well stratum and earthquake contrast section, real horizontal well drilling track obtains in real time
With log, Logging curve, drilling engineering curve and the deviational survey data of boring point, offset well is set up real-time with real horizontal well drilling
Time-domain stratum and earthquake contrast section.
2) it is inclination section well logging curve is vertical very vertical thick from being corrected to depending on thickness of hanging down, carry out reference lamina contrast with offset well.
3) contrasted by the fine index point of stratum and earthquake contrast and two-dimensional time domain geology and seismic-guided model, point
The instrument error of each reference lamina is analysed, instrument error numerical value is determined 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 the letter that hits
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 instrument deflecting dog-leg severity, then update design level well track according to unlike signal layer.By depth
Strata Comparison editor and display function under domain (depth measurement, height above sea level, vertical depth) and time-domain (dual time is poor, substance time difference),
The synchronized update of individual-layer data in two domains is carried out in real time, solves landing phase reality horizontal well drilling with 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, rail is instructed
Mark is controlled.
Two-dimensional time domain geology and earthquake landing guided modes update and comprise the following steps：
1) based on time-domain stratum and earthquake contrast and each reference lamina instrument error numerical value, mobile and rotation two-dimensional time domain
The aspect of geology and seismic-guided model, while be fitted comparative simulation log bores log with real, makes 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 formation thickness and stratigraphic dip at drill bit, real-time update design level well track enters
Firing angle and displacement, in the controlled range that displacement and dog-leg severity are adjusted, determine track Adjusted Option, and it is accurate to reach
Land.
2) well track is made to seek target zone by certain hole angle angle holding drilling after inclination section is drilled, before landing,
After field integrated judgement track confirms to bore meets target zone, increasing hole angle drilling, and during in target zone display optimum position, until real
Horizontal well drilling well track is parallel with stratigraphic dip, keeps angle holding drilling.
3) when judging that described is stratigraphic dip with point correspondence drill bit point is bored, by where drill bit in the well track
The hole angle stratigraphic dip that is adjusted 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, the method also including horizontal segment Strata Comparison：
1) horizontal well curve column can also show except 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, the Reservoir type on stratum residing for real horizontal well drilling track is judged.
2) based on time-domain stratum and earthquake contrast section, target zone symmetric flag point is located at song of being logged well at the position of offset well
Line feature.
3) 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, stratigraphic dip is calculated in two-dimensional time domain geology and seismic-guided model.
4) based on the above-mentioned average stratigraphic dip of each section of calculating symmetric flag point well track and stratigraphic dip variation tendency, knot
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, simulated logging curve is matched well logging curve.
5) according to two-dimensional time domain geology and seismic-guided model adjustment result, based on last measuring point prediction drill bit position
The height above sea level depth and stratigraphic dip put, determine physical location of the drill bit in target zone, make track parallel with stratigraphic dip, prediction
The planned course of the real next measuring point of horizontal well drilling, instructs live TRAJECTORY CONTROL.
By the solution of the present invention, because high resolution time domain seismic inversion body can be better anticipated reservoir transverse direction exhibition
Cloth and stratigraphic dip, it is to avoid it is uncertain to be converted to the depth that Depth Domain seismic volume causes, therefore saved and possess 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, shortens drilling period, realize that single well productivity and investment return are maximized.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Claims (8)
1. a kind of geosteering method of the geosteering model of utilization time-domain seismic volume, it is characterised in that it includes as follows
Step：
Step 1.1：Deep relation data during according to offset well hole deviation data, offset well borehole log data, offset well, offset well lithology data,
The seismic interpretation aspect of offset well fluid data, offset well logging data, offset well time-domain individual-layer data and offset well time-domain, Yi Jishe
Deep relation data during meter horizontal well path data and design level well, sets up the time-domain stratum and ground of offset well and design level well
Shake contrast section (1)；
Step 1.2：Cut into slices along well track using three-dimensional construction plane data and generate the two-dimensional time domain of design level well track
Geology slice sections (2), using three-dimensional time domain seismic volume along well track cut into slices generation design level well track it is two-dimentional when
Between domain seismic slice section (3)；
Step 1.3：Deep relation data, offset well time during by three-dimensional earthquake motion body or pure wave data, offset well hole deviation data, offset well
Deep relation data and set when the three-dimensional construction plane data of domain individual-layer data, offset well, design level well track data, design level well
Count 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：Deep relation data, the layering of offset well time-domain during 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) set up design level well track two dimension
Time-domain geological property model (5)；
Step 1.5：Friendship is asked to process with horizontal well path two-dimensional time domain geological property model (5) design level well track data
Design level well trace simulation log (6) is obtained, by design level well trace simulation log (6), design level well
Track two-dimensional time domain geology and earthquake frame model (4) and horizontal well path two-dimensional time domain geological property model (5) combination
Set up the two-dimensional time domain geology and seismic-guided model (7) of design level well track；
Step 1.6：According to design level well bore track in fact bore during, under real horizontal well drilling track in real time obtain with bore point
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 and design level
The time-domain stratum of well and earthquake contrast section (1), set up real-time time domain stratum of the offset well with real horizontal well drilling and earthquake pair
Than section (8)；
Step 1.7：According to design level well bore track in fact bore during, under real horizontal well drilling track in real time obtain with bore point
Log, with boring a point Logging curve, with boring a point drilling engineering curve, with boring point deviational survey data and real horizontal well drilling track and water
Ask friendship to process and obtain real horizontal well drilling trace simulation log (9) in horizontal well track two-dimensional time domain geological property model (5)；
Step 1.8：By real horizontal well drilling trace simulation log (9), in real time obtain with bore point a log, with bore point record
Well curve, with bore point drilling engineering curve and with bore point deviational survey data combination display set up real horizontal well drilling track it is two-dimentional when
Between domain geology and seismic-guided model (10)；
Step 1.9：Section (8) is contrasted with the real-time time domain stratum of real horizontal well drilling and earthquake according to offset well, synchronism switching shows
Show the seismic profile (11) of design level well and the two-dimensional time domain geology and seismic-guided model (10) of real horizontal well drilling track,
Or the seismic profile (12) and the two-dimensional time domain geology and seismic-guided model of real horizontal well drilling track of real horizontal well drilling track
(10), based on boring a point log calibration time-domain seismic inversion, and synchronized update reality horizontal well drilling track two dimension
The construction aspect and stratigraphic dip of time-domain geology and seismic-guided model (10)；
Step 1.10：Offset well according to real-time update contrasts section (8) with the real-time time domain stratum of real horizontal well drilling and earthquake,
Real horizontal well drilling trace simulation log (9) of contrast is with the acquisition in real time of real horizontal well drilling track with the phase for boring point log
Guan Xing, by real horizontal well drilling trace simulation log (9) with the acquisition in real time of real horizontal well drilling track with brill point log
Matching is fitted, makes real horizontal well drilling trace simulation log (9) with the acquisition in real time of real horizontal well drilling track with brill point
Log overlaps, the two-dimensional time domain geology and ground of the result real-time update reality horizontal well drilling track matched according to above-mentioned fitting
Shake guided modes (10)；
Step 1.11：The two-dimensional time domain geology and seismic-guided model (10) of the real horizontal well drilling track according to real-time update,
Judge drill bit with target zone top or the distance of bottom or fluid boundary, and formation thickness and stratigraphic dip；
Step 1.12：The two-dimensional time domain geology and seismic-guided model (10) of the real horizontal well drilling track according to real-time update,
The planned course of the prediction next measuring point of real horizontal well drilling, live TRAJECTORY CONTROL is instructed by the planned course predicted.
2. the geosteering method of the geosteering model of utilization time-domain seismic volume according to claim 1, its feature
It is：In the step 1.11, the two-dimensional time domain geology and seismic-guided mould of the real horizontal well drilling track according to real-time update
Type (10) judges landing phase drill bit with target zone top or the distance of bottom or fluid boundary, and formation thickness and stratigraphic dip
Specific method be：
Thickness of really hanging down is corrected to depending on vertical thickness with brill point log by what real horizontal well drilling track obtained in real time, while offset well is surveyed
Being corrected to depending on vertical thickness for well curve is very vertical thick, and the thick very vertical thickness with offset well of really being hung down using real horizontal well drilling track carries out reference lamina pair
Than obtaining real-time time domain stratum of the offset well after current depth reference lamina updates with real horizontal well drilling and earthquake contrast section
(8) and each reference lamina stratigraphic dip；
Real-time time domain stratum of the offset well with real horizontal well drilling and earthquake contrast section after being updated according to current depth reference lamina
(8), with reference to real-time update real horizontal well drilling track two-dimensional time domain geology and seismic-guided model (10) determine jointly it is each
The instrument error of reference lamina, determines the instrument error numerical value of each reference lamina in real time, then the instrument error number according to each reference lamina
It is worth drill bit with target zone top or the distance and stratigraphic dip of bottom or fluid boundary.
3. the geosteering method of the geosteering model of utilization time-domain seismic volume according to claim 1, its feature
It is：Planned course in the step 1.12 by predicting instructs the specific method of landing path control in live TRAJECTORY CONTROL
For：Drill bit and purpose in the two-dimensional time domain geology and seismic-guided model (10) of the real horizontal well drilling track according to real-time update
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, in the controlled range that displacement and dog-leg severity are adjusted, determines TRAJECTORY CONTROL Adjusted Option, drill bit is entered purpose
Layer；Target zone contrast according to 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 of utilization time-domain seismic volume according to claim 1, its feature
It is：Two-dimensional time domain geology and seismic-guided model (10) determined level section of the real horizontal well drilling track according to real-time update
The specific method of the distance and stratigraphic dip of drill bit and target zone top or bottom or fluid boundary is：
The two-dimensional time domain geology and seismic-guided model (10) of the 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 real horizontal well drilling track of real-time update it is two-dimentional when
Between the stratigraphic dip change that is located on seismic profile of domain geology and seismic-guided model (10) binding purpose layer symmetric flag point become
Gesture, stratigraphic dip is calculated in the two-dimensional time domain geology and seismic-guided model (10) of real horizontal well drilling track；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, real-time adjustment
The two-dimensional time domain geology of real horizontal well drilling track and the aspect top circle and bottom circle of seismic-guided model (10) and rotation stratum
Inclination angle, makes simulated logging curve match well logging curve, that is, realize the two-dimensional time of real-time update reality horizontal well drilling track
Domain geology and seismic-guided model (10)；
The adjustment result of two-dimensional time domain geology and seismic-guided model (10) according to above-mentioned real horizontal well drilling track, based on most
Latter measuring point predicts the height above sea level depth or vertical depth and stratigraphic dip of bit location, determines actual bit of the drill bit in target zone
Put, make track parallel with stratigraphic dip, the planned course of the prediction next measuring point of real horizontal well drilling instructs live TRAJECTORY CONTROL.
5. the geosteering method of the geosteering model of utilization time-domain seismic volume according to claim 1, its 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 of utilization time-domain seismic volume according to claim 1, its feature
It is：The data that deep relation data is collected for crosshole seismic when described, lithology data is geological logging personnel according to drilling well
Return out landwaste and explain the data for obtaining, fluid data is that geological logging or rock physicses explain that personnel survey and log according to gas
The data that explanation is obtained.
7. the geosteering method of the geosteering model of utilization time-domain seismic volume according to claim 1, its feature
It is：The logging data is the data that geological logging personnel gather 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 of utilization time-domain seismic volume according to claim 1, its feature
It is：The seismic interpretation aspect of the time-domain is the data result that geophysics personnel explain to earthquake pure wave data.
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